./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product57.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_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/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_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/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_f87cfbad-d645-4e52-8ee9-29fecab719a4/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 3cfb2febd3006e73b0e8309478193e665e2e7ddd381dfad7d5652117e74962c4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:39:59,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:39:59,223 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:39:59,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:39:59,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:39:59,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:39:59,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:39:59,261 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:39:59,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:39:59,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:39:59,263 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:39:59,263 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:39:59,264 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:39:59,264 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:39:59,264 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:39:59,265 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:39:59,265 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:39:59,266 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:39:59,266 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:39:59,267 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:39:59,267 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:39:59,268 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:39:59,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:39:59,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:39:59,270 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:39:59,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:39:59,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:39:59,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:39:59,271 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:39:59,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:39:59,272 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:39:59,273 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:39:59,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:39:59,273 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:39:59,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:39:59,274 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:39:59,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:39:59,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:39:59,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:39:59,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:39:59,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:39:59,275 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:39:59,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:39:59,275 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:39:59,276 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:39:59,276 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:39:59,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:39:59,276 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_f87cfbad-d645-4e52-8ee9-29fecab719a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cfb2febd3006e73b0e8309478193e665e2e7ddd381dfad7d5652117e74962c4 [2023-12-02 19:39:59,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:39:59,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:39:59,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:39:59,533 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:39:59,534 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:39:59,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c [2023-12-02 19:40:02,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:40:02,430 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:40:02,430 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c [2023-12-02 19:40:02,441 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/data/6e78eb047/94650dc992e94ecc9bcf9f913f4b00e3/FLAGc75ef7c00 [2023-12-02 19:40:02,452 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/data/6e78eb047/94650dc992e94ecc9bcf9f913f4b00e3 [2023-12-02 19:40:02,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:40:02,455 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:40:02,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:40:02,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:40:02,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:40:02,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2deaf94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02, skipping insertion in model container [2023-12-02 19:40:02,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,509 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:40:02,713 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_f87cfbad-d645-4e52-8ee9-29fecab719a4/sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c[13989,14002] [2023-12-02 19:40:02,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:40:02,748 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:40:02,755 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2023-12-02 19:40:02,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [415] [2023-12-02 19:40:02,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [526] [2023-12-02 19:40:02,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [564] [2023-12-02 19:40:02,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [600] [2023-12-02 19:40:02,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [609] [2023-12-02 19:40:02,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [828] [2023-12-02 19:40:02,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [894] [2023-12-02 19:40:02,804 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_f87cfbad-d645-4e52-8ee9-29fecab719a4/sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c[13989,14002] [2023-12-02 19:40:02,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:40:02,834 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:40:02,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02 WrapperNode [2023-12-02 19:40:02,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:40:02,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:40:02,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:40:02,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:40:02,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,883 INFO L138 Inliner]: procedures = 56, calls = 101, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 227 [2023-12-02 19:40:02,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:40:02,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:40:02,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:40:02,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:40:02,893 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:40:02,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:40:02,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:40:02,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:40:02,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (1/1) ... [2023-12-02 19:40:02,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:40:02,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:40:02,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:40:02,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:40:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:40:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 19:40:02,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 19:40:02,987 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 19:40:02,987 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 19:40:02,987 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 19:40:02,987 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 19:40:02,987 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-12-02 19:40:02,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-12-02 19:40:02,987 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 19:40:02,988 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 19:40:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 19:40:02,988 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 19:40:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:40:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 19:40:02,988 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 19:40:02,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:40:02,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:40:03,070 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:40:03,072 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:40:03,329 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:40:03,424 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:40:03,425 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 19:40:03,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:40:03 BoogieIcfgContainer [2023-12-02 19:40:03,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:40:03,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:40:03,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:40:03,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:40:03,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:40:02" (1/3) ... [2023-12-02 19:40:03,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebdec51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:40:03, skipping insertion in model container [2023-12-02 19:40:03,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:40:02" (2/3) ... [2023-12-02 19:40:03,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebdec51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:40:03, skipping insertion in model container [2023-12-02 19:40:03,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:40:03" (3/3) ... [2023-12-02 19:40:03,435 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product57.cil.c [2023-12-02 19:40:03,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:40:03,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:40:03,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:40:03,494 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;@a0589f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:40:03,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:40:03,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 19:40:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 19:40:03,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:03,504 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 19:40:03,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:03,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1524132150, now seen corresponding path program 1 times [2023-12-02 19:40:03,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:03,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583559292] [2023-12-02 19:40:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:03,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:03,672 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 19:40:03,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:03,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583559292] [2023-12-02 19:40:03,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583559292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:03,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:03,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:40:03,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185090009] [2023-12-02 19:40:03,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:03,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 19:40:03,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:03,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 19:40:03,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:40:03,708 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) 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 19:40:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:03,767 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2023-12-02 19:40:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 19:40:03,770 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 19:40:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:03,779 INFO L225 Difference]: With dead ends: 114 [2023-12-02 19:40:03,779 INFO L226 Difference]: Without dead ends: 53 [2023-12-02 19:40:03,783 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 19:40:03,786 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:03,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:40:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-02 19:40:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-02 19:40:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 19:40:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2023-12-02 19:40:03,829 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 17 [2023-12-02 19:40:03,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:03,829 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2023-12-02 19:40:03,830 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 19:40:03,830 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2023-12-02 19:40:03,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 19:40:03,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:03,832 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 19:40:03,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:40:03,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:03,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:03,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1522009959, now seen corresponding path program 1 times [2023-12-02 19:40:03,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:03,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121679225] [2023-12-02 19:40:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:03,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:03,924 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 19:40:03,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:03,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121679225] [2023-12-02 19:40:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121679225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:03,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:03,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969704638] [2023-12-02 19:40:03,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:03,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:03,928 INFO L87 Difference]: Start difference. First operand 53 states and 68 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 19:40:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:03,969 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2023-12-02 19:40:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:40:03,969 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 19:40:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:03,971 INFO L225 Difference]: With dead ends: 83 [2023-12-02 19:40:03,971 INFO L226 Difference]: Without dead ends: 45 [2023-12-02 19:40:03,972 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 19:40:03,974 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:03,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 75 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:40:03,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-02 19:40:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-02 19:40:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 19:40:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2023-12-02 19:40:03,984 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 18 [2023-12-02 19:40:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:03,984 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2023-12-02 19:40:03,984 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 19:40:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2023-12-02 19:40:03,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 19:40:03,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:03,986 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 19:40:03,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:40:03,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:03,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:03,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1008959308, now seen corresponding path program 1 times [2023-12-02 19:40:03,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:03,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489537801] [2023-12-02 19:40:03,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:04,099 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 19:40:04,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:04,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489537801] [2023-12-02 19:40:04,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489537801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:04,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:04,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:40:04,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913670441] [2023-12-02 19:40:04,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:04,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:40:04,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:04,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:40:04,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:40:04,102 INFO L87 Difference]: Start difference. First operand 45 states and 57 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 19:40:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:04,189 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2023-12-02 19:40:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:40:04,190 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 19:40:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:04,191 INFO L225 Difference]: With dead ends: 88 [2023-12-02 19:40:04,191 INFO L226 Difference]: Without dead ends: 45 [2023-12-02 19:40:04,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:40:04,193 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 53 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:04,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 53 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:40:04,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-02 19:40:04,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-02 19:40:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 36 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 19:40:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2023-12-02 19:40:04,203 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 20 [2023-12-02 19:40:04,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:04,204 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2023-12-02 19:40:04,204 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 19:40:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2023-12-02 19:40:04,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 19:40:04,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:04,205 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 19:40:04,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:40:04,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:04,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2042166363, now seen corresponding path program 1 times [2023-12-02 19:40:04,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:04,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129707888] [2023-12-02 19:40:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:04,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:04,283 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 19:40:04,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:04,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129707888] [2023-12-02 19:40:04,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129707888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:04,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:04,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:04,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318905899] [2023-12-02 19:40:04,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:04,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:04,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:04,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:04,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:04,286 INFO L87 Difference]: Start difference. First operand 45 states and 56 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 19:40:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:04,378 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2023-12-02 19:40:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:40:04,379 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 19:40:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:04,382 INFO L225 Difference]: With dead ends: 123 [2023-12-02 19:40:04,383 INFO L226 Difference]: Without dead ends: 80 [2023-12-02 19:40:04,383 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 19:40:04,385 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 38 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:04,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 81 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:40:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-02 19:40:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2023-12-02 19:40:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 59 states have internal predecessors, (66), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2023-12-02 19:40:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2023-12-02 19:40:04,403 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 23 [2023-12-02 19:40:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:04,403 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2023-12-02 19:40:04,403 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 19:40:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2023-12-02 19:40:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 19:40:04,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:04,405 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, 1, 1, 1] [2023-12-02 19:40:04,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:40:04,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:04,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash 661089774, now seen corresponding path program 1 times [2023-12-02 19:40:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:04,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127822539] [2023-12-02 19:40:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:04,556 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 19:40:04,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:04,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127822539] [2023-12-02 19:40:04,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127822539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:04,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:04,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:04,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424919901] [2023-12-02 19:40:04,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:04,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:04,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:04,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:04,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:04,559 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:40:04,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:04,677 INFO L93 Difference]: Finished difference Result 217 states and 269 transitions. [2023-12-02 19:40:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:04,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-12-02 19:40:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:04,681 INFO L225 Difference]: With dead ends: 217 [2023-12-02 19:40:04,681 INFO L226 Difference]: Without dead ends: 141 [2023-12-02 19:40:04,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:40:04,683 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 54 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:04,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 162 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:40:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-02 19:40:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 124. [2023-12-02 19:40:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 83 states have (on average 1.2289156626506024) internal successors, (102), 92 states have internal predecessors, (102), 20 states have call successors, (20), 18 states have call predecessors, (20), 20 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2023-12-02 19:40:04,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2023-12-02 19:40:04,706 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 31 [2023-12-02 19:40:04,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:04,707 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2023-12-02 19:40:04,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:40:04,707 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2023-12-02 19:40:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 19:40:04,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:04,709 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, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:04,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:40:04,709 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:04,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:04,710 INFO L85 PathProgramCache]: Analyzing trace with hash 915107265, now seen corresponding path program 1 times [2023-12-02 19:40:04,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:04,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144399094] [2023-12-02 19:40:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:04,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:05,012 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 19:40:05,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:05,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144399094] [2023-12-02 19:40:05,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144399094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:05,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:05,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 19:40:05,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029928326] [2023-12-02 19:40:05,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:05,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:40:05,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:40:05,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:40:05,015 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:40:05,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:05,525 INFO L93 Difference]: Finished difference Result 371 states and 471 transitions. [2023-12-02 19:40:05,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 19:40:05,526 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2023-12-02 19:40:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:05,530 INFO L225 Difference]: With dead ends: 371 [2023-12-02 19:40:05,530 INFO L226 Difference]: Without dead ends: 295 [2023-12-02 19:40:05,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-12-02 19:40:05,532 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 325 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:05,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 193 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:40:05,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-12-02 19:40:05,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 269. [2023-12-02 19:40:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 184 states have (on average 1.2717391304347827) internal successors, (234), 202 states have internal predecessors, (234), 44 states have call successors, (44), 36 states have call predecessors, (44), 40 states have return successors, (61), 43 states have call predecessors, (61), 44 states have call successors, (61) [2023-12-02 19:40:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 339 transitions. [2023-12-02 19:40:05,579 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 339 transitions. Word has length 34 [2023-12-02 19:40:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:05,580 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 339 transitions. [2023-12-02 19:40:05,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 19:40:05,580 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 339 transitions. [2023-12-02 19:40:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 19:40:05,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:05,582 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:05,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:40:05,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:05,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:05,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1085451081, now seen corresponding path program 1 times [2023-12-02 19:40:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:05,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472612639] [2023-12-02 19:40:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:05,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:40:05,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472612639] [2023-12-02 19:40:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472612639] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:40:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510025907] [2023-12-02 19:40:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:05,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:05,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:40:05,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:40:05,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:40:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:05,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 19:40:05,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:40:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:40:06,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:40:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:40:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510025907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:40:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [284507796] [2023-12-02 19:40:06,482 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 19:40:06,482 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:40:06,486 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:40:06,489 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:40:06,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:40:07,158 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 120 for LOIs [2023-12-02 19:40:07,200 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 135 for LOIs [2023-12-02 19:40:10,654 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 132 for LOIs [2023-12-02 19:40:11,216 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 169 for LOIs [2023-12-02 19:40:11,537 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:40:23,412 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2500#(and (<= 1 |#StackHeapBarrier|) (= ~pumpRunning~0 0) (= 2 ~waterLevel~0) (= ~methaneLevelCritical~0 0) (= |timeShift_isPumpRunning_#res#1| 0) (= 2 |timeShift_getWaterLevel_#res#1|) (= ~head~0.offset 0) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (or (and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= (select |#valid| 9) 1) (= (select |#length| 12) 25) (= (select |#valid| 11) 1) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (exists ((|v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_3| Int)) (and (<= |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_3| 2147483647) (not (= |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_3| 0)) (<= 0 (+ |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_3| 2147483648)))) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (exists ((|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_1| Int)) (and (or (not (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_1| 0)) (and (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_1| 2147483648)) (<= |v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_1| 2147483647))) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_1| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_1|)))) (= (select |#valid| 2) 1) (= 9 (select |#length| 11)) (exists ((|v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_2| Int)) (and (<= |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_2| 2147483647) (<= 0 (+ |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_2| 2147483648)) (not (= |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_2| 0)))) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= |old(~waterLevel~0)| 2) (= (select |#valid| 13) 1)) (and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= (select |#valid| 9) 1) (exists ((|v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_1| Int)) (and (not (= |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_1| 0)) (<= |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_1| 2147483647) (<= 0 (+ |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_1| 2147483648)))) (= (select |#length| 12) 25) (= (select |#valid| 11) 1) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (exists ((|v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_3| Int)) (and (<= |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_3| 2147483647) (not (= |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_3| 0)) (<= 0 (+ |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_3| 2147483648)))) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (exists ((|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_1| Int)) (and (or (not (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_1| 0)) (and (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_1| 2147483648)) (<= |v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_1| 2147483647))) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_1| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_1|)))) (= (select |#valid| 2) 1) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= |old(~waterLevel~0)| 2) (= (select |#valid| 13) 1))) (= ~head~0.base 0) (= |timeShift___utac_acc__Specification3_spec__1_~tmp~3#1| 0) (= ~cleanupTimeShifts~0 4) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|))' at error location [2023-12-02 19:40:23,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:40:23,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:40:23,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 21 [2023-12-02 19:40:23,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259163284] [2023-12-02 19:40:23,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:40:23,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 19:40:23,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 19:40:23,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1707, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 19:40:23,415 INFO L87 Difference]: Start difference. First operand 269 states and 339 transitions. Second operand has 21 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 19:40:25,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:25,189 INFO L93 Difference]: Finished difference Result 1299 states and 1719 transitions. [2023-12-02 19:40:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-02 19:40:25,190 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 35 [2023-12-02 19:40:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:25,200 INFO L225 Difference]: With dead ends: 1299 [2023-12-02 19:40:25,200 INFO L226 Difference]: Without dead ends: 1083 [2023-12-02 19:40:25,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2979 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=938, Invalid=7434, Unknown=0, NotChecked=0, Total=8372 [2023-12-02 19:40:25,208 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 606 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:25,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 698 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 19:40:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2023-12-02 19:40:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 936. [2023-12-02 19:40:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 656 states have (on average 1.2423780487804879) internal successors, (815), 695 states have internal predecessors, (815), 147 states have call successors, (147), 120 states have call predecessors, (147), 132 states have return successors, (206), 144 states have call predecessors, (206), 147 states have call successors, (206) [2023-12-02 19:40:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1168 transitions. [2023-12-02 19:40:25,315 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1168 transitions. Word has length 35 [2023-12-02 19:40:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:25,316 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1168 transitions. [2023-12-02 19:40:25,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 19:40:25,316 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1168 transitions. [2023-12-02 19:40:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 19:40:25,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:25,318 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:25,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:40:25,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:25,519 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:25,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1760132326, now seen corresponding path program 1 times [2023-12-02 19:40:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:25,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294606634] [2023-12-02 19:40:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:25,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:40:25,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:25,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294606634] [2023-12-02 19:40:25,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294606634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:25,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:25,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 19:40:25,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728943996] [2023-12-02 19:40:25,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:25,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:40:25,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:25,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:40:25,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:40:25,733 INFO L87 Difference]: Start difference. First operand 936 states and 1168 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 19:40:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:26,222 INFO L93 Difference]: Finished difference Result 1756 states and 2242 transitions. [2023-12-02 19:40:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 19:40:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-12-02 19:40:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:26,232 INFO L225 Difference]: With dead ends: 1756 [2023-12-02 19:40:26,232 INFO L226 Difference]: Without dead ends: 1215 [2023-12-02 19:40:26,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-12-02 19:40:26,236 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 265 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:26,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 467 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:40:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-12-02 19:40:26,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1033. [2023-12-02 19:40:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 719 states have (on average 1.2183588317107092) internal successors, (876), 767 states have internal predecessors, (876), 161 states have call successors, (161), 133 states have call predecessors, (161), 152 states have return successors, (242), 156 states have call predecessors, (242), 161 states have call successors, (242) [2023-12-02 19:40:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1279 transitions. [2023-12-02 19:40:26,345 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1279 transitions. Word has length 38 [2023-12-02 19:40:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:26,346 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1279 transitions. [2023-12-02 19:40:26,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 19:40:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1279 transitions. [2023-12-02 19:40:26,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 19:40:26,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:26,350 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 19:40:26,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:40:26,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:26,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:26,351 INFO L85 PathProgramCache]: Analyzing trace with hash -974646141, now seen corresponding path program 1 times [2023-12-02 19:40:26,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:26,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872764903] [2023-12-02 19:40:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:26,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:40:26,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:26,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872764903] [2023-12-02 19:40:26,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872764903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:26,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:26,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 19:40:26,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895103845] [2023-12-02 19:40:26,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:26,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:40:26,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:26,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:40:26,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:40:26,585 INFO L87 Difference]: Start difference. First operand 1033 states and 1279 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:40:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:26,882 INFO L93 Difference]: Finished difference Result 1773 states and 2212 transitions. [2023-12-02 19:40:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:40:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 52 [2023-12-02 19:40:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:26,889 INFO L225 Difference]: With dead ends: 1773 [2023-12-02 19:40:26,889 INFO L226 Difference]: Without dead ends: 1031 [2023-12-02 19:40:26,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-02 19:40:26,892 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 128 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:26,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 120 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:40:26,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-12-02 19:40:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 895. [2023-12-02 19:40:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 623 states have (on average 1.218298555377207) internal successors, (759), 662 states have internal predecessors, (759), 137 states have call successors, (137), 122 states have call predecessors, (137), 134 states have return successors, (196), 133 states have call predecessors, (196), 137 states have call successors, (196) [2023-12-02 19:40:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1092 transitions. [2023-12-02 19:40:26,960 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1092 transitions. Word has length 52 [2023-12-02 19:40:26,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:26,960 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1092 transitions. [2023-12-02 19:40:26,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:40:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1092 transitions. [2023-12-02 19:40:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 19:40:26,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:26,962 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:26,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 19:40:26,962 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:26,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:26,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1346222448, now seen corresponding path program 1 times [2023-12-02 19:40:26,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:26,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606032878] [2023-12-02 19:40:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:26,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:40:27,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:27,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606032878] [2023-12-02 19:40:27,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606032878] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:40:27,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735730657] [2023-12-02 19:40:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:27,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:27,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:40:27,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:40:27,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:40:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:27,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 19:40:27,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:40:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:40:27,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:40:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 19:40:27,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735730657] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:40:27,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [643275580] [2023-12-02 19:40:27,678 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 19:40:27,678 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:40:27,678 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:40:27,678 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:40:27,679 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:40:29,664 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 120 for LOIs [2023-12-02 19:40:29,687 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 148 for LOIs [2023-12-02 19:40:33,146 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 148 for LOIs [2023-12-02 19:40:33,481 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 150 for LOIs [2023-12-02 19:40:33,627 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:40:46,211 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13150#(and (<= 1 |#StackHeapBarrier|) (= ~pumpRunning~0 0) (= 2 ~waterLevel~0) (= ~methaneLevelCritical~0 0) (= |timeShift_isPumpRunning_#res#1| 0) (= 2 |timeShift_getWaterLevel_#res#1|) (= ~head~0.offset 0) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (or (and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= (select |#valid| 9) 1) (exists ((|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_6| Int)) (and (or (not (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_6| 0)) (and (<= |v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_6| 2147483647) (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_6| 2147483648)))) (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_6|)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_6| 2147483647))) (= (select |#length| 12) 25) (exists ((|v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_14| Int)) (and (<= |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_14| 2147483648)) (not (= |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_14| 0)))) (= (select |#valid| 11) 1) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (exists ((|v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_5| Int)) (and (<= |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_5| 2147483647) (<= 0 (+ |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_5| 2147483648)) (not (= |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_5| 0)))) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= |old(~waterLevel~0)| 2) (= (select |#valid| 13) 1)) (and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= (select |#valid| 9) 1) (exists ((|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_6| Int)) (and (or (not (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_6| 0)) (and (<= |v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_6| 2147483647) (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_6| 2147483648)))) (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_6|)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_6| 2147483647))) (= (select |#length| 12) 25) (exists ((|v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_14| Int)) (and (<= |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_14| 2147483648)) (not (= |v_ULTIMATE.start_test_~tmp~9#1_BEFORE_CALL_14| 0)))) (= (select |#valid| 11) 1) (exists ((|v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_6| Int)) (and (<= |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_6| 2147483647) (<= 0 (+ |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_6| 2147483648)) (not (= |v_processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#res#1_BEFORE_RETURN_6| 0)))) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= |old(~waterLevel~0)| 2) (= (select |#valid| 13) 1))) (= ~head~0.base 0) (= |timeShift___utac_acc__Specification3_spec__1_~tmp~3#1| 0) (= ~cleanupTimeShifts~0 4) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|))' at error location [2023-12-02 19:40:46,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:40:46,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:40:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2023-12-02 19:40:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010330820] [2023-12-02 19:40:46,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:40:46,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 19:40:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:46,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 19:40:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1652, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 19:40:46,213 INFO L87 Difference]: Start difference. First operand 895 states and 1092 transitions. Second operand has 20 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 8 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-02 19:40:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:50,023 INFO L93 Difference]: Finished difference Result 4564 states and 6047 transitions. [2023-12-02 19:40:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-12-02 19:40:50,024 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 8 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) Word has length 55 [2023-12-02 19:40:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:50,052 INFO L225 Difference]: With dead ends: 4564 [2023-12-02 19:40:50,052 INFO L226 Difference]: Without dead ends: 3671 [2023-12-02 19:40:50,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 152 SyntacticMatches, 10 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7346 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=2055, Invalid=17685, Unknown=0, NotChecked=0, Total=19740 [2023-12-02 19:40:50,067 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 793 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:50,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 829 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:40:50,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2023-12-02 19:40:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3182. [2023-12-02 19:40:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 2200 states have (on average 1.1663636363636363) internal successors, (2566), 2291 states have internal predecessors, (2566), 488 states have call successors, (488), 444 states have call predecessors, (488), 493 states have return successors, (795), 486 states have call predecessors, (795), 488 states have call successors, (795) [2023-12-02 19:40:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 3849 transitions. [2023-12-02 19:40:50,386 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 3849 transitions. Word has length 55 [2023-12-02 19:40:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:50,386 INFO L495 AbstractCegarLoop]: Abstraction has 3182 states and 3849 transitions. [2023-12-02 19:40:50,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 8 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-02 19:40:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 3849 transitions. [2023-12-02 19:40:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 19:40:50,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:50,390 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:40:50,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:40:50,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 19:40:50,592 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:50,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:50,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1207948965, now seen corresponding path program 1 times [2023-12-02 19:40:50,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:50,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748429072] [2023-12-02 19:40:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:50,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:40:50,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:50,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748429072] [2023-12-02 19:40:50,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748429072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:40:50,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081777024] [2023-12-02 19:40:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:50,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:50,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:40:50,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:40:50,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:40:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:51,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:40:51,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:40:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 19:40:51,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:40:51,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081777024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:51,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:40:51,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-12-02 19:40:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95846129] [2023-12-02 19:40:51,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 19:40:51,102 INFO L87 Difference]: Start difference. First operand 3182 states and 3849 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 19:40:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:51,389 INFO L93 Difference]: Finished difference Result 6000 states and 7306 transitions. [2023-12-02 19:40:51,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:51,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2023-12-02 19:40:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:51,392 INFO L225 Difference]: With dead ends: 6000 [2023-12-02 19:40:51,392 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 19:40:51,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-02 19:40:51,405 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 43 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:51,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 140 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:40:51,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 19:40:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 19:40:51,406 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 19:40:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 19:40:51,406 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2023-12-02 19:40:51,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:51,407 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 19:40:51,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 19:40:51,407 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 19:40:51,407 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 19:40:51,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:40:51,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:40:51,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:51,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 19:41:03,244 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 641 647) no Hoare annotation was computed. [2023-12-02 19:41:03,244 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 641 647) the Hoare annotation is: true [2023-12-02 19:41:03,245 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 450 461) the Hoare annotation is: (let ((.cse1 (= ~methaneLevelCritical~0 0)) (.cse4 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse0 (not .cse4)) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (= 2 ~waterLevel~0))) (.cse5 (not .cse1)) (.cse6 (= 0 ~systemActive~0))) (and (or (< 2 ~waterLevel~0) .cse0 (not (= ~pumpRunning~0 0)) .cse1 .cse2) (or .cse0 .cse1 .cse2 .cse3 (not (= ~pumpRunning~0 1))) (or .cse4 (< 1 ~waterLevel~0) .cse5 .cse6) (or .cse3 .cse4 .cse5 .cse6)))) [2023-12-02 19:41:03,245 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 450 461) no Hoare annotation was computed. [2023-12-02 19:41:03,245 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 896 925) no Hoare annotation was computed. [2023-12-02 19:41:03,245 INFO L899 garLoopResultBuilder]: For program point L921(lines 896 925) no Hoare annotation was computed. [2023-12-02 19:41:03,245 INFO L899 garLoopResultBuilder]: For program point L917(line 917) no Hoare annotation was computed. [2023-12-02 19:41:03,245 INFO L899 garLoopResultBuilder]: For program point L910(lines 910 914) no Hoare annotation was computed. [2023-12-02 19:41:03,245 INFO L902 garLoopResultBuilder]: At program point L910-1(lines 910 914) the Hoare annotation is: true [2023-12-02 19:41:03,245 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 896 925) the Hoare annotation is: true [2023-12-02 19:41:03,245 INFO L902 garLoopResultBuilder]: At program point L906-2(lines 906 920) the Hoare annotation is: true [2023-12-02 19:41:03,245 INFO L902 garLoopResultBuilder]: At program point L902(line 902) the Hoare annotation is: true [2023-12-02 19:41:03,245 INFO L899 garLoopResultBuilder]: For program point L902-1(line 902) no Hoare annotation was computed. [2023-12-02 19:41:03,245 INFO L899 garLoopResultBuilder]: For program point L576(lines 576 596) no Hoare annotation was computed. [2023-12-02 19:41:03,246 INFO L899 garLoopResultBuilder]: For program point L605(line 605) no Hoare annotation was computed. [2023-12-02 19:41:03,246 INFO L895 garLoopResultBuilder]: At program point L689(line 689) the Hoare annotation is: (let ((.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (= 0 ~systemActive~0)) (.cse1 (< 2 |old(~waterLevel~0)|))) (and (or (and (not (= ~pumpRunning~0 0)) (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0)))) .cse0 .cse1) (or .cse2 (not (= |old(~waterLevel~0)| 2)) .cse0) (or (< 1 |old(~waterLevel~0)|) .cse2 .cse0) (or (not (= |old(~pumpRunning~0)| 1)) .cse0 .cse1 (= ~pumpRunning~0 1)))) [2023-12-02 19:41:03,246 INFO L899 garLoopResultBuilder]: For program point L586(lines 586 592) no Hoare annotation was computed. [2023-12-02 19:41:03,246 INFO L899 garLoopResultBuilder]: For program point L582(lines 582 595) no Hoare annotation was computed. [2023-12-02 19:41:03,246 INFO L899 garLoopResultBuilder]: For program point L582-1(lines 567 599) no Hoare annotation was computed. [2023-12-02 19:41:03,246 INFO L895 garLoopResultBuilder]: At program point L574(line 574) the Hoare annotation is: (let ((.cse8 (= ~pumpRunning~0 1)) (.cse0 (= |old(~pumpRunning~0)| 0))) (let ((.cse7 (not (= |old(~pumpRunning~0)| 1))) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse5 (< 1 |old(~waterLevel~0)|)) (.cse2 (not .cse0)) (.cse6 (= ~pumpRunning~0 0)) (.cse1 (= 0 ~systemActive~0)) (.cse9 (= ~waterLevel~0 1)) (.cse3 (or (not (= ~methaneLevelCritical~0 0)) .cse8))) (and (or (<= ~waterLevel~0 1) .cse0 .cse1 (< 2 |old(~waterLevel~0)|)) (or .cse2 (and (= 2 ~waterLevel~0) .cse3) .cse4 .cse1) (or .cse5 .cse6 .cse7 .cse1 .cse8) (or .cse0 .cse4 .cse1 .cse9) (or .cse6 .cse7 .cse4 .cse1 .cse8) (let ((.cse10 (= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse5 .cse2 (and .cse6 .cse10) .cse1 (and (not .cse9) .cse3 .cse10)))))) [2023-12-02 19:41:03,246 INFO L899 garLoopResultBuilder]: For program point L574-1(line 574) no Hoare annotation was computed. [2023-12-02 19:41:03,246 INFO L895 garLoopResultBuilder]: At program point L694(line 694) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (< 2 |old(~waterLevel~0)|))) (and (or (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse0 .cse1) (or (= |old(~pumpRunning~0)| 0) .cse0 .cse1))) [2023-12-02 19:41:03,246 INFO L899 garLoopResultBuilder]: For program point L694-1(lines 675 699) no Hoare annotation was computed. [2023-12-02 19:41:03,246 INFO L899 garLoopResultBuilder]: For program point L628-1(lines 628 634) no Hoare annotation was computed. [2023-12-02 19:41:03,247 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 617 640) the Hoare annotation is: (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)) (= 0 ~systemActive~0) (< 2 |old(~waterLevel~0)|)) [2023-12-02 19:41:03,247 INFO L899 garLoopResultBuilder]: For program point L621-1(lines 620 639) no Hoare annotation was computed. [2023-12-02 19:41:03,247 INFO L899 garLoopResultBuilder]: For program point L683(lines 683 691) no Hoare annotation was computed. [2023-12-02 19:41:03,247 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 617 640) no Hoare annotation was computed. [2023-12-02 19:41:03,247 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 605) no Hoare annotation was computed. [2023-12-02 19:41:03,247 INFO L899 garLoopResultBuilder]: For program point L679(lines 679 696) no Hoare annotation was computed. [2023-12-02 19:41:03,247 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 462 470) the Hoare annotation is: true [2023-12-02 19:41:03,247 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 462 470) no Hoare annotation was computed. [2023-12-02 19:41:03,247 INFO L895 garLoopResultBuilder]: At program point L886(lines 839 887) the Hoare annotation is: false [2023-12-02 19:41:03,247 INFO L899 garLoopResultBuilder]: For program point L977(lines 977 984) no Hoare annotation was computed. [2023-12-02 19:41:03,247 INFO L899 garLoopResultBuilder]: For program point L977-2(lines 977 984) no Hoare annotation was computed. [2023-12-02 19:41:03,247 INFO L899 garLoopResultBuilder]: For program point L841(lines 840 885) no Hoare annotation was computed. [2023-12-02 19:41:03,248 INFO L895 garLoopResultBuilder]: At program point L862(line 862) the Hoare annotation is: (and (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= ~waterLevel~0 2) (= |ULTIMATE.start_main_~tmp~10#1| 1)) [2023-12-02 19:41:03,248 INFO L895 garLoopResultBuilder]: At program point L883(lines 840 885) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~10#1| 1))) (or (and (= 2 ~waterLevel~0) (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) .cse0 .cse1 .cse2) (and (<= ~waterLevel~0 1) .cse0 .cse1 .cse2))) [2023-12-02 19:41:03,248 INFO L899 garLoopResultBuilder]: For program point L850(lines 850 856) no Hoare annotation was computed. [2023-12-02 19:41:03,248 INFO L899 garLoopResultBuilder]: For program point L850-1(lines 850 856) no Hoare annotation was computed. [2023-12-02 19:41:03,248 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 19:41:03,248 INFO L895 garLoopResultBuilder]: At program point L876-2(lines 870 881) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~10#1| 1))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2) (and (<= ~waterLevel~0 1) .cse0 .cse1 .cse2))) [2023-12-02 19:41:03,248 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 19:41:03,248 INFO L899 garLoopResultBuilder]: For program point L860(lines 860 866) no Hoare annotation was computed. [2023-12-02 19:41:03,248 INFO L899 garLoopResultBuilder]: For program point L860-1(lines 860 866) no Hoare annotation was computed. [2023-12-02 19:41:03,248 INFO L899 garLoopResultBuilder]: For program point L889(lines 830 893) no Hoare annotation was computed. [2023-12-02 19:41:03,248 INFO L895 garLoopResultBuilder]: At program point L852(line 852) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~10#1| 1))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 (<= ~waterLevel~0 2) .cse2) (and (= 2 ~waterLevel~0) (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) .cse0 .cse1 .cse2) (and (<= ~waterLevel~0 1) .cse0 .cse1 .cse2))) [2023-12-02 19:41:03,248 INFO L895 garLoopResultBuilder]: At program point L663(line 663) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse2 (= 0 ~systemActive~0))) (and (or (< 2 ~waterLevel~0) (not .cse0) (let ((.cse1 (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 0))) (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) (or .cse1 (< 0 |processEnvironment__wrappee__highWaterSensor_~tmp~4#1|)) (or (not (= ~waterLevel~0 1)) .cse1))) .cse2) (or (< 1 ~waterLevel~0) .cse0 .cse2))) [2023-12-02 19:41:03,248 INFO L899 garLoopResultBuilder]: For program point L657(lines 657 665) no Hoare annotation was computed. [2023-12-02 19:41:03,249 INFO L899 garLoopResultBuilder]: For program point L653(lines 653 670) no Hoare annotation was computed. [2023-12-02 19:41:03,249 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 649 673) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (= 2 ~waterLevel~0)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (< 1 ~waterLevel~0) .cse0))) [2023-12-02 19:41:03,249 INFO L895 garLoopResultBuilder]: At program point L668(line 668) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (< 2 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 0)) .cse0) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (< 1 ~waterLevel~0) .cse0))) [2023-12-02 19:41:03,249 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 649 673) no Hoare annotation was computed. [2023-12-02 19:41:03,249 INFO L899 garLoopResultBuilder]: For program point L668-1(lines 649 673) no Hoare annotation was computed. [2023-12-02 19:41:03,249 INFO L895 garLoopResultBuilder]: At program point L739(line 739) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse2 (= 0 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0))) (and (or (and .cse0 .cse1 (or (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 0) (< 0 |processEnvironment__wrappee__highWaterSensor_~tmp~4#1|))) (< 1 ~waterLevel~0) .cse2) (or (not (= ~waterLevel~0 1)) .cse2) (or (not .cse1) (not (= 2 ~waterLevel~0)) .cse2 (and .cse0 (= |processEnvironment__wrappee__highWaterSensor_~tmp~4#1| 1))))) [2023-12-02 19:41:03,249 INFO L899 garLoopResultBuilder]: For program point L739-1(line 739) no Hoare annotation was computed. [2023-12-02 19:41:03,249 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 438 449) no Hoare annotation was computed. [2023-12-02 19:41:03,249 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 438 449) the Hoare annotation is: (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= 0 ~systemActive~0))) (and (or (= 2 ~waterLevel~0) (and (= ~methaneLevelCritical~0 0) (not (= ~pumpRunning~0 1))) (not (= |old(~waterLevel~0)| 2)) .cse0) (or (< 1 |old(~waterLevel~0)|) .cse1 .cse0) (or (not (= ~pumpRunning~0 0)) .cse1 .cse0 (< 2 |old(~waterLevel~0)|)))) [2023-12-02 19:41:03,251 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:41:03,252 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:41:03,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:41:03 BoogieIcfgContainer [2023-12-02 19:41:03,261 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:41:03,262 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:41:03,262 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:41:03,262 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:41:03,262 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:40:03" (3/4) ... [2023-12-02 19:41:03,264 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 19:41:03,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 19:41:03,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 19:41:03,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 19:41:03,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 19:41:03,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-12-02 19:41:03,267 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 19:41:03,267 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 19:41:03,275 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2023-12-02 19:41:03,275 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-12-02 19:41:03,276 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 19:41:03,277 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:41:03,278 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:41:03,299 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) || (0 == systemActive)) || (2 < \old(waterLevel))) [2023-12-02 19:41:03,331 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) || (0 == systemActive)) || (2 < \old(waterLevel))) [2023-12-02 19:41:03,370 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:41:03,370 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 19:41:03,371 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:41:03,371 INFO L158 Benchmark]: Toolchain (without parser) took 60915.85ms. Allocated memory was 159.4MB in the beginning and 874.5MB in the end (delta: 715.1MB). Free memory was 125.4MB in the beginning and 401.6MB in the end (delta: -276.2MB). Peak memory consumption was 438.1MB. Max. memory is 16.1GB. [2023-12-02 19:41:03,371 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:41:03,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.97ms. Allocated memory is still 159.4MB. Free memory was 125.4MB in the beginning and 105.8MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 19:41:03,372 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.57ms. Allocated memory is still 159.4MB. Free memory was 105.8MB in the beginning and 103.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:41:03,372 INFO L158 Benchmark]: Boogie Preprocessor took 30.27ms. Allocated memory is still 159.4MB. Free memory was 103.8MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:41:03,372 INFO L158 Benchmark]: RCFGBuilder took 511.28ms. Allocated memory is still 159.4MB. Free memory was 101.6MB in the beginning and 108.6MB in the end (delta: -7.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 19:41:03,373 INFO L158 Benchmark]: TraceAbstraction took 59832.49ms. Allocated memory was 159.4MB in the beginning and 874.5MB in the end (delta: 715.1MB). Free memory was 107.6MB in the beginning and 408.9MB in the end (delta: -301.4MB). Peak memory consumption was 521.8MB. Max. memory is 16.1GB. [2023-12-02 19:41:03,373 INFO L158 Benchmark]: Witness Printer took 108.70ms. Allocated memory is still 874.5MB. Free memory was 408.9MB in the beginning and 401.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 19:41:03,375 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.97ms. Allocated memory is still 159.4MB. Free memory was 125.4MB in the beginning and 105.8MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.57ms. Allocated memory is still 159.4MB. Free memory was 105.8MB in the beginning and 103.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.27ms. Allocated memory is still 159.4MB. Free memory was 103.8MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 511.28ms. Allocated memory is still 159.4MB. Free memory was 101.6MB in the beginning and 108.6MB in the end (delta: -7.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 59832.49ms. Allocated memory was 159.4MB in the beginning and 874.5MB in the end (delta: 715.1MB). Free memory was 107.6MB in the beginning and 408.9MB in the end (delta: -301.4MB). Peak memory consumption was 521.8MB. Max. memory is 16.1GB. * Witness Printer took 108.70ms. Allocated memory is still 874.5MB. Free memory was 408.9MB in the beginning and 401.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. 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,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [415] - GenericResultAtLocation [Line: 526]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [526] - GenericResultAtLocation [Line: 564]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [564] - GenericResultAtLocation [Line: 600]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [600] - GenericResultAtLocation [Line: 609]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [609] - GenericResultAtLocation [Line: 828]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [828] - GenericResultAtLocation [Line: 894]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [894] * 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: 605]: 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, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.8s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 11.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2349 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2312 mSDsluCounter, 2874 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2262 mSDsCounter, 1113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3991 IncrementalHoareTripleChecker+Invalid, 5104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1113 mSolverCounterUnsat, 612 mSDtfsCounter, 3991 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 642 GetRequests, 333 SyntacticMatches, 10 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10495 ImplicationChecksByTransitivity, 28.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3182occurred in iteration=10, InterpolantAutomatonStates: 231, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 999 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 2968 PreInvPairs, 3464 NumberOfFragments, 614 HoareAnnotationTreeSize, 2968 FomulaSimplifications, 158582 FormulaSimplificationTreeSizeReduction, 3.9s HoareSimplificationTime, 21 FomulaSimplificationsInter, 103272 FormulaSimplificationTreeSizeReductionInter, 7.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 551 NumberOfCodeBlocks, 551 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 625 ConstructedInterpolants, 0 QuantifiedInterpolants, 2100 SizeOfPredicates, 24 NumberOfNonLiveVariables, 715 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 16 InterpolantComputations, 9 PerfectInterpolantSequences, 121/152 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 906]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 840]: Loop Invariant Derived loop invariant: ((((((2 == waterLevel) && (!((methaneLevelCritical == 0)) || (pumpRunning == 1))) && (1 == systemActive)) && (splverifierCounter == 0)) && (tmp == 1)) || ((((waterLevel <= 1) && (1 == systemActive)) && (splverifierCounter == 0)) && (tmp == 1))) - InvariantResult [Line: 839]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 617]: Loop Invariant Derived loop invariant: ((((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) || (0 == systemActive)) || (2 < \old(waterLevel))) RESULT: Ultimate proved your program to be correct! [2023-12-02 19:41:03,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87cfbad-d645-4e52-8ee9-29fecab719a4/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