./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12ff1c3352fe657a44d5503b0c0550124efd9c84e66a259e2d68c9ba31095791 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:12:09,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:12:09,138 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:12:09,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:12:09,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:12:09,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:12:09,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:12:09,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:12:09,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:12:09,218 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:12:09,218 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:12:09,219 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:12:09,219 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:12:09,222 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:12:09,223 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:12:09,223 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:12:09,224 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:12:09,224 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:12:09,225 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:12:09,225 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:12:09,226 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:12:09,231 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:12:09,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:12:09,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:12:09,232 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:12:09,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:12:09,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:12:09,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:12:09,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:12:09,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:12:09,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:12:09,235 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:12:09,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:12:09,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:12:09,236 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:12:09,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:12:09,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:12:09,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:12:09,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:12:09,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:12:09,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:12:09,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:12:09,240 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:12:09,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:12:09,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:12:09,241 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:12:09,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:12:09,242 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12ff1c3352fe657a44d5503b0c0550124efd9c84e66a259e2d68c9ba31095791 [2024-11-09 07:12:09,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:12:09,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:12:09,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:12:09,596 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:12:09,597 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:12:09,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c Unable to find full path for "g++" [2024-11-09 07:12:11,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:12:12,253 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:12:12,272 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c [2024-11-09 07:12:12,294 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/data/d462d2333/1c98101d6e474ba1a5238d0b7f9e0d60/FLAG004042f30 [2024-11-09 07:12:12,319 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/data/d462d2333/1c98101d6e474ba1a5238d0b7f9e0d60 [2024-11-09 07:12:12,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:12:12,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:12:12,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:12:12,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:12:12,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:12:12,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:12:12" (1/1) ... [2024-11-09 07:12:12,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223af761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:12, skipping insertion in model container [2024-11-09 07:12:12,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:12:12" (1/1) ... [2024-11-09 07:12:12,396 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:12:12,861 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_0efe753a-b391-4cef-8c9d-74c7b3e325cb/sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c[18376,18389] [2024-11-09 07:12:12,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:12:12,905 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:12:12,920 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [49] [2024-11-09 07:12:12,922 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [118] [2024-11-09 07:12:12,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [372] [2024-11-09 07:12:12,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [476] [2024-11-09 07:12:12,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [842] [2024-11-09 07:12:12,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [892] [2024-11-09 07:12:12,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [930] [2024-11-09 07:12:12,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [939] [2024-11-09 07:12:13,046 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_0efe753a-b391-4cef-8c9d-74c7b3e325cb/sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c[18376,18389] [2024-11-09 07:12:13,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:12:13,081 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:12:13,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13 WrapperNode [2024-11-09 07:12:13,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:12:13,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:12:13,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:12:13,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:12:13,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,166 INFO L138 Inliner]: procedures = 59, calls = 107, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 240 [2024-11-09 07:12:13,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:12:13,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:12:13,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:12:13,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:12:13,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:12:13,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:12:13,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:12:13,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:12:13,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (1/1) ... [2024-11-09 07:12:13,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:12:13,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:13,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:12:13,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:12:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:12:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 07:12:13,313 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 07:12:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 07:12:13,314 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 07:12:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 07:12:13,314 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 07:12:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 07:12:13,314 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 07:12:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 07:12:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 07:12:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 07:12:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 07:12:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-09 07:12:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-09 07:12:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-09 07:12:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-09 07:12:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-09 07:12:13,317 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-09 07:12:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:12:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 07:12:13,317 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 07:12:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:12:13,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:12:13,425 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:12:13,428 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:12:13,841 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2024-11-09 07:12:13,842 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:12:14,007 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:12:14,007 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 07:12:14,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:12:14 BoogieIcfgContainer [2024-11-09 07:12:14,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:12:14,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:12:14,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:12:14,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:12:14,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:12:12" (1/3) ... [2024-11-09 07:12:14,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747dbf2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:12:14, skipping insertion in model container [2024-11-09 07:12:14,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:12:13" (2/3) ... [2024-11-09 07:12:14,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747dbf2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:12:14, skipping insertion in model container [2024-11-09 07:12:14,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:12:14" (3/3) ... [2024-11-09 07:12:14,020 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2024-11-09 07:12:14,071 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:12:14,072 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:12:14,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:12:14,162 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;@2e9c7322, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:12:14,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:12:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-09 07:12:14,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 07:12:14,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:14,180 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:14,180 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:14,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 462207574, now seen corresponding path program 1 times [2024-11-09 07:12:14,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:14,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125019066] [2024-11-09 07:12:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:14,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:12:14,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:14,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125019066] [2024-11-09 07:12:14,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125019066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:14,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:14,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:12:14,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838886595] [2024-11-09 07:12:14,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:14,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 07:12:14,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 07:12:14,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:12:14,530 INFO L87 Difference]: Start difference. First operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:12:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:14,640 INFO L93 Difference]: Finished difference Result 148 states and 199 transitions. [2024-11-09 07:12:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 07:12:14,646 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-09 07:12:14,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:14,662 INFO L225 Difference]: With dead ends: 148 [2024-11-09 07:12:14,662 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 07:12:14,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:12:14,671 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:14,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:12:14,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 07:12:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-09 07:12:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 51 states have internal predecessors, (55), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 07:12:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2024-11-09 07:12:14,730 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 21 [2024-11-09 07:12:14,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:14,731 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2024-11-09 07:12:14,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:12:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2024-11-09 07:12:14,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 07:12:14,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:14,735 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] [2024-11-09 07:12:14,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:12:14,736 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:14,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:14,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1141394441, now seen corresponding path program 1 times [2024-11-09 07:12:14,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:14,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757177300] [2024-11-09 07:12:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:14,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:12:14,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:14,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757177300] [2024-11-09 07:12:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757177300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:14,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:14,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:12:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369887363] [2024-11-09 07:12:14,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:14,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:14,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:14,904 INFO L87 Difference]: Start difference. First operand 70 states and 90 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) [2024-11-09 07:12:14,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:14,982 INFO L93 Difference]: Finished difference Result 117 states and 151 transitions. [2024-11-09 07:12:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:14,983 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 [2024-11-09 07:12:14,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:14,985 INFO L225 Difference]: With dead ends: 117 [2024-11-09 07:12:14,985 INFO L226 Difference]: Without dead ends: 62 [2024-11-09 07:12:14,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:14,988 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:14,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 119 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:12:14,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-09 07:12:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-09 07:12:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 46 states have internal predecessors, (49), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 07:12:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2024-11-09 07:12:15,002 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 22 [2024-11-09 07:12:15,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:15,003 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2024-11-09 07:12:15,003 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) [2024-11-09 07:12:15,004 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2024-11-09 07:12:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 07:12:15,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:15,006 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:15,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:12:15,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:15,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:15,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1926490144, now seen corresponding path program 1 times [2024-11-09 07:12:15,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:15,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806672135] [2024-11-09 07:12:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:15,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:12:15,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:15,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806672135] [2024-11-09 07:12:15,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806672135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:15,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:15,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:12:15,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199730035] [2024-11-09 07:12:15,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:15,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:15,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:15,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:15,195 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:12:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:15,267 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2024-11-09 07:12:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:15,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-09 07:12:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:15,270 INFO L225 Difference]: With dead ends: 122 [2024-11-09 07:12:15,270 INFO L226 Difference]: Without dead ends: 62 [2024-11-09 07:12:15,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:15,273 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:15,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 62 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:12:15,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-09 07:12:15,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-09 07:12:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 46 states have internal predecessors, (48), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 07:12:15,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2024-11-09 07:12:15,288 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 24 [2024-11-09 07:12:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:15,290 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2024-11-09 07:12:15,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:12:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2024-11-09 07:12:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 07:12:15,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:15,293 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:15,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:12:15,294 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:15,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1080391580, now seen corresponding path program 1 times [2024-11-09 07:12:15,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:15,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312267551] [2024-11-09 07:12:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:15,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:12:15,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:15,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312267551] [2024-11-09 07:12:15,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312267551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:15,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:15,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:12:15,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156296987] [2024-11-09 07:12:15,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:15,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:15,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:15,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:15,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:15,419 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 07:12:15,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:15,552 INFO L93 Difference]: Finished difference Result 165 states and 212 transitions. [2024-11-09 07:12:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:15,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-11-09 07:12:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:15,556 INFO L225 Difference]: With dead ends: 165 [2024-11-09 07:12:15,556 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 07:12:15,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:15,559 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 48 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:15,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 119 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:12:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 07:12:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2024-11-09 07:12:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 73 states have internal predecessors, (81), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (26), 18 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-09 07:12:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2024-11-09 07:12:15,625 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 34 [2024-11-09 07:12:15,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:15,626 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2024-11-09 07:12:15,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 07:12:15,629 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2024-11-09 07:12:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 07:12:15,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:15,630 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:15,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:12:15,631 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:15,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1913310562, now seen corresponding path program 1 times [2024-11-09 07:12:15,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:15,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783145441] [2024-11-09 07:12:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:12:15,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:15,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783145441] [2024-11-09 07:12:15,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783145441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:15,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:15,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:12:15,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536772630] [2024-11-09 07:12:15,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:15,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:12:15,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:15,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:12:15,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:12:15,937 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:12:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:16,507 INFO L93 Difference]: Finished difference Result 228 states and 283 transitions. [2024-11-09 07:12:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:12:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-11-09 07:12:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:16,511 INFO L225 Difference]: With dead ends: 228 [2024-11-09 07:12:16,515 INFO L226 Difference]: Without dead ends: 127 [2024-11-09 07:12:16,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-09 07:12:16,518 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 76 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:16,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 243 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:12:16,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-09 07:12:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-09 07:12:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 80 states have (on average 1.225) internal successors, (98), 88 states have internal predecessors, (98), 22 states have call successors, (22), 17 states have call predecessors, (22), 22 states have return successors, (33), 24 states have call predecessors, (33), 22 states have call successors, (33) [2024-11-09 07:12:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2024-11-09 07:12:16,568 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 40 [2024-11-09 07:12:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:16,569 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2024-11-09 07:12:16,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:12:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2024-11-09 07:12:16,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 07:12:16,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:16,575 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:16,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:12:16,576 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:16,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2145096312, now seen corresponding path program 1 times [2024-11-09 07:12:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:16,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224770627] [2024-11-09 07:12:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:16,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:12:16,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:16,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224770627] [2024-11-09 07:12:16,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224770627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:16,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:16,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:12:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017285996] [2024-11-09 07:12:16,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:16,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:12:16,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:12:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:12:16,937 INFO L87 Difference]: Start difference. First operand 125 states and 153 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:12:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:17,212 INFO L93 Difference]: Finished difference Result 322 states and 394 transitions. [2024-11-09 07:12:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:12:17,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 41 [2024-11-09 07:12:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:17,219 INFO L225 Difference]: With dead ends: 322 [2024-11-09 07:12:17,219 INFO L226 Difference]: Without dead ends: 199 [2024-11-09 07:12:17,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:12:17,221 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 92 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:17,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 245 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:12:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-09 07:12:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2024-11-09 07:12:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 123 states have (on average 1.1951219512195121) internal successors, (147), 136 states have internal predecessors, (147), 37 states have call successors, (37), 31 states have call predecessors, (37), 34 states have return successors, (52), 36 states have call predecessors, (52), 37 states have call successors, (52) [2024-11-09 07:12:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 236 transitions. [2024-11-09 07:12:17,301 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 236 transitions. Word has length 41 [2024-11-09 07:12:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:17,301 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 236 transitions. [2024-11-09 07:12:17,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:12:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 236 transitions. [2024-11-09 07:12:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 07:12:17,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:17,308 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:17,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:12:17,308 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:17,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:17,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1243205280, now seen corresponding path program 1 times [2024-11-09 07:12:17,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:17,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057620910] [2024-11-09 07:12:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:17,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:12:17,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:17,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057620910] [2024-11-09 07:12:17,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057620910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:17,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:17,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 07:12:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567847080] [2024-11-09 07:12:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:17,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:12:17,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:17,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:12:17,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:12:17,704 INFO L87 Difference]: Start difference. First operand 195 states and 236 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:12:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:18,467 INFO L93 Difference]: Finished difference Result 449 states and 556 transitions. [2024-11-09 07:12:18,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:12:18,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 44 [2024-11-09 07:12:18,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:18,475 INFO L225 Difference]: With dead ends: 449 [2024-11-09 07:12:18,475 INFO L226 Difference]: Without dead ends: 309 [2024-11-09 07:12:18,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:12:18,479 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 173 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:18,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 256 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:12:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-09 07:12:18,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 285. [2024-11-09 07:12:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 184 states have (on average 1.201086956521739) internal successors, (221), 202 states have internal predecessors, (221), 52 states have call successors, (52), 39 states have call predecessors, (52), 48 states have return successors, (75), 55 states have call predecessors, (75), 52 states have call successors, (75) [2024-11-09 07:12:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 348 transitions. [2024-11-09 07:12:18,571 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 348 transitions. Word has length 44 [2024-11-09 07:12:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:18,572 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 348 transitions. [2024-11-09 07:12:18,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:12:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 348 transitions. [2024-11-09 07:12:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 07:12:18,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:18,577 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:18,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 07:12:18,578 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:18,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:18,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1058381755, now seen corresponding path program 1 times [2024-11-09 07:12:18,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:18,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517299859] [2024-11-09 07:12:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:18,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 07:12:18,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:18,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517299859] [2024-11-09 07:12:18,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517299859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:12:18,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832103606] [2024-11-09 07:12:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:18,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:18,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:18,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:18,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:12:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:19,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 07:12:19,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:12:19,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:12:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:12:19,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832103606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:12:19,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [248085061] [2024-11-09 07:12:19,737 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2024-11-09 07:12:19,737 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:12:19,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:12:19,749 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:12:19,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:12:24,986 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 137 for LOIs [2024-11-09 07:12:25,122 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2024-11-09 07:12:25,787 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 62 for LOIs [2024-11-09 07:12:25,851 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 34 for LOIs [2024-11-09 07:12:25,946 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 34 for LOIs [2024-11-09 07:12:26,054 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 35 for LOIs [2024-11-09 07:12:26,062 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:12:33,491 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4372#(and (= ~methaneLevelCritical~0 0) (not (= 2 ~waterLevel~0)) (<= 2 ~waterLevel~0) (= |old(~pumpRunning~0)| 0) (<= ~waterLevel~0 2147483647) (= |old(~waterLevel~0)| ~waterLevel~0) (exists ((|v_ULTIMATE.start_test_~tmp___1~0#1_35| Int) (|v_ULTIMATE.start_test_#t~nondet7#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_19| Int) (|v_ULTIMATE.start_test_~tmp___2~0#1_16| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_test_#t~nondet7#1_18| Int)) (and (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_16|)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_16| 2147483647) (or (and (= |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_test_~tmp___1~0#1_35|) (= |v_ULTIMATE.start_test_#t~nondet7#1_BEFORE_CALL_7| |v_ULTIMATE.start_test_#t~nondet7#1_18|) (not (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_16|))) (and (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~0#1_19| 2147483648)) (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_16|) (<= |v_ULTIMATE.start_test_~tmp___1~0#1_19| 2147483647))))) (= ~switchedOnBeforeTS~0 0) (not (= 0 ~systemActive~0)) (= ~pumpRunning~0 1) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2024-11-09 07:12:33,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:12:33,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:12:33,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 15 [2024-11-09 07:12:33,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950145198] [2024-11-09 07:12:33,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:12:33,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 07:12:33,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:33,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 07:12:33,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 07:12:33,496 INFO L87 Difference]: Start difference. First operand 285 states and 348 transitions. Second operand has 15 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 6 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (21), 8 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-09 07:12:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:37,129 INFO L93 Difference]: Finished difference Result 1998 states and 2532 transitions. [2024-11-09 07:12:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-09 07:12:37,130 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 6 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (21), 8 states have call predecessors, (21), 6 states have call successors, (21) Word has length 78 [2024-11-09 07:12:37,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:37,146 INFO L225 Difference]: With dead ends: 1998 [2024-11-09 07:12:37,146 INFO L226 Difference]: Without dead ends: 1715 [2024-11-09 07:12:37,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 209 SyntacticMatches, 6 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2958 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=883, Invalid=8237, Unknown=0, NotChecked=0, Total=9120 [2024-11-09 07:12:37,155 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 752 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:37,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1206 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 07:12:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2024-11-09 07:12:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1379. [2024-11-09 07:12:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 892 states have (on average 1.147982062780269) internal successors, (1024), 963 states have internal predecessors, (1024), 243 states have call successors, (243), 210 states have call predecessors, (243), 243 states have return successors, (355), 246 states have call predecessors, (355), 243 states have call successors, (355) [2024-11-09 07:12:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1622 transitions. [2024-11-09 07:12:37,349 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1622 transitions. Word has length 78 [2024-11-09 07:12:37,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:37,349 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 1622 transitions. [2024-11-09 07:12:37,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 6 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (21), 8 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-09 07:12:37,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1622 transitions. [2024-11-09 07:12:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 07:12:37,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:37,356 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:37,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:12:37,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:37,561 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:37,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1302345638, now seen corresponding path program 1 times [2024-11-09 07:12:37,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:37,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019996917] [2024-11-09 07:12:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:37,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 07:12:37,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:37,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019996917] [2024-11-09 07:12:37,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019996917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:12:37,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899235202] [2024-11-09 07:12:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:37,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:37,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:37,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:12:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:38,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 07:12:38,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:12:38,252 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:12:38,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899235202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:38,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:12:38,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-09 07:12:38,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504537457] [2024-11-09 07:12:38,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:38,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:12:38,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:38,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:12:38,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-11-09 07:12:38,255 INFO L87 Difference]: Start difference. First operand 1379 states and 1622 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-09 07:12:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:38,815 INFO L93 Difference]: Finished difference Result 2449 states and 2938 transitions. [2024-11-09 07:12:38,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 07:12:38,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2024-11-09 07:12:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:38,826 INFO L225 Difference]: With dead ends: 2449 [2024-11-09 07:12:38,827 INFO L226 Difference]: Without dead ends: 1673 [2024-11-09 07:12:38,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:12:38,831 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 106 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:38,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 318 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:12:38,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2024-11-09 07:12:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1565. [2024-11-09 07:12:38,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1001 states have (on average 1.1408591408591409) internal successors, (1142), 1083 states have internal predecessors, (1142), 283 states have call successors, (283), 249 states have call predecessors, (283), 280 states have return successors, (411), 276 states have call predecessors, (411), 283 states have call successors, (411) [2024-11-09 07:12:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1836 transitions. [2024-11-09 07:12:38,999 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1836 transitions. Word has length 82 [2024-11-09 07:12:39,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:39,000 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 1836 transitions. [2024-11-09 07:12:39,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-09 07:12:39,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1836 transitions. [2024-11-09 07:12:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 07:12:39,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:39,006 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:39,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:12:39,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:39,211 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:39,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:39,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2351809, now seen corresponding path program 1 times [2024-11-09 07:12:39,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:39,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187464926] [2024-11-09 07:12:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:39,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 07:12:39,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:39,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187464926] [2024-11-09 07:12:39,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187464926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:12:39,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794116178] [2024-11-09 07:12:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:39,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:39,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:39,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:39,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:12:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:39,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 07:12:39,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 66 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 07:12:39,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:12:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 07:12:40,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794116178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:12:40,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [486358333] [2024-11-09 07:12:40,615 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2024-11-09 07:12:40,615 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:12:40,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:12:40,616 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:12:40,617 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:12:43,232 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 17 for LOIs [2024-11-09 07:12:43,237 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 35 for LOIs [2024-11-09 07:12:43,890 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 45 for LOIs [2024-11-09 07:12:43,896 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 34 for LOIs [2024-11-09 07:12:43,952 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 34 for LOIs [2024-11-09 07:12:44,029 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 47 for LOIs [2024-11-09 07:12:44,045 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 67 for LOIs [2024-11-09 07:12:44,079 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:12:50,049 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16803#(and (not (= ~pumpRunning~0 0)) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (<= ~methaneLevelCritical~0 2147483647) (<= 0 (+ ~methaneLevelCritical~0 2147483648)) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-09 07:12:50,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:12:50,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:12:50,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 24 [2024-11-09 07:12:50,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021221886] [2024-11-09 07:12:50,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:12:50,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 07:12:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:50,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 07:12:50,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=3214, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 07:12:50,056 INFO L87 Difference]: Start difference. First operand 1565 states and 1836 transitions. Second operand has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 13 states have call successors, (35), 5 states have call predecessors, (35), 10 states have return successors, (35), 14 states have call predecessors, (35), 12 states have call successors, (35) [2024-11-09 07:12:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:54,252 INFO L93 Difference]: Finished difference Result 3162 states and 3714 transitions. [2024-11-09 07:12:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-09 07:12:54,253 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 13 states have call successors, (35), 5 states have call predecessors, (35), 10 states have return successors, (35), 14 states have call predecessors, (35), 12 states have call successors, (35) Word has length 110 [2024-11-09 07:12:54,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:54,259 INFO L225 Difference]: With dead ends: 3162 [2024-11-09 07:12:54,261 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 07:12:54,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 286 SyntacticMatches, 16 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5179 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1224, Invalid=13056, Unknown=0, NotChecked=0, Total=14280 [2024-11-09 07:12:54,275 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 797 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:54,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 546 Invalid, 2490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 07:12:54,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 07:12:54,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 07:12:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:12:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 07:12:54,280 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 110 [2024-11-09 07:12:54,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:54,281 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 07:12:54,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 13 states have call successors, (35), 5 states have call predecessors, (35), 10 states have return successors, (35), 14 states have call predecessors, (35), 12 states have call successors, (35) [2024-11-09 07:12:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 07:12:54,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 07:12:54,285 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 07:12:54,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:12:54,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 07:12:54,494 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:54,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 07:13:09,497 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:13:09,521 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~pumpRunning~0 0)) (or (< 1 ~waterLevel~0) (= ~waterLevel~0 1)) (= 1 ~systemActive~0) (<= ~waterLevel~0 2)) Eliminated clause: (and (not (= ~pumpRunning~0 0)) (or (= 2 ~waterLevel~0) (= ~waterLevel~0 1)) (= 1 ~systemActive~0) (<= ~waterLevel~0 2)) [2024-11-09 07:13:09,541 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse1 (= |old(~methaneLevelCritical~0)| 0)) (.cse2 (= ~methaneLevelCritical~0 0))) (and (let ((.cse0 (= 1 ~systemActive~0))) (or (and (= ~pumpRunning~0 0) .cse0 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0))) (or .cse1 (not .cse2)) (or (not .cse1) .cse2))) Eliminated clause: (and (let ((.cse0 (= 1 ~systemActive~0))) (or (and (= ~pumpRunning~0 0) .cse0 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0))) (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse1 (= |old(~methaneLevelCritical~0)| 0)) (.cse2 (= ~methaneLevelCritical~0 0))) (and (or .cse1 (not .cse2)) (or (not .cse1) .cse2))))) [2024-11-09 07:13:09,547 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 07:13:09,552 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse2 (= |old(~waterLevel~0)| 2)) (.cse0 (= |old(~waterLevel~0)| 1))) (and (let ((.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 (= |old(~pumpRunning~0)| 0)) (and .cse1 .cse2))) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not .cse2)) (or (not .cse0) (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse2 (= |old(~waterLevel~0)| 2)) (.cse0 (= |old(~waterLevel~0)| 1))) (and (let ((.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 (= |old(~pumpRunning~0)| 0)) (and .cse1 .cse2))) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not .cse2)) (or (not .cse0) (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1)))))) [2024-11-09 07:13:09,567 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 07:13:09,570 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= ~waterLevel~0 2)) Eliminated clause: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (<= ~waterLevel~0 2)) [2024-11-09 07:13:09,579 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (let ((.cse2 (= |old(~waterLevel~0)| 2)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse3 (= |old(~waterLevel~0)| 1))) (and (or (and .cse0 .cse1 .cse2) .cse3 (and .cse1 .cse2 (= ~pumpRunning~0 1)) (and .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2)) (or (= 2 ~waterLevel~0) (not .cse2)) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (not .cse3)))) Eliminated clause: (exists ((|old(~waterLevel~0)| Int)) (let ((.cse2 (= |old(~waterLevel~0)| 2)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse3 (= |old(~waterLevel~0)| 1))) (and (or (and .cse0 .cse1 .cse2) .cse3 (and .cse1 .cse2 (= ~pumpRunning~0 1)) (and .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2)) (or (= 2 ~waterLevel~0) (not .cse2)) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (not .cse3))))) [2024-11-09 07:13:09,584 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 07:13:09,587 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or .cse0 (<= 1 ~waterLevel~0)) (= 1 ~systemActive~0) (or (= ~methaneLevelCritical~0 0) .cse0) (<= ~waterLevel~0 2))) Eliminated clause: (let ((.cse0 (= ~pumpRunning~0 0))) (and (or .cse0 (< 0 ~waterLevel~0)) (= 1 ~systemActive~0) (<= ~waterLevel~0 2) (or .cse0 (= ~methaneLevelCritical~0 0)))) [2024-11-09 07:13:09,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:13:09 BoogieIcfgContainer [2024-11-09 07:13:09,603 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:13:09,604 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:13:09,604 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:13:09,604 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:13:09,605 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:12:14" (3/4) ... [2024-11-09 07:13:09,608 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 07:13:09,613 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-09 07:13:09,614 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 07:13:09,614 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 07:13:09,614 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 07:13:09,614 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 07:13:09,615 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 07:13:09,615 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 07:13:09,615 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-09 07:13:09,615 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-09 07:13:09,615 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-09 07:13:09,625 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2024-11-09 07:13:09,626 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-09 07:13:09,626 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 07:13:09,627 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 07:13:09,628 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 07:13:09,840 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 07:13:09,844 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 07:13:09,845 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 07:13:09,846 INFO L158 Benchmark]: Toolchain (without parser) took 57521.34ms. Allocated memory was 172.0MB in the beginning and 903.9MB in the end (delta: 731.9MB). Free memory was 143.1MB in the beginning and 716.4MB in the end (delta: -573.2MB). Peak memory consumption was 159.7MB. Max. memory is 16.1GB. [2024-11-09 07:13:09,846 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 119.5MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:13:09,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 756.70ms. Allocated memory is still 172.0MB. Free memory was 143.1MB in the beginning and 120.5MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 07:13:09,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.53ms. Allocated memory is still 172.0MB. Free memory was 120.5MB in the beginning and 118.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:13:09,847 INFO L158 Benchmark]: Boogie Preprocessor took 40.24ms. Allocated memory is still 172.0MB. Free memory was 118.1MB in the beginning and 116.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:13:09,847 INFO L158 Benchmark]: RCFGBuilder took 799.26ms. Allocated memory is still 172.0MB. Free memory was 116.3MB in the beginning and 83.9MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-09 07:13:09,848 INFO L158 Benchmark]: TraceAbstraction took 55592.19ms. Allocated memory was 172.0MB in the beginning and 903.9MB in the end (delta: 731.9MB). Free memory was 83.3MB in the beginning and 724.8MB in the end (delta: -641.4MB). Peak memory consumption was 491.2MB. Max. memory is 16.1GB. [2024-11-09 07:13:09,848 INFO L158 Benchmark]: Witness Printer took 241.10ms. Allocated memory is still 903.9MB. Free memory was 724.8MB in the beginning and 716.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 07:13:09,852 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 119.5MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 756.70ms. Allocated memory is still 172.0MB. Free memory was 143.1MB in the beginning and 120.5MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.53ms. Allocated memory is still 172.0MB. Free memory was 120.5MB in the beginning and 118.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.24ms. Allocated memory is still 172.0MB. Free memory was 118.1MB in the beginning and 116.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 799.26ms. Allocated memory is still 172.0MB. Free memory was 116.3MB in the beginning and 83.9MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 55592.19ms. Allocated memory was 172.0MB in the beginning and 903.9MB in the end (delta: 731.9MB). Free memory was 83.3MB in the beginning and 724.8MB in the end (delta: -641.4MB). Peak memory consumption was 491.2MB. Max. memory is 16.1GB. * Witness Printer took 241.10ms. Allocated memory is still 903.9MB. Free memory was 724.8MB in the beginning and 716.4MB 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,"scenario.i","") [49] - GenericResultAtLocation [Line: 118]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [118] - GenericResultAtLocation [Line: 372]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [372] - GenericResultAtLocation [Line: 476]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [476] - GenericResultAtLocation [Line: 842]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [842] - GenericResultAtLocation [Line: 892]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [892] - GenericResultAtLocation [Line: 930]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [930] - GenericResultAtLocation [Line: 939]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [939] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 935]: 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 11 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.4s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2141 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2117 mSDsluCounter, 3192 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2332 mSDsCounter, 1305 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4493 IncrementalHoareTripleChecker+Invalid, 5798 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1305 mSolverCounterUnsat, 860 mSDtfsCounter, 4493 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 881 GetRequests, 598 SyntacticMatches, 22 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 8204 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1565occurred in iteration=9, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 476 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 766 NumberOfCodeBlocks, 766 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 939 ConstructedInterpolants, 0 QuantifiedInterpolants, 2504 SizeOfPredicates, 11 NumberOfNonLiveVariables, 965 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 397/451 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: 63]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 278]: Location Invariant Derived location invariant: ((((pumpRunning != 0) && (1 == systemActive)) && (waterLevel == 1)) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (((((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) || ((((2 == waterLevel) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0))) || ((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) - InvariantResult [Line: 951]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 270]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: ((((pumpRunning != 0) && ((2 == waterLevel) || (waterLevel == 1))) && (1 == systemActive)) && (waterLevel <= 2)) Ensures: ((((((\old(pumpRunning) != 0) && (pumpRunning == 0)) && ((2 == waterLevel) || (waterLevel == 1))) && (1 == systemActive)) && (waterLevel <= 2)) && ((((((systemActive == \old(systemActive)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 160]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) Ensures: ((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 400]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || ((2 == waterLevel) && (1 == systemActive))) Ensures: ((((((waterLevel != 1) || (pumpRunning == 0)) && ((methaneLevelCritical == 0) || (\old(methaneLevelCritical) == 0))) && (((2 == waterLevel) && (1 == systemActive)) || ((1 == systemActive) && (waterLevel == 1)))) && ((\old(methaneLevelCritical) != 0) || (methaneLevelCritical != 0))) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 941]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((systemActive == \old(systemActive)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 133]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: (((((((((methaneLevelCritical == 0) || ((pumpRunning == 0) && (1 == systemActive))) && (((methaneLevelCritical == 0) || (\old(pumpRunning) == 0)) || (waterLevel == 1))) && (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || (methaneLevelCritical != 0)) || (\old(pumpRunning) != 1))) && ((((\old(pumpRunning) != 0) || ((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (pumpRunning == 1))) || (\old(waterLevel) != 2)) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)))) && ((\old(waterLevel) == 1) || (\old(waterLevel) == 2))) && (((((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1))) || ((((2 == waterLevel) && (1 == systemActive)) && (\old(waterLevel) == 2)) && (pumpRunning == 1))) || (methaneLevelCritical != 0))) && ((\old(waterLevel) != 1) || ((\old(pumpRunning) == 0) && (waterLevel == 1)))) && ((((systemActive == \old(systemActive)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 168]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) Ensures: (((((methaneLevelCritical == 0) || (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2))) && (\old(pumpRunning) == 0)) && ((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1)))) && ((((((systemActive == \old(systemActive)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 388]: Procedure Contract for waterRise Derived contract for procedure waterRise. Ensures: (((2 == waterLevel) && ((((((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) == 2)) || (((pumpRunning == 0) && (\old(waterLevel) == 1)) && (1 == systemActive))) || (((1 == systemActive) && (\old(waterLevel) == 2)) && (pumpRunning == 1))) || (((1 == systemActive) && (methaneLevelCritical != 0)) && (\old(waterLevel) == 2)))) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 194]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: (((((pumpRunning == 0) || (0 < waterLevel)) && (1 == systemActive)) && (waterLevel <= 2)) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) Ensures: (((((methaneLevelCritical == 0) || ((pumpRunning == 0) && (\old(pumpRunning) == 0))) && ((\old(pumpRunning) == 0) || ((pumpRunning == 0) && ((2 == waterLevel) || (waterLevel == 1))))) && ((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1)))) && ((((((systemActive == \old(systemActive)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 289]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: ((((pumpRunning == 0) && (1 == systemActive)) && ((waterLevel < 1) || (waterLevel == 1))) || ((2 == waterLevel) && (1 == systemActive))) Ensures: ((((((pumpRunning == 0) && (1 == systemActive)) && ((waterLevel < 1) || (waterLevel == 1))) || ((2 == waterLevel) && (1 == systemActive))) && (pumpRunning == \result)) && (((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 278]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: ((((pumpRunning != 0) && (1 == systemActive)) && (waterLevel == 1)) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) Ensures: ((((methaneLevelCritical == \result) && ((2 == waterLevel) || (((pumpRunning != 0) && (1 == systemActive)) && (waterLevel == 1)))) && ((2 != waterLevel) || ((pumpRunning == 0) && (1 == systemActive)))) && (((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 07:13:09,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0efe753a-b391-4cef-8c9d-74c7b3e325cb/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE