./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh --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 f645b80d4169704e02b3c19c65a00755e1e28cc942f5a2526cd4b4e1dcca30cf --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:45:22,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:45:22,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 14:45:22,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:45:22,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:45:22,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:45:22,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:45:22,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:45:22,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:45:22,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:45:22,442 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:45:22,442 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:45:22,443 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:45:22,443 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:45:22,444 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:45:22,444 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:45:22,445 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:45:22,445 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:45:22,446 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:45:22,446 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:45:22,447 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:45:22,449 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:45:22,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:45:22,450 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:45:22,450 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:45:22,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:45:22,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:45:22,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:45:22,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:45:22,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:45:22,453 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:45:22,453 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:45:22,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:45:22,453 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:45:22,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:45:22,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:45:22,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:45:22,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:45:22,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:45:22,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:45:22,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:45:22,455 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:45:22,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:45:22,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:45:22,456 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:45:22,456 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:45:22,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:45:22,456 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_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f645b80d4169704e02b3c19c65a00755e1e28cc942f5a2526cd4b4e1dcca30cf [2023-12-02 14:45:22,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:45:22,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:45:22,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:45:22,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:45:22,678 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:45:22,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2023-12-02 14:45:25,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:45:25,590 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:45:25,591 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2023-12-02 14:45:25,606 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/data/4f031ff71/e8fe46ebdfd442519b03f0bb32c33e6d/FLAGdb391dba4 [2023-12-02 14:45:25,618 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/data/4f031ff71/e8fe46ebdfd442519b03f0bb32c33e6d [2023-12-02 14:45:25,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:45:25,622 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:45:25,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:45:25,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:45:25,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:45:25,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:45:25" (1/1) ... [2023-12-02 14:45:25,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4066231b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:25, skipping insertion in model container [2023-12-02 14:45:25,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:45:25" (1/1) ... [2023-12-02 14:45:25,681 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:45:25,910 WARN L240 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_e3245ccb-973a-4279-87e0-b690d2b4dc0e/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c[18939,18952] [2023-12-02 14:45:25,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:45:25,925 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:45:25,936 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] [2023-12-02 14:45:25,937 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [87] [2023-12-02 14:45:25,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [190] [2023-12-02 14:45:25,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [232] [2023-12-02 14:45:25,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [340] [2023-12-02 14:45:25,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [548] [2023-12-02 14:45:25,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [615] [2023-12-02 14:45:25,939 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [981] [2023-12-02 14:45:25,999 WARN L240 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_e3245ccb-973a-4279-87e0-b690d2b4dc0e/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c[18939,18952] [2023-12-02 14:45:25,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:45:26,020 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:45:26,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26 WrapperNode [2023-12-02 14:45:26,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:45:26,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:45:26,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:45:26,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:45:26,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,071 INFO L138 Inliner]: procedures = 57, calls = 100, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 209 [2023-12-02 14:45:26,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:45:26,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:45:26,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:45:26,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:45:26,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,085 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,090 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,097 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,098 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:45:26,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:45:26,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:45:26,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:45:26,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (1/1) ... [2023-12-02 14:45:26,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:45:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:45:26,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:45:26,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:45:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:45:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 14:45:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 14:45:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-12-02 14:45:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-12-02 14:45:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 14:45:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 14:45:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 14:45:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 14:45:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 14:45:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 14:45:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 14:45:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 14:45:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:45:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 14:45:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 14:45:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:45:26,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:45:26,244 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:45:26,246 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:45:26,475 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:45:26,596 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:45:26,596 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 14:45:26,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:26 BoogieIcfgContainer [2023-12-02 14:45:26,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:45:26,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:45:26,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:45:26,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:45:26,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:45:25" (1/3) ... [2023-12-02 14:45:26,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541f0bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:45:26, skipping insertion in model container [2023-12-02 14:45:26,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:26" (2/3) ... [2023-12-02 14:45:26,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541f0bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:45:26, skipping insertion in model container [2023-12-02 14:45:26,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:26" (3/3) ... [2023-12-02 14:45:26,607 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2023-12-02 14:45:26,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:45:26,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:45:26,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:45:26,668 INFO L357 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, mHoare=true, 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;@40e3df82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:45:26,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:45:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 44 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 14:45:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 14:45:26,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:26,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:45:26,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:26,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1480967398, now seen corresponding path program 1 times [2023-12-02 14:45:26,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:26,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940423724] [2023-12-02 14:45:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:26,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:45:26,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:26,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940423724] [2023-12-02 14:45:26,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940423724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:26,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:45:26,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:45:26,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507827727] [2023-12-02 14:45:26,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:26,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 14:45:26,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:26,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 14:45:26,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 14:45:26,888 INFO L87 Difference]: Start difference. First operand has 56 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 44 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) 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) [2023-12-02 14:45:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:26,946 INFO L93 Difference]: Finished difference Result 110 states and 149 transitions. [2023-12-02 14:45:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 14:45:26,948 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 [2023-12-02 14:45:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:26,955 INFO L225 Difference]: With dead ends: 110 [2023-12-02 14:45:26,955 INFO L226 Difference]: Without dead ends: 51 [2023-12-02 14:45:26,959 INFO L412 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 [2023-12-02 14:45:26,962 INFO L413 NwaCegarLoop]: 54 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, 54 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:26,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:45:26,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-02 14:45:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-02 14:45:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 40 states have internal predecessors, (44), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 14:45:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2023-12-02 14:45:26,998 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 17 [2023-12-02 14:45:26,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:26,998 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2023-12-02 14:45:26,999 INFO L496 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) [2023-12-02 14:45:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-12-02 14:45:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 14:45:27,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:27,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:45:27,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:45:27,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:27,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1630555840, now seen corresponding path program 1 times [2023-12-02 14:45:27,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:27,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687005134] [2023-12-02 14:45:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:27,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:45:27,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:27,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687005134] [2023-12-02 14:45:27,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687005134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:27,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:45:27,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:45:27,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354824223] [2023-12-02 14:45:27,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:27,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:45:27,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:27,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:45:27,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:45:27,103 INFO L87 Difference]: Start difference. First operand 51 states and 65 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) [2023-12-02 14:45:27,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:27,144 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2023-12-02 14:45:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:45:27,144 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 [2023-12-02 14:45:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:27,146 INFO L225 Difference]: With dead ends: 79 [2023-12-02 14:45:27,146 INFO L226 Difference]: Without dead ends: 43 [2023-12-02 14:45:27,147 INFO L412 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 [2023-12-02 14:45:27,148 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:27,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:45:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-02 14:45:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-02 14:45:27,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 35 states have internal predecessors, (38), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 14:45:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2023-12-02 14:45:27,158 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 18 [2023-12-02 14:45:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:27,158 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2023-12-02 14:45:27,159 INFO L496 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) [2023-12-02 14:45:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2023-12-02 14:45:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 14:45:27,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:27,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:45:27,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:45:27,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:27,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:27,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2058248590, now seen corresponding path program 1 times [2023-12-02 14:45:27,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:27,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481050018] [2023-12-02 14:45:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:27,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:45:27,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:27,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481050018] [2023-12-02 14:45:27,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481050018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:27,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:45:27,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:45:27,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479915134] [2023-12-02 14:45:27,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:27,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:45:27,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:45:27,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:45:27,336 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-12-02 14:45:27,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:27,412 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2023-12-02 14:45:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:45:27,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 20 [2023-12-02 14:45:27,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:27,414 INFO L225 Difference]: With dead ends: 84 [2023-12-02 14:45:27,414 INFO L226 Difference]: Without dead ends: 43 [2023-12-02 14:45:27,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:45:27,416 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 49 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:27,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 51 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:45:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-02 14:45:27,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-02 14:45:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 14:45:27,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2023-12-02 14:45:27,428 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 20 [2023-12-02 14:45:27,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:27,428 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2023-12-02 14:45:27,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-12-02 14:45:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2023-12-02 14:45:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 14:45:27,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:27,429 INFO L195 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] [2023-12-02 14:45:27,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:45:27,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:27,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:27,430 INFO L85 PathProgramCache]: Analyzing trace with hash -499409778, now seen corresponding path program 1 times [2023-12-02 14:45:27,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:27,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049643649] [2023-12-02 14:45:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:27,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:45:27,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:27,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049643649] [2023-12-02 14:45:27,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049643649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:27,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:45:27,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:45:27,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466565840] [2023-12-02 14:45:27,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:27,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:45:27,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:45:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:45:27,512 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-12-02 14:45:27,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:27,572 INFO L93 Difference]: Finished difference Result 119 states and 150 transitions. [2023-12-02 14:45:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:45:27,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 23 [2023-12-02 14:45:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:27,574 INFO L225 Difference]: With dead ends: 119 [2023-12-02 14:45:27,575 INFO L226 Difference]: Without dead ends: 78 [2023-12-02 14:45:27,575 INFO L412 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 [2023-12-02 14:45:27,577 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:27,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 86 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:45:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-02 14:45:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2023-12-02 14:45:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 58 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-02 14:45:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2023-12-02 14:45:27,594 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 23 [2023-12-02 14:45:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:27,594 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2023-12-02 14:45:27,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-12-02 14:45:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2023-12-02 14:45:27,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 14:45:27,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:27,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:45:27,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:45:27,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:27,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2093529154, now seen corresponding path program 1 times [2023-12-02 14:45:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:27,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892994237] [2023-12-02 14:45:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:27,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:45:27,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892994237] [2023-12-02 14:45:27,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892994237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:27,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:45:27,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:45:27,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034381704] [2023-12-02 14:45:27,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:27,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:45:27,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:27,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:45:27,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:45:27,679 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:45:27,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:27,750 INFO L93 Difference]: Finished difference Result 150 states and 192 transitions. [2023-12-02 14:45:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:45:27,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-12-02 14:45:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:27,754 INFO L225 Difference]: With dead ends: 150 [2023-12-02 14:45:27,754 INFO L226 Difference]: Without dead ends: 148 [2023-12-02 14:45:27,754 INFO L412 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 [2023-12-02 14:45:27,756 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:27,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 73 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:45:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-02 14:45:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-12-02 14:45:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 112 states have internal predecessors, (125), 24 states have call successors, (24), 24 states have call predecessors, (24), 24 states have return successors, (40), 24 states have call predecessors, (40), 24 states have call successors, (40) [2023-12-02 14:45:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 189 transitions. [2023-12-02 14:45:27,785 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 189 transitions. Word has length 28 [2023-12-02 14:45:27,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:27,786 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 189 transitions. [2023-12-02 14:45:27,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:45:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 189 transitions. [2023-12-02 14:45:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 14:45:27,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:27,790 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 14:45:27,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:45:27,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:27,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash 369348808, now seen corresponding path program 1 times [2023-12-02 14:45:27,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:27,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294216227] [2023-12-02 14:45:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:27,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 14:45:27,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:27,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294216227] [2023-12-02 14:45:27,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294216227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:27,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:45:27,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:45:27,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112817479] [2023-12-02 14:45:27,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:27,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:45:27,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:27,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:45:27,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:45:27,884 INFO L87 Difference]: Start difference. First operand 148 states and 189 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 14:45:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:27,961 INFO L93 Difference]: Finished difference Result 276 states and 352 transitions. [2023-12-02 14:45:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:45:27,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2023-12-02 14:45:27,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:27,964 INFO L225 Difference]: With dead ends: 276 [2023-12-02 14:45:27,964 INFO L226 Difference]: Without dead ends: 130 [2023-12-02 14:45:27,965 INFO L412 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 [2023-12-02 14:45:27,966 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 37 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:27,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 125 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:45:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-02 14:45:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2023-12-02 14:45:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 90 states have internal predecessors, (99), 20 states have call successors, (20), 20 states have call predecessors, (20), 20 states have return successors, (30), 19 states have call predecessors, (30), 20 states have call successors, (30) [2023-12-02 14:45:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-12-02 14:45:27,987 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 50 [2023-12-02 14:45:27,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:27,988 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-12-02 14:45:27,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 14:45:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-12-02 14:45:27,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 14:45:27,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:27,991 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 14:45:27,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 14:45:27,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:27,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:27,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2063984568, now seen corresponding path program 1 times [2023-12-02 14:45:27,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:27,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65355789] [2023-12-02 14:45:27,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:27,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 14:45:28,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:28,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65355789] [2023-12-02 14:45:28,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65355789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:45:28,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87152910] [2023-12-02 14:45:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:28,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:45:28,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:45:28,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:45:28,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:45:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:28,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:45:28,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:45:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:45:28,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:45:28,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87152910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:28,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:45:28,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 14:45:28,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481061343] [2023-12-02 14:45:28,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:28,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:45:28,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:45:28,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:45:28,328 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 14:45:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:28,385 INFO L93 Difference]: Finished difference Result 229 states and 293 transitions. [2023-12-02 14:45:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:45:28,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 55 [2023-12-02 14:45:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:28,388 INFO L225 Difference]: With dead ends: 229 [2023-12-02 14:45:28,388 INFO L226 Difference]: Without dead ends: 111 [2023-12-02 14:45:28,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:45:28,390 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 21 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:28,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 82 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:45:28,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-02 14:45:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-12-02 14:45:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 83 states have internal predecessors, (89), 18 states have call successors, (18), 18 states have call predecessors, (18), 18 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-02 14:45:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2023-12-02 14:45:28,407 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 55 [2023-12-02 14:45:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:28,407 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2023-12-02 14:45:28,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 14:45:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2023-12-02 14:45:28,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 14:45:28,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:28,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:45:28,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-02 14:45:28,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 14:45:28,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:28,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2146567247, now seen corresponding path program 1 times [2023-12-02 14:45:28,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:28,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405038339] [2023-12-02 14:45:28,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:28,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:45:28,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405038339] [2023-12-02 14:45:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405038339] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:45:28,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207442132] [2023-12-02 14:45:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:28,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:45:28,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:45:28,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:45:28,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:45:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:29,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 14:45:29,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:45:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:45:29,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:45:29,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207442132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:29,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:45:29,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-12-02 14:45:29,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650417089] [2023-12-02 14:45:29,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:45:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:45:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-02 14:45:29,394 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 14:45:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:29,761 INFO L93 Difference]: Finished difference Result 292 states and 352 transitions. [2023-12-02 14:45:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:45:29,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 58 [2023-12-02 14:45:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:29,764 INFO L225 Difference]: With dead ends: 292 [2023-12-02 14:45:29,764 INFO L226 Difference]: Without dead ends: 183 [2023-12-02 14:45:29,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-12-02 14:45:29,766 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 110 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:29,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 148 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:45:29,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-02 14:45:29,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2023-12-02 14:45:29,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 114 states have internal predecessors, (124), 23 states have call successors, (23), 23 states have call predecessors, (23), 25 states have return successors, (30), 23 states have call predecessors, (30), 23 states have call successors, (30) [2023-12-02 14:45:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2023-12-02 14:45:29,787 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 58 [2023-12-02 14:45:29,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:29,788 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2023-12-02 14:45:29,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 14:45:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2023-12-02 14:45:29,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 14:45:29,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:29,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:45:29,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:45:29,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 14:45:29,993 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:29,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:29,993 INFO L85 PathProgramCache]: Analyzing trace with hash 268554390, now seen corresponding path program 1 times [2023-12-02 14:45:29,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:29,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448903058] [2023-12-02 14:45:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:29,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:45:30,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:30,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448903058] [2023-12-02 14:45:30,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448903058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:45:30,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284015068] [2023-12-02 14:45:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:30,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:45:30,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:45:30,502 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:45:30,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:45:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:30,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 14:45:30,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:45:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:45:30,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:45:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 14:45:31,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284015068] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:45:31,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [752521778] [2023-12-02 14:45:31,278 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 14:45:31,278 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:45:31,281 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:45:31,284 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:45:31,285 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:45:34,778 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 122 for LOIs [2023-12-02 14:45:34,815 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 159 for LOIs [2023-12-02 14:45:37,663 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 157 for LOIs [2023-12-02 14:45:37,943 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 156 for LOIs [2023-12-02 14:45:38,074 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:45:50,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [752521778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:45:50,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:45:50,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [14, 11, 11] total 47 [2023-12-02 14:45:50,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103786395] [2023-12-02 14:45:50,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:45:50,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 14:45:50,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:45:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 14:45:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1857, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 14:45:50,404 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand has 21 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 14:45:55,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:45:55,677 INFO L93 Difference]: Finished difference Result 420 states and 489 transitions. [2023-12-02 14:45:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 14:45:55,678 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 61 [2023-12-02 14:45:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:45:55,681 INFO L225 Difference]: With dead ends: 420 [2023-12-02 14:45:55,681 INFO L226 Difference]: Without dead ends: 269 [2023-12-02 14:45:55,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 142 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=463, Invalid=2617, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 14:45:55,684 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 108 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:45:55,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 280 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 14:45:55,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-02 14:45:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 254. [2023-12-02 14:45:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 173 states have (on average 1.1791907514450868) internal successors, (204), 186 states have internal predecessors, (204), 38 states have call successors, (38), 38 states have call predecessors, (38), 42 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2023-12-02 14:45:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 291 transitions. [2023-12-02 14:45:55,760 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 291 transitions. Word has length 61 [2023-12-02 14:45:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:45:55,760 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 291 transitions. [2023-12-02 14:45:55,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 14:45:55,761 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 291 transitions. [2023-12-02 14:45:55,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 14:45:55,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:45:55,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:45:55,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:45:55,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 14:45:55,963 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:45:55,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:45:55,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1972896613, now seen corresponding path program 1 times [2023-12-02 14:45:55,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:45:55,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61962883] [2023-12-02 14:45:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:55,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:45:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:45:56,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:45:56,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61962883] [2023-12-02 14:45:56,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61962883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:45:56,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961061270] [2023-12-02 14:45:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:45:56,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:45:56,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:45:56,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:45:56,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:45:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:45:56,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 14:45:56,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:45:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:45:56,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:45:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 14:45:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961061270] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:45:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [282338047] [2023-12-02 14:45:57,147 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 14:45:57,147 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:45:57,147 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:45:57,148 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:45:57,148 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:46:00,830 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 142 for LOIs [2023-12-02 14:46:00,935 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 16 for LOIs [2023-12-02 14:46:01,049 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 25 for LOIs [2023-12-02 14:46:01,111 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 8 for LOIs [2023-12-02 14:46:01,113 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 34 for LOIs [2023-12-02 14:46:01,120 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 16 for LOIs [2023-12-02 14:46:01,121 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:46:03,330 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4992#(and (<= ~methaneLevelCritical~0 1) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= 0 ~methaneLevelCritical~0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| ~methaneLevelCritical~0))' at error location [2023-12-02 14:46:03,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:46:03,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:46:03,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 28 [2023-12-02 14:46:03,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259850543] [2023-12-02 14:46:03,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:46:03,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 14:46:03,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:46:03,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 14:46:03,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=3298, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 14:46:03,334 INFO L87 Difference]: Start difference. First operand 254 states and 291 transitions. Second operand has 28 states, 25 states have (on average 4.04) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (21), 9 states have call predecessors, (21), 12 states have call successors, (21) [2023-12-02 14:46:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:46:04,618 INFO L93 Difference]: Finished difference Result 675 states and 801 transitions. [2023-12-02 14:46:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-02 14:46:04,619 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.04) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (21), 9 states have call predecessors, (21), 12 states have call successors, (21) Word has length 64 [2023-12-02 14:46:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:46:04,622 INFO L225 Difference]: With dead ends: 675 [2023-12-02 14:46:04,622 INFO L226 Difference]: Without dead ends: 492 [2023-12-02 14:46:04,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2978 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=835, Invalid=6997, Unknown=0, NotChecked=0, Total=7832 [2023-12-02 14:46:04,625 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 782 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:46:04,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 647 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 14:46:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-02 14:46:04,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 381. [2023-12-02 14:46:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 263 states have (on average 1.1749049429657794) internal successors, (309), 281 states have internal predecessors, (309), 56 states have call successors, (56), 56 states have call predecessors, (56), 61 states have return successors, (70), 57 states have call predecessors, (70), 56 states have call successors, (70) [2023-12-02 14:46:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 435 transitions. [2023-12-02 14:46:04,688 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 435 transitions. Word has length 64 [2023-12-02 14:46:04,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:46:04,689 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 435 transitions. [2023-12-02 14:46:04,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.04) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (21), 9 states have call predecessors, (21), 12 states have call successors, (21) [2023-12-02 14:46:04,689 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 435 transitions. [2023-12-02 14:46:04,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 14:46:04,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:46:04,691 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-12-02 14:46:04,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:46:04,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 14:46:04,893 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:46:04,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:46:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash -321772300, now seen corresponding path program 1 times [2023-12-02 14:46:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:46:04,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317949076] [2023-12-02 14:46:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:46:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:46:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:46:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 67 proven. 9 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-02 14:46:05,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:46:05,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317949076] [2023-12-02 14:46:05,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317949076] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:46:05,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250262525] [2023-12-02 14:46:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:46:05,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:46:05,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:46:05,089 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:46:05,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:46:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:46:05,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-02 14:46:05,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:46:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 42 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 14:46:05,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:46:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 71 proven. 26 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 14:46:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250262525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:46:06,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1752577177] [2023-12-02 14:46:06,171 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 14:46:06,171 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:46:06,172 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:46:06,172 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:46:06,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:46:07,727 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 15 for LOIs [2023-12-02 14:46:07,730 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 47 for LOIs [2023-12-02 14:46:07,877 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 52 for LOIs [2023-12-02 14:46:07,953 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 1 for LOIs [2023-12-02 14:46:07,953 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 7 for LOIs [2023-12-02 14:46:07,954 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:46:09,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7150#(and (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (<= ~methaneLevelCritical~0 2147483647) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (<= 0 (+ ~methaneLevelCritical~0 2147483648)) (not (= ~methAndRunningLastTime~0 0)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| ~methaneLevelCritical~0))' at error location [2023-12-02 14:46:09,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:46:09,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:46:09,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 14] total 29 [2023-12-02 14:46:09,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044210629] [2023-12-02 14:46:09,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:46:09,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 14:46:09,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:46:09,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 14:46:09,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=2465, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 14:46:09,824 INFO L87 Difference]: Start difference. First operand 381 states and 435 transitions. Second operand has 29 states, 27 states have (on average 5.703703703703703) internal successors, (154), 28 states have internal predecessors, (154), 15 states have call successors, (28), 7 states have call predecessors, (28), 13 states have return successors, (31), 14 states have call predecessors, (31), 15 states have call successors, (31) [2023-12-02 14:46:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:46:11,664 INFO L93 Difference]: Finished difference Result 642 states and 751 transitions. [2023-12-02 14:46:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-02 14:46:11,664 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.703703703703703) internal successors, (154), 28 states have internal predecessors, (154), 15 states have call successors, (28), 7 states have call predecessors, (28), 13 states have return successors, (31), 14 states have call predecessors, (31), 15 states have call successors, (31) Word has length 106 [2023-12-02 14:46:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:46:11,665 INFO L225 Difference]: With dead ends: 642 [2023-12-02 14:46:11,665 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 14:46:11,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 281 SyntacticMatches, 9 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3075 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1151, Invalid=9355, Unknown=0, NotChecked=0, Total=10506 [2023-12-02 14:46:11,671 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 349 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:46:11,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 664 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 14:46:11,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 14:46:11,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 14:46:11,672 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) [2023-12-02 14:46:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 14:46:11,672 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2023-12-02 14:46:11,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:46:11,672 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 14:46:11,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.703703703703703) internal successors, (154), 28 states have internal predecessors, (154), 15 states have call successors, (28), 7 states have call predecessors, (28), 13 states have return successors, (31), 14 states have call predecessors, (31), 15 states have call successors, (31) [2023-12-02 14:46:11,673 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 14:46:11,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 14:46:11,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 14:46:11,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 14:46:11,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 14:46:11,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 14:46:17,744 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 371 377) no Hoare annotation was computed. [2023-12-02 14:46:17,744 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 371 377) the Hoare annotation is: true [2023-12-02 14:46:17,744 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 264 275) the Hoare annotation is: (let ((.cse6 (= |old(~methaneLevelCritical~0)| 0)) (.cse3 (= ~methaneLevelCritical~0 0))) (let ((.cse0 (not (= ~waterLevel~0 1))) (.cse7 (not .cse3)) (.cse9 (not (= ~pumpRunning~0 1))) (.cse1 (not .cse6)) (.cse2 (not (= ~pumpRunning~0 0))) (.cse8 (not (= 2 ~waterLevel~0))) (.cse4 (= 0 ~systemActive~0)) (.cse5 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or .cse0 .cse2 .cse6 .cse7 .cse4 .cse5) (or .cse8 .cse6 .cse7 .cse9 .cse4) (or .cse2 .cse8 .cse6 .cse7 .cse4 .cse5) (or .cse1 .cse3 .cse8 .cse9 .cse4) (or .cse1 .cse2 .cse3 .cse8 .cse4 .cse5)))) [2023-12-02 14:46:17,744 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 264 275) no Hoare annotation was computed. [2023-12-02 14:46:17,744 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 276 284) the Hoare annotation is: true [2023-12-02 14:46:17,744 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 276 284) no Hoare annotation was computed. [2023-12-02 14:46:17,745 INFO L895 garLoopResultBuilder]: At program point L209(line 209) the Hoare annotation is: (let ((.cse3 (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (.cse2 (not (= |old(~waterLevel~0)| 1))) (.cse7 (= ~methAndRunningLastTime~0 0)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse5 (not (= |old(~waterLevel~0)| 2))) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or (not (= |old(~pumpRunning~0)| 1)) .cse3 .cse5 .cse4) (let ((.cse6 (select |#memory_int| 1))) (or (not (= (select |#length| 12) 25)) .cse0 (not (= (select .cse6 0) 48)) (not (= 9 (select |#length| 11))) .cse1 .cse7 (not (= 9 (select |#length| 5))) (not (= 30 (select |#length| 7))) (not (= 31 (select |#length| 2))) (not (= (select |#valid| 12) 1)) (not (= 2 (select |#length| 1))) (not (= 9 (select |#length| 14))) .cse2 (not (= 1 ~systemActive~0)) (not (= (select |#length| 15) 25)) (not (= (select |#valid| 6) 1)) (not (= (select |#valid| 3) 1)) (not (= ~head~0.offset 0)) (not (= (select |#valid| 11) 1)) (not (= (select |#length| 9) 21)) (not (= 30 (select |#length| 10))) (not (= (select |#valid| 15) 1)) (not (= (select |#length| 6) 21)) (not (= 1 (select |#valid| 5))) (not (= (select |#length| 8) 9)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= ~methaneLevelCritical~0 0)) (not (= (select .cse6 1) 0)) (not (= (select |#valid| 1) 1)) (not (= (select |#valid| 8) 1)) (not (= 30 (select |#length| 13))) (not (= (select |#valid| 4) 1)) (not (= (select |#valid| 7) 1)) (not (= (select |#valid| 10) 1)) (not (= (select |#valid| 14) 1)) (not (= (select |#valid| 13) 1)) (< |#StackHeapBarrier| 1) (not (= 30 (select |#length| 4))) (not (= (select |#valid| 2) 1)) (not (= (select |#valid| 9) 1)) (not (= ~head~0.base 0)) (not (= ~cleanupTimeShifts~0 4)))) (or (and .cse7 (= 2 ~waterLevel~0) (= ~pumpRunning~0 1)) .cse0 .cse1 .cse5 .cse4))) [2023-12-02 14:46:17,745 INFO L899 garLoopResultBuilder]: For program point L209-1(line 209) no Hoare annotation was computed. [2023-12-02 14:46:17,745 INFO L895 garLoopResultBuilder]: At program point L424(line 424) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse5 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (and .cse2 .cse3 (= 2 ~waterLevel~0)) .cse4 .cse5) (or .cse0 (and .cse2 .cse3 (= ~waterLevel~0 1)) .cse1 (not (= |old(~waterLevel~0)| 1)) .cse5) (or (not (= |old(~pumpRunning~0)| 1)) .cse4 .cse5))) [2023-12-02 14:46:17,745 INFO L899 garLoopResultBuilder]: For program point L424-1(lines 405 429) no Hoare annotation was computed. [2023-12-02 14:46:17,746 INFO L899 garLoopResultBuilder]: For program point L358-1(lines 358 364) no Hoare annotation was computed. [2023-12-02 14:46:17,746 INFO L899 garLoopResultBuilder]: For program point L986(line 986) no Hoare annotation was computed. [2023-12-02 14:46:17,746 INFO L899 garLoopResultBuilder]: For program point L351-1(lines 350 369) no Hoare annotation was computed. [2023-12-02 14:46:17,746 INFO L899 garLoopResultBuilder]: For program point L413(lines 413 421) no Hoare annotation was computed. [2023-12-02 14:46:17,746 INFO L899 garLoopResultBuilder]: For program point L409(lines 409 426) no Hoare annotation was computed. [2023-12-02 14:46:17,746 INFO L899 garLoopResultBuilder]: For program point L215(lines 215 225) no Hoare annotation was computed. [2023-12-02 14:46:17,746 INFO L899 garLoopResultBuilder]: For program point L211(lines 211 228) no Hoare annotation was computed. [2023-12-02 14:46:17,746 INFO L899 garLoopResultBuilder]: For program point L211-1(lines 203 231) no Hoare annotation was computed. [2023-12-02 14:46:17,746 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 347 370) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse5 (not (= |old(~waterLevel~0)| 2))) (.cse6 (= 0 ~systemActive~0)) (.cse4 (= 2 ~waterLevel~0))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4) .cse5 .cse6) (or .cse0 (and .cse2 .cse3 (= ~waterLevel~0 1)) .cse1 (not (= |old(~waterLevel~0)| 1)) .cse6) (or (not (= |old(~pumpRunning~0)| 1)) .cse5 .cse6 (and .cse4 (= ~pumpRunning~0 1))))) [2023-12-02 14:46:17,746 INFO L899 garLoopResultBuilder]: For program point L216(lines 216 222) no Hoare annotation was computed. [2023-12-02 14:46:17,747 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 347 370) no Hoare annotation was computed. [2023-12-02 14:46:17,747 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 986) no Hoare annotation was computed. [2023-12-02 14:46:17,747 INFO L895 garLoopResultBuilder]: At program point L419(line 419) the Hoare annotation is: (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or (not (= |old(~pumpRunning~0)| 1)) .cse2 .cse3) (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 1)) .cse3))) [2023-12-02 14:46:17,747 INFO L902 garLoopResultBuilder]: At program point L96(line 96) the Hoare annotation is: true [2023-12-02 14:46:17,747 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 90 119) no Hoare annotation was computed. [2023-12-02 14:46:17,747 INFO L899 garLoopResultBuilder]: For program point L96-1(line 96) no Hoare annotation was computed. [2023-12-02 14:46:17,747 INFO L899 garLoopResultBuilder]: For program point L115(lines 90 119) no Hoare annotation was computed. [2023-12-02 14:46:17,747 INFO L899 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2023-12-02 14:46:17,747 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 90 119) the Hoare annotation is: true [2023-12-02 14:46:17,747 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 108) no Hoare annotation was computed. [2023-12-02 14:46:17,748 INFO L902 garLoopResultBuilder]: At program point L104-1(lines 104 108) the Hoare annotation is: true [2023-12-02 14:46:17,748 INFO L902 garLoopResultBuilder]: At program point L100-2(lines 100 114) the Hoare annotation is: true [2023-12-02 14:46:17,748 INFO L895 garLoopResultBuilder]: At program point L597-2(lines 589 602) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0)) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse0 (= 2 ~waterLevel~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 1)) (and .cse4 .cse5 .cse1 .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse4 .cse5 .cse0 .cse1 .cse2 .cse3))) [2023-12-02 14:46:17,748 INFO L899 garLoopResultBuilder]: For program point L560(lines 559 606) no Hoare annotation was computed. [2023-12-02 14:46:17,748 INFO L895 garLoopResultBuilder]: At program point L581(line 581) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0)) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse0 (= 2 ~waterLevel~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 1)) (and .cse4 .cse5 .cse1 .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse4 .cse5 .cse0 .cse1 .cse2 .cse3))) [2023-12-02 14:46:17,748 INFO L899 garLoopResultBuilder]: For program point L610(lines 549 614) no Hoare annotation was computed. [2023-12-02 14:46:17,748 INFO L899 garLoopResultBuilder]: For program point L569(lines 569 575) no Hoare annotation was computed. [2023-12-02 14:46:17,748 INFO L899 garLoopResultBuilder]: For program point L569-1(lines 569 575) no Hoare annotation was computed. [2023-12-02 14:46:17,748 INFO L899 garLoopResultBuilder]: For program point L177(lines 177 184) no Hoare annotation was computed. [2023-12-02 14:46:17,749 INFO L899 garLoopResultBuilder]: For program point L177-2(lines 177 184) no Hoare annotation was computed. [2023-12-02 14:46:17,749 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 14:46:17,749 INFO L895 garLoopResultBuilder]: At program point L607(lines 558 608) the Hoare annotation is: false [2023-12-02 14:46:17,749 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 14:46:17,749 INFO L899 garLoopResultBuilder]: For program point L579(lines 579 585) no Hoare annotation was computed. [2023-12-02 14:46:17,749 INFO L899 garLoopResultBuilder]: For program point L579-1(lines 579 585) no Hoare annotation was computed. [2023-12-02 14:46:17,749 INFO L895 garLoopResultBuilder]: At program point L604(lines 559 606) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2 (= ~waterLevel~0 1)))) [2023-12-02 14:46:17,749 INFO L895 garLoopResultBuilder]: At program point L571(line 571) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2 (= ~waterLevel~0 1)))) [2023-12-02 14:46:17,749 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 379 403) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2 .cse3))) [2023-12-02 14:46:17,750 INFO L895 garLoopResultBuilder]: At program point L393(line 393) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0)))) (let ((.cse3 (not (= ~waterLevel~0 1))) (.cse5 (and .cse0 (<= 1 ~waterLevel~0))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (= 2 ~waterLevel~0)) .cse1 .cse2) (let ((.cse4 (select |#memory_int| 1))) (or .cse3 (not (= (select |#length| 12) 25)) (not (= (select .cse4 0) 48)) (not (= 9 (select |#length| 11))) (not (= 9 (select |#length| 5))) (not (= 30 (select |#length| 7))) (not (= 31 (select |#length| 2))) (not (= (select |#valid| 12) 1)) (not (= 2 (select |#length| 1))) (not (= 9 (select |#length| 14))) (not (= 1 ~systemActive~0)) (not (= (select |#length| 15) 25)) (not (= (select |#valid| 6) 1)) (not (= (select |#valid| 3) 1)) (not (= ~head~0.offset 0)) (and (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1| 0) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| 1)) (not (= (select |#valid| 11) 1)) (not (= (select |#length| 9) 21)) (not (= 30 (select |#length| 10))) (not (= (select |#valid| 15) 1)) (not (= (select |#length| 6) 21)) (not (= 1 (select |#valid| 5))) (not (= (select |#length| 8) 9)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= ~methaneLevelCritical~0 0)) (not (= (select .cse4 1) 0)) (not (= (select |#valid| 1) 1)) (not (= (select |#valid| 8) 1)) (not (= 30 (select |#length| 13))) (not (= (select |#valid| 4) 1)) (not (= (select |#valid| 7) 1)) (not (= (select |#valid| 10) 1)) (not (= (select |#valid| 14) 1)) (not (= (select |#valid| 13) 1)) .cse5 (< |#StackHeapBarrier| 1) (not (= 30 (select |#length| 4))) (not (= (select |#valid| 2) 1)) .cse2 (not (= (select |#valid| 9) 1)) (not (= ~head~0.base 0)) (not (= ~cleanupTimeShifts~0 4)))) (or .cse3 .cse5 .cse1 .cse2 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0)))))) [2023-12-02 14:46:17,750 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 395) no Hoare annotation was computed. [2023-12-02 14:46:17,750 INFO L899 garLoopResultBuilder]: For program point L383(lines 383 400) no Hoare annotation was computed. [2023-12-02 14:46:17,750 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 379 403) no Hoare annotation was computed. [2023-12-02 14:46:17,750 INFO L895 garLoopResultBuilder]: At program point L398(line 398) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (= 2 ~waterLevel~0)) .cse1 .cse2) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2))) [2023-12-02 14:46:17,751 INFO L899 garLoopResultBuilder]: For program point L398-1(lines 379 403) no Hoare annotation was computed. [2023-12-02 14:46:17,751 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 252 263) no Hoare annotation was computed. [2023-12-02 14:46:17,751 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 252 263) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (= ~waterLevel~0 1) (not (= ~methAndRunningLastTime~0 0))) (or (= 2 ~waterLevel~0) (not (= ~pumpRunning~0 1)) (not (= |old(~waterLevel~0)| 2)) .cse0))) [2023-12-02 14:46:17,753 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:46:17,755 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:46:17,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:46:17 BoogieIcfgContainer [2023-12-02 14:46:17,767 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:46:17,768 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:46:17,768 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:46:17,768 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:46:17,769 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:26" (3/4) ... [2023-12-02 14:46:17,770 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 14:46:17,773 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 14:46:17,773 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 14:46:17,773 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-12-02 14:46:17,774 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 14:46:17,774 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 14:46:17,774 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 14:46:17,774 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 14:46:17,781 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2023-12-02 14:46:17,782 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-12-02 14:46:17,783 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 14:46:17,783 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 14:46:17,784 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 14:46:17,812 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) || (0 == systemActive)) && ((((!((\old(pumpRunning) == 0)) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel == 1))) || !((\old(methAndRunningLastTime) == 0))) || !((\old(waterLevel) == 1))) || (0 == systemActive))) && (((!((\old(pumpRunning) == 1)) || !((\old(waterLevel) == 2))) || (0 == systemActive)) || ((2 == waterLevel) && (pumpRunning == 1)))) [2023-12-02 14:46:17,844 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) || (0 == systemActive)) && ((((!((\old(pumpRunning) == 0)) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel == 1))) || !((\old(methAndRunningLastTime) == 0))) || !((\old(waterLevel) == 1))) || (0 == systemActive))) && (((!((\old(pumpRunning) == 1)) || !((\old(waterLevel) == 2))) || (0 == systemActive)) || ((2 == waterLevel) && (pumpRunning == 1)))) [2023-12-02 14:46:17,891 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 14:46:17,892 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 14:46:17,892 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:46:17,893 INFO L158 Benchmark]: Toolchain (without parser) took 52270.53ms. Allocated memory was 165.7MB in the beginning and 629.1MB in the end (delta: 463.5MB). Free memory was 127.1MB in the beginning and 575.3MB in the end (delta: -448.2MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2023-12-02 14:46:17,893 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:46:17,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.66ms. Allocated memory is still 165.7MB. Free memory was 127.1MB in the beginning and 107.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 14:46:17,894 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.74ms. Allocated memory is still 165.7MB. Free memory was 107.2MB in the beginning and 105.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:46:17,894 INFO L158 Benchmark]: Boogie Preprocessor took 29.80ms. Allocated memory is still 165.7MB. Free memory was 105.1MB in the beginning and 103.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:46:17,894 INFO L158 Benchmark]: RCFGBuilder took 495.32ms. Allocated memory is still 165.7MB. Free memory was 103.5MB in the beginning and 130.9MB in the end (delta: -27.4MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-12-02 14:46:17,895 INFO L158 Benchmark]: TraceAbstraction took 51166.94ms. Allocated memory was 165.7MB in the beginning and 629.1MB in the end (delta: 463.5MB). Free memory was 129.9MB in the beginning and 582.6MB in the end (delta: -452.7MB). Peak memory consumption was 382.0MB. Max. memory is 16.1GB. [2023-12-02 14:46:17,895 INFO L158 Benchmark]: Witness Printer took 123.98ms. Allocated memory is still 629.1MB. Free memory was 582.6MB in the beginning and 575.3MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 14:46:17,897 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.66ms. Allocated memory is still 165.7MB. Free memory was 127.1MB in the beginning and 107.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.74ms. Allocated memory is still 165.7MB. Free memory was 107.2MB in the beginning and 105.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.80ms. Allocated memory is still 165.7MB. Free memory was 105.1MB in the beginning and 103.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 495.32ms. Allocated memory is still 165.7MB. Free memory was 103.5MB in the beginning and 130.9MB in the end (delta: -27.4MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * TraceAbstraction took 51166.94ms. Allocated memory was 165.7MB in the beginning and 629.1MB in the end (delta: 463.5MB). Free memory was 129.9MB in the beginning and 582.6MB in the end (delta: -452.7MB). Peak memory consumption was 382.0MB. Max. memory is 16.1GB. * Witness Printer took 123.98ms. Allocated memory is still 629.1MB. Free memory was 582.6MB in the beginning and 575.3MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] - GenericResultAtLocation [Line: 87]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [87] - GenericResultAtLocation [Line: 190]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [190] - GenericResultAtLocation [Line: 232]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [232] - GenericResultAtLocation [Line: 340]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [340] - GenericResultAtLocation [Line: 548]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [548] - GenericResultAtLocation [Line: 615]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [615] - GenericResultAtLocation [Line: 981]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [981] * 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: 986]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 51.1s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1546 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1528 mSDsluCounter, 2281 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1727 mSDsCounter, 787 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3874 IncrementalHoareTripleChecker+Invalid, 4661 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 787 mSolverCounterUnsat, 554 mSDtfsCounter, 3874 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 993 GetRequests, 697 SyntacticMatches, 26 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7464 ImplicationChecksByTransitivity, 22.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=381occurred in iteration=10, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 168 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 490 PreInvPairs, 530 NumberOfFragments, 1212 HoareAnnotationTreeSize, 490 FomulaSimplifications, 12880 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 20 FomulaSimplificationsInter, 29143 FormulaSimplificationTreeSizeReductionInter, 5.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 844 NumberOfCodeBlocks, 844 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1056 ConstructedInterpolants, 0 QuantifiedInterpolants, 3429 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1430 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 497/628 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: 6.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 41, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 51, TOOLS_POST_TIME: 2.9s, TOOLS_POST_CALL_APPLICATIONS: 22, TOOLS_POST_CALL_TIME: 1.8s, TOOLS_POST_RETURN_APPLICATIONS: 18, TOOLS_POST_RETURN_TIME: 1.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 91, TOOLS_QUANTIFIERELIM_TIME: 6.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 119, FLUID_YES_ANSWERS: 2, DOMAIN_JOIN_APPLICATIONS: 17, DOMAIN_JOIN_TIME: 0.6s, DOMAIN_ALPHA_APPLICATIONS: 2, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 41, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 2.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 18, CALL_SUMMARIZER_CACHE_MISSES: 5, 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: 527, DAG_COMPRESSION_RETAINED_NODES: 123, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 559]: Loop Invariant Derived loop invariant: ((((((2 == waterLevel) && (tmp == 1)) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1)) || ((((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (tmp == 1)) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) - InvariantResult [Line: 558]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 347]: Loop Invariant Derived loop invariant: ((((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) || (0 == systemActive)) && ((((!((\old(pumpRunning) == 0)) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel == 1))) || !((\old(methAndRunningLastTime) == 0))) || !((\old(waterLevel) == 1))) || (0 == systemActive))) && (((!((\old(pumpRunning) == 1)) || !((\old(waterLevel) == 2))) || (0 == systemActive)) || ((2 == waterLevel) && (pumpRunning == 1)))) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-02 14:46:17,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3245ccb-973a-4279-87e0-b690d2b4dc0e/bin/utaipan-verify-nQ1chXbOIh/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