./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ec66100f9e2ac4db263cd9becb832e73074b4f7ebe73780c502623dad07d2b6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:19:46,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:19:46,318 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 08:19:46,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:19:46,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:19:46,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:19:46,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:19:46,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:19:46,351 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:19:46,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:19:46,352 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:19:46,353 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:19:46,353 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:19:46,354 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:19:46,354 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:19:46,355 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:19:46,355 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:19:46,355 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:19:46,356 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:19:46,357 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:19:46,357 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:19:46,360 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:19:46,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:19:46,362 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:19:46,362 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:19:46,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:19:46,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:19:46,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:19:46,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:19:46,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:19:46,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:19:46,365 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:19:46,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:19:46,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:19:46,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:19:46,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:19:46,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:19:46,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:19:46,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:19:46,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:19:46,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:19:46,367 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:19:46,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:19:46,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:19:46,368 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:19:46,368 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:19:46,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:19:46,368 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_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ec66100f9e2ac4db263cd9becb832e73074b4f7ebe73780c502623dad07d2b6 [2023-12-02 08:19:46,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:19:46,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:19:46,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:19:46,616 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:19:46,616 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:19:46,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec4_product16.cil.c [2023-12-02 08:19:49,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:19:49,530 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:19:49,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/sv-benchmarks/c/product-lines/minepump_spec4_product16.cil.c [2023-12-02 08:19:49,540 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/data/7da47f75a/925c4ddc37404b3b937b13ba55bfd07b/FLAGc7089d590 [2023-12-02 08:19:49,550 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/data/7da47f75a/925c4ddc37404b3b937b13ba55bfd07b [2023-12-02 08:19:49,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:19:49,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:19:49,556 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:19:49,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:19:49,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:19:49,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:49,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b58231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49, skipping insertion in model container [2023-12-02 08:19:49,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:49,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:19:49,824 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/sv-benchmarks/c/product-lines/minepump_spec4_product16.cil.c[14184,14197] [2023-12-02 08:19:49,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:19:49,853 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:19:49,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] [2023-12-02 08:19:49,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [87] [2023-12-02 08:19:49,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [453] [2023-12-02 08:19:49,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [539] [2023-12-02 08:19:49,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [638] [2023-12-02 08:19:49,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [647] [2023-12-02 08:19:49,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [826] [2023-12-02 08:19:49,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [852] [2023-12-02 08:19:49,913 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/sv-benchmarks/c/product-lines/minepump_spec4_product16.cil.c[14184,14197] [2023-12-02 08:19:49,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:19:49,938 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:19:49,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49 WrapperNode [2023-12-02 08:19:49,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:19:49,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:19:49,940 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:19:49,940 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:19:49,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:49,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:49,978 INFO L138 Inliner]: procedures = 53, calls = 97, calls flagged for inlining = 21, calls inlined = 17, statements flattened = 166 [2023-12-02 08:19:49,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:19:49,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:19:49,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:19:49,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:19:49,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:49,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:49,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:49,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:49,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:50,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:50,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:50,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:50,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:19:50,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:19:50,010 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:19:50,010 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:19:50,011 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (1/1) ... [2023-12-02 08:19:50,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:19:50,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:19:50,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:19:50,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:19:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:19:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 08:19:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 08:19:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 08:19:50,079 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 08:19:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 08:19:50,079 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 08:19:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-12-02 08:19:50,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-12-02 08:19:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-12-02 08:19:50,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-12-02 08:19:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-02 08:19:50,080 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-02 08:19:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 08:19:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 08:19:50,080 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 08:19:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:19:50,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:19:50,155 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:19:50,158 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:19:50,370 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:19:50,443 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:19:50,443 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 08:19:50,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:19:50 BoogieIcfgContainer [2023-12-02 08:19:50,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:19:50,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:19:50,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:19:50,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:19:50,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:19:49" (1/3) ... [2023-12-02 08:19:50,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1007206b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:19:50, skipping insertion in model container [2023-12-02 08:19:50,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:49" (2/3) ... [2023-12-02 08:19:50,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1007206b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:19:50, skipping insertion in model container [2023-12-02 08:19:50,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:19:50" (3/3) ... [2023-12-02 08:19:50,454 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product16.cil.c [2023-12-02 08:19:50,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:19:50,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 08:19:50,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:19:50,515 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d14d96c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:19:50,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 08:19:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 43 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 08:19:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 08:19:50,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:50,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:50,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:50,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash 927517862, now seen corresponding path program 1 times [2023-12-02 08:19:50,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:19:50,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970578754] [2023-12-02 08:19:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:50,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:19:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:19:50,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:19:50,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970578754] [2023-12-02 08:19:50,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970578754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:50,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:50,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 08:19:50,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746253685] [2023-12-02 08:19:50,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:50,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 08:19:50,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:19:50,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 08:19:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:19:50,727 INFO L87 Difference]: Start difference. First operand has 56 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 43 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 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) [2023-12-02 08:19:50,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:50,784 INFO L93 Difference]: Finished difference Result 110 states and 149 transitions. [2023-12-02 08:19:50,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 08:19:50,786 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 [2023-12-02 08:19:50,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:50,793 INFO L225 Difference]: With dead ends: 110 [2023-12-02 08:19:50,793 INFO L226 Difference]: Without dead ends: 51 [2023-12-02 08:19:50,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:19:50,799 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:50,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:19:50,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-02 08:19:50,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-02 08:19:50,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 39 states have internal predecessors, (44), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 08:19:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2023-12-02 08:19:50,832 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 12 [2023-12-02 08:19:50,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:50,832 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2023-12-02 08:19:50,833 INFO L496 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) [2023-12-02 08:19:50,833 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-12-02 08:19:50,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 08:19:50,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:50,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:50,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 08:19:50,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:50,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:50,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1376274795, now seen corresponding path program 1 times [2023-12-02 08:19:50,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:19:50,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750435461] [2023-12-02 08:19:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:50,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:19:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:19:50,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:19:50,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750435461] [2023-12-02 08:19:50,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750435461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:50,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:50,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:19:50,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330555505] [2023-12-02 08:19:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:50,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:19:50,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:19:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:19:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:19:50,927 INFO L87 Difference]: Start difference. First operand 51 states and 65 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) [2023-12-02 08:19:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:50,960 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2023-12-02 08:19:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:19:50,961 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 [2023-12-02 08:19:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:50,962 INFO L225 Difference]: With dead ends: 74 [2023-12-02 08:19:50,962 INFO L226 Difference]: Without dead ends: 43 [2023-12-02 08:19:50,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:19:50,964 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:50,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 66 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:19:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-02 08:19:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-02 08:19:50,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 08:19:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2023-12-02 08:19:50,974 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 13 [2023-12-02 08:19:50,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:50,974 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2023-12-02 08:19:50,975 INFO L496 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) [2023-12-02 08:19:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2023-12-02 08:19:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 08:19:50,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:50,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:50,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 08:19:50,976 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:50,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:50,977 INFO L85 PathProgramCache]: Analyzing trace with hash 689851195, now seen corresponding path program 1 times [2023-12-02 08:19:50,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:19:50,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822495659] [2023-12-02 08:19:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:50,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:19:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:19:51,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:19:51,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822495659] [2023-12-02 08:19:51,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822495659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:51,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:51,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:19:51,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618193060] [2023-12-02 08:19:51,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:51,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:19:51,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:19:51,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:19:51,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:19:51,055 INFO L87 Difference]: Start difference. First operand 43 states and 54 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, (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) [2023-12-02 08:19:51,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:51,110 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2023-12-02 08:19:51,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:19:51,111 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, (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 16 [2023-12-02 08:19:51,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:51,113 INFO L225 Difference]: With dead ends: 125 [2023-12-02 08:19:51,113 INFO L226 Difference]: Without dead ends: 84 [2023-12-02 08:19:51,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:19:51,115 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 48 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:51,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 85 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:19:51,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-02 08:19:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2023-12-02 08:19:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 63 states have internal predecessors, (71), 16 states have call successors, (16), 12 states have call predecessors, (16), 12 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 08:19:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2023-12-02 08:19:51,135 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 16 [2023-12-02 08:19:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:51,136 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2023-12-02 08:19:51,136 INFO L496 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, (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) [2023-12-02 08:19:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2023-12-02 08:19:51,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 08:19:51,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:51,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:51,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 08:19:51,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:51,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1457257187, now seen corresponding path program 1 times [2023-12-02 08:19:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:19:51,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225578862] [2023-12-02 08:19:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:19:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:19:51,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:19:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225578862] [2023-12-02 08:19:51,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225578862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:51,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:51,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:19:51,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130348300] [2023-12-02 08:19:51,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:51,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 08:19:51,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:19:51,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 08:19:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:19:51,314 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-12-02 08:19:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:51,417 INFO L93 Difference]: Finished difference Result 213 states and 276 transitions. [2023-12-02 08:19:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:19:51,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 19 [2023-12-02 08:19:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:51,420 INFO L225 Difference]: With dead ends: 213 [2023-12-02 08:19:51,420 INFO L226 Difference]: Without dead ends: 134 [2023-12-02 08:19:51,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:19:51,423 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:51,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 117 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:19:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-02 08:19:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 129. [2023-12-02 08:19:51,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 88 states have (on average 1.3181818181818181) internal successors, (116), 101 states have internal predecessors, (116), 22 states have call successors, (22), 18 states have call predecessors, (22), 18 states have return successors, (22), 17 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 08:19:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 160 transitions. [2023-12-02 08:19:51,445 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 160 transitions. Word has length 19 [2023-12-02 08:19:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:51,446 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 160 transitions. [2023-12-02 08:19:51,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-12-02 08:19:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 160 transitions. [2023-12-02 08:19:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 08:19:51,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:51,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:51,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 08:19:51,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:51,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:51,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2032349906, now seen corresponding path program 1 times [2023-12-02 08:19:51,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:19:51,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867935433] [2023-12-02 08:19:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:19:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:19:51,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:19:51,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867935433] [2023-12-02 08:19:51,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867935433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:51,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:51,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 08:19:51,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076033218] [2023-12-02 08:19:51,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:51,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 08:19:51,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:19:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 08:19:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-02 08:19:51,638 INFO L87 Difference]: Start difference. First operand 129 states and 160 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:19:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:51,848 INFO L93 Difference]: Finished difference Result 269 states and 341 transitions. [2023-12-02 08:19:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 08:19:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 22 [2023-12-02 08:19:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:51,851 INFO L225 Difference]: With dead ends: 269 [2023-12-02 08:19:51,851 INFO L226 Difference]: Without dead ends: 190 [2023-12-02 08:19:51,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-12-02 08:19:51,853 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 93 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:51,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 158 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:19:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-02 08:19:51,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 183. [2023-12-02 08:19:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 126 states have (on average 1.2936507936507937) internal successors, (163), 143 states have internal predecessors, (163), 30 states have call successors, (30), 26 states have call predecessors, (30), 26 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 08:19:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 223 transitions. [2023-12-02 08:19:51,886 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 223 transitions. Word has length 22 [2023-12-02 08:19:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:51,886 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 223 transitions. [2023-12-02 08:19:51,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:19:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 223 transitions. [2023-12-02 08:19:51,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 08:19:51,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:51,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:51,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 08:19:51,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:51,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:51,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1023405606, now seen corresponding path program 1 times [2023-12-02 08:19:51,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:19:51,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738330398] [2023-12-02 08:19:51,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:51,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:19:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:19:52,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:19:52,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738330398] [2023-12-02 08:19:52,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738330398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:19:52,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338342228] [2023-12-02 08:19:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:52,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:19:52,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:19:52,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:19:52,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 08:19:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:52,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 08:19:52,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 08:19:53,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:19:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:19:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338342228] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:19:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1653053654] [2023-12-02 08:19:53,879 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-12-02 08:19:53,879 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:19:53,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:19:53,886 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:19:53,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:19:56,558 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 22 for LOIs [2023-12-02 08:19:56,563 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 43 for LOIs [2023-12-02 08:19:56,765 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 08:19:58,875 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2093#(and (<= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483647) (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 0 (+ |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 2147483648)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~6#1| 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (or (= |old(~waterLevel~0)| 1) (= |old(~waterLevel~0)| 0)) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= 0 ~systemActive~0) (= ~waterLevel~0 0) (exists ((|v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_test_~tmp___0~1#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_test_~tmp~7#1_BEFORE_CALL_15| Int) (|v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_15| Int)) (and (= |v_ULTIMATE.start_test_~tmp___0~1#1_BEFORE_CALL_9| 0) (<= 0 (+ |v_ULTIMATE.start_test_~tmp~7#1_BEFORE_CALL_15| 2147483648)) (<= |v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_15| 3) (<= |v_ULTIMATE.start_test_~tmp~7#1_BEFORE_CALL_15| 2147483647) (not (= |v_ULTIMATE.start_test_~tmp~7#1_BEFORE_CALL_15| 0)) (= |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_9| 0) (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_9| 0))))' at error location [2023-12-02 08:19:58,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 08:19:58,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 08:19:58,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 34 [2023-12-02 08:19:58,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876699687] [2023-12-02 08:19:58,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 08:19:58,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 08:19:58,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:19:58,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 08:19:58,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2800, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 08:19:58,879 INFO L87 Difference]: Start difference. First operand 183 states and 223 transitions. Second operand has 35 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 27 states have internal predecessors, (79), 8 states have call successors, (12), 11 states have call predecessors, (12), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-02 08:19:59,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:59,197 INFO L93 Difference]: Finished difference Result 238 states and 295 transitions. [2023-12-02 08:19:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 08:19:59,198 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 27 states have internal predecessors, (79), 8 states have call successors, (12), 11 states have call predecessors, (12), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 40 [2023-12-02 08:19:59,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:59,198 INFO L225 Difference]: With dead ends: 238 [2023-12-02 08:19:59,198 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 08:19:59,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=539, Invalid=3243, Unknown=0, NotChecked=0, Total=3782 [2023-12-02 08:19:59,202 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 165 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:59,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 283 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 08:19:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 08:19:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 08:19:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:19:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 08:19:59,203 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2023-12-02 08:19:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:59,203 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 08:19:59,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 27 states have internal predecessors, (79), 8 states have call successors, (12), 11 states have call predecessors, (12), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-02 08:19:59,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 08:19:59,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 08:19:59,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 08:19:59,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 08:19:59,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:19:59,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 08:19:59,850 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 739 746) no Hoare annotation was computed. [2023-12-02 08:19:59,850 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 739 746) the Hoare annotation is: true [2023-12-02 08:19:59,850 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 486 497) the Hoare annotation is: true [2023-12-02 08:19:59,850 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 486 497) no Hoare annotation was computed. [2023-12-02 08:19:59,850 INFO L899 garLoopResultBuilder]: For program point L643(line 643) no Hoare annotation was computed. [2023-12-02 08:19:59,850 INFO L899 garLoopResultBuilder]: For program point L668-1(lines 668 674) no Hoare annotation was computed. [2023-12-02 08:19:59,850 INFO L899 garLoopResultBuilder]: For program point L697(lines 697 705) no Hoare annotation was computed. [2023-12-02 08:19:59,851 INFO L899 garLoopResultBuilder]: For program point L693(lines 693 710) no Hoare annotation was computed. [2023-12-02 08:19:59,851 INFO L899 garLoopResultBuilder]: For program point L661-1(lines 660 679) no Hoare annotation was computed. [2023-12-02 08:19:59,851 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 657 680) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0))) (and (or .cse0 (and .cse1 (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (and .cse1 (= ~waterLevel~0 1))))) [2023-12-02 08:19:59,851 INFO L899 garLoopResultBuilder]: For program point L839(lines 839 845) no Hoare annotation was computed. [2023-12-02 08:19:59,851 INFO L899 garLoopResultBuilder]: For program point L835(lines 835 848) no Hoare annotation was computed. [2023-12-02 08:19:59,851 INFO L899 garLoopResultBuilder]: For program point L835-1(lines 827 851) no Hoare annotation was computed. [2023-12-02 08:19:59,851 INFO L895 garLoopResultBuilder]: At program point L703(line 703) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1))))) [2023-12-02 08:19:59,851 INFO L895 garLoopResultBuilder]: At program point L699(line 699) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1))))) [2023-12-02 08:19:59,852 INFO L895 garLoopResultBuilder]: At program point L695(line 695) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1))))) [2023-12-02 08:19:59,852 INFO L899 garLoopResultBuilder]: For program point L695-1(line 695) no Hoare annotation was computed. [2023-12-02 08:19:59,852 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 657 680) no Hoare annotation was computed. [2023-12-02 08:19:59,852 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 643) no Hoare annotation was computed. [2023-12-02 08:19:59,852 INFO L895 garLoopResultBuilder]: At program point L708(line 708) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0))) (and (or .cse0 (and .cse1 (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (and .cse1 (= ~waterLevel~0 1))))) [2023-12-02 08:19:59,852 INFO L899 garLoopResultBuilder]: For program point L708-1(lines 689 713) no Hoare annotation was computed. [2023-12-02 08:19:59,852 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 542 571) no Hoare annotation was computed. [2023-12-02 08:19:59,853 INFO L899 garLoopResultBuilder]: For program point L567(lines 542 571) no Hoare annotation was computed. [2023-12-02 08:19:59,853 INFO L899 garLoopResultBuilder]: For program point L563(line 563) no Hoare annotation was computed. [2023-12-02 08:19:59,853 INFO L899 garLoopResultBuilder]: For program point L556(lines 556 560) no Hoare annotation was computed. [2023-12-02 08:19:59,853 INFO L902 garLoopResultBuilder]: At program point L556-1(lines 556 560) the Hoare annotation is: true [2023-12-02 08:19:59,853 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 542 571) the Hoare annotation is: true [2023-12-02 08:19:59,853 INFO L902 garLoopResultBuilder]: At program point L552-2(lines 552 566) the Hoare annotation is: true [2023-12-02 08:19:59,853 INFO L902 garLoopResultBuilder]: At program point L548(line 548) the Hoare annotation is: true [2023-12-02 08:19:59,853 INFO L899 garLoopResultBuilder]: For program point L548-1(line 548) no Hoare annotation was computed. [2023-12-02 08:19:59,854 INFO L899 garLoopResultBuilder]: For program point L916(lines 853 920) no Hoare annotation was computed. [2023-12-02 08:19:59,854 INFO L899 garLoopResultBuilder]: For program point L883(lines 883 889) no Hoare annotation was computed. [2023-12-02 08:19:59,854 INFO L899 garLoopResultBuilder]: For program point L883-1(lines 883 889) no Hoare annotation was computed. [2023-12-02 08:19:59,854 INFO L895 garLoopResultBuilder]: At program point L875(line 875) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse0 (= 2 ~waterLevel~0) .cse1))) [2023-12-02 08:19:59,854 INFO L895 garLoopResultBuilder]: At program point L809(line 809) the Hoare annotation is: false [2023-12-02 08:19:59,854 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 08:19:59,854 INFO L895 garLoopResultBuilder]: At program point L913(lines 862 914) the Hoare annotation is: false [2023-12-02 08:19:59,854 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 08:19:59,854 INFO L899 garLoopResultBuilder]: For program point L901(lines 901 907) no Hoare annotation was computed. [2023-12-02 08:19:59,854 INFO L895 garLoopResultBuilder]: At program point L901-2(lines 893 908) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse0 (= 2 ~waterLevel~0) .cse1))) [2023-12-02 08:19:59,855 INFO L899 garLoopResultBuilder]: For program point L864(lines 863 912) no Hoare annotation was computed. [2023-12-02 08:19:59,855 INFO L899 garLoopResultBuilder]: For program point L893(lines 893 908) no Hoare annotation was computed. [2023-12-02 08:19:59,855 INFO L895 garLoopResultBuilder]: At program point L885(line 885) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse0 (= 2 ~waterLevel~0) .cse1))) [2023-12-02 08:19:59,855 INFO L899 garLoopResultBuilder]: For program point L625(lines 625 632) no Hoare annotation was computed. [2023-12-02 08:19:59,855 INFO L899 garLoopResultBuilder]: For program point L625-2(lines 625 632) no Hoare annotation was computed. [2023-12-02 08:19:59,855 INFO L895 garLoopResultBuilder]: At program point L910(lines 863 912) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse0 (= 2 ~waterLevel~0) .cse1))) [2023-12-02 08:19:59,855 INFO L899 garLoopResultBuilder]: For program point L873(lines 873 879) no Hoare annotation was computed. [2023-12-02 08:19:59,855 INFO L899 garLoopResultBuilder]: For program point L873-1(lines 873 879) no Hoare annotation was computed. [2023-12-02 08:19:59,855 INFO L899 garLoopResultBuilder]: For program point L807(lines 807 813) no Hoare annotation was computed. [2023-12-02 08:19:59,855 INFO L899 garLoopResultBuilder]: For program point L807-1(lines 807 813) no Hoare annotation was computed. [2023-12-02 08:19:59,855 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 474 485) no Hoare annotation was computed. [2023-12-02 08:19:59,855 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 474 485) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0)))) (and (or .cse0 (= 2 ~waterLevel~0) (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)))) [2023-12-02 08:19:59,856 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 681 687) no Hoare annotation was computed. [2023-12-02 08:19:59,856 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryFINAL(lines 681 687) the Hoare annotation is: true [2023-12-02 08:19:59,856 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 747 757) no Hoare annotation was computed. [2023-12-02 08:19:59,856 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 747 757) the Hoare annotation is: true [2023-12-02 08:19:59,858 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-02 08:19:59,859 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 08:19:59,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:19:59 BoogieIcfgContainer [2023-12-02 08:19:59,869 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 08:19:59,869 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 08:19:59,870 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 08:19:59,870 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 08:19:59,870 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:19:50" (3/4) ... [2023-12-02 08:19:59,872 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 08:19:59,875 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-12-02 08:19:59,875 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 08:19:59,875 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 08:19:59,875 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 08:19:59,876 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 08:19:59,876 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2023-12-02 08:19:59,876 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2023-12-02 08:19:59,883 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-12-02 08:19:59,884 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-12-02 08:19:59,884 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 08:19:59,885 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 08:19:59,885 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 08:19:59,917 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) && ((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || ((pumpRunning == 0) && (waterLevel == 1)))) [2023-12-02 08:19:59,947 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) && ((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || ((pumpRunning == 0) && (waterLevel == 1)))) [2023-12-02 08:19:59,997 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 08:19:59,997 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 08:19:59,997 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 08:19:59,998 INFO L158 Benchmark]: Toolchain (without parser) took 10444.02ms. Allocated memory was 169.9MB in the beginning and 465.6MB in the end (delta: 295.7MB). Free memory was 132.1MB in the beginning and 268.0MB in the end (delta: -135.9MB). Peak memory consumption was 161.8MB. Max. memory is 16.1GB. [2023-12-02 08:19:59,999 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 71.9MB in the beginning and 71.9MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:19:59,999 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.44ms. Allocated memory is still 169.9MB. Free memory was 132.1MB in the beginning and 113.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 08:20:00,000 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.22ms. Allocated memory is still 169.9MB. Free memory was 113.1MB in the beginning and 111.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 08:20:00,000 INFO L158 Benchmark]: Boogie Preprocessor took 29.45ms. Allocated memory is still 169.9MB. Free memory was 111.1MB in the beginning and 109.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 08:20:00,000 INFO L158 Benchmark]: RCFGBuilder took 435.38ms. Allocated memory is still 169.9MB. Free memory was 109.5MB in the beginning and 133.0MB in the end (delta: -23.5MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-12-02 08:20:00,001 INFO L158 Benchmark]: TraceAbstraction took 9421.33ms. Allocated memory was 169.9MB in the beginning and 465.6MB in the end (delta: 295.7MB). Free memory was 132.0MB in the beginning and 274.3MB in the end (delta: -142.3MB). Peak memory consumption was 154.3MB. Max. memory is 16.1GB. [2023-12-02 08:20:00,001 INFO L158 Benchmark]: Witness Printer took 128.20ms. Allocated memory is still 465.6MB. Free memory was 274.3MB in the beginning and 268.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 08:20:00,003 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 71.9MB in the beginning and 71.9MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.44ms. Allocated memory is still 169.9MB. Free memory was 132.1MB in the beginning and 113.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.22ms. Allocated memory is still 169.9MB. Free memory was 113.1MB in the beginning and 111.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.45ms. Allocated memory is still 169.9MB. Free memory was 111.1MB in the beginning and 109.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 435.38ms. Allocated memory is still 169.9MB. Free memory was 109.5MB in the beginning and 133.0MB in the end (delta: -23.5MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * TraceAbstraction took 9421.33ms. Allocated memory was 169.9MB in the beginning and 465.6MB in the end (delta: 295.7MB). Free memory was 132.0MB in the beginning and 274.3MB in the end (delta: -142.3MB). Peak memory consumption was 154.3MB. Max. memory is 16.1GB. * Witness Printer took 128.20ms. Allocated memory is still 465.6MB. Free memory was 274.3MB in the beginning and 268.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] - GenericResultAtLocation [Line: 87]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [87] - GenericResultAtLocation [Line: 453]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [453] - GenericResultAtLocation [Line: 539]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [539] - GenericResultAtLocation [Line: 638]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [638] - GenericResultAtLocation [Line: 647]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [647] - GenericResultAtLocation [Line: 826]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [826] - GenericResultAtLocation [Line: 852]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [852] * 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: 643]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.4s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 359 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 352 mSDsluCounter, 764 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 513 mSDsCounter, 142 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 527 IncrementalHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 142 mSolverCounterUnsat, 251 mSDtfsCounter, 527 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1504 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=5, InterpolantAutomatonStates: 31, 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, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 180 PreInvPairs, 202 NumberOfFragments, 242 HoareAnnotationTreeSize, 180 FomulaSimplifications, 408 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 886 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 1345 SizeOfPredicates, 7 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 3/48 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: 862]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 747]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 863]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0) && (splverifierCounter == 0)) && (waterLevel == 1)) || (((pumpRunning == 0) && (2 == waterLevel)) && (splverifierCounter == 0))) - InvariantResult [Line: 657]: Loop Invariant Derived loop invariant: (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) && ((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || ((pumpRunning == 0) && (waterLevel == 1)))) - InvariantResult [Line: 552]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-02 08:20:00,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0202c495-7342-48d0-8eae-4d1628ac145c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE