./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2 --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 1b7b562c6a835e9c81bbd978940c7270ae455ff1120bac33da414b2ebf27928d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:23:57,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:23:57,378 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:23:57,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:23:57,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:23:57,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:23:57,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:23:57,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:23:57,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:23:57,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:23:57,421 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:23:57,423 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:23:57,424 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:23:57,428 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:23:57,428 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:23:57,429 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:23:57,429 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:23:57,429 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:23:57,430 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:23:57,430 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:23:57,430 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:23:57,433 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:23:57,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:23:57,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:23:57,434 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:23:57,435 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:23:57,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:23:57,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:23:57,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:23:57,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:23:57,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:23:57,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:23:57,438 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:23:57,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:23:57,439 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:23:57,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:23:57,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:23:57,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:23:57,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:23:57,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:23:57,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:23:57,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:23:57,441 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:23:57,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:23:57,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:23:57,442 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:23:57,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:23:57,442 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_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b7b562c6a835e9c81bbd978940c7270ae455ff1120bac33da414b2ebf27928d [2024-11-02 12:23:57,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:23:57,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:23:57,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:23:57,828 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:23:57,829 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:23:57,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/minepump_spec4_product13.cil.c Unable to find full path for "g++" [2024-11-02 12:24:00,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:24:00,394 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:24:00,394 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/sv-benchmarks/c/product-lines/minepump_spec4_product13.cil.c [2024-11-02 12:24:00,406 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/data/f51604e2b/d3b5cd47c2254a8486743af1572964c9/FLAG1dba6c12c [2024-11-02 12:24:00,420 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/data/f51604e2b/d3b5cd47c2254a8486743af1572964c9 [2024-11-02 12:24:00,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:24:00,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:24:00,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:00,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:24:00,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:24:00,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:00,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de520aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00, skipping insertion in model container [2024-11-02 12:24:00,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:00,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:24:00,781 WARN L251 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_71b96dc4-cc7f-478d-890a-18cf731633bf/sv-benchmarks/c/product-lines/minepump_spec4_product13.cil.c[12494,12507] [2024-11-02 12:24:00,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:00,828 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:24:00,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2024-11-02 12:24:00,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [135] [2024-11-02 12:24:00,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [501] [2024-11-02 12:24:00,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [510] [2024-11-02 12:24:00,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [537] [2024-11-02 12:24:00,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [639] [2024-11-02 12:24:00,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [791] [2024-11-02 12:24:00,842 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [856] [2024-11-02 12:24:00,889 WARN L251 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_71b96dc4-cc7f-478d-890a-18cf731633bf/sv-benchmarks/c/product-lines/minepump_spec4_product13.cil.c[12494,12507] [2024-11-02 12:24:00,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:00,941 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:24:00,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00 WrapperNode [2024-11-02 12:24:00,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:00,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:00,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:24:00,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:24:00,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:00,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:00,993 INFO L138 Inliner]: procedures = 51, calls = 94, calls flagged for inlining = 20, calls inlined = 16, statements flattened = 160 [2024-11-02 12:24:00,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:00,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:24:00,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:24:00,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:24:01,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:01,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:01,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:01,006 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:01,011 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:01,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:01,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:01,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:01,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:24:01,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:24:01,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:24:01,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:24:01,022 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (1/1) ... [2024-11-02 12:24:01,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:01,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:01,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:24:01,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:24:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:24:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:24:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:24:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:24:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:24:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-02 12:24:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-02 12:24:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-02 12:24:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-02 12:24:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-02 12:24:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-02 12:24:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:24:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-02 12:24:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-02 12:24:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:24:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:24:01,198 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:24:01,200 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:24:01,502 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-02 12:24:01,502 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:24:01,613 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:24:01,614 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:24:01,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:01 BoogieIcfgContainer [2024-11-02 12:24:01,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:24:01,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:24:01,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:24:01,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:24:01,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:24:00" (1/3) ... [2024-11-02 12:24:01,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4330827b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:01, skipping insertion in model container [2024-11-02 12:24:01,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:00" (2/3) ... [2024-11-02 12:24:01,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4330827b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:01, skipping insertion in model container [2024-11-02 12:24:01,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:01" (3/3) ... [2024-11-02 12:24:01,628 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product13.cil.c [2024-11-02 12:24:01,648 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:24:01,649 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:24:01,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:24:01,730 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;@77675ea5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:24:01,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:24:01,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-02 12:24:01,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 12:24:01,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:01,745 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:01,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:01,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash 584498880, now seen corresponding path program 1 times [2024-11-02 12:24:01,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:01,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087100547] [2024-11-02 12:24:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:01,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:01,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:01,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087100547] [2024-11-02 12:24:01,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087100547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:01,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:01,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:01,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927441330] [2024-11-02 12:24:01,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:01,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:24:01,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:01,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:24:01,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:24:01,989 INFO L87 Difference]: Start difference. First operand has 48 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:02,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:02,063 INFO L93 Difference]: Finished difference Result 94 states and 125 transitions. [2024-11-02 12:24:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:24:02,066 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-02 12:24:02,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:02,078 INFO L225 Difference]: With dead ends: 94 [2024-11-02 12:24:02,078 INFO L226 Difference]: Without dead ends: 43 [2024-11-02 12:24:02,081 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 [2024-11-02 12:24:02,085 INFO L432 NwaCegarLoop]: 44 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, 44 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:02,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:02,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-02 12:24:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-02 12:24:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 33 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:24:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-11-02 12:24:02,128 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 12 [2024-11-02 12:24:02,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:02,129 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-11-02 12:24:02,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-11-02 12:24:02,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:24:02,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:02,131 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:02,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:24:02,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:02,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1928936004, now seen corresponding path program 1 times [2024-11-02 12:24:02,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:02,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990520844] [2024-11-02 12:24:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:02,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:02,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:02,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990520844] [2024-11-02 12:24:02,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990520844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:02,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:02,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:24:02,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984789304] [2024-11-02 12:24:02,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:02,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:02,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:02,283 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:02,332 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2024-11-02 12:24:02,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:02,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-02 12:24:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:02,334 INFO L225 Difference]: With dead ends: 63 [2024-11-02 12:24:02,334 INFO L226 Difference]: Without dead ends: 35 [2024-11-02 12:24:02,335 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 [2024-11-02 12:24:02,337 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 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 [2024-11-02 12:24:02,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-02 12:24:02,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-02 12:24:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 28 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:24:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-02 12:24:02,347 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 13 [2024-11-02 12:24:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:02,347 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-02 12:24:02,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:02,348 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-02 12:24:02,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:24:02,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:02,349 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:02,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:24:02,350 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:02,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1881113372, now seen corresponding path program 1 times [2024-11-02 12:24:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:02,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096411331] [2024-11-02 12:24:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:02,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:02,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:02,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096411331] [2024-11-02 12:24:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096411331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:02,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:02,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457952443] [2024-11-02 12:24:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:02,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:02,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:02,460 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:02,502 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2024-11-02 12:24:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:02,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-02 12:24:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:02,504 INFO L225 Difference]: With dead ends: 68 [2024-11-02 12:24:02,504 INFO L226 Difference]: Without dead ends: 35 [2024-11-02 12:24:02,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:02,506 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 28 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 [2024-11-02 12:24:02,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 28 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-02 12:24:02,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-02 12:24:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:24:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-02 12:24:02,516 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 15 [2024-11-02 12:24:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:02,517 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-02 12:24:02,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:24:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-02 12:24:02,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:24:02,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:02,518 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:02,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:24:02,519 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:02,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:02,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1215133896, now seen corresponding path program 1 times [2024-11-02 12:24:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:02,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13381032] [2024-11-02 12:24:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:02,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:02,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:02,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13381032] [2024-11-02 12:24:02,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13381032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:02,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:02,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:24:02,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546890871] [2024-11-02 12:24:02,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:02,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:24:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:02,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:24:02,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:24:02,885 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:03,006 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2024-11-02 12:24:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:24:03,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-02 12:24:03,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:03,011 INFO L225 Difference]: With dead ends: 91 [2024-11-02 12:24:03,011 INFO L226 Difference]: Without dead ends: 58 [2024-11-02 12:24:03,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:03,015 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:03,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 83 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:24:03,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-02 12:24:03,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-02 12:24:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 44 states have internal predecessors, (46), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-02 12:24:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-02 12:24:03,041 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 20 [2024-11-02 12:24:03,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:03,044 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-02 12:24:03,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:24:03,044 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-02 12:24:03,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:24:03,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:03,046 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:03,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:24:03,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:03,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash -201526247, now seen corresponding path program 1 times [2024-11-02 12:24:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:03,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815677674] [2024-11-02 12:24:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:03,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:03,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815677674] [2024-11-02 12:24:03,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815677674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:03,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:03,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:24:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379057821] [2024-11-02 12:24:03,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:03,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:03,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:03,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:03,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:03,164 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:24:03,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:03,227 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2024-11-02 12:24:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:24:03,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-02 12:24:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:03,232 INFO L225 Difference]: With dead ends: 81 [2024-11-02 12:24:03,232 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:24:03,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:24:03,233 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:03,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 36 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:24:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:24:03,239 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) [2024-11-02 12:24:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:24:03,239 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2024-11-02 12:24:03,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:03,240 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:24:03,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:24:03,240 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:24:03,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:24:03,243 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:24:03,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:24:03,250 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-02 12:24:03,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:24:03,671 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:24:03,728 WARN L156 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (or (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0)) Eliminated clause: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0)) [2024-11-02 12:24:03,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:24:03 BoogieIcfgContainer [2024-11-02 12:24:03,740 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:24:03,741 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:24:03,741 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:24:03,741 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:24:03,742 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:01" (3/4) ... [2024-11-02 12:24:03,745 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:24:03,748 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-02 12:24:03,748 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-02 12:24:03,748 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-02 12:24:03,749 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-02 12:24:03,749 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-02 12:24:03,749 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-02 12:24:03,757 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2024-11-02 12:24:03,757 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-02 12:24:03,758 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-02 12:24:03,758 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:24:03,759 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:24:03,789 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == 0) && ((\old(waterLevel) != 1) || (waterLevel == 1))) && (1 == systemActive)) && (\old(pumpRunning) == 0)) [2024-11-02 12:24:03,822 WARN L140 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == 0) && ((\old(waterLevel) != 1) || (waterLevel == 1))) && (1 == systemActive)) && (\old(pumpRunning) == 0)) [2024-11-02 12:24:03,884 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:24:03,884 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:24:03,885 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:24:03,885 INFO L158 Benchmark]: Toolchain (without parser) took 3461.35ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 85.5MB in the beginning and 56.2MB in the end (delta: 29.3MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. [2024-11-02 12:24:03,885 INFO L158 Benchmark]: CDTParser took 3.62ms. Allocated memory is still 123.7MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:24:03,886 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.05ms. Allocated memory is still 123.7MB. Free memory was 85.2MB in the beginning and 64.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-02 12:24:03,886 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.88ms. Allocated memory is still 123.7MB. Free memory was 64.5MB in the beginning and 62.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:24:03,887 INFO L158 Benchmark]: Boogie Preprocessor took 25.46ms. Allocated memory is still 123.7MB. Free memory was 62.5MB in the beginning and 60.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:24:03,887 INFO L158 Benchmark]: RCFGBuilder took 593.67ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 60.7MB in the beginning and 110.4MB in the end (delta: -49.7MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-11-02 12:24:03,887 INFO L158 Benchmark]: TraceAbstraction took 2119.53ms. Allocated memory is still 159.4MB. Free memory was 109.4MB in the beginning and 63.6MB in the end (delta: 45.8MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2024-11-02 12:24:03,888 INFO L158 Benchmark]: Witness Printer took 143.60ms. Allocated memory is still 159.4MB. Free memory was 63.6MB in the beginning and 56.2MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-02 12:24:03,889 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.62ms. Allocated memory is still 123.7MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.05ms. Allocated memory is still 123.7MB. Free memory was 85.2MB in the beginning and 64.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.88ms. Allocated memory is still 123.7MB. Free memory was 64.5MB in the beginning and 62.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.46ms. Allocated memory is still 123.7MB. Free memory was 62.5MB in the beginning and 60.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 593.67ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 60.7MB in the beginning and 110.4MB in the end (delta: -49.7MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2119.53ms. Allocated memory is still 159.4MB. Free memory was 109.4MB in the beginning and 63.6MB in the end (delta: 45.8MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. * Witness Printer took 143.60ms. Allocated memory is still 159.4MB. Free memory was 63.6MB in the beginning and 56.2MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] - GenericResultAtLocation [Line: 135]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [135] - GenericResultAtLocation [Line: 501]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [501] - GenericResultAtLocation [Line: 510]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [510] - GenericResultAtLocation [Line: 537]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [537] - GenericResultAtLocation [Line: 639]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [639] - GenericResultAtLocation [Line: 791]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [791] - GenericResultAtLocation [Line: 856]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [856] * 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: 506]: 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, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 242 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110 IncrementalHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 147 mSDtfsCounter, 110 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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: 550]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 735]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 801]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 645]: Location Invariant Derived location invariant: ((((pumpRunning == 0) && ((\old(waterLevel) != 1) || (waterLevel == 1))) && (1 == systemActive)) && (\old(pumpRunning) == 0)) - InvariantResult [Line: 802]: Loop Invariant Derived loop invariant: (((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) - ProcedureContractResult [Line: 82]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((pumpRunning == 0) && (1 == systemActive)) Ensures: (((pumpRunning == 0) && (1 == systemActive)) && (((((waterLevel == \old(waterLevel)) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 645]: Procedure Contract for timeShift Derived contract for procedure timeShift. Requires: ((pumpRunning == 0) && (1 == systemActive)) Ensures: (((((pumpRunning == 0) && ((\old(waterLevel) != 1) || (waterLevel == 1))) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && ((((methaneLevelCritical == \old(methaneLevelCritical)) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 540]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((methaneLevelCritical == \old(methaneLevelCritical)) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 70]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: ((pumpRunning == 0) && (1 == systemActive)) Ensures: (((pumpRunning == 0) && (1 == systemActive)) && (((((methaneLevelCritical == \old(methaneLevelCritical)) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 669]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: ((pumpRunning == 0) && (1 == systemActive)) Ensures: (((pumpRunning == 0) && (1 == systemActive)) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 735]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: 0 Ensures: (0 && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:24:03,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b96dc4-cc7f-478d-890a-18cf731633bf/bin/utaipan-verify-DbMuA5NWw2/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