./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product60.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product60.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fa225959be52b1defd5d055d32ae3a8dd944c37a01adb589e2f547028e60f67 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:53:58,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:53:59,031 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:53:59,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:53:59,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:53:59,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:53:59,060 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:53:59,061 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:53:59,061 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:53:59,062 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:53:59,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:53:59,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:53:59,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:53:59,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:53:59,065 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:53:59,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:53:59,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:53:59,066 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:53:59,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:53:59,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:53:59,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:53:59,068 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:53:59,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:53:59,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:53:59,069 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:53:59,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:53:59,070 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:53:59,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:53:59,071 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:53:59,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:53:59,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:53:59,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:53:59,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:53:59,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:53:59,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:53:59,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:53:59,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:53:59,073 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:53:59,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:53:59,073 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:53:59,073 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:53:59,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:53:59,074 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fa225959be52b1defd5d055d32ae3a8dd944c37a01adb589e2f547028e60f67 [2023-11-29 00:53:59,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:53:59,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:53:59,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:53:59,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:53:59,317 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:53:59,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/minepump_spec1_product60.cil.c [2023-11-29 00:54:02,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:54:02,350 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:54:02,351 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/sv-benchmarks/c/product-lines/minepump_spec1_product60.cil.c [2023-11-29 00:54:02,367 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/data/1cfbca10b/674f637a3f9940fba30c2560a080397b/FLAGfa0a6957f [2023-11-29 00:54:02,382 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/data/1cfbca10b/674f637a3f9940fba30c2560a080397b [2023-11-29 00:54:02,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:54:02,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:54:02,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:54:02,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:54:02,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:54:02,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b833fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02, skipping insertion in model container [2023-11-29 00:54:02,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:54:02,650 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_5ca276ad-2648-4d26-b430-e531ed88c746/sv-benchmarks/c/product-lines/minepump_spec1_product60.cil.c[14569,14582] [2023-11-29 00:54:02,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:54:02,687 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:54:02,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] [2023-11-29 00:54:02,698 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [153] [2023-11-29 00:54:02,698 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [262] [2023-11-29 00:54:02,698 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [290] [2023-11-29 00:54:02,698 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [656] [2023-11-29 00:54:02,699 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [665] [2023-11-29 00:54:02,699 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [736] [2023-11-29 00:54:02,699 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [976] [2023-11-29 00:54:02,752 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_5ca276ad-2648-4d26-b430-e531ed88c746/sv-benchmarks/c/product-lines/minepump_spec1_product60.cil.c[14569,14582] [2023-11-29 00:54:02,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:54:02,784 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:54:02,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02 WrapperNode [2023-11-29 00:54:02,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:54:02,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:54:02,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:54:02,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:54:02,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,834 INFO L138 Inliner]: procedures = 58, calls = 103, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 221 [2023-11-29 00:54:02,835 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:54:02,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:54:02,836 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:54:02,836 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:54:02,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,865 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:54:02,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:54:02,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:54:02,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:54:02,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:54:02,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (1/1) ... [2023-11-29 00:54:02,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:54:02,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:54:02,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:54:02,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:54:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:54:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-29 00:54:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-29 00:54:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-29 00:54:02,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-29 00:54:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-29 00:54:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-29 00:54:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-29 00:54:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-29 00:54:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-29 00:54:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-29 00:54:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-29 00:54:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-29 00:54:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-11-29 00:54:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-11-29 00:54:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:54:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-29 00:54:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-29 00:54:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:54:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:54:03,034 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:54:03,037 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:54:03,289 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:54:03,354 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:54:03,354 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:54:03,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:54:03 BoogieIcfgContainer [2023-11-29 00:54:03,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:54:03,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:54:03,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:54:03,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:54:03,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:54:02" (1/3) ... [2023-11-29 00:54:03,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bf6385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:54:03, skipping insertion in model container [2023-11-29 00:54:03,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:54:02" (2/3) ... [2023-11-29 00:54:03,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bf6385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:54:03, skipping insertion in model container [2023-11-29 00:54:03,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:54:03" (3/3) ... [2023-11-29 00:54:03,363 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product60.cil.c [2023-11-29 00:54:03,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:54:03,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:54:03,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:54:03,427 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=PETRI_NET, 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;@6d29d463, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:54:03,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:54:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 53 states have (on average 1.528301886792453) internal successors, (81), 62 states have internal predecessors, (81), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-29 00:54:03,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:54:03,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:03,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:03,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:03,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1616753094, now seen corresponding path program 1 times [2023-11-29 00:54:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:03,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738232679] [2023-11-29 00:54:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:03,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:03,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:54:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:54:03,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:03,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738232679] [2023-11-29 00:54:03,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738232679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:03,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:03,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:54:03,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095854983] [2023-11-29 00:54:03,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:03,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:54:03,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:03,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:54:03,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:54:03,672 INFO L87 Difference]: Start difference. First operand has 77 states, 53 states have (on average 1.528301886792453) internal successors, (81), 62 states have internal predecessors, (81), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:54:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:03,730 INFO L93 Difference]: Finished difference Result 152 states and 219 transitions. [2023-11-29 00:54:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:54:03,732 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-29 00:54:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:03,742 INFO L225 Difference]: With dead ends: 152 [2023-11-29 00:54:03,742 INFO L226 Difference]: Without dead ends: 72 [2023-11-29 00:54:03,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:54:03,749 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:03,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:54:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-29 00:54:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-29 00:54:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.42) internal successors, (71), 58 states have internal predecessors, (71), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 00:54:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2023-11-29 00:54:03,796 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 16 [2023-11-29 00:54:03,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:03,796 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2023-11-29 00:54:03,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:54:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2023-11-29 00:54:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 00:54:03,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:03,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:03,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:54:03,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:03,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1506062791, now seen corresponding path program 1 times [2023-11-29 00:54:03,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:03,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833514589] [2023-11-29 00:54:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:03,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:03,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 00:54:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:54:03,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:03,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833514589] [2023-11-29 00:54:03,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833514589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:03,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:03,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:54:03,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513387728] [2023-11-29 00:54:03,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:03,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:54:03,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:03,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:54:03,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:54:03,910 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:54:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:03,956 INFO L93 Difference]: Finished difference Result 114 states and 154 transitions. [2023-11-29 00:54:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:54:03,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-29 00:54:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:03,959 INFO L225 Difference]: With dead ends: 114 [2023-11-29 00:54:03,959 INFO L226 Difference]: Without dead ends: 64 [2023-11-29 00:54:03,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:54:03,961 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 14 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:03,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 130 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:54:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-29 00:54:03,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-29 00:54:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 53 states have internal predecessors, (65), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 00:54:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2023-11-29 00:54:03,973 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 17 [2023-11-29 00:54:03,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:03,974 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2023-11-29 00:54:03,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:54:03,974 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2023-11-29 00:54:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 00:54:03,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:03,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:03,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:54:03,976 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:03,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:03,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1095535619, now seen corresponding path program 1 times [2023-11-29 00:54:03,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:03,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572134378] [2023-11-29 00:54:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:03,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:54:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:54:04,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572134378] [2023-11-29 00:54:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572134378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:04,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:54:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516098539] [2023-11-29 00:54:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:04,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:54:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:54:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:54:04,055 INFO L87 Difference]: Start difference. First operand 64 states and 87 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:54:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:04,115 INFO L93 Difference]: Finished difference Result 188 states and 258 transitions. [2023-11-29 00:54:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:54:04,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-29 00:54:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:04,118 INFO L225 Difference]: With dead ends: 188 [2023-11-29 00:54:04,118 INFO L226 Difference]: Without dead ends: 126 [2023-11-29 00:54:04,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:54:04,120 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 81 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:04,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 153 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:54:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-29 00:54:04,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2023-11-29 00:54:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 86 states have (on average 1.4534883720930232) internal successors, (125), 101 states have internal predecessors, (125), 22 states have call successors, (22), 14 states have call predecessors, (22), 14 states have return successors, (22), 15 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 00:54:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2023-11-29 00:54:04,143 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 20 [2023-11-29 00:54:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:04,144 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2023-11-29 00:54:04,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-29 00:54:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2023-11-29 00:54:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 00:54:04,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:04,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:04,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:54:04,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:04,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:04,147 INFO L85 PathProgramCache]: Analyzing trace with hash -672055808, now seen corresponding path program 1 times [2023-11-29 00:54:04,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:04,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924732880] [2023-11-29 00:54:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:04,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:54:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:54:04,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924732880] [2023-11-29 00:54:04,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924732880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:04,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:04,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:54:04,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039827899] [2023-11-29 00:54:04,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:04,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:54:04,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:04,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:54:04,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:54:04,239 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:54:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:04,331 INFO L93 Difference]: Finished difference Result 324 states and 451 transitions. [2023-11-29 00:54:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:54:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-29 00:54:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:04,334 INFO L225 Difference]: With dead ends: 324 [2023-11-29 00:54:04,335 INFO L226 Difference]: Without dead ends: 203 [2023-11-29 00:54:04,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:54:04,338 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 62 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:04,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 187 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:54:04,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-29 00:54:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 198. [2023-11-29 00:54:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 141 states have (on average 1.3829787234042554) internal successors, (195), 158 states have internal predecessors, (195), 30 states have call successors, (30), 26 states have call predecessors, (30), 26 states have return successors, (38), 27 states have call predecessors, (38), 30 states have call successors, (38) [2023-11-29 00:54:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2023-11-29 00:54:04,366 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 23 [2023-11-29 00:54:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:04,366 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2023-11-29 00:54:04,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 00:54:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2023-11-29 00:54:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 00:54:04,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:04,369 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:04,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:54:04,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:04,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:04,370 INFO L85 PathProgramCache]: Analyzing trace with hash -943497671, now seen corresponding path program 1 times [2023-11-29 00:54:04,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:04,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112641217] [2023-11-29 00:54:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:04,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:54:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:54:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 00:54:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:54:04,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112641217] [2023-11-29 00:54:04,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112641217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:04,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:04,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:54:04,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904580182] [2023-11-29 00:54:04,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:04,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:54:04,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:04,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:54:04,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:54:04,489 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:54:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:04,682 INFO L93 Difference]: Finished difference Result 440 states and 599 transitions. [2023-11-29 00:54:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:54:04,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-11-29 00:54:04,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:04,686 INFO L225 Difference]: With dead ends: 440 [2023-11-29 00:54:04,686 INFO L226 Difference]: Without dead ends: 244 [2023-11-29 00:54:04,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:54:04,689 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 51 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:04,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 180 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:54:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-11-29 00:54:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 238. [2023-11-29 00:54:04,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 171 states have (on average 1.3508771929824561) internal successors, (231), 188 states have internal predecessors, (231), 34 states have call successors, (34), 26 states have call predecessors, (34), 32 states have return successors, (48), 35 states have call predecessors, (48), 34 states have call successors, (48) [2023-11-29 00:54:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 313 transitions. [2023-11-29 00:54:04,720 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 313 transitions. Word has length 38 [2023-11-29 00:54:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:04,721 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 313 transitions. [2023-11-29 00:54:04,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:54:04,721 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 313 transitions. [2023-11-29 00:54:04,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 00:54:04,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:04,723 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:04,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:54:04,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:04,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1761146121, now seen corresponding path program 1 times [2023-11-29 00:54:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:04,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673604882] [2023-11-29 00:54:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:54:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:54:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 00:54:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:54:04,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:04,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673604882] [2023-11-29 00:54:04,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673604882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:04,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:04,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:54:04,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723213088] [2023-11-29 00:54:04,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:04,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:54:04,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:54:04,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:54:04,819 INFO L87 Difference]: Start difference. First operand 238 states and 313 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:54:05,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:05,000 INFO L93 Difference]: Finished difference Result 490 states and 661 transitions. [2023-11-29 00:54:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:54:05,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-11-29 00:54:05,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:05,003 INFO L225 Difference]: With dead ends: 490 [2023-11-29 00:54:05,003 INFO L226 Difference]: Without dead ends: 254 [2023-11-29 00:54:05,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:54:05,006 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 56 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:05,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 181 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:54:05,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-29 00:54:05,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 242. [2023-11-29 00:54:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 175 states have (on average 1.3428571428571427) internal successors, (235), 192 states have internal predecessors, (235), 34 states have call successors, (34), 26 states have call predecessors, (34), 32 states have return successors, (48), 35 states have call predecessors, (48), 34 states have call successors, (48) [2023-11-29 00:54:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 317 transitions. [2023-11-29 00:54:05,031 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 317 transitions. Word has length 38 [2023-11-29 00:54:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:05,032 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 317 transitions. [2023-11-29 00:54:05,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:54:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 317 transitions. [2023-11-29 00:54:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 00:54:05,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:05,034 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:05,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:54:05,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:05,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:05,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1542291403, now seen corresponding path program 1 times [2023-11-29 00:54:05,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:05,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6559266] [2023-11-29 00:54:05,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:05,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:54:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:54:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 00:54:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:54:05,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:05,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6559266] [2023-11-29 00:54:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6559266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:05,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:54:05,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310980362] [2023-11-29 00:54:05,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:05,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:54:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:05,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:54:05,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:54:05,122 INFO L87 Difference]: Start difference. First operand 242 states and 317 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:54:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:05,477 INFO L93 Difference]: Finished difference Result 785 states and 1101 transitions. [2023-11-29 00:54:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:54:05,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2023-11-29 00:54:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:05,482 INFO L225 Difference]: With dead ends: 785 [2023-11-29 00:54:05,483 INFO L226 Difference]: Without dead ends: 545 [2023-11-29 00:54:05,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:54:05,485 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 183 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:05,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 261 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:54:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-11-29 00:54:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 537. [2023-11-29 00:54:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 386 states have (on average 1.33419689119171) internal successors, (515), 417 states have internal predecessors, (515), 80 states have call successors, (80), 71 states have call predecessors, (80), 70 states have return successors, (130), 74 states have call predecessors, (130), 80 states have call successors, (130) [2023-11-29 00:54:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 725 transitions. [2023-11-29 00:54:05,547 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 725 transitions. Word has length 38 [2023-11-29 00:54:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:05,547 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 725 transitions. [2023-11-29 00:54:05,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:54:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 725 transitions. [2023-11-29 00:54:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 00:54:05,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:05,551 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:05,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:54:05,551 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:05,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash 558304731, now seen corresponding path program 1 times [2023-11-29 00:54:05,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:05,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430856830] [2023-11-29 00:54:05,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:05,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 00:54:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 00:54:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:54:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 00:54:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:54:05,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:05,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430856830] [2023-11-29 00:54:05,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430856830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:05,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:05,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:54:05,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547877700] [2023-11-29 00:54:05,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:05,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:54:05,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:54:05,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:54:05,706 INFO L87 Difference]: Start difference. First operand 537 states and 725 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:54:06,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:06,415 INFO L93 Difference]: Finished difference Result 1811 states and 2533 transitions. [2023-11-29 00:54:06,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 00:54:06,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-11-29 00:54:06,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:06,450 INFO L225 Difference]: With dead ends: 1811 [2023-11-29 00:54:06,450 INFO L226 Difference]: Without dead ends: 1276 [2023-11-29 00:54:06,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2023-11-29 00:54:06,454 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 276 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:06,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 254 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:54:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2023-11-29 00:54:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1245. [2023-11-29 00:54:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 888 states have (on average 1.28490990990991) internal successors, (1141), 965 states have internal predecessors, (1141), 196 states have call successors, (196), 142 states have call predecessors, (196), 160 states have return successors, (352), 188 states have call predecessors, (352), 196 states have call successors, (352) [2023-11-29 00:54:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1689 transitions. [2023-11-29 00:54:06,583 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1689 transitions. Word has length 42 [2023-11-29 00:54:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:06,584 INFO L495 AbstractCegarLoop]: Abstraction has 1245 states and 1689 transitions. [2023-11-29 00:54:06,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:54:06,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1689 transitions. [2023-11-29 00:54:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 00:54:06,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:06,587 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:06,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:54:06,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:06,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2043931009, now seen corresponding path program 1 times [2023-11-29 00:54:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916812840] [2023-11-29 00:54:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:06,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 00:54:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:06,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 00:54:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 00:54:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:54:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 00:54:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:54:06,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916812840] [2023-11-29 00:54:06,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916812840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:54:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50280029] [2023-11-29 00:54:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:06,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:54:06,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:54:06,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:54:06,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:54:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:06,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:54:06,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:54:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:54:06,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:54:06,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50280029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:06,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:54:06,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-29 00:54:06,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145185862] [2023-11-29 00:54:06,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:06,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:54:06,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:06,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:54:06,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:54:06,988 INFO L87 Difference]: Start difference. First operand 1245 states and 1689 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 00:54:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:07,229 INFO L93 Difference]: Finished difference Result 2436 states and 3316 transitions. [2023-11-29 00:54:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:54:07,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2023-11-29 00:54:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:07,237 INFO L225 Difference]: With dead ends: 2436 [2023-11-29 00:54:07,237 INFO L226 Difference]: Without dead ends: 1193 [2023-11-29 00:54:07,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:54:07,241 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 62 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:07,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 413 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:54:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2023-11-29 00:54:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1193. [2023-11-29 00:54:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 850 states have (on average 1.2694117647058825) internal successors, (1079), 925 states have internal predecessors, (1079), 190 states have call successors, (190), 138 states have call predecessors, (190), 152 states have return successors, (314), 178 states have call predecessors, (314), 190 states have call successors, (314) [2023-11-29 00:54:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1583 transitions. [2023-11-29 00:54:07,311 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1583 transitions. Word has length 46 [2023-11-29 00:54:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:07,312 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1583 transitions. [2023-11-29 00:54:07,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 00:54:07,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1583 transitions. [2023-11-29 00:54:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 00:54:07,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:07,316 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:07,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:54:07,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 00:54:07,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:07,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:07,522 INFO L85 PathProgramCache]: Analyzing trace with hash -276738347, now seen corresponding path program 1 times [2023-11-29 00:54:07,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:07,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770557578] [2023-11-29 00:54:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:07,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:07,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 00:54:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:07,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 00:54:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 00:54:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:07,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:54:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:07,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 00:54:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:07,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 00:54:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 00:54:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:54:07,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770557578] [2023-11-29 00:54:07,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770557578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:07,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:07,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:54:07,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947838427] [2023-11-29 00:54:07,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:07,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:54:07,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:07,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:54:07,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:54:07,619 INFO L87 Difference]: Start difference. First operand 1193 states and 1583 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 00:54:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:08,157 INFO L93 Difference]: Finished difference Result 1968 states and 2593 transitions. [2023-11-29 00:54:08,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:54:08,157 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 70 [2023-11-29 00:54:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:08,163 INFO L225 Difference]: With dead ends: 1968 [2023-11-29 00:54:08,163 INFO L226 Difference]: Without dead ends: 777 [2023-11-29 00:54:08,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:54:08,168 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 358 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:08,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 128 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:54:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-11-29 00:54:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 763. [2023-11-29 00:54:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 545 states have (on average 1.2532110091743118) internal successors, (683), 593 states have internal predecessors, (683), 119 states have call successors, (119), 94 states have call predecessors, (119), 98 states have return successors, (181), 113 states have call predecessors, (181), 119 states have call successors, (181) [2023-11-29 00:54:08,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 983 transitions. [2023-11-29 00:54:08,235 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 983 transitions. Word has length 70 [2023-11-29 00:54:08,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:08,235 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 983 transitions. [2023-11-29 00:54:08,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 00:54:08,236 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 983 transitions. [2023-11-29 00:54:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 00:54:08,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:08,239 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:08,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:54:08,239 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:08,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 879516092, now seen corresponding path program 1 times [2023-11-29 00:54:08,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:08,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050723232] [2023-11-29 00:54:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:08,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 00:54:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:54:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 00:54:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:54:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 00:54:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 00:54:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 00:54:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:54:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 00:54:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:54:08,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050723232] [2023-11-29 00:54:08,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050723232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:54:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424892884] [2023-11-29 00:54:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:08,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:54:08,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:54:08,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:54:08,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:54:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:54:08,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:54:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:54:08,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:54:08,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424892884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:08,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:54:08,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 9 [2023-11-29 00:54:08,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441462733] [2023-11-29 00:54:08,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:08,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:54:08,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:08,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:54:08,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:54:08,594 INFO L87 Difference]: Start difference. First operand 763 states and 983 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 00:54:08,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:08,821 INFO L93 Difference]: Finished difference Result 2027 states and 2664 transitions. [2023-11-29 00:54:08,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:54:08,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 79 [2023-11-29 00:54:08,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:08,832 INFO L225 Difference]: With dead ends: 2027 [2023-11-29 00:54:08,832 INFO L226 Difference]: Without dead ends: 1266 [2023-11-29 00:54:08,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:54:08,837 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 103 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:08,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 321 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:54:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2023-11-29 00:54:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1137. [2023-11-29 00:54:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 813 states have (on average 1.2496924969249692) internal successors, (1016), 881 states have internal predecessors, (1016), 177 states have call successors, (177), 146 states have call predecessors, (177), 146 states have return successors, (271), 159 states have call predecessors, (271), 177 states have call successors, (271) [2023-11-29 00:54:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1464 transitions. [2023-11-29 00:54:08,974 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1464 transitions. Word has length 79 [2023-11-29 00:54:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:08,974 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1464 transitions. [2023-11-29 00:54:08,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 00:54:08,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1464 transitions. [2023-11-29 00:54:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 00:54:08,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:54:08,977 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:08,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:54:09,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 00:54:09,178 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:54:09,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:09,178 INFO L85 PathProgramCache]: Analyzing trace with hash 61867642, now seen corresponding path program 1 times [2023-11-29 00:54:09,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:09,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833000826] [2023-11-29 00:54:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:09,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 00:54:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:54:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 00:54:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:54:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 00:54:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 00:54:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 00:54:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:54:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 00:54:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 00:54:09,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:09,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833000826] [2023-11-29 00:54:09,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833000826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:54:09,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200420678] [2023-11-29 00:54:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:09,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:54:09,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:54:09,299 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:54:09,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:54:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:09,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:54:09,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:54:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 00:54:09,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:54:09,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200420678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:09,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:54:09,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 00:54:09,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651555651] [2023-11-29 00:54:09,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:09,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:54:09,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:09,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:54:09,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:54:09,420 INFO L87 Difference]: Start difference. First operand 1137 states and 1464 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 00:54:09,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:54:09,487 INFO L93 Difference]: Finished difference Result 1657 states and 2105 transitions. [2023-11-29 00:54:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:54:09,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2023-11-29 00:54:09,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:54:09,489 INFO L225 Difference]: With dead ends: 1657 [2023-11-29 00:54:09,489 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 00:54:09,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:54:09,493 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:54:09,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 184 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:54:09,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 00:54:09,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 00:54:09,494 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) [2023-11-29 00:54:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 00:54:09,495 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2023-11-29 00:54:09,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:54:09,495 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 00:54:09,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 00:54:09,495 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 00:54:09,495 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 00:54:09,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 00:54:09,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:54:09,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 00:54:09,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 00:54:12,133 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 851 858) no Hoare annotation was computed. [2023-11-29 00:54:12,133 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 851 858) the Hoare annotation is: (let ((.cse2 (< ~waterLevel~0 2)) (.cse3 (= 0 ~systemActive~0)) (.cse4 (< ~methaneLevelCritical~0 1)) (.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse5 (< ~waterLevel~0 1)) (.cse6 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse2 .cse3 .cse4) (or .cse0 .cse5 .cse6 .cse4) (or .cse0 .cse5 .cse6 .cse1))) [2023-11-29 00:54:12,133 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 766 772) no Hoare annotation was computed. [2023-11-29 00:54:12,134 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 766 772) the Hoare annotation is: true [2023-11-29 00:54:12,134 INFO L899 garLoopResultBuilder]: For program point L190-1(lines 186 197) no Hoare annotation was computed. [2023-11-29 00:54:12,134 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 186 197) the Hoare annotation is: (let ((.cse6 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) (.cse7 (< |old(~methaneLevelCritical~0)| 1)) (.cse4 (not (= 0 ~systemActive~0))) (.cse0 (not (= |old(~methaneLevelCritical~0)| 0))) (.cse1 (not (= ~pumpRunning~0 0))) (.cse2 (< ~waterLevel~0 1)) (.cse3 (= ~methaneLevelCritical~0 0)) (.cse5 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse2 .cse5 .cse6 .cse7) (or .cse1 .cse2 .cse6 .cse7 .cse4) (or .cse0 .cse3 .cse5 (< ~waterLevel~0 2)) (or .cse0 .cse1 .cse2 .cse3 .cse5))) [2023-11-29 00:54:12,134 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 186 197) no Hoare annotation was computed. [2023-11-29 00:54:12,134 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 198 206) the Hoare annotation is: true [2023-11-29 00:54:12,134 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 198 206) no Hoare annotation was computed. [2023-11-29 00:54:12,135 INFO L895 garLoopResultBuilder]: At program point L271(line 271) the Hoare annotation is: (let ((.cse13 (<= 2 ~waterLevel~0)) (.cse14 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse11 (= ~pumpRunning~0 0)) (.cse12 (= ~waterLevel~0 1))) (let ((.cse3 (and .cse11 (= |old(~waterLevel~0)| 1) .cse12)) (.cse4 (and .cse13 .cse14)) (.cse9 (and .cse11 .cse14)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (< |old(~waterLevel~0)| 1)) (.cse5 (< ~methaneLevelCritical~0 1)) (.cse10 (not (= 0 ~systemActive~0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse7 (< |old(~waterLevel~0)| 2)) (.cse6 (not (= ~methaneLevelCritical~0 0))) (.cse8 (and .cse11 (<= 1 ~waterLevel~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or .cse0 .cse1 .cse2 .cse3 .cse6 .cse4) (or .cse2 .cse7 .cse5 .cse8) (or .cse0 .cse9 .cse7 .cse5 .cse10) (or .cse0 .cse1 .cse9 .cse6 .cse10) (or (< 1 |old(~waterLevel~0)|) .cse0 .cse1 (and .cse11 .cse12) .cse5 .cse10) (or .cse2 .cse13 .cse7 .cse6 .cse8)))) [2023-11-29 00:54:12,135 INFO L899 garLoopResultBuilder]: For program point L271-1(line 271) no Hoare annotation was computed. [2023-11-29 00:54:12,135 INFO L899 garLoopResultBuilder]: For program point L746-1(lines 745 764) no Hoare annotation was computed. [2023-11-29 00:54:12,135 INFO L899 garLoopResultBuilder]: For program point L808(lines 808 816) no Hoare annotation was computed. [2023-11-29 00:54:12,135 INFO L899 garLoopResultBuilder]: For program point L804(lines 804 821) no Hoare annotation was computed. [2023-11-29 00:54:12,135 INFO L899 garLoopResultBuilder]: For program point L277(lines 277 283) no Hoare annotation was computed. [2023-11-29 00:54:12,135 INFO L899 garLoopResultBuilder]: For program point L661(line 661) no Hoare annotation was computed. [2023-11-29 00:54:12,135 INFO L899 garLoopResultBuilder]: For program point L273(lines 273 286) no Hoare annotation was computed. [2023-11-29 00:54:12,135 INFO L899 garLoopResultBuilder]: For program point L273-1(lines 265 289) no Hoare annotation was computed. [2023-11-29 00:54:12,136 INFO L895 garLoopResultBuilder]: At program point L814(line 814) the Hoare annotation is: (let ((.cse3 (< ~methaneLevelCritical~0 1)) (.cse2 (not (= 1 ~systemActive~0))) (.cse6 (< |old(~waterLevel~0)| 2)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (< |old(~waterLevel~0)| 1)) (.cse4 (not (= ~methaneLevelCritical~0 0))) (.cse5 (not (= 0 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse2 .cse4) (or .cse0 .cse1 .cse3 .cse5) (or .cse2 .cse6 .cse3) (or .cse2 .cse6 .cse4) (or .cse0 .cse1 .cse4 .cse5))) [2023-11-29 00:54:12,136 INFO L895 garLoopResultBuilder]: At program point L810(line 810) the Hoare annotation is: (let ((.cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 1 ~waterLevel~0) (<= 1 |timeShift_processEnvironment_~tmp~7#1|))) (.cse2 (< |old(~waterLevel~0)| 2)) (.cse0 (not (= 1 ~systemActive~0))) (.cse6 (< ~methaneLevelCritical~0 1)) (.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (< |old(~waterLevel~0)| 1)) (.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse7 (not (= 0 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse0 .cse6) (or .cse0 .cse1 .cse2 .cse6) (or .cse4 .cse5 .cse0 .cse3) (or .cse4 .cse5 .cse6 .cse7) (or .cse4 .cse5 .cse3 .cse7))) [2023-11-29 00:54:12,136 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 742 765) the Hoare annotation is: (let ((.cse11 (= ~pumpRunning~0 0)) (.cse12 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse2 (and .cse11 .cse12)) (.cse6 (not (= ~methaneLevelCritical~0 0))) (.cse3 (not (= 1 ~systemActive~0))) (.cse5 (< |old(~waterLevel~0)| 2)) (.cse7 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse12)) (.cse8 (< 1 |old(~waterLevel~0)|)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (< |old(~waterLevel~0)| 1)) (.cse9 (and .cse11 (= ~waterLevel~0 1))) (.cse4 (< ~methaneLevelCritical~0 1)) (.cse10 (not (= 0 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse3 .cse5 .cse6 .cse7) (or .cse8 .cse0 .cse1 .cse3 .cse6 .cse9) (or .cse0 .cse2 .cse5 .cse4 .cse10) (or .cse0 .cse1 .cse2 .cse6 .cse10) (or .cse3 .cse5 .cse7 .cse4) (or .cse8 .cse0 .cse1 .cse9 .cse4 .cse10)))) [2023-11-29 00:54:12,136 INFO L899 garLoopResultBuilder]: For program point L166(lines 166 170) no Hoare annotation was computed. [2023-11-29 00:54:12,136 INFO L899 garLoopResultBuilder]: For program point L166-2(lines 162 173) no Hoare annotation was computed. [2023-11-29 00:54:12,137 INFO L895 garLoopResultBuilder]: At program point L819(line 819) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0))) (let ((.cse5 (< ~methaneLevelCritical~0 1)) (.cse4 (not (= 1 ~systemActive~0))) (.cse6 (< |old(~waterLevel~0)| 2)) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (not .cse7)) (.cse1 (< |old(~waterLevel~0)| 1)) (.cse8 (not (= ~methaneLevelCritical~0 0))) (.cse9 (not (= 0 ~systemActive~0)))) (and (or .cse0 .cse1 (and .cse2 .cse3) .cse4 .cse5) (or .cse4 .cse6 .cse7 .cse5) (or (< 1 |old(~waterLevel~0)|) .cse0 .cse1 .cse4 .cse8 (and .cse2 (= ~waterLevel~0 1))) (or .cse0 .cse1 .cse5 .cse9) (or .cse4 .cse6 (and .cse2 .cse7 .cse3) .cse8) (or .cse0 .cse1 .cse8 .cse9)))) [2023-11-29 00:54:12,137 INFO L899 garLoopResultBuilder]: For program point L819-1(lines 800 824) no Hoare annotation was computed. [2023-11-29 00:54:12,137 INFO L899 garLoopResultBuilder]: For program point L753-1(lines 753 759) no Hoare annotation was computed. [2023-11-29 00:54:12,137 INFO L899 garLoopResultBuilder]: For program point L943(lines 943 947) no Hoare annotation was computed. [2023-11-29 00:54:12,137 INFO L899 garLoopResultBuilder]: For program point L943-2(lines 943 947) no Hoare annotation was computed. [2023-11-29 00:54:12,137 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 742 765) no Hoare annotation was computed. [2023-11-29 00:54:12,137 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 661) no Hoare annotation was computed. [2023-11-29 00:54:12,137 INFO L902 garLoopResultBuilder]: At program point L66-1(lines 66 70) the Hoare annotation is: true [2023-11-29 00:54:12,137 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 52 81) no Hoare annotation was computed. [2023-11-29 00:54:12,138 INFO L902 garLoopResultBuilder]: At program point L62-2(lines 62 76) the Hoare annotation is: true [2023-11-29 00:54:12,138 INFO L902 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: true [2023-11-29 00:54:12,138 INFO L899 garLoopResultBuilder]: For program point L58-1(line 58) no Hoare annotation was computed. [2023-11-29 00:54:12,138 INFO L899 garLoopResultBuilder]: For program point L77(lines 52 81) no Hoare annotation was computed. [2023-11-29 00:54:12,138 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 52 81) the Hoare annotation is: true [2023-11-29 00:54:12,138 INFO L899 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2023-11-29 00:54:12,138 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 70) no Hoare annotation was computed. [2023-11-29 00:54:12,138 INFO L895 garLoopResultBuilder]: At program point L700(line 700) the Hoare annotation is: (let ((.cse5 (<= 1 ~methaneLevelCritical~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse4 (<= 1 ~waterLevel~0)) (.cse6 (= 0 ~systemActive~0)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse3 .cse4 .cse6) (and .cse0 .cse5 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse3 .cse4 .cse6) (and .cse1 (<= 2 ~waterLevel~0) .cse2 .cse3))) [2023-11-29 00:54:12,138 INFO L895 garLoopResultBuilder]: At program point L725(lines 678 727) the Hoare annotation is: (let ((.cse5 (<= 1 ~methaneLevelCritical~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse4 (<= 1 ~waterLevel~0)) (.cse6 (= 0 ~systemActive~0)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse3 .cse4 .cse6) (and .cse0 .cse5 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse3 .cse4 .cse6) (and .cse1 (<= 2 ~waterLevel~0) .cse2 .cse3))) [2023-11-29 00:54:12,138 INFO L899 garLoopResultBuilder]: For program point L688(lines 688 694) no Hoare annotation was computed. [2023-11-29 00:54:12,139 INFO L899 garLoopResultBuilder]: For program point L688-1(lines 688 694) no Hoare annotation was computed. [2023-11-29 00:54:12,139 INFO L899 garLoopResultBuilder]: For program point L957(lines 957 963) no Hoare annotation was computed. [2023-11-29 00:54:12,139 INFO L899 garLoopResultBuilder]: For program point L957-1(lines 957 963) no Hoare annotation was computed. [2023-11-29 00:54:12,139 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 147) no Hoare annotation was computed. [2023-11-29 00:54:12,139 INFO L899 garLoopResultBuilder]: For program point L140-2(lines 140 147) no Hoare annotation was computed. [2023-11-29 00:54:12,139 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 00:54:12,139 INFO L899 garLoopResultBuilder]: For program point L731(lines 668 735) no Hoare annotation was computed. [2023-11-29 00:54:12,139 INFO L899 garLoopResultBuilder]: For program point L698(lines 698 704) no Hoare annotation was computed. [2023-11-29 00:54:12,139 INFO L899 garLoopResultBuilder]: For program point L698-1(lines 698 704) no Hoare annotation was computed. [2023-11-29 00:54:12,139 INFO L895 garLoopResultBuilder]: At program point L690(line 690) the Hoare annotation is: (let ((.cse5 (<= 1 ~methaneLevelCritical~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse4 (<= 1 ~waterLevel~0)) (.cse6 (= 0 ~systemActive~0)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse3 .cse4 .cse6) (and .cse0 .cse5 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse3 .cse4 .cse6) (and .cse1 (<= 2 ~waterLevel~0) .cse2 .cse3))) [2023-11-29 00:54:12,139 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 00:54:12,140 INFO L895 garLoopResultBuilder]: At program point L959(line 959) the Hoare annotation is: (let ((.cse0 (<= 2 ~waterLevel~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and (= ~methaneLevelCritical~0 0) .cse0 .cse1 .cse2) (and (<= 1 ~methaneLevelCritical~0) .cse0 .cse1 .cse2))) [2023-11-29 00:54:12,140 INFO L895 garLoopResultBuilder]: At program point L728(lines 677 729) the Hoare annotation is: false [2023-11-29 00:54:12,140 INFO L899 garLoopResultBuilder]: For program point L716(lines 716 722) no Hoare annotation was computed. [2023-11-29 00:54:12,140 INFO L895 garLoopResultBuilder]: At program point L716-2(lines 708 723) the Hoare annotation is: (let ((.cse0 (<= 1 ~methaneLevelCritical~0)) (.cse4 (= ~pumpRunning~0 0)) (.cse6 (<= 1 ~waterLevel~0)) (.cse7 (= 0 ~systemActive~0)) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse1 (<= 2 ~waterLevel~0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2 .cse3 .cse6) (and .cse4 .cse0 .cse3 .cse6 .cse7) (and .cse4 .cse0 .cse2 .cse3 .cse6) (and .cse4 .cse5 .cse3 .cse6 .cse7) (and .cse5 .cse1 .cse2 .cse3))) [2023-11-29 00:54:12,140 INFO L899 garLoopResultBuilder]: For program point L679(lines 678 727) no Hoare annotation was computed. [2023-11-29 00:54:12,140 INFO L899 garLoopResultBuilder]: For program point L708(lines 708 723) no Hoare annotation was computed. [2023-11-29 00:54:12,140 INFO L895 garLoopResultBuilder]: At program point L793(line 793) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (< ~waterLevel~0 1)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 0))) (or .cse0 .cse1 .cse2 (< ~methaneLevelCritical~0 1)))) [2023-11-29 00:54:12,140 INFO L899 garLoopResultBuilder]: For program point L793-1(lines 774 798) no Hoare annotation was computed. [2023-11-29 00:54:12,140 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 774 798) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (< ~waterLevel~0 1)) (.cse3 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 (not (= ~methaneLevelCritical~0 0))) (or .cse0 .cse1 .cse2 .cse3 (< ~methaneLevelCritical~0 1)))) [2023-11-29 00:54:12,141 INFO L899 garLoopResultBuilder]: For program point L841(lines 841 847) no Hoare annotation was computed. [2023-11-29 00:54:12,141 INFO L899 garLoopResultBuilder]: For program point L841-2(lines 834 850) no Hoare annotation was computed. [2023-11-29 00:54:12,141 INFO L899 garLoopResultBuilder]: For program point isHighWaterSensorDry_returnLabel#1(lines 239 252) no Hoare annotation was computed. [2023-11-29 00:54:12,141 INFO L895 garLoopResultBuilder]: At program point L864(line 864) the Hoare annotation is: (let ((.cse5 (= 1 ~systemActive~0)) (.cse6 (= |old(~pumpRunning~0)| 0))) (let ((.cse3 (< ~methaneLevelCritical~0 1)) (.cse0 (not .cse6)) (.cse1 (< ~waterLevel~0 1)) (.cse2 (not .cse5)) (.cse4 (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) .cse5 .cse6))) (and (or .cse0 .cse1 .cse2 (< 1 ~waterLevel~0) .cse3) (or .cse0 .cse2 (< ~waterLevel~0 2) .cse4 .cse3) (or .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 0)) .cse4)))) [2023-11-29 00:54:12,141 INFO L899 garLoopResultBuilder]: For program point L864-1(line 864) no Hoare annotation was computed. [2023-11-29 00:54:12,141 INFO L899 garLoopResultBuilder]: For program point L924(lines 924 928) no Hoare annotation was computed. [2023-11-29 00:54:12,141 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 774 798) no Hoare annotation was computed. [2023-11-29 00:54:12,141 INFO L899 garLoopResultBuilder]: For program point L924-2(lines 924 928) no Hoare annotation was computed. [2023-11-29 00:54:12,141 INFO L895 garLoopResultBuilder]: At program point L788(line 788) the Hoare annotation is: (let ((.cse4 (= 1 ~systemActive~0)) (.cse5 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse5)) (.cse1 (< ~waterLevel~0 1)) (.cse2 (not .cse4)) (.cse3 (and (= ~pumpRunning~0 0) .cse4 .cse5 (= |processEnvironment__wrappee__highWaterSensor_~tmp~6#1| 0)))) (and (or .cse0 .cse1 .cse2 (< ~methaneLevelCritical~0 1) .cse3) (or .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 0)) .cse3)))) [2023-11-29 00:54:12,142 INFO L899 garLoopResultBuilder]: For program point L243(lines 243 249) no Hoare annotation was computed. [2023-11-29 00:54:12,142 INFO L899 garLoopResultBuilder]: For program point L782(lines 782 790) no Hoare annotation was computed. [2023-11-29 00:54:12,142 INFO L899 garLoopResultBuilder]: For program point L778(lines 778 795) no Hoare annotation was computed. [2023-11-29 00:54:12,142 INFO L899 garLoopResultBuilder]: For program point L178-1(lines 174 185) no Hoare annotation was computed. [2023-11-29 00:54:12,142 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 174 185) no Hoare annotation was computed. [2023-11-29 00:54:12,142 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 174 185) the Hoare annotation is: (let ((.cse2 (not (= 1 ~systemActive~0))) (.cse5 (< |old(~waterLevel~0)| 2)) (.cse6 (< ~methaneLevelCritical~0 1)) (.cse0 (< |old(~waterLevel~0)| 1)) (.cse1 (not (= ~pumpRunning~0 0))) (.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse7 (not (= 0 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse2 .cse5 .cse4 .cse6) (or (< 1 |old(~waterLevel~0)|) .cse0 .cse1 .cse2 (= ~waterLevel~0 1) .cse6) (or .cse2 .cse5 .cse3 .cse4) (or .cse0 .cse1 .cse4 .cse6 .cse7) (or .cse0 .cse1 .cse3 .cse4 .cse7))) [2023-11-29 00:54:12,145 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:12,147 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:54:12,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:54:12 BoogieIcfgContainer [2023-11-29 00:54:12,156 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:54:12,157 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:54:12,157 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:54:12,157 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:54:12,158 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:54:03" (3/4) ... [2023-11-29 00:54:12,159 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:54:12,161 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-11-29 00:54:12,162 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-29 00:54:12,162 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-29 00:54:12,162 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-11-29 00:54:12,162 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-29 00:54:12,162 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-29 00:54:12,162 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-11-29 00:54:12,162 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-29 00:54:12,169 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2023-11-29 00:54:12,170 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-29 00:54:12,170 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 00:54:12,171 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 00:54:12,172 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 00:54:12,283 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:54:12,284 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:54:12,284 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:54:12,285 INFO L158 Benchmark]: Toolchain (without parser) took 9899.01ms. Allocated memory was 169.9MB in the beginning and 257.9MB in the end (delta: 88.1MB). Free memory was 139.0MB in the beginning and 109.1MB in the end (delta: 29.9MB). Peak memory consumption was 119.4MB. Max. memory is 16.1GB. [2023-11-29 00:54:12,285 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:54:12,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.75ms. Allocated memory is still 169.9MB. Free memory was 138.6MB in the beginning and 118.8MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 00:54:12,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.30ms. Allocated memory is still 169.9MB. Free memory was 118.8MB in the beginning and 116.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:54:12,286 INFO L158 Benchmark]: Boogie Preprocessor took 47.75ms. Allocated memory is still 169.9MB. Free memory was 116.7MB in the beginning and 114.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:54:12,287 INFO L158 Benchmark]: RCFGBuilder took 470.36ms. Allocated memory is still 169.9MB. Free memory was 114.2MB in the beginning and 91.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 00:54:12,287 INFO L158 Benchmark]: TraceAbstraction took 8799.57ms. Allocated memory was 169.9MB in the beginning and 257.9MB in the end (delta: 88.1MB). Free memory was 90.8MB in the beginning and 116.4MB in the end (delta: -25.7MB). Peak memory consumption was 106.9MB. Max. memory is 16.1GB. [2023-11-29 00:54:12,288 INFO L158 Benchmark]: Witness Printer took 127.39ms. Allocated memory is still 257.9MB. Free memory was 116.4MB in the beginning and 109.1MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 00:54:12,290 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.75ms. Allocated memory is still 169.9MB. Free memory was 138.6MB in the beginning and 118.8MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.30ms. Allocated memory is still 169.9MB. Free memory was 118.8MB in the beginning and 116.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.75ms. Allocated memory is still 169.9MB. Free memory was 116.7MB in the beginning and 114.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 470.36ms. Allocated memory is still 169.9MB. Free memory was 114.2MB in the beginning and 91.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 8799.57ms. Allocated memory was 169.9MB in the beginning and 257.9MB in the end (delta: 88.1MB). Free memory was 90.8MB in the beginning and 116.4MB in the end (delta: -25.7MB). Peak memory consumption was 106.9MB. Max. memory is 16.1GB. * Witness Printer took 127.39ms. Allocated memory is still 257.9MB. Free memory was 116.4MB in the beginning and 109.1MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] - GenericResultAtLocation [Line: 153]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [153] - GenericResultAtLocation [Line: 262]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [262] - GenericResultAtLocation [Line: 290]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [290] - GenericResultAtLocation [Line: 656]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [656] - GenericResultAtLocation [Line: 665]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [665] - GenericResultAtLocation [Line: 736]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [736] - GenericResultAtLocation [Line: 976]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [976] * 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: 661]: 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 9 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.7s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1282 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1247 mSDsluCounter, 2479 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1548 mSDsCounter, 353 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1615 IncrementalHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 353 mSolverCounterUnsat, 931 mSDtfsCounter, 1615 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 394 GetRequests, 306 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1245occurred in iteration=8, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 208 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 1997 PreInvPairs, 2108 NumberOfFragments, 1463 HoareAnnotationTreeSize, 1997 FomulaSimplifications, 1046 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 24 FomulaSimplificationsInter, 4160 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 710 NumberOfCodeBlocks, 710 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 695 ConstructedInterpolants, 0 QuantifiedInterpolants, 1146 SizeOfPredicates, 7 NumberOfNonLiveVariables, 811 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 131/137 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: 678]: Loop Invariant Derived loop invariant: (((((((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) && (1 <= waterLevel)) || (((((pumpRunning == 0) && (1 <= methaneLevelCritical)) && (splverifierCounter == 0)) && (1 <= waterLevel)) && (0 == systemActive))) || (((((pumpRunning == 0) && (1 <= methaneLevelCritical)) && (1 == systemActive)) && (splverifierCounter == 0)) && (1 <= waterLevel))) || (((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (splverifierCounter == 0)) && (1 <= waterLevel)) && (0 == systemActive))) || ((((methaneLevelCritical == 0) && (2 <= waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 677]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-11-29 00:54:12,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ca276ad-2648-4d26-b430-e531ed88c746/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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