./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/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_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/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_9290f62a-caa1-49bb-b703-561482546280/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 2bb4b23c61a0ce6fb5d219efb233ba1e5b1970509ba14aea9115d570a0ea376d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:08:39,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:08:39,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:08:39,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:08:39,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:08:39,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:08:39,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:08:39,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:08:39,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:08:39,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:08:39,336 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:08:39,337 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:08:39,337 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:08:39,337 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:08:39,338 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:08:39,338 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:08:39,341 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:08:39,341 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:08:39,342 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:08:39,342 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:08:39,343 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:08:39,343 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:08:39,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:08:39,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:08:39,348 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:08:39,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:08:39,348 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:08:39,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:08:39,349 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:08:39,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:08:39,349 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:08:39,350 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:08:39,350 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:08:39,351 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:08:39,351 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:08:39,352 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:08:39,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:08:39,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:08:39,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:08:39,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:08:39,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:08:39,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:08:39,355 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:08:39,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:08:39,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:08:39,356 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:08:39,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:08:39,357 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_9290f62a-caa1-49bb-b703-561482546280/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bb4b23c61a0ce6fb5d219efb233ba1e5b1970509ba14aea9115d570a0ea376d [2024-11-09 07:08:39,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:08:39,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:08:39,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:08:39,687 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:08:39,688 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:08:39,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c Unable to find full path for "g++" [2024-11-09 07:08:41,777 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:08:42,015 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:08:42,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c [2024-11-09 07:08:42,031 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/data/ab99cb05f/1a0ed1826b58447395211819a25dd8b0/FLAGd2ff070cd [2024-11-09 07:08:42,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/data/ab99cb05f/1a0ed1826b58447395211819a25dd8b0 [2024-11-09 07:08:42,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:08:42,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:08:42,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:08:42,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:08:42,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:08:42,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f95ba5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42, skipping insertion in model container [2024-11-09 07:08:42,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:08:42,379 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_9290f62a-caa1-49bb-b703-561482546280/sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c[1605,1618] [2024-11-09 07:08:42,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:08:42,634 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:08:42,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2024-11-09 07:08:42,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] [2024-11-09 07:08:42,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [96] [2024-11-09 07:08:42,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [462] [2024-11-09 07:08:42,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [503] [2024-11-09 07:08:42,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [605] [2024-11-09 07:08:42,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [703] [2024-11-09 07:08:42,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [916] [2024-11-09 07:08:42,658 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_9290f62a-caa1-49bb-b703-561482546280/sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c[1605,1618] [2024-11-09 07:08:42,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:08:42,810 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:08:42,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42 WrapperNode [2024-11-09 07:08:42,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:08:42,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:08:42,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:08:42,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:08:42,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,887 INFO L138 Inliner]: procedures = 56, calls = 102, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 195 [2024-11-09 07:08:42,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:08:42,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:08:42,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:08:42,889 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:08:42,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:08:42,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:08:42,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:08:42,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:08:42,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (1/1) ... [2024-11-09 07:08:42,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:08:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:08:43,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:08:43,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:08:43,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:08:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 07:08:43,037 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 07:08:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 07:08:43,037 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 07:08:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 07:08:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 07:08:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-09 07:08:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-09 07:08:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 07:08:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 07:08:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 07:08:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 07:08:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-09 07:08:43,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-09 07:08:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-09 07:08:43,041 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-09 07:08:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:08:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 07:08:43,042 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 07:08:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:08:43,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:08:43,137 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:08:43,140 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:08:43,486 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-09 07:08:43,487 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:08:43,628 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:08:43,629 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 07:08:43,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:08:43 BoogieIcfgContainer [2024-11-09 07:08:43,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:08:43,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:08:43,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:08:43,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:08:43,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:08:42" (1/3) ... [2024-11-09 07:08:43,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757b1ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:08:43, skipping insertion in model container [2024-11-09 07:08:43,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:08:42" (2/3) ... [2024-11-09 07:08:43,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757b1ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:08:43, skipping insertion in model container [2024-11-09 07:08:43,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:08:43" (3/3) ... [2024-11-09 07:08:43,640 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2024-11-09 07:08:43,661 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:08:43,661 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:08:43,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:08:43,741 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;@699455f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:08:43,741 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:08:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 07:08:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 07:08:43,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:43,761 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:08:43,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:08:43,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:43,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1368988377, now seen corresponding path program 1 times [2024-11-09 07:08:43,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:43,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750629381] [2024-11-09 07:08:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:43,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:44,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:44,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750629381] [2024-11-09 07:08:44,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750629381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:08:44,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:08:44,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:08:44,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144315994] [2024-11-09 07:08:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:08:44,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 07:08:44,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:08:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 07:08:44,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:08:44,161 INFO L87 Difference]: Start difference. First operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:08:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:44,272 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2024-11-09 07:08:44,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 07:08:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-09 07:08:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:44,288 INFO L225 Difference]: With dead ends: 142 [2024-11-09 07:08:44,289 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 07:08:44,294 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 07:08:44,299 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:44,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:08:44,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 07:08:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-09 07:08:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 50 states have internal predecessors, (56), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 07:08:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2024-11-09 07:08:44,374 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 17 [2024-11-09 07:08:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:44,376 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2024-11-09 07:08:44,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:08:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2024-11-09 07:08:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 07:08:44,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:44,382 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:08:44,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:08:44,384 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:08:44,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:44,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1092626326, now seen corresponding path program 1 times [2024-11-09 07:08:44,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:44,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358970838] [2024-11-09 07:08:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:44,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:44,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:44,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358970838] [2024-11-09 07:08:44,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358970838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:08:44,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:08:44,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:08:44,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471144084] [2024-11-09 07:08:44,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:08:44,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:08:44,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:08:44,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:08:44,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:08:44,567 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:08:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:44,642 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2024-11-09 07:08:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:08:44,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-09 07:08:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:44,646 INFO L225 Difference]: With dead ends: 106 [2024-11-09 07:08:44,646 INFO L226 Difference]: Without dead ends: 59 [2024-11-09 07:08:44,647 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 07:08:44,651 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:44,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 107 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:08:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-09 07:08:44,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-09 07:08:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 07:08:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2024-11-09 07:08:44,675 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 18 [2024-11-09 07:08:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:44,677 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2024-11-09 07:08:44,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:08:44,678 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2024-11-09 07:08:44,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 07:08:44,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:44,680 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:08:44,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:08:44,680 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:08:44,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:44,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1348796893, now seen corresponding path program 1 times [2024-11-09 07:08:44,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:44,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039579295] [2024-11-09 07:08:44,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:44,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:44,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039579295] [2024-11-09 07:08:44,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039579295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:08:44,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:08:44,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:08:44,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148487153] [2024-11-09 07:08:44,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:08:44,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:08:44,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:08:44,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:08:44,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:08:44,829 INFO L87 Difference]: Start difference. First operand 59 states and 76 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:08:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:44,966 INFO L93 Difference]: Finished difference Result 173 states and 225 transitions. [2024-11-09 07:08:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:08:44,967 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-09 07:08:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:44,970 INFO L225 Difference]: With dead ends: 173 [2024-11-09 07:08:44,971 INFO L226 Difference]: Without dead ends: 116 [2024-11-09 07:08:44,973 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 07:08:44,975 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 63 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:44,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 133 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:08:44,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-09 07:08:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2024-11-09 07:08:45,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 85 states have internal predecessors, (95), 26 states have call successors, (26), 16 states have call predecessors, (26), 16 states have return successors, (26), 19 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-09 07:08:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2024-11-09 07:08:45,028 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 21 [2024-11-09 07:08:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:45,029 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2024-11-09 07:08:45,029 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:08:45,029 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2024-11-09 07:08:45,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 07:08:45,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:45,031 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:08:45,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:08:45,031 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:08:45,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:45,034 INFO L85 PathProgramCache]: Analyzing trace with hash 641709545, now seen corresponding path program 1 times [2024-11-09 07:08:45,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:45,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979970318] [2024-11-09 07:08:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:45,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:45,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:45,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979970318] [2024-11-09 07:08:45,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979970318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:08:45,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:08:45,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:08:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231851309] [2024-11-09 07:08:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:08:45,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:08:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:08:45,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:08:45,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:08:45,233 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:08:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:45,402 INFO L93 Difference]: Finished difference Result 302 states and 399 transitions. [2024-11-09 07:08:45,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:08:45,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-09 07:08:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:45,408 INFO L225 Difference]: With dead ends: 302 [2024-11-09 07:08:45,412 INFO L226 Difference]: Without dead ends: 191 [2024-11-09 07:08:45,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:08:45,417 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 40 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:45,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 166 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:08:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-09 07:08:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2024-11-09 07:08:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 123 states have (on average 1.2926829268292683) internal successors, (159), 138 states have internal predecessors, (159), 36 states have call successors, (36), 30 states have call predecessors, (36), 30 states have return successors, (44), 33 states have call predecessors, (44), 36 states have call successors, (44) [2024-11-09 07:08:45,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 239 transitions. [2024-11-09 07:08:45,505 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 239 transitions. Word has length 24 [2024-11-09 07:08:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:45,506 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 239 transitions. [2024-11-09 07:08:45,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 07:08:45,506 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 239 transitions. [2024-11-09 07:08:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 07:08:45,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:45,511 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] [2024-11-09 07:08:45,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:08:45,512 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:08:45,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:45,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1252329017, now seen corresponding path program 1 times [2024-11-09 07:08:45,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:45,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574824868] [2024-11-09 07:08:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:45,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:45,940 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 07:08:45,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:45,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574824868] [2024-11-09 07:08:45,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574824868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:08:45,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:08:45,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:08:45,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673760662] [2024-11-09 07:08:45,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:08:45,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:08:45,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:08:45,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:08:45,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:08:45,947 INFO L87 Difference]: Start difference. First operand 190 states and 239 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 07:08:46,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:46,231 INFO L93 Difference]: Finished difference Result 546 states and 692 transitions. [2024-11-09 07:08:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:08:46,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-11-09 07:08:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:46,238 INFO L225 Difference]: With dead ends: 546 [2024-11-09 07:08:46,238 INFO L226 Difference]: Without dead ends: 358 [2024-11-09 07:08:46,239 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 07:08:46,242 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 81 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:46,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 295 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:08:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-09 07:08:46,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 316. [2024-11-09 07:08:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 213 states have (on average 1.2910798122065728) internal successors, (275), 231 states have internal predecessors, (275), 51 states have call successors, (51), 47 states have call predecessors, (51), 51 states have return successors, (63), 51 states have call predecessors, (63), 51 states have call successors, (63) [2024-11-09 07:08:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 389 transitions. [2024-11-09 07:08:46,307 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 389 transitions. Word has length 37 [2024-11-09 07:08:46,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:46,308 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 389 transitions. [2024-11-09 07:08:46,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 07:08:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 389 transitions. [2024-11-09 07:08:46,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 07:08:46,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:46,313 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 07:08:46,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:08:46,314 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:08:46,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:46,314 INFO L85 PathProgramCache]: Analyzing trace with hash -756747394, now seen corresponding path program 1 times [2024-11-09 07:08:46,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:46,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313422737] [2024-11-09 07:08:46,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:46,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:46,421 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 07:08:46,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313422737] [2024-11-09 07:08:46,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313422737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:08:46,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:08:46,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:08:46,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918686166] [2024-11-09 07:08:46,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:08:46,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:08:46,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:08:46,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:08:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:08:46,426 INFO L87 Difference]: Start difference. First operand 316 states and 389 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:08:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:46,532 INFO L93 Difference]: Finished difference Result 523 states and 661 transitions. [2024-11-09 07:08:46,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:08:46,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-11-09 07:08:46,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:46,537 INFO L225 Difference]: With dead ends: 523 [2024-11-09 07:08:46,538 INFO L226 Difference]: Without dead ends: 521 [2024-11-09 07:08:46,538 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 07:08:46,539 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 51 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:46,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 119 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:08:46,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-11-09 07:08:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 505. [2024-11-09 07:08:46,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 335 states have (on average 1.2955223880597015) internal successors, (434), 366 states have internal predecessors, (434), 85 states have call successors, (85), 77 states have call predecessors, (85), 84 states have return successors, (119), 82 states have call predecessors, (119), 85 states have call successors, (119) [2024-11-09 07:08:46,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 638 transitions. [2024-11-09 07:08:46,597 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 638 transitions. Word has length 40 [2024-11-09 07:08:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:46,598 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 638 transitions. [2024-11-09 07:08:46,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:08:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 638 transitions. [2024-11-09 07:08:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 07:08:46,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:46,602 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 07:08:46,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:08:46,602 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:08:46,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:46,603 INFO L85 PathProgramCache]: Analyzing trace with hash -898980291, now seen corresponding path program 1 times [2024-11-09 07:08:46,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:46,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991455055] [2024-11-09 07:08:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:08:46,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:46,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991455055] [2024-11-09 07:08:46,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991455055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:08:46,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:08:46,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:08:46,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718792166] [2024-11-09 07:08:46,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:08:46,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:08:46,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:08:46,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:08:46,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:08:46,658 INFO L87 Difference]: Start difference. First operand 505 states and 638 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 07:08:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:46,830 INFO L93 Difference]: Finished difference Result 576 states and 731 transitions. [2024-11-09 07:08:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:08:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2024-11-09 07:08:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:46,833 INFO L225 Difference]: With dead ends: 576 [2024-11-09 07:08:46,833 INFO L226 Difference]: Without dead ends: 242 [2024-11-09 07:08:46,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:08:46,836 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 94 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:46,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 134 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:08:46,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-09 07:08:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 217. [2024-11-09 07:08:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 142 states have (on average 1.2253521126760563) internal successors, (174), 154 states have internal predecessors, (174), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (52), 36 states have call predecessors, (52), 36 states have call successors, (52) [2024-11-09 07:08:46,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 262 transitions. [2024-11-09 07:08:46,868 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 262 transitions. Word has length 63 [2024-11-09 07:08:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:46,869 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 262 transitions. [2024-11-09 07:08:46,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-09 07:08:46,870 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 262 transitions. [2024-11-09 07:08:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 07:08:46,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:46,871 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:08:46,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 07:08:46,872 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:08:46,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1114280983, now seen corresponding path program 1 times [2024-11-09 07:08:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:46,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229837749] [2024-11-09 07:08:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 07:08:47,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:47,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229837749] [2024-11-09 07:08:47,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229837749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:08:47,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246928641] [2024-11-09 07:08:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:47,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:08:47,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:08:47,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:08:47,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:08:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:47,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:08:47,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 07:08:47,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 07:08:48,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246928641] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:08:48,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:08:48,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 5] total 15 [2024-11-09 07:08:48,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438207912] [2024-11-09 07:08:48,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:08:48,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:08:48,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:08:48,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:08:48,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:08:48,033 INFO L87 Difference]: Start difference. First operand 217 states and 262 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:08:48,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:48,274 INFO L93 Difference]: Finished difference Result 565 states and 686 transitions. [2024-11-09 07:08:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:08:48,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2024-11-09 07:08:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:48,278 INFO L225 Difference]: With dead ends: 565 [2024-11-09 07:08:48,279 INFO L226 Difference]: Without dead ends: 350 [2024-11-09 07:08:48,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-09 07:08:48,280 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 40 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:48,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 242 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:08:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-09 07:08:48,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 341. [2024-11-09 07:08:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 225 states have (on average 1.2) internal successors, (270), 241 states have internal predecessors, (270), 56 states have call successors, (56), 53 states have call predecessors, (56), 59 states have return successors, (78), 56 states have call predecessors, (78), 56 states have call successors, (78) [2024-11-09 07:08:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 404 transitions. [2024-11-09 07:08:48,348 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 404 transitions. Word has length 76 [2024-11-09 07:08:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:48,349 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 404 transitions. [2024-11-09 07:08:48,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:08:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 404 transitions. [2024-11-09 07:08:48,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 07:08:48,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:48,355 INFO L215 NwaCegarLoop]: trace histogram [4, 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 07:08:48,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:08:48,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:08:48,557 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:08:48,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash -342537208, now seen corresponding path program 1 times [2024-11-09 07:08:48,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:48,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903746008] [2024-11-09 07:08:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:48,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 07:08:48,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903746008] [2024-11-09 07:08:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903746008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:08:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513102384] [2024-11-09 07:08:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:48,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:08:48,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:08:48,986 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:08:48,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:08:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:49,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 07:08:49,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 07:08:50,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 07:08:51,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513102384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:08:51,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [734985778] [2024-11-09 07:08:51,109 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2024-11-09 07:08:51,109 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:08:51,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:08:51,119 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:08:51,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:08:56,432 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 122 for LOIs [2024-11-09 07:08:56,471 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 25 for LOIs [2024-11-09 07:08:56,698 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 23 for LOIs [2024-11-09 07:08:56,764 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 24 for LOIs [2024-11-09 07:08:56,800 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 46 for LOIs [2024-11-09 07:08:56,830 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 138 for LOIs [2024-11-09 07:08:57,015 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:09:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [734985778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:09:07,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:09:07,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [13, 16, 13] total 66 [2024-11-09 07:09:07,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949013152] [2024-11-09 07:09:07,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:09:07,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 07:09:07,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:09:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 07:09:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=3676, Unknown=0, NotChecked=0, Total=4290 [2024-11-09 07:09:07,692 INFO L87 Difference]: Start difference. First operand 341 states and 404 transitions. Second operand has 32 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 07:09:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:18,537 INFO L93 Difference]: Finished difference Result 814 states and 990 transitions. [2024-11-09 07:09:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 07:09:18,538 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 79 [2024-11-09 07:09:18,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:18,542 INFO L225 Difference]: With dead ends: 814 [2024-11-09 07:09:18,542 INFO L226 Difference]: Without dead ends: 539 [2024-11-09 07:09:18,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 182 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3033 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=1387, Invalid=7543, Unknown=0, NotChecked=0, Total=8930 [2024-11-09 07:09:18,547 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 303 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:18,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 434 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 07:09:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-09 07:09:18,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 451. [2024-11-09 07:09:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 291 states have (on average 1.1718213058419245) internal successors, (341), 315 states have internal predecessors, (341), 76 states have call successors, (76), 73 states have call predecessors, (76), 83 states have return successors, (102), 74 states have call predecessors, (102), 76 states have call successors, (102) [2024-11-09 07:09:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 519 transitions. [2024-11-09 07:09:18,654 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 519 transitions. Word has length 79 [2024-11-09 07:09:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:18,654 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 519 transitions. [2024-11-09 07:09:18,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 07:09:18,655 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 519 transitions. [2024-11-09 07:09:18,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 07:09:18,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:18,657 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 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, 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 07:09:18,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:09:18,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:18,862 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:09:18,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:18,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1341957462, now seen corresponding path program 1 times [2024-11-09 07:09:18,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:09:18,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140632666] [2024-11-09 07:09:18,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:18,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:09:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 7 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-09 07:09:19,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:19,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140632666] [2024-11-09 07:09:19,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140632666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:09:19,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350984939] [2024-11-09 07:09:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:19,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:19,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:09:19,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:09:19,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:09:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:19,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:09:19,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:09:19,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:09:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 10 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 07:09:19,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350984939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:09:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1871082649] [2024-11-09 07:09:19,505 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2024-11-09 07:09:19,505 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:09:19,505 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:09:19,506 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:09:19,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:09:20,877 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 27 for LOIs [2024-11-09 07:09:20,883 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 24 for LOIs [2024-11-09 07:09:21,101 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 51 for LOIs [2024-11-09 07:09:21,223 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 31 for LOIs [2024-11-09 07:09:21,264 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 6 for LOIs [2024-11-09 07:09:21,265 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 18 for LOIs [2024-11-09 07:09:21,268 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 42 for LOIs [2024-11-09 07:09:21,277 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:09:24,343 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10998#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (not (= ~methaneLevelCritical~0 0)) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= 0 ~methaneLevelCritical~0) (<= 0 (+ ~pumpRunning~0 2147483648)) (<= ~methaneLevelCritical~0 2147483647) (not (= ~methAndRunningLastTime~0 0)))' at error location [2024-11-09 07:09:24,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:09:24,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:09:24,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 16 [2024-11-09 07:09:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162928818] [2024-11-09 07:09:24,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:09:24,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:09:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:09:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:09:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=2640, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 07:09:24,347 INFO L87 Difference]: Start difference. First operand 451 states and 519 transitions. Second operand has 16 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 3 states have call successors, (26), 3 states have call predecessors, (26), 8 states have return successors, (27), 7 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-09 07:09:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:24,797 INFO L93 Difference]: Finished difference Result 974 states and 1149 transitions. [2024-11-09 07:09:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:09:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 3 states have call successors, (26), 3 states have call predecessors, (26), 8 states have return successors, (27), 7 states have call predecessors, (27), 3 states have call successors, (27) Word has length 119 [2024-11-09 07:09:24,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:24,801 INFO L225 Difference]: With dead ends: 974 [2024-11-09 07:09:24,802 INFO L226 Difference]: Without dead ends: 695 [2024-11-09 07:09:24,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 309 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=354, Invalid=2952, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 07:09:24,804 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 182 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:24,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 318 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:09:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-11-09 07:09:24,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 652. [2024-11-09 07:09:24,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 419 states have (on average 1.1479713603818615) internal successors, (481), 452 states have internal predecessors, (481), 112 states have call successors, (112), 108 states have call predecessors, (112), 120 states have return successors, (145), 107 states have call predecessors, (145), 112 states have call successors, (145) [2024-11-09 07:09:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 738 transitions. [2024-11-09 07:09:24,926 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 738 transitions. Word has length 119 [2024-11-09 07:09:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:24,927 INFO L471 AbstractCegarLoop]: Abstraction has 652 states and 738 transitions. [2024-11-09 07:09:24,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 3 states have call successors, (26), 3 states have call predecessors, (26), 8 states have return successors, (27), 7 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-09 07:09:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 738 transitions. [2024-11-09 07:09:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 07:09:24,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:24,931 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 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, 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 07:09:24,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 07:09:25,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 07:09:25,136 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:09:25,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash 957609486, now seen corresponding path program 2 times [2024-11-09 07:09:25,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:09:25,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267934198] [2024-11-09 07:09:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:25,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:09:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 07:09:25,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:25,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267934198] [2024-11-09 07:09:25,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267934198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:09:25,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415081353] [2024-11-09 07:09:25,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:09:25,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:25,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:09:25,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:09:25,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:09:25,413 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 07:09:25,413 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:09:25,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 07:09:25,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 07:09:25,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:09:25,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415081353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:09:25,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:09:25,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 18 [2024-11-09 07:09:25,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685188262] [2024-11-09 07:09:25,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:09:25,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:09:25,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:09:25,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:09:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:09:25,587 INFO L87 Difference]: Start difference. First operand 652 states and 738 transitions. Second operand has 11 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-09 07:09:26,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:26,015 INFO L93 Difference]: Finished difference Result 1124 states and 1284 transitions. [2024-11-09 07:09:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 07:09:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) Word has length 119 [2024-11-09 07:09:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:26,020 INFO L225 Difference]: With dead ends: 1124 [2024-11-09 07:09:26,020 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 07:09:26,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-11-09 07:09:26,027 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 31 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:26,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 601 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:09:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 07:09:26,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 07:09:26,028 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 07:09:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 07:09:26,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 119 [2024-11-09 07:09:26,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:26,030 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 07:09:26,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-09 07:09:26,031 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 07:09:26,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 07:09:26,033 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 07:09:26,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 07:09:26,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:26,241 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:09:26,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 07:09:42,618 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:09:42,644 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (let ((.cse0 (= 1 ~systemActive~0))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not .cse0) (< 1 ~methaneLevelCritical~0) (< ~methaneLevelCritical~0 0)) (or .cse0 (and (not (= ~waterLevel~0 1)) (not (= 0 ~systemActive~0)))))) Eliminated clause: (or (= 1 ~systemActive~0) (and (not (= ~waterLevel~0 1)) (not (= 0 ~systemActive~0)))) [2024-11-09 07:09:42,668 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse7 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse1 (not .cse7)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse5 (= 0 ~systemActive~0))) (and (let ((.cse0 (<= |old(~methaneLevelCritical~0)| 1)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (<= 0 |old(~methaneLevelCritical~0)|)) (.cse4 (= ~methAndRunningLastTime~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse2 .cse3) (and (= ~pumpRunning~0 0) .cse4 .cse5))) (or .cse1 .cse6 .cse5) (or (and (<= ~methaneLevelCritical~0 1) (not .cse6) (<= 0 ~methaneLevelCritical~0)) .cse7 .cse5)))) Eliminated clause: (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse7 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse1 (not .cse7)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse5 (= 0 ~systemActive~0))) (and (let ((.cse0 (<= |old(~methaneLevelCritical~0)| 1)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (<= 0 |old(~methaneLevelCritical~0)|)) (.cse4 (= ~methAndRunningLastTime~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse2 .cse3) (and (= ~pumpRunning~0 0) .cse4 .cse5))) (or .cse1 .cse6 .cse5) (or (and (<= ~methaneLevelCritical~0 1) (not .cse6) (<= 0 ~methaneLevelCritical~0)) .cse7 .cse5))))) [2024-11-09 07:09:42,674 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 07:09:42,680 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse2 (= 1 ~systemActive~0)) (.cse1 (= 0 ~systemActive~0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0)))) (and (or .cse0 (= ~methAndRunningLastTime~0 0)) (or (and (= |old(~pumpRunning~0)| 0) .cse1) (and (<= ~methaneLevelCritical~0 1) .cse2 (<= 0 ~methaneLevelCritical~0))) (or (not .cse2) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0) (= |old(~methAndRunningLastTime~0)| ~methAndRunningLastTime~0))) (or (= ~pumpRunning~0 0) (not .cse1)) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)))) Eliminated clause: (let ((.cse1 (= 0 ~systemActive~0))) (and (exists ((|old(~methAndRunningLastTime~0)| Int) (|old(~pumpRunning~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse2 (= 1 ~systemActive~0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0)))) (and (or .cse0 (= ~methAndRunningLastTime~0 0)) (or (and (= |old(~pumpRunning~0)| 0) .cse1) (and (<= ~methaneLevelCritical~0 1) .cse2 (<= 0 ~methaneLevelCritical~0))) (or (not .cse2) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0) (= |old(~methAndRunningLastTime~0)| ~methAndRunningLastTime~0))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1))))) (or (= ~pumpRunning~0 0) (not .cse1)))) [2024-11-09 07:09:42,692 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 07:09:42,699 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (let ((.cse0 (= 1 ~systemActive~0))) (and (let ((.cse2 (= ~methAndRunningLastTime~0 0)) (.cse1 (= ~methaneLevelCritical~0 0))) (or (and (<= ~methaneLevelCritical~0 1) .cse0 (not .cse1) (<= 0 ~methaneLevelCritical~0)) (and (= ~pumpRunning~0 0) .cse2 (= 0 ~systemActive~0)) (and .cse2 .cse1 .cse0))) (or (not .cse0) (= |old(~waterLevel~0)| ~waterLevel~0)))) Eliminated clause: (let ((.cse2 (= ~methAndRunningLastTime~0 0)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse0 (= 1 ~systemActive~0))) (or (and (<= ~methaneLevelCritical~0 1) .cse0 (not .cse1) (<= 0 ~methaneLevelCritical~0)) (and (= ~pumpRunning~0 0) .cse2 (= 0 ~systemActive~0)) (and .cse2 .cse1 .cse0))) [2024-11-09 07:09:42,755 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,756 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,756 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 07:09:42,757 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] [2024-11-09 07:09:42,757 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] [2024-11-09 07:09:42,757 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,758 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,758 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,758 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,758 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,759 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,763 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,764 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,764 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,764 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,764 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,765 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,765 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,765 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,766 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,766 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,766 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,766 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,767 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,767 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,771 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~head~0!offset [2024-11-09 07:09:42,772 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,772 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,773 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,773 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,773 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,773 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,774 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,774 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,778 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,779 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,779 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,779 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,779 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,779 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,780 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,780 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,780 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,780 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,781 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 07:09:42,781 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] [2024-11-09 07:09:42,781 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] [2024-11-09 07:09:42,781 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,781 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,781 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,782 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,782 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,782 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,782 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,782 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,783 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,783 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,783 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,783 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,783 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,783 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,784 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,784 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,784 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-11-09 07:09:42,784 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-11-09 07:09:42,784 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] [2024-11-09 07:09:42,785 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,785 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,785 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-11-09 07:09:42,785 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-11-09 07:09:42,785 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~head~0!base [2024-11-09 07:09:42,789 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse0 (<= ~methaneLevelCritical~0 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (<= 0 ~methaneLevelCritical~0))) (or (and .cse0 .cse1 (= |old(~pumpRunning~0)| 0) .cse2) (and (= ~methaneLevelCritical~0 0) .cse1) (and .cse0 (= ~methAndRunningLastTime~0 0) .cse1 .cse2)))) Eliminated clause: (let ((.cse0 (<= ~methaneLevelCritical~0 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (<= 0 ~methaneLevelCritical~0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2) (and (= ~methaneLevelCritical~0 0) .cse1) (and .cse0 (= ~methAndRunningLastTime~0 0) .cse1 .cse2))) [2024-11-09 07:09:42,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:09:42 BoogieIcfgContainer [2024-11-09 07:09:42,802 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:09:42,803 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:09:42,803 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:09:42,803 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:09:42,804 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:08:43" (3/4) ... [2024-11-09 07:09:42,807 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 07:09:42,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-09 07:09:42,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 07:09:42,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 07:09:42,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 07:09:42,811 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 07:09:42,812 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2024-11-09 07:09:42,812 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 07:09:42,812 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-09 07:09:42,812 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-09 07:09:42,819 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-11-09 07:09:42,820 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-09 07:09:42,821 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 07:09:42,821 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 07:09:42,822 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 07:09:42,847 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(methAndRunningLastTime) != 0) || (methAndRunningLastTime == 0)) && (((\old(pumpRunning) == 0) && (0 == systemActive)) || (((methaneLevelCritical <= 1) && (1 == systemActive)) && (0 <= methaneLevelCritical)))) && ((1 != systemActive) || (((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) && (\old(methAndRunningLastTime) == methAndRunningLastTime)))) && ((pumpRunning == 0) || (0 != systemActive))) && (((\old(methAndRunningLastTime) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-09 07:09:42,895 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(methAndRunningLastTime) != 0) || (methAndRunningLastTime == 0)) && (((\old(pumpRunning) == 0) && (0 == systemActive)) || (((methaneLevelCritical <= 1) && (1 == systemActive)) && (0 <= methaneLevelCritical)))) && ((1 != systemActive) || (((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) && (\old(methAndRunningLastTime) == methAndRunningLastTime)))) && ((pumpRunning == 0) || (0 != systemActive))) && (((\old(methAndRunningLastTime) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-09 07:09:42,944 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 07:09:42,945 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 07:09:42,945 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 07:09:42,946 INFO L158 Benchmark]: Toolchain (without parser) took 60887.22ms. Allocated memory was 121.6MB in the beginning and 645.9MB in the end (delta: 524.3MB). Free memory was 67.6MB in the beginning and 451.9MB in the end (delta: -384.3MB). Peak memory consumption was 142.3MB. Max. memory is 16.1GB. [2024-11-09 07:09:42,946 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:09:42,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.70ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 67.3MB in the beginning and 107.2MB in the end (delta: -39.9MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2024-11-09 07:09:42,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.91ms. Allocated memory is still 146.8MB. Free memory was 107.2MB in the beginning and 105.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 07:09:42,947 INFO L158 Benchmark]: Boogie Preprocessor took 46.38ms. Allocated memory is still 146.8MB. Free memory was 105.2MB in the beginning and 103.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:09:42,948 INFO L158 Benchmark]: RCFGBuilder took 689.82ms. Allocated memory is still 146.8MB. Free memory was 103.7MB in the beginning and 75.8MB in the end (delta: 27.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-09 07:09:42,948 INFO L158 Benchmark]: TraceAbstraction took 59170.60ms. Allocated memory was 146.8MB in the beginning and 645.9MB in the end (delta: 499.1MB). Free memory was 75.2MB in the beginning and 460.3MB in the end (delta: -385.2MB). Peak memory consumption was 351.5MB. Max. memory is 16.1GB. [2024-11-09 07:09:42,949 INFO L158 Benchmark]: Witness Printer took 142.01ms. Allocated memory is still 645.9MB. Free memory was 460.3MB in the beginning and 451.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 07:09:42,951 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.70ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 67.3MB in the beginning and 107.2MB in the end (delta: -39.9MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.91ms. Allocated memory is still 146.8MB. Free memory was 107.2MB in the beginning and 105.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.38ms. Allocated memory is still 146.8MB. Free memory was 105.2MB in the beginning and 103.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 689.82ms. Allocated memory is still 146.8MB. Free memory was 103.7MB in the beginning and 75.8MB in the end (delta: 27.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 59170.60ms. Allocated memory was 146.8MB in the beginning and 645.9MB in the end (delta: 499.1MB). Free memory was 75.2MB in the beginning and 460.3MB in the end (delta: -385.2MB). Peak memory consumption was 351.5MB. Max. memory is 16.1GB. * Witness Printer took 142.01ms. Allocated memory is still 645.9MB. Free memory was 460.3MB in the beginning and 451.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] - GenericResultAtLocation [Line: 96]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [96] - GenericResultAtLocation [Line: 462]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [462] - GenericResultAtLocation [Line: 503]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [503] - GenericResultAtLocation [Line: 605]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [605] - GenericResultAtLocation [Line: 703]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [703] - GenericResultAtLocation [Line: 916]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [916] - 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: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~head~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IntegerLiteral[1]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#length,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~head~0!base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.5s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 918 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 899 mSDsluCounter, 2625 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1835 mSDsCounter, 322 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2976 IncrementalHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 322 mSolverCounterUnsat, 790 mSDtfsCounter, 2976 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 976 GetRequests, 770 SyntacticMatches, 9 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4423 ImplicationChecksByTransitivity, 22.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=652occurred in iteration=10, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 227 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1006 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1262 ConstructedInterpolants, 0 QuantifiedInterpolants, 3119 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1179 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 776/843 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: OVERALL_TIME: 5.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 7, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 65, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 88, TOOLS_POST_TIME: 1.5s, TOOLS_POST_CALL_APPLICATIONS: 51, TOOLS_POST_CALL_TIME: 1.6s, TOOLS_POST_RETURN_APPLICATIONS: 44, TOOLS_POST_RETURN_TIME: 1.4s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 164, TOOLS_QUANTIFIERELIM_TIME: 4.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 213, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 40, DOMAIN_JOIN_TIME: 1.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 65, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 2.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 44, CALL_SUMMARIZER_CACHE_MISSES: 6, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 985, DAG_COMPRESSION_RETAINED_NODES: 175, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 516]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 926]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 927]: Loop Invariant Derived loop invariant: ((((((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (splverifierCounter == 0)) && (0 == systemActive))) || (((1 == systemActive) && (methaneLevelCritical == 1)) && (splverifierCounter == 0))) - InvariantResult [Line: 710]: Location Invariant Derived location invariant: ((((((\old(methAndRunningLastTime) != 0) || (methAndRunningLastTime == 0)) && (((\old(pumpRunning) == 0) && (0 == systemActive)) || (((methaneLevelCritical <= 1) && (1 == systemActive)) && (0 <= methaneLevelCritical)))) && ((1 != systemActive) || (((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) && (\old(methAndRunningLastTime) == methAndRunningLastTime)))) && ((pumpRunning == 0) || (0 != systemActive))) && (((\old(methAndRunningLastTime) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) - ProcedureContractResult [Line: 818]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: ((1 == systemActive) || ((waterLevel != 1) && (0 != systemActive))) Ensures: (((pumpRunning == 0) && ((1 == systemActive) || ((waterLevel != 1) && (0 != systemActive)))) && ((((((head == \old(head)) && (methAndRunningLastTime == \old(methAndRunningLastTime))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 734]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: ((((((pumpRunning == 0) && (methaneLevelCritical <= 1)) && (1 == systemActive)) && (0 <= methaneLevelCritical)) || ((methaneLevelCritical == 0) && (1 == systemActive))) || ((((methaneLevelCritical <= 1) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (0 <= methaneLevelCritical))) Ensures: (((((((pumpRunning == 0) && (methaneLevelCritical <= 1)) && (1 == systemActive)) && (0 <= methaneLevelCritical)) || ((methaneLevelCritical == 0) && (1 == systemActive))) || ((((methaneLevelCritical <= 1) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (0 <= methaneLevelCritical))) && (((((((head == \old(head)) && (methAndRunningLastTime == \old(methAndRunningLastTime))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 636]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Ensures: (((((((((\old(methaneLevelCritical) <= 1) && (\old(methaneLevelCritical) != 0)) && (1 == systemActive)) && (0 <= \old(methaneLevelCritical))) || ((((\old(methaneLevelCritical) <= 1) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (0 <= \old(methaneLevelCritical)))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (0 == systemActive))) && (((((methaneLevelCritical <= 1) && (methaneLevelCritical != 0)) && (0 <= methaneLevelCritical)) || (\old(methaneLevelCritical) != 0)) || (0 == systemActive))) && (((methaneLevelCritical == 0) || (\old(methaneLevelCritical) == 0)) || (0 == systemActive))) && ((((((head == \old(head)) && (methAndRunningLastTime == \old(methAndRunningLastTime))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 710]: Procedure Contract for timeShift Derived contract for procedure timeShift. Requires: ((pumpRunning == 0) || (0 != systemActive)) Ensures: ((((((((((1 == systemActive) || ((\old(pumpRunning) == 0) && (0 == systemActive))) && (((methaneLevelCritical == 0) || (1 != systemActive)) || ((pumpRunning == 0) && (methaneLevelCritical == 1)))) && (methAndRunningLastTime == 0)) && ((((((\old(pumpRunning) != 0) || (\old(methAndRunningLastTime) != 0)) || (\old(waterLevel) < 2)) || (methaneLevelCritical != 0)) || ((2 <= waterLevel) && (pumpRunning == 1))) || (0 == systemActive))) && (((((\old(pumpRunning) != 0) || (\old(methAndRunningLastTime) != 0)) || (\old(waterLevel) < 2)) || (1 < waterLevel)) || (0 == systemActive))) && ((pumpRunning == 0) || (0 != systemActive))) && ((((\old(pumpRunning) != 0) || (pumpRunning == 0)) || (\old(methAndRunningLastTime) != 0)) || (((methaneLevelCritical == 0) && (2 <= waterLevel)) && (pumpRunning == 1)))) && ((((\old(pumpRunning) != 0) || (\old(methAndRunningLastTime) != 0)) || (\old(waterLevel) != 1)) || (waterLevel == 1))) && ((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 506]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 648]: Procedure Contract for isMethaneLevelCritical Derived contract for procedure isMethaneLevelCritical. Requires: ((((methaneLevelCritical <= 1) && (1 == systemActive)) && (0 <= methaneLevelCritical)) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: ((((\result == methaneLevelCritical) || (0 == systemActive)) && ((((methaneLevelCritical <= 1) && (1 == systemActive)) && (0 <= methaneLevelCritical)) || ((pumpRunning == 0) && (0 == systemActive)))) && (((((((head == \old(head)) && (methAndRunningLastTime == \old(methAndRunningLastTime))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 624]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: ((((((methaneLevelCritical <= 1) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (0 <= methaneLevelCritical)) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (0 == systemActive))) || (((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) Ensures: ((((((((methaneLevelCritical <= 1) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (0 <= methaneLevelCritical)) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (0 == systemActive))) || (((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) && ((((((pumpRunning != 0) || (methaneLevelCritical == 0)) || (1 != systemActive)) || (\old(waterLevel) < 2)) || (\old(waterLevel) == waterLevel)) || (methAndRunningLastTime != 0))) && ((((((head == \old(head)) && (methAndRunningLastTime == \old(methAndRunningLastTime))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 742]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: ((((((pumpRunning == 0) && (methaneLevelCritical <= 1)) && (1 == systemActive)) && (0 <= methaneLevelCritical)) || ((methaneLevelCritical == 0) && (1 == systemActive))) || ((((methaneLevelCritical <= 1) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (0 <= methaneLevelCritical))) Ensures: (((((((waterLevel != 1) || (pumpRunning == \old(pumpRunning))) && (((\old(pumpRunning) != 0) || (pumpRunning == 0)) || (methaneLevelCritical == 0))) && ((((((methaneLevelCritical <= 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (0 <= methaneLevelCritical)) || ((methaneLevelCritical == 0) && (1 == systemActive))) || ((((methaneLevelCritical <= 1) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (0 <= methaneLevelCritical)))) && (((((\old(pumpRunning) != 0) || (methaneLevelCritical != 0)) || (waterLevel < 2)) || (methAndRunningLastTime != 0)) || (pumpRunning == 1))) && (((\old(pumpRunning) != 0) || (pumpRunning == 0)) || ((2 <= waterLevel) && (pumpRunning == 1)))) && ((((((head == \old(head)) && (methAndRunningLastTime == \old(methAndRunningLastTime))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 826]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: (((methaneLevelCritical <= 1) && (1 == systemActive)) && (0 <= methaneLevelCritical)) Ensures: (((((((((\result == 0) || (pumpRunning != 0)) || (methaneLevelCritical != 0)) || (waterLevel < 2)) && (methaneLevelCritical <= 1)) && ((methaneLevelCritical == 0) || (\result == methaneLevelCritical))) && (1 == systemActive)) && (0 <= methaneLevelCritical)) && (((((((head == \old(head)) && (methAndRunningLastTime == \old(methAndRunningLastTime))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 07:09:43,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9290f62a-caa1-49bb-b703-561482546280/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE