./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire --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 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:12:25,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:12:25,257 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:12:25,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:12:25,264 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:12:25,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:12:25,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:12:25,301 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:12:25,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:12:25,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:12:25,303 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:12:25,304 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:12:25,304 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:12:25,305 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:12:25,306 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:12:25,306 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:12:25,307 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:12:25,307 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:12:25,308 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:12:25,309 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:12:25,309 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:12:25,313 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:12:25,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:12:25,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:12:25,315 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:12:25,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:12:25,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:12:25,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:12:25,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:12:25,318 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:12:25,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:12:25,320 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:12:25,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:12:25,320 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:12:25,321 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:12:25,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:12:25,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:12:25,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:25,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:12:25,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:12:25,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:12:25,323 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:12:25,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:12:25,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:12:25,324 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:12:25,324 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:12:25,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:12:25,325 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_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 [2023-11-23 21:12:25,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:12:25,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:12:25,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:12:25,608 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:12:25,609 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:12:25,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2023-11-23 21:12:28,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:12:29,015 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:12:29,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2023-11-23 21:12:29,031 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/data/85b306367/5ffc81d93b6d45fca87f80c538d209a6/FLAG35df311d6 [2023-11-23 21:12:29,052 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/data/85b306367/5ffc81d93b6d45fca87f80c538d209a6 [2023-11-23 21:12:29,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:12:29,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:12:29,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:29,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:12:29,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:12:29,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409f8af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29, skipping insertion in model container [2023-11-23 21:12:29,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,146 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:12:29,476 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_9072d44a-bdf0-4693-91c1-64d30b362893/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2023-11-23 21:12:29,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:29,494 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:12:29,505 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2023-11-23 21:12:29,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [150] [2023-11-23 21:12:29,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [516] [2023-11-23 21:12:29,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [554] [2023-11-23 21:12:29,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [655] [2023-11-23 21:12:29,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [836] [2023-11-23 21:12:29,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [905] [2023-11-23 21:12:29,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [914] [2023-11-23 21:12:29,562 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_9072d44a-bdf0-4693-91c1-64d30b362893/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2023-11-23 21:12:29,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:29,586 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:12:29,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29 WrapperNode [2023-11-23 21:12:29,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:29,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:29,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:12:29,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:12:29,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,636 INFO L138 Inliner]: procedures = 55, calls = 97, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 182 [2023-11-23 21:12:29,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:29,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:12:29,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:12:29,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:12:29,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:12:29,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:12:29,679 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:12:29,679 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:12:29,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (1/1) ... [2023-11-23 21:12:29,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:29,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:12:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:12:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-23 21:12:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-23 21:12:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-23 21:12:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-23 21:12:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-23 21:12:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-23 21:12:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-23 21:12:29,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-23 21:12:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-23 21:12:29,764 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-23 21:12:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:12:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-23 21:12:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-23 21:12:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:12:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:12:29,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:12:29,878 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:12:29,881 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:12:30,205 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:12:30,373 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:12:30,373 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:12:30,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:30 BoogieIcfgContainer [2023-11-23 21:12:30,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:12:30,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:12:30,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:12:30,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:12:30,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:29" (1/3) ... [2023-11-23 21:12:30,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20245afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:30, skipping insertion in model container [2023-11-23 21:12:30,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:29" (2/3) ... [2023-11-23 21:12:30,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20245afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:30, skipping insertion in model container [2023-11-23 21:12:30,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:30" (3/3) ... [2023-11-23 21:12:30,385 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2023-11-23 21:12:30,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:12:30,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:12:30,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:12:30,469 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;@52df92a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:12:30,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:12:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 32 states have (on average 1.4375) internal successors, (46), 38 states have internal predecessors, (46), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:12:30,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:12:30,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:30,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:30,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:30,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash -185638784, now seen corresponding path program 1 times [2023-11-23 21:12:30,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:30,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318469462] [2023-11-23 21:12:30,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:30,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:12:30,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:30,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318469462] [2023-11-23 21:12:30,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318469462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:30,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:30,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:12:30,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036976605] [2023-11-23 21:12:30,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:30,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:12:30,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:30,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:12:30,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:12:30,749 INFO L87 Difference]: Start difference. First operand has 49 states, 32 states have (on average 1.4375) internal successors, (46), 38 states have internal predecessors, (46), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) 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) [2023-11-23 21:12:30,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:30,815 INFO L93 Difference]: Finished difference Result 96 states and 129 transitions. [2023-11-23 21:12:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:12:30,822 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 [2023-11-23 21:12:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:30,831 INFO L225 Difference]: With dead ends: 96 [2023-11-23 21:12:30,831 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 21:12:30,835 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 [2023-11-23 21:12:30,839 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:30,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:12:30,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 21:12:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-23 21:12:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 34 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:12:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2023-11-23 21:12:30,885 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 17 [2023-11-23 21:12:30,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:30,886 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2023-11-23 21:12:30,886 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) [2023-11-23 21:12:30,886 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2023-11-23 21:12:30,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:12:30,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:30,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:30,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:12:30,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:30,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:30,890 INFO L85 PathProgramCache]: Analyzing trace with hash 432370107, now seen corresponding path program 1 times [2023-11-23 21:12:30,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:30,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256139381] [2023-11-23 21:12:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:30,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:12:31,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256139381] [2023-11-23 21:12:31,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256139381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:31,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:31,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:31,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628855992] [2023-11-23 21:12:31,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:31,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:31,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:31,033 INFO L87 Difference]: Start difference. First operand 44 states and 55 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) [2023-11-23 21:12:31,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:31,072 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2023-11-23 21:12:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:31,073 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 [2023-11-23 21:12:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:31,074 INFO L225 Difference]: With dead ends: 65 [2023-11-23 21:12:31,075 INFO L226 Difference]: Without dead ends: 36 [2023-11-23 21:12:31,075 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 [2023-11-23 21:12:31,077 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:31,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 55 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:12:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-23 21:12:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-23 21:12:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 29 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:12:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-11-23 21:12:31,086 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 18 [2023-11-23 21:12:31,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:31,087 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-11-23 21:12:31,087 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) [2023-11-23 21:12:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-23 21:12:31,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:12:31,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:31,088 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] [2023-11-23 21:12:31,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:12:31,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:31,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1610678763, now seen corresponding path program 1 times [2023-11-23 21:12:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:31,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317484703] [2023-11-23 21:12:31,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:31,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:12:31,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:31,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317484703] [2023-11-23 21:12:31,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317484703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:31,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:31,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:31,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551696309] [2023-11-23 21:12:31,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:31,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:31,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:31,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:31,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:31,273 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:12:31,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:31,405 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2023-11-23 21:12:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:31,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-23 21:12:31,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:31,408 INFO L225 Difference]: With dead ends: 70 [2023-11-23 21:12:31,408 INFO L226 Difference]: Without dead ends: 68 [2023-11-23 21:12:31,414 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 [2023-11-23 21:12:31,416 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 24 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:31,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 59 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:12:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-23 21:12:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-23 21:12:31,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 54 states have internal predecessors, (60), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (14), 10 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-23 21:12:31,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2023-11-23 21:12:31,433 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 20 [2023-11-23 21:12:31,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:31,433 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2023-11-23 21:12:31,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:12:31,434 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2023-11-23 21:12:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 21:12:31,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:31,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:31,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:12:31,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:31,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:31,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2002510962, now seen corresponding path program 1 times [2023-11-23 21:12:31,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:31,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90098245] [2023-11-23 21:12:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:12:31,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:31,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90098245] [2023-11-23 21:12:31,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90098245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:31,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:31,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:12:31,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180944276] [2023-11-23 21:12:31,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:31,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:12:31,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:12:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:12:31,788 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:12:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:32,079 INFO L93 Difference]: Finished difference Result 209 states and 274 transitions. [2023-11-23 21:12:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:12:32,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2023-11-23 21:12:32,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:32,083 INFO L225 Difference]: With dead ends: 209 [2023-11-23 21:12:32,083 INFO L226 Difference]: Without dead ends: 143 [2023-11-23 21:12:32,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:12:32,086 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 64 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:32,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 115 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:12:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-23 21:12:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 127. [2023-11-23 21:12:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 88 states have (on average 1.2954545454545454) internal successors, (114), 97 states have internal predecessors, (114), 19 states have call successors, (19), 17 states have call predecessors, (19), 19 states have return successors, (29), 19 states have call predecessors, (29), 19 states have call successors, (29) [2023-11-23 21:12:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 162 transitions. [2023-11-23 21:12:32,114 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 162 transitions. Word has length 39 [2023-11-23 21:12:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:32,115 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 162 transitions. [2023-11-23 21:12:32,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:12:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 162 transitions. [2023-11-23 21:12:32,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:12:32,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:32,118 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:12:32,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:12:32,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:32,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:32,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1281201508, now seen corresponding path program 1 times [2023-11-23 21:12:32,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:32,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716710579] [2023-11-23 21:12:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:32,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:12:32,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716710579] [2023-11-23 21:12:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716710579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:12:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668141230] [2023-11-23 21:12:32,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:32,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:12:32,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:32,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:12:32,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:12:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:32,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 21:12:32,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:12:33,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:12:33,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668141230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:33,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:12:33,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2023-11-23 21:12:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48571438] [2023-11-23 21:12:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:33,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:12:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:33,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:12:33,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:12:33,074 INFO L87 Difference]: Start difference. First operand 127 states and 162 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:12:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:33,464 INFO L93 Difference]: Finished difference Result 311 states and 405 transitions. [2023-11-23 21:12:33,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:12:33,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-11-23 21:12:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:33,468 INFO L225 Difference]: With dead ends: 311 [2023-11-23 21:12:33,468 INFO L226 Difference]: Without dead ends: 186 [2023-11-23 21:12:33,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:12:33,471 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 67 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:33,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 174 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:12:33,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-23 21:12:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 154. [2023-11-23 21:12:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 107 states have (on average 1.280373831775701) internal successors, (137), 117 states have internal predecessors, (137), 22 states have call successors, (22), 22 states have call predecessors, (22), 24 states have return successors, (35), 22 states have call predecessors, (35), 22 states have call successors, (35) [2023-11-23 21:12:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2023-11-23 21:12:33,510 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 42 [2023-11-23 21:12:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:33,511 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2023-11-23 21:12:33,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:12:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2023-11-23 21:12:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 21:12:33,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:33,514 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:12:33,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:12:33,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:12:33,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:33,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash 879052993, now seen corresponding path program 1 times [2023-11-23 21:12:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:33,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343098213] [2023-11-23 21:12:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:33,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:12:34,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:34,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343098213] [2023-11-23 21:12:34,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343098213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:12:34,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921125539] [2023-11-23 21:12:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:34,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:12:34,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:34,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:12:34,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:12:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:34,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 21:12:34,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:12:34,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:12:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:12:34,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921125539] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:12:34,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1735100004] [2023-11-23 21:12:34,532 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-23 21:12:34,532 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:12:34,536 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:12:34,542 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:12:34,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:12:41,717 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 122 for LOIs [2023-11-23 21:12:41,752 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 172 for LOIs [2023-11-23 21:12:42,807 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 1 for LOIs [2023-11-23 21:12:42,808 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:12:53,846 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2071#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~7#1| ~methaneLevelCritical~0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~7#1| 0)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 0)) (<= ~methaneLevelCritical~0 2147483647) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 (+ ~methaneLevelCritical~0 2147483648)) (not (= ~methAndRunningLastTime~0 0)))' at error location [2023-11-23 21:12:53,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:12:53,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:12:53,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 10 [2023-11-23 21:12:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864022698] [2023-11-23 21:12:53,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:12:53,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:12:53,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:12:53,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2023-11-23 21:12:53,850 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 21:12:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:54,223 INFO L93 Difference]: Finished difference Result 344 states and 440 transitions. [2023-11-23 21:12:54,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:12:54,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 45 [2023-11-23 21:12:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:54,230 INFO L225 Difference]: With dead ends: 344 [2023-11-23 21:12:54,230 INFO L226 Difference]: Without dead ends: 192 [2023-11-23 21:12:54,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 21:12:54,240 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 112 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:54,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 206 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:12:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-23 21:12:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 139. [2023-11-23 21:12:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 106 states have internal predecessors, (115), 20 states have call successors, (20), 20 states have call predecessors, (20), 23 states have return successors, (28), 20 states have call predecessors, (28), 20 states have call successors, (28) [2023-11-23 21:12:54,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2023-11-23 21:12:54,286 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 45 [2023-11-23 21:12:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:54,286 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2023-11-23 21:12:54,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 21:12:54,287 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2023-11-23 21:12:54,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 21:12:54,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:54,297 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:12:54,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:54,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 21:12:54,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:54,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:54,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1943804672, now seen corresponding path program 1 times [2023-11-23 21:12:54,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:54,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55447792] [2023-11-23 21:12:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:54,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:12:54,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55447792] [2023-11-23 21:12:54,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55447792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:12:54,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280284328] [2023-11-23 21:12:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:54,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:12:54,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:54,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:12:54,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:12:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:54,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:12:54,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 21:12:54,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:12:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:12:54,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280284328] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:12:54,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:12:54,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 5] total 11 [2023-11-23 21:12:54,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370149084] [2023-11-23 21:12:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:54,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:12:54,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:12:54,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:12:54,955 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:12:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:55,082 INFO L93 Difference]: Finished difference Result 375 states and 447 transitions. [2023-11-23 21:12:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:12:55,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2023-11-23 21:12:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:55,085 INFO L225 Difference]: With dead ends: 375 [2023-11-23 21:12:55,085 INFO L226 Difference]: Without dead ends: 238 [2023-11-23 21:12:55,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:12:55,087 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:55,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 135 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:12:55,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-23 21:12:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 226. [2023-11-23 21:12:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 156 states have (on average 1.1923076923076923) internal successors, (186), 171 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 37 states have return successors, (44), 32 states have call predecessors, (44), 32 states have call successors, (44) [2023-11-23 21:12:55,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 262 transitions. [2023-11-23 21:12:55,124 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 262 transitions. Word has length 50 [2023-11-23 21:12:55,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:55,125 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 262 transitions. [2023-11-23 21:12:55,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:12:55,125 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 262 transitions. [2023-11-23 21:12:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 21:12:55,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:55,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:55,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:55,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:12:55,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:55,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:55,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1668174637, now seen corresponding path program 1 times [2023-11-23 21:12:55,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:55,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732840483] [2023-11-23 21:12:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:55,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:12:55,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:12:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:12:55,410 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:12:55,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:12:55,411 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:12:55,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:12:55,416 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:55,420 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:12:55,456 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated [2023-11-23 21:12:55,457 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated [2023-11-23 21:12:55,458 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated [2023-11-23 21:12:55,459 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated [2023-11-23 21:12:55,459 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated [2023-11-23 21:12:55,460 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated [2023-11-23 21:12:55,462 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated [2023-11-23 21:12:55,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:12:55 BoogieIcfgContainer [2023-11-23 21:12:55,481 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:12:55,481 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:12:55,481 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:12:55,481 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:12:55,482 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:30" (3/4) ... [2023-11-23 21:12:55,483 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 21:12:55,503 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated [2023-11-23 21:12:55,514 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated [2023-11-23 21:12:55,517 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated [2023-11-23 21:12:55,518 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated [2023-11-23 21:12:55,519 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated [2023-11-23 21:12:55,520 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated [2023-11-23 21:12:55,522 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated [2023-11-23 21:12:55,596 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:12:55,596 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:12:55,597 INFO L158 Benchmark]: Toolchain (without parser) took 26534.53ms. Allocated memory was 113.2MB in the beginning and 652.2MB in the end (delta: 539.0MB). Free memory was 75.8MB in the beginning and 451.8MB in the end (delta: -376.0MB). Peak memory consumption was 165.8MB. Max. memory is 16.1GB. [2023-11-23 21:12:55,597 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 60.1MB in the beginning and 60.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:12:55,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.69ms. Allocated memory is still 113.2MB. Free memory was 75.8MB in the beginning and 56.1MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:12:55,598 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.05ms. Allocated memory is still 113.2MB. Free memory was 56.1MB in the beginning and 54.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:12:55,599 INFO L158 Benchmark]: Boogie Preprocessor took 40.69ms. Allocated memory is still 113.2MB. Free memory was 54.1MB in the beginning and 52.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:12:55,599 INFO L158 Benchmark]: RCFGBuilder took 696.64ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 52.4MB in the beginning and 105.7MB in the end (delta: -53.3MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-11-23 21:12:55,600 INFO L158 Benchmark]: TraceAbstraction took 25102.37ms. Allocated memory was 146.8MB in the beginning and 652.2MB in the end (delta: 505.4MB). Free memory was 104.9MB in the beginning and 457.0MB in the end (delta: -352.1MB). Peak memory consumption was 152.1MB. Max. memory is 16.1GB. [2023-11-23 21:12:55,600 INFO L158 Benchmark]: Witness Printer took 114.91ms. Allocated memory is still 652.2MB. Free memory was 457.0MB in the beginning and 451.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:12:55,602 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 60.1MB in the beginning and 60.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.69ms. Allocated memory is still 113.2MB. Free memory was 75.8MB in the beginning and 56.1MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.05ms. Allocated memory is still 113.2MB. Free memory was 56.1MB in the beginning and 54.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.69ms. Allocated memory is still 113.2MB. Free memory was 54.1MB in the beginning and 52.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 696.64ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 52.4MB in the beginning and 105.7MB in the end (delta: -53.3MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * TraceAbstraction took 25102.37ms. Allocated memory was 146.8MB in the beginning and 652.2MB in the end (delta: 505.4MB). Free memory was 104.9MB in the beginning and 457.0MB in the end (delta: -352.1MB). Peak memory consumption was 152.1MB. Max. memory is 16.1GB. * Witness Printer took 114.91ms. Allocated memory is still 652.2MB. Free memory was 457.0MB in the beginning and 451.8MB in the end (delta: 5.2MB). 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,"Environment.i","") [49] - GenericResultAtLocation [Line: 150]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [150] - GenericResultAtLocation [Line: 516]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [516] - GenericResultAtLocation [Line: 554]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [554] - GenericResultAtLocation [Line: 655]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [655] - GenericResultAtLocation [Line: 836]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [836] - GenericResultAtLocation [Line: 905]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [905] - GenericResultAtLocation [Line: 914]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [914] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 910]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int cleanupTimeShifts = 4; [L661] int pumpRunning = 0; [L662] int systemActive = 1; [L915] int methAndRunningLastTime ; [L633] int retValue_acc ; [L634] int tmp ; [L638] FCALL select_helpers() [L639] FCALL select_features() [L640] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); [L640] RET, EXPR valid_product() [L640] tmp = valid_product() [L642] COND TRUE \read(tmp) [L644] FCALL setup() [L645] CALL runTest() [L626] CALL __utac_acc__Specification2_spec__1() [L920] methAndRunningLastTime = 0 [L626] RET __utac_acc__Specification2_spec__1() [L627] CALL test() [L838] int splverifierCounter ; [L839] int tmp ; [L840] int tmp___0 ; [L841] int tmp___1 ; [L842] int tmp___2 ; [L845] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L847] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L849] COND TRUE splverifierCounter < 4 [L855] tmp = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L859] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 [L859] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L869] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 [L869] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND TRUE \read(tmp___2) [L879] CALL startSystem() [L832] systemActive = 1 [L879] RET startSystem() [L894] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L669] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L701] COND TRUE ! pumpRunning [L703] CALL, EXPR isHighWaterLevel() [L795] int retValue_acc ; [L796] int tmp ; [L797] int tmp___0 ; [L801] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); [L801] RET, EXPR isHighWaterSensorDry() [L801] tmp = isHighWaterSensorDry() [L803] COND FALSE !(\read(tmp)) [L806] tmp___0 = 1 [L808] retValue_acc = tmp___0 [L809] return (retValue_acc); [L703] RET, EXPR isHighWaterLevel() [L703] tmp = isHighWaterLevel() [L705] COND TRUE \read(tmp) [L707] CALL activatePump() [L726] pumpRunning = 1 [L707] RET activatePump() [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification2_spec__2() [L925] int tmp ; [L926] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L930] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L930] tmp = isMethaneLevelCritical() [L932] COND TRUE \read(tmp) [L934] CALL, EXPR isPumpRunning() [L750] int retValue_acc ; [L753] retValue_acc = pumpRunning [L754] return (retValue_acc); [L934] RET, EXPR isPumpRunning() [L934] tmp___0 = isPumpRunning() [L936] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L937] COND FALSE !(\read(methAndRunningLastTime)) [L942] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L684] RET __utac_acc__Specification2_spec__2() [L894] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=0, tmp___2=-1, waterLevel=2] [L847] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=0, tmp___2=-1, waterLevel=2] [L849] COND TRUE splverifierCounter < 4 [L855] tmp = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=-1, waterLevel=2] [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=-1, waterLevel=2] [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND FALSE !(\read(tmp___2)) [L883] tmp___1 = __VERIFIER_nondet_int() [L885] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L894] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L669] COND TRUE \read(pumpRunning) [L671] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 [L671] RET lowerWaterLevel() [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L701] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L716] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification2_spec__2() [L925] int tmp ; [L926] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L930] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L930] tmp = isMethaneLevelCritical() [L932] COND TRUE \read(tmp) [L934] CALL, EXPR isPumpRunning() [L750] int retValue_acc ; [L753] retValue_acc = pumpRunning [L754] return (retValue_acc); [L934] RET, EXPR isPumpRunning() [L934] tmp___0 = isPumpRunning() [L936] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L937] COND TRUE \read(methAndRunningLastTime) [L939] CALL __automaton_fail() [L910] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.0s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 302 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 790 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 510 mSDsCounter, 121 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 717 IncrementalHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 121 mSolverCounterUnsat, 280 mSDtfsCounter, 717 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 337 GetRequests, 259 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=7, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 113 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 1533 SizeOfPredicates, 15 NumberOfNonLiveVariables, 675 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 138/159 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-23 21:12:55,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9072d44a-bdf0-4693-91c1-64d30b362893/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE