./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fff07e5b9817da9e6fd154070162cff001ebe527349ae31a2f1e574ef0fb9f98 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:54:25,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:54:25,581 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:54:25,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:54:25,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:54:25,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:54:25,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:54:25,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:54:25,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:54:25,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:54:25,635 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:54:25,636 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:54:25,636 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:54:25,636 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:54:25,637 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:54:25,639 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:54:25,639 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:54:25,640 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:54:25,640 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:54:25,640 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:54:25,641 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:54:25,645 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:54:25,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:54:25,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:54:25,646 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:54:25,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:54:25,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:54:25,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:54:25,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:54:25,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:54:25,648 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:54:25,648 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:54:25,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:54:25,649 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:54:25,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:54:25,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:54:25,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:54:25,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:54:25,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:54:25,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:54:25,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:54:25,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:54:25,652 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:54:25,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:54:25,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:54:25,653 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:54:25,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:54:25,653 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_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fff07e5b9817da9e6fd154070162cff001ebe527349ae31a2f1e574ef0fb9f98 [2024-11-09 05:54:25,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:54:25,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:54:25,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:54:25,958 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:54:25,958 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:54:25,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c Unable to find full path for "g++" [2024-11-09 05:54:27,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:54:28,191 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:54:28,192 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c [2024-11-09 05:54:28,203 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/data/a955b4d5f/953ba873a1e845b984755c45f5f540b2/FLAG9a2845469 [2024-11-09 05:54:28,529 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/data/a955b4d5f/953ba873a1e845b984755c45f5f540b2 [2024-11-09 05:54:28,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:54:28,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:54:28,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:54:28,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:54:28,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:54:28,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:54:28" (1/1) ... [2024-11-09 05:54:28,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e54fa7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:28, skipping insertion in model container [2024-11-09 05:54:28,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:54:28" (1/1) ... [2024-11-09 05:54:28,614 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:54:28,922 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c[16170,16183] [2024-11-09 05:54:28,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:54:28,948 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:54:28,958 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2024-11-09 05:54:28,960 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [415] [2024-11-09 05:54:28,960 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [484] [2024-11-09 05:54:28,960 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [649] [2024-11-09 05:54:28,961 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [687] [2024-11-09 05:54:28,961 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [785] [2024-11-09 05:54:28,961 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [794] [2024-11-09 05:54:28,961 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [889] [2024-11-09 05:54:29,024 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/sv-benchmarks/c/product-lines/minepump_spec5_product33.cil.c[16170,16183] [2024-11-09 05:54:29,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:54:29,070 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:54:29,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29 WrapperNode [2024-11-09 05:54:29,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:54:29,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:54:29,072 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:54:29,072 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:54:29,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,133 INFO L138 Inliner]: procedures = 54, calls = 96, calls flagged for inlining = 22, calls inlined = 18, statements flattened = 174 [2024-11-09 05:54:29,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:54:29,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:54:29,137 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:54:29,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:54:29,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:54:29,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:54:29,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:54:29,182 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:54:29,183 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (1/1) ... [2024-11-09 05:54:29,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:54:29,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:54:29,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:54:29,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:54:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:54:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 05:54:29,254 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 05:54:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:54:29,254 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:54:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:54:29,255 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:54:29,256 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 05:54:29,256 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 05:54:29,256 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-09 05:54:29,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-09 05:54:29,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:54:29,257 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 05:54:29,258 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 05:54:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:54:29,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:54:29,340 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:54:29,346 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:54:29,626 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-09 05:54:29,626 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:54:29,784 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:54:29,784 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:54:29,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:54:29 BoogieIcfgContainer [2024-11-09 05:54:29,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:54:29,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:54:29,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:54:29,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:54:29,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:54:28" (1/3) ... [2024-11-09 05:54:29,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a62401a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:54:29, skipping insertion in model container [2024-11-09 05:54:29,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:29" (2/3) ... [2024-11-09 05:54:29,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a62401a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:54:29, skipping insertion in model container [2024-11-09 05:54:29,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:54:29" (3/3) ... [2024-11-09 05:54:29,795 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product33.cil.c [2024-11-09 05:54:29,820 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:54:29,820 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:54:29,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:54:29,888 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@32df729b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:54:29,889 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:54:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 05:54:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:54:29,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:29,904 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:29,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:54:29,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1038231434, now seen corresponding path program 1 times [2024-11-09 05:54:29,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:54:29,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172149556] [2024-11-09 05:54:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:29,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:54:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:54:30,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:54:30,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172149556] [2024-11-09 05:54:30,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172149556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:54:30,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:54:30,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:54:30,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000393902] [2024-11-09 05:54:30,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:54:30,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:54:30,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:54:30,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:54:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:54:30,139 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:54:30,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:30,228 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2024-11-09 05:54:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:54:30,230 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-09 05:54:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:30,239 INFO L225 Difference]: With dead ends: 100 [2024-11-09 05:54:30,239 INFO L226 Difference]: Without dead ends: 46 [2024-11-09 05:54:30,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:54:30,246 INFO L432 NwaCegarLoop]: 49 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, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:54:30,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:54:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-09 05:54:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-09 05:54:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 05:54:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2024-11-09 05:54:30,296 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 21 [2024-11-09 05:54:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:30,297 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-11-09 05:54:30,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:54:30,297 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2024-11-09 05:54:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 05:54:30,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:30,299 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:30,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:54:30,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:54:30,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:30,301 INFO L85 PathProgramCache]: Analyzing trace with hash 915828956, now seen corresponding path program 1 times [2024-11-09 05:54:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:54:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123207302] [2024-11-09 05:54:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:30,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:54:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:54:30,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:54:30,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123207302] [2024-11-09 05:54:30,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123207302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:54:30,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:54:30,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:54:30,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519900388] [2024-11-09 05:54:30,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:54:30,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:54:30,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:54:30,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:54:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:54:30,459 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:54:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:30,504 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2024-11-09 05:54:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:54:30,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-09 05:54:30,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:30,505 INFO L225 Difference]: With dead ends: 69 [2024-11-09 05:54:30,505 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 05:54:30,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:54:30,507 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 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 [2024-11-09 05:54:30,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:54:30,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 05:54:30,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-09 05:54:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 05:54:30,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2024-11-09 05:54:30,515 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 22 [2024-11-09 05:54:30,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:30,515 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2024-11-09 05:54:30,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:54:30,516 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2024-11-09 05:54:30,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 05:54:30,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:30,516 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:30,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:54:30,517 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:54:30,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash 814910074, now seen corresponding path program 1 times [2024-11-09 05:54:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:54:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280589501] [2024-11-09 05:54:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:54:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:54:30,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:54:30,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280589501] [2024-11-09 05:54:30,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280589501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:54:30,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:54:30,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:54:30,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124613135] [2024-11-09 05:54:30,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:54:30,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:54:30,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:54:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:54:30,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:54:30,675 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:54:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:30,723 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2024-11-09 05:54:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:54:30,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-09 05:54:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:30,727 INFO L225 Difference]: With dead ends: 74 [2024-11-09 05:54:30,727 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 05:54:30,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:54:30,730 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:54:30,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 33 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:54:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 05:54:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-09 05:54:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.28) internal successors, (32), 30 states have internal predecessors, (32), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 05:54:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-11-09 05:54:30,747 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2024-11-09 05:54:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:30,748 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-11-09 05:54:30,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:54:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-11-09 05:54:30,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:54:30,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:30,752 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:30,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:54:30,752 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:54:30,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:30,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1464482374, now seen corresponding path program 1 times [2024-11-09 05:54:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:54:30,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227097858] [2024-11-09 05:54:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:54:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:54:31,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:54:31,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227097858] [2024-11-09 05:54:31,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227097858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:54:31,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:54:31,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:54:31,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596577989] [2024-11-09 05:54:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:54:31,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:54:31,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:54:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:54:31,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:54:31,097 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:54:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:31,339 INFO L93 Difference]: Finished difference Result 143 states and 179 transitions. [2024-11-09 05:54:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:54:31,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-09 05:54:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:31,341 INFO L225 Difference]: With dead ends: 143 [2024-11-09 05:54:31,342 INFO L226 Difference]: Without dead ends: 107 [2024-11-09 05:54:31,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:54:31,346 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 90 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:54:31,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 139 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:54:31,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-09 05:54:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2024-11-09 05:54:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 75 states have internal predecessors, (86), 18 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (19), 16 states have call predecessors, (19), 18 states have call successors, (19) [2024-11-09 05:54:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2024-11-09 05:54:31,383 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 27 [2024-11-09 05:54:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:31,383 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2024-11-09 05:54:31,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:54:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2024-11-09 05:54:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 05:54:31,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:31,385 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:31,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:54:31,385 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:54:31,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:31,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2001434379, now seen corresponding path program 1 times [2024-11-09 05:54:31,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:54:31,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127464845] [2024-11-09 05:54:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:31,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:54:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:54:31,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:54:31,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127464845] [2024-11-09 05:54:31,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127464845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:54:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510538773] [2024-11-09 05:54:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:31,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:54:31,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:54:31,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:54:31,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:54:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:31,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 05:54:31,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:54:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:54:31,734 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:54:31,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510538773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:54:31,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:54:31,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-09 05:54:31,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545387832] [2024-11-09 05:54:31,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:54:31,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:54:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:54:31,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:54:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:54:31,741 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 05:54:31,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:31,907 INFO L93 Difference]: Finished difference Result 237 states and 298 transitions. [2024-11-09 05:54:31,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:54:31,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-09 05:54:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:31,913 INFO L225 Difference]: With dead ends: 237 [2024-11-09 05:54:31,913 INFO L226 Difference]: Without dead ends: 140 [2024-11-09 05:54:31,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:54:31,917 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 18 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:54:31,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 143 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:54:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-09 05:54:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-09 05:54:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 102 states have internal predecessors, (112), 25 states have call successors, (25), 21 states have call predecessors, (25), 20 states have return successors, (28), 24 states have call predecessors, (28), 25 states have call successors, (28) [2024-11-09 05:54:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2024-11-09 05:54:31,957 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 29 [2024-11-09 05:54:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:31,958 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2024-11-09 05:54:31,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 05:54:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2024-11-09 05:54:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 05:54:31,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:31,960 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:31,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:54:32,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:54:32,165 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:54:32,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:32,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1696352713, now seen corresponding path program 1 times [2024-11-09 05:54:32,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:54:32,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891641157] [2024-11-09 05:54:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:32,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:54:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:54:32,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:54:32,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891641157] [2024-11-09 05:54:32,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891641157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:54:32,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:54:32,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:54:32,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680430974] [2024-11-09 05:54:32,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:54:32,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:54:32,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:54:32,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:54:32,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:54:32,541 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-11-09 05:54:33,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:33,027 INFO L93 Difference]: Finished difference Result 363 states and 442 transitions. [2024-11-09 05:54:33,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 05:54:33,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 30 [2024-11-09 05:54:33,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:33,031 INFO L225 Difference]: With dead ends: 363 [2024-11-09 05:54:33,033 INFO L226 Difference]: Without dead ends: 254 [2024-11-09 05:54:33,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:54:33,039 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 120 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:54:33,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 218 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:54:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-09 05:54:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2024-11-09 05:54:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 167 states have (on average 1.18562874251497) internal successors, (198), 184 states have internal predecessors, (198), 43 states have call successors, (43), 36 states have call predecessors, (43), 37 states have return successors, (51), 39 states have call predecessors, (51), 43 states have call successors, (51) [2024-11-09 05:54:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 292 transitions. [2024-11-09 05:54:33,121 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 292 transitions. Word has length 30 [2024-11-09 05:54:33,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:33,121 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 292 transitions. [2024-11-09 05:54:33,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-11-09 05:54:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 292 transitions. [2024-11-09 05:54:33,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 05:54:33,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:33,124 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:33,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:54:33,129 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:54:33,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash -574720440, now seen corresponding path program 1 times [2024-11-09 05:54:33,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:54:33,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118254414] [2024-11-09 05:54:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:33,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:54:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:54:33,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:54:33,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118254414] [2024-11-09 05:54:33,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118254414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:54:33,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690219018] [2024-11-09 05:54:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:33,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:54:33,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:54:33,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:54:33,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:54:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:33,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:54:33,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:54:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:54:33,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:54:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:54:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690219018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:54:33,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [829123819] [2024-11-09 05:54:33,789 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:54:33,789 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:54:33,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:54:33,798 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:54:33,799 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:54:41,971 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 149 for LOIs [2024-11-09 05:54:42,045 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 34 for LOIs [2024-11-09 05:54:42,285 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 41 for LOIs [2024-11-09 05:54:42,295 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 36 for LOIs [2024-11-09 05:54:42,305 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:54:45,822 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2896#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-09 05:54:45,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:54:45,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:54:45,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 14 [2024-11-09 05:54:45,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152927480] [2024-11-09 05:54:45,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:54:45,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:54:45,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:54:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:54:45,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1136, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 05:54:45,826 INFO L87 Difference]: Start difference. First operand 248 states and 292 transitions. Second operand has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 6 states have call successors, (16), 4 states have call predecessors, (16), 7 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-09 05:54:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:46,400 INFO L93 Difference]: Finished difference Result 451 states and 548 transitions. [2024-11-09 05:54:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 05:54:46,401 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 6 states have call successors, (16), 4 states have call predecessors, (16), 7 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 52 [2024-11-09 05:54:46,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:46,403 INFO L225 Difference]: With dead ends: 451 [2024-11-09 05:54:46,403 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 05:54:46,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=251, Invalid=1911, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 05:54:46,406 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 164 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:54:46,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 377 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:54:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 05:54:46,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-09 05:54:46,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 65 states have internal predecessors, (68), 15 states have call successors, (15), 13 states have call predecessors, (15), 12 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 05:54:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2024-11-09 05:54:46,422 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 52 [2024-11-09 05:54:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:46,423 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2024-11-09 05:54:46,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 6 states have call successors, (16), 4 states have call predecessors, (16), 7 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-09 05:54:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2024-11-09 05:54:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 05:54:46,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:46,425 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:46,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:54:46,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:54:46,626 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:54:46,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash 738206788, now seen corresponding path program 1 times [2024-11-09 05:54:46,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:54:46,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80263240] [2024-11-09 05:54:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:46,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:54:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:54:46,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:54:46,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80263240] [2024-11-09 05:54:46,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80263240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:54:46,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:54:46,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:54:46,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722887679] [2024-11-09 05:54:46,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:54:46,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:54:46,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:54:46,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:54:46,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:54:46,849 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 05:54:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:47,043 INFO L93 Difference]: Finished difference Result 166 states and 186 transitions. [2024-11-09 05:54:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:54:47,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 53 [2024-11-09 05:54:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:47,045 INFO L225 Difference]: With dead ends: 166 [2024-11-09 05:54:47,047 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 05:54:47,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:54:47,048 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 70 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:54:47,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 91 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:54:47,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 05:54:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2024-11-09 05:54:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 65 states have internal predecessors, (67), 15 states have call successors, (15), 13 states have call predecessors, (15), 12 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 05:54:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2024-11-09 05:54:47,066 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 53 [2024-11-09 05:54:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:47,066 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2024-11-09 05:54:47,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-09 05:54:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2024-11-09 05:54:47,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 05:54:47,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:47,072 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:47,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 05:54:47,073 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:54:47,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash 317773164, now seen corresponding path program 1 times [2024-11-09 05:54:47,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:54:47,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035510721] [2024-11-09 05:54:47,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:47,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:54:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:54:47,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:54:47,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035510721] [2024-11-09 05:54:47,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035510721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:54:47,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562520376] [2024-11-09 05:54:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:54:47,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:54:47,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:54:47,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:54:47,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:54:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:54:47,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:54:47,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:54:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 05:54:47,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:54:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 05:54:48,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562520376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:54:48,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1951336538] [2024-11-09 05:54:48,643 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:54:48,643 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:54:48,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:54:48,644 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:54:48,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:54:53,791 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 146 for LOIs [2024-11-09 05:54:53,856 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2024-11-09 05:54:54,144 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 66 for LOIs [2024-11-09 05:54:54,188 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 35 for LOIs [2024-11-09 05:54:54,192 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:54:58,446 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4520#(and (<= |old(~waterLevel~0)| 2147483647) (<= ~pumpRunning~0 1) (= |old(~pumpRunning~0)| 0) (<= 0 (+ |old(~waterLevel~0)| 2147483648)) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (exists ((|v_timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1_33| Int)) (and (<= |v_timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1_33| 1) (<= 0 |v_timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1_33|) (not (= |v_timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1_33| 0)))) (= ~switchedOnBeforeTS~0 0) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2024-11-09 05:54:58,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:54:58,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:54:58,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2024-11-09 05:54:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354077661] [2024-11-09 05:54:58,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:54:58,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 05:54:58,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:54:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 05:54:58,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1488, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 05:54:58,449 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 19 states, 16 states have (on average 5.3125) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-09 05:54:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:58,738 INFO L93 Difference]: Finished difference Result 123 states and 137 transitions. [2024-11-09 05:54:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:54:58,739 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 5.3125) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) Word has length 58 [2024-11-09 05:54:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:58,740 INFO L225 Difference]: With dead ends: 123 [2024-11-09 05:54:58,740 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:54:58,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 141 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=322, Invalid=1934, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 05:54:58,741 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 135 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:54:58,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 176 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:54:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:54:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:54:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:54:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:54:58,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2024-11-09 05:54:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:58,743 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:54:58,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 5.3125) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-09 05:54:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:54:58,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:54:58,746 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:54:58,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:54:58,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:54:58,953 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:54:58,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:55:00,965 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:55:01,014 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse7 (= |old(~pumpRunning~0)| 1)) (.cse6 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse6)) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (= |old(~waterLevel~0)| 1)) (.cse2 (= |old(~waterLevel~0)| 2)) (.cse5 (= 1 ~systemActive~0)) (.cse3 (not .cse7))) (and (or .cse0 (and .cse1 (= 2 ~waterLevel~0)) (not .cse2)) (or (not (= ~switchedOnBeforeTS~0 0)) .cse3 (= |old(~switchedOnBeforeTS~0)| 0)) (or .cse0 (not .cse4) (and .cse1 (= ~waterLevel~0 1))) (or (and .cse4 .cse5 .cse6) .cse7 (and .cse5 .cse6 .cse2)) (or (and .cse5 (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse3) (or (< |old(~switchedOnBeforeTS~0)| 1) .cse3 (<= 1 ~switchedOnBeforeTS~0))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~switchedOnBeforeTS~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse7 (= |old(~pumpRunning~0)| 1)) (.cse6 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse6)) (.cse1 (= ~pumpRunning~0 0)) (.cse4 (= |old(~waterLevel~0)| 1)) (.cse2 (= |old(~waterLevel~0)| 2)) (.cse5 (= 1 ~systemActive~0)) (.cse3 (not .cse7))) (and (or .cse0 (and .cse1 (= 2 ~waterLevel~0)) (not .cse2)) (or (not (= ~switchedOnBeforeTS~0 0)) .cse3 (= |old(~switchedOnBeforeTS~0)| 0)) (or (< |old(~switchedOnBeforeTS~0)| 1) (< 0 ~switchedOnBeforeTS~0) .cse3) (or .cse0 (not .cse4) (and .cse1 (= ~waterLevel~0 1))) (or (and .cse4 .cse5 .cse6) .cse7 (and .cse5 .cse6 .cse2)) (or (and .cse5 (= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse3))))) [2024-11-09 05:55:01,021 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:55:01,024 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 (= |old(~waterLevel~0)| 2)) (and .cse1 (= ~pumpRunning~0 1)) (and .cse0 (= |old(~waterLevel~0)| 1) .cse1))) (= |old(~waterLevel~0)| ~waterLevel~0)) Eliminated clause: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse1 (= ~pumpRunning~0 1)) (and .cse0 (= 2 ~waterLevel~0) .cse1))) [2024-11-09 05:55:01,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:55:01 BoogieIcfgContainer [2024-11-09 05:55:01,034 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:55:01,035 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:55:01,035 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:55:01,035 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:55:01,036 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:54:29" (3/4) ... [2024-11-09 05:55:01,038 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:55:01,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 05:55:01,042 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 05:55:01,042 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 05:55:01,042 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 05:55:01,042 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 05:55:01,043 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-09 05:55:01,051 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-11-09 05:55:01,052 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-09 05:55:01,052 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 05:55:01,053 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:55:01,053 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:55:01,163 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:55:01,163 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:55:01,164 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:55:01,164 INFO L158 Benchmark]: Toolchain (without parser) took 32629.25ms. Allocated memory was 127.9MB in the beginning and 847.2MB in the end (delta: 719.3MB). Free memory was 93.2MB in the beginning and 365.6MB in the end (delta: -272.4MB). Peak memory consumption was 448.3MB. Max. memory is 16.1GB. [2024-11-09 05:55:01,165 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:55:01,165 INFO L158 Benchmark]: CACSL2BoogieTranslator took 533.30ms. Allocated memory is still 127.9MB. Free memory was 92.8MB in the beginning and 71.4MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 05:55:01,165 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.68ms. Allocated memory is still 127.9MB. Free memory was 71.4MB in the beginning and 69.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:55:01,166 INFO L158 Benchmark]: Boogie Preprocessor took 39.51ms. Allocated memory is still 127.9MB. Free memory was 69.3MB in the beginning and 68.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:55:01,166 INFO L158 Benchmark]: RCFGBuilder took 604.83ms. Allocated memory was 127.9MB in the beginning and 161.5MB in the end (delta: 33.6MB). Free memory was 67.6MB in the beginning and 125.5MB in the end (delta: -57.9MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2024-11-09 05:55:01,170 INFO L158 Benchmark]: TraceAbstraction took 31246.81ms. Allocated memory was 161.5MB in the beginning and 847.2MB in the end (delta: 685.8MB). Free memory was 124.3MB in the beginning and 373.0MB in the end (delta: -248.7MB). Peak memory consumption was 435.9MB. Max. memory is 16.1GB. [2024-11-09 05:55:01,170 INFO L158 Benchmark]: Witness Printer took 128.61ms. Allocated memory is still 847.2MB. Free memory was 373.0MB in the beginning and 365.6MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 05:55:01,172 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 127.9MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 533.30ms. Allocated memory is still 127.9MB. Free memory was 92.8MB in the beginning and 71.4MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.68ms. Allocated memory is still 127.9MB. Free memory was 71.4MB in the beginning and 69.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.51ms. Allocated memory is still 127.9MB. Free memory was 69.3MB in the beginning and 68.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 604.83ms. Allocated memory was 127.9MB in the beginning and 161.5MB in the end (delta: 33.6MB). Free memory was 67.6MB in the beginning and 125.5MB in the end (delta: -57.9MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * TraceAbstraction took 31246.81ms. Allocated memory was 161.5MB in the beginning and 847.2MB in the end (delta: 685.8MB). Free memory was 124.3MB in the beginning and 373.0MB in the end (delta: -248.7MB). Peak memory consumption was 435.9MB. Max. memory is 16.1GB. * Witness Printer took 128.61ms. Allocated memory is still 847.2MB. Free memory was 373.0MB in the beginning and 365.6MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [415] - GenericResultAtLocation [Line: 484]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [484] - GenericResultAtLocation [Line: 649]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [649] - GenericResultAtLocation [Line: 687]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [687] - GenericResultAtLocation [Line: 785]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [785] - GenericResultAtLocation [Line: 794]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [794] - GenericResultAtLocation [Line: 889]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [889] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 790]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.1s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 656 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 638 mSDsluCounter, 1287 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 922 mSDsCounter, 302 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1128 IncrementalHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 302 mSolverCounterUnsat, 365 mSDtfsCounter, 1128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 460 GetRequests, 308 SyntacticMatches, 18 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1670 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=6, InterpolantAutomatonStates: 69, 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, 9 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 551 ConstructedInterpolants, 0 QuantifiedInterpolants, 2199 SizeOfPredicates, 10 NumberOfNonLiveVariables, 636 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 143/192 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 430]: Loop Invariant Derived loop invariant: ((((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) || ((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || (((1 == systemActive) && (splverifierCounter == 0)) && (pumpRunning == 1))) - InvariantResult [Line: 429]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 699]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 525]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((((1 == systemActive) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1)) || (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) Ensures: ((((((1 == systemActive) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1)) || (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) && (((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) - ProcedureContractResult [Line: 822]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || ((1 == systemActive) && (pumpRunning == 1))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) Ensures: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || ((1 == systemActive) && (pumpRunning == 1))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) && ((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) - ProcedureContractResult [Line: 689]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((head == \old(head)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 498]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((((\old(pumpRunning) != 0) || (2 == waterLevel)) || (\old(waterLevel) != 2)) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || ((pumpRunning == 0) && (waterLevel == 1)))) && (((1 <= switchedOnBeforeTS) && (pumpRunning == 1)) || (\old(pumpRunning) != 1))) && (((((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || ((1 == systemActive) && (\old(pumpRunning) == 1))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2)))) && ((pumpRunning == 0) || (pumpRunning == 1))) && ((((head == \old(head)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 810]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || ((1 == systemActive) && (pumpRunning == 1))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) Ensures: ((((((((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) == 2)) || ((1 == systemActive) && (pumpRunning == 1))) || (((pumpRunning == 0) && (\old(waterLevel) == 1)) && (1 == systemActive))) && ((1 < \old(waterLevel)) || (((long long) \old(waterLevel) + 1) == waterLevel))) && ((2 == waterLevel) || (\old(waterLevel) != 2))) && ((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) - ProcedureContractResult [Line: 585]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || ((1 == systemActive) && (pumpRunning == 1))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) Ensures: ((((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || ((1 == systemActive) && (pumpRunning == 1))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) && ((pumpRunning != 0) || (\result == 0))) && ((\result == 1) || (pumpRunning != 1))) && (((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:55:01,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ddd8e2e-ae93-44d5-a7e6-7593bf0d8f40/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE