./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.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_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/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_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/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_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/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 b28893eeb4e8958df7bf6ff738f75538c209345459f7fc3e6dda93763604868d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:06:09,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:06:09,434 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:06:09,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:06:09,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:06:09,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:06:09,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:06:09,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:06:09,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:06:09,472 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:06:09,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:06:09,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:06:09,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:06:09,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:06:09,475 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:06:09,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:06:09,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:06:09,477 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:06:09,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:06:09,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:06:09,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:06:09,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:06:09,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:06:09,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:06:09,481 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:06:09,481 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:06:09,482 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:06:09,482 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:06:09,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:06:09,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:06:09,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:06:09,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:06:09,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:06:09,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:06:09,486 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:06:09,486 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:06:09,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:06:09,487 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:06:09,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:06:09,488 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:06:09,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:06:09,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:06:09,489 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_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b28893eeb4e8958df7bf6ff738f75538c209345459f7fc3e6dda93763604868d [2023-11-29 00:06:09,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:06:09,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:06:09,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:06:09,840 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:06:09,840 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:06:09,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2023-11-29 00:06:13,338 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:06:13,534 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:06:13,534 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2023-11-29 00:06:13,549 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/data/c02f43f51/a418c6d0d8de4188bb7f25b1a2ab11cf/FLAG6e4b0675c [2023-11-29 00:06:13,563 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/data/c02f43f51/a418c6d0d8de4188bb7f25b1a2ab11cf [2023-11-29 00:06:13,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:06:13,566 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:06:13,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:06:13,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:06:13,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:06:13,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:13,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c5cd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13, skipping insertion in model container [2023-11-29 00:06:13,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:13,618 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:06:13,841 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_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[13010,13023] [2023-11-29 00:06:13,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:06:13,879 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:06:13,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] [2023-11-29 00:06:13,890 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [153] [2023-11-29 00:06:13,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [182] [2023-11-29 00:06:13,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [548] [2023-11-29 00:06:13,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [557] [2023-11-29 00:06:13,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [767] [2023-11-29 00:06:13,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [861] [2023-11-29 00:06:13,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [928] [2023-11-29 00:06:13,933 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_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[13010,13023] [2023-11-29 00:06:13,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:06:13,967 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:06:13,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13 WrapperNode [2023-11-29 00:06:13,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:06:13,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:06:13,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:06:13,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:06:13,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:13,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,016 INFO L138 Inliner]: procedures = 55, calls = 100, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 209 [2023-11-29 00:06:14,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:06:14,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:06:14,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:06:14,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:06:14,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,047 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 00:06:14,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,047 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,053 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:06:14,064 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:06:14,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:06:14,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:06:14,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (1/1) ... [2023-11-29 00:06:14,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:06:14,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:06:14,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:06:14,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:06:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:06:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-29 00:06:14,149 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-29 00:06:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-29 00:06:14,150 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-29 00:06:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-29 00:06:14,150 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-29 00:06:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-29 00:06:14,150 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-29 00:06:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-11-29 00:06:14,150 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-11-29 00:06:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-11-29 00:06:14,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-11-29 00:06:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:06:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-29 00:06:14,151 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-29 00:06:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:06:14,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:06:14,221 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:06:14,223 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:06:14,424 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:06:14,488 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:06:14,488 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:06:14,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:06:14 BoogieIcfgContainer [2023-11-29 00:06:14,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:06:14,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:06:14,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:06:14,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:06:14,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:06:13" (1/3) ... [2023-11-29 00:06:14,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e56a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:06:14, skipping insertion in model container [2023-11-29 00:06:14,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:06:13" (2/3) ... [2023-11-29 00:06:14,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e56a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:06:14, skipping insertion in model container [2023-11-29 00:06:14,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:06:14" (3/3) ... [2023-11-29 00:06:14,499 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2023-11-29 00:06:14,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:06:14,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:06:14,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:06:14,561 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;@4b5d08be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:06:14,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:06:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 56 states have internal predecessors, (74), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 00:06:14,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 00:06:14,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:14,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:06:14,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:14,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:14,582 INFO L85 PathProgramCache]: Analyzing trace with hash -214149738, now seen corresponding path program 1 times [2023-11-29 00:06:14,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:14,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825047711] [2023-11-29 00:06:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:14,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:14,759 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 00:06:14,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:14,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825047711] [2023-11-29 00:06:14,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825047711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:06:14,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:06:14,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:06:14,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680028889] [2023-11-29 00:06:14,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:06:14,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:06:14,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:06:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:06:14,805 INFO L87 Difference]: Start difference. First operand has 69 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 56 states have internal predecessors, (74), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:06:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:14,868 INFO L93 Difference]: Finished difference Result 136 states and 197 transitions. [2023-11-29 00:06:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:06:14,870 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 00:06:14,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:14,881 INFO L225 Difference]: With dead ends: 136 [2023-11-29 00:06:14,881 INFO L226 Difference]: Without dead ends: 64 [2023-11-29 00:06:14,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:06:14,889 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:14,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:06:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-29 00:06:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-29 00:06:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 52 states have internal predecessors, (64), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 00:06:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2023-11-29 00:06:14,937 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 12 [2023-11-29 00:06:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:14,937 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2023-11-29 00:06:14,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:06:14,938 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2023-11-29 00:06:14,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 00:06:14,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:14,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:06:14,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:06:14,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:14,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:14,942 INFO L85 PathProgramCache]: Analyzing trace with hash 447916883, now seen corresponding path program 1 times [2023-11-29 00:06:14,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:14,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240418389] [2023-11-29 00:06:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:14,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:06:15,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240418389] [2023-11-29 00:06:15,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240418389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:06:15,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:06:15,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:06:15,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538593248] [2023-11-29 00:06:15,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:06:15,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:06:15,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:15,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:06:15,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:06:15,032 INFO L87 Difference]: Start difference. First operand 64 states and 87 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:06:15,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:15,069 INFO L93 Difference]: Finished difference Result 101 states and 137 transitions. [2023-11-29 00:06:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:06:15,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 00:06:15,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:15,071 INFO L225 Difference]: With dead ends: 101 [2023-11-29 00:06:15,071 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 00:06:15,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:06:15,073 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 11 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:15,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 117 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:06:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 00:06:15,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-29 00:06:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.45) internal successors, (58), 47 states have internal predecessors, (58), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:06:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2023-11-29 00:06:15,084 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 13 [2023-11-29 00:06:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:15,084 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2023-11-29 00:06:15,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:06:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2023-11-29 00:06:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:06:15,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:15,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:06:15,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:06:15,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:15,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash 684892671, now seen corresponding path program 1 times [2023-11-29 00:06:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:15,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848281148] [2023-11-29 00:06:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:15,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,181 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 00:06:15,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:15,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848281148] [2023-11-29 00:06:15,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848281148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:06:15,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:06:15,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:06:15,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744514823] [2023-11-29 00:06:15,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:06:15,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:06:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:15,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:06:15,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:06:15,184 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:06:15,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:15,250 INFO L93 Difference]: Finished difference Result 110 states and 151 transitions. [2023-11-29 00:06:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:06:15,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 00:06:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:15,252 INFO L225 Difference]: With dead ends: 110 [2023-11-29 00:06:15,252 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 00:06:15,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:06:15,255 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 82 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:15,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 110 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:06:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 00:06:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-29 00:06:15,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.425) internal successors, (57), 47 states have internal predecessors, (57), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 00:06:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2023-11-29 00:06:15,267 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 16 [2023-11-29 00:06:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:15,267 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2023-11-29 00:06:15,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:06:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2023-11-29 00:06:15,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 00:06:15,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:15,269 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 00:06:15,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:06:15,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:15,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:15,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1625181448, now seen corresponding path program 1 times [2023-11-29 00:06:15,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:15,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623258262] [2023-11-29 00:06:15,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:15,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:06:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,321 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 00:06:15,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:15,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623258262] [2023-11-29 00:06:15,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623258262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:06:15,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:06:15,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:06:15,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516518228] [2023-11-29 00:06:15,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:06:15,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:06:15,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:15,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:06:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:06:15,325 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 00:06:15,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:15,380 INFO L93 Difference]: Finished difference Result 147 states and 199 transitions. [2023-11-29 00:06:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:06:15,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 00:06:15,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:15,382 INFO L225 Difference]: With dead ends: 147 [2023-11-29 00:06:15,382 INFO L226 Difference]: Without dead ends: 93 [2023-11-29 00:06:15,383 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 00:06:15,385 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 58 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:15,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 106 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:06:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-29 00:06:15,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2023-11-29 00:06:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.378787878787879) internal successors, (91), 74 states have internal predecessors, (91), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2023-11-29 00:06:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2023-11-29 00:06:15,404 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 23 [2023-11-29 00:06:15,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:15,404 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2023-11-29 00:06:15,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 00:06:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2023-11-29 00:06:15,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 00:06:15,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:15,406 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:06:15,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:06:15,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:15,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:15,407 INFO L85 PathProgramCache]: Analyzing trace with hash -378795245, now seen corresponding path program 1 times [2023-11-29 00:06:15,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:15,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027436982] [2023-11-29 00:06:15,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:15,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:06:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:06:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,558 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 00:06:15,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:15,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027436982] [2023-11-29 00:06:15,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027436982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:06:15,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:06:15,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:06:15,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665548715] [2023-11-29 00:06:15,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:06:15,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:06:15,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:15,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:06:15,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:06:15,561 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:06:15,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:15,788 INFO L93 Difference]: Finished difference Result 271 states and 374 transitions. [2023-11-29 00:06:15,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:06:15,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2023-11-29 00:06:15,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:15,792 INFO L225 Difference]: With dead ends: 271 [2023-11-29 00:06:15,792 INFO L226 Difference]: Without dead ends: 182 [2023-11-29 00:06:15,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:06:15,794 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 117 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:15,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 147 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:06:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-29 00:06:15,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2023-11-29 00:06:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 129 states have (on average 1.3565891472868217) internal successors, (175), 142 states have internal predecessors, (175), 21 states have call successors, (21), 21 states have call predecessors, (21), 25 states have return successors, (45), 23 states have call predecessors, (45), 21 states have call successors, (45) [2023-11-29 00:06:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 241 transitions. [2023-11-29 00:06:15,827 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 241 transitions. Word has length 31 [2023-11-29 00:06:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:15,827 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 241 transitions. [2023-11-29 00:06:15,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:06:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 241 transitions. [2023-11-29 00:06:15,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 00:06:15,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:15,830 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:06:15,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:06:15,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:15,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:15,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1020633423, now seen corresponding path program 1 times [2023-11-29 00:06:15,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:15,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984199597] [2023-11-29 00:06:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:15,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:06:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 00:06:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:06:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 00:06:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:06:15,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:15,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984199597] [2023-11-29 00:06:15,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984199597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:06:15,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:06:15,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:06:15,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177905892] [2023-11-29 00:06:15,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:06:15,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:06:15,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:06:15,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:06:15,984 INFO L87 Difference]: Start difference. First operand 176 states and 241 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:06:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:16,227 INFO L93 Difference]: Finished difference Result 391 states and 577 transitions. [2023-11-29 00:06:16,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:06:16,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2023-11-29 00:06:16,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:16,231 INFO L225 Difference]: With dead ends: 391 [2023-11-29 00:06:16,231 INFO L226 Difference]: Without dead ends: 217 [2023-11-29 00:06:16,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:06:16,234 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 61 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:16,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 155 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:06:16,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-29 00:06:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 203. [2023-11-29 00:06:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 149 states have (on average 1.3355704697986577) internal successors, (199), 166 states have internal predecessors, (199), 24 states have call successors, (24), 21 states have call predecessors, (24), 29 states have return successors, (59), 27 states have call predecessors, (59), 24 states have call successors, (59) [2023-11-29 00:06:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 282 transitions. [2023-11-29 00:06:16,270 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 282 transitions. Word has length 57 [2023-11-29 00:06:16,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:16,270 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 282 transitions. [2023-11-29 00:06:16,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:06:16,271 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 282 transitions. [2023-11-29 00:06:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 00:06:16,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:16,273 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:06:16,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:06:16,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:16,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:16,274 INFO L85 PathProgramCache]: Analyzing trace with hash -824733743, now seen corresponding path program 1 times [2023-11-29 00:06:16,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:16,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848811811] [2023-11-29 00:06:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:16,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:16,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:06:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:16,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 00:06:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:16,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:06:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:16,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 00:06:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:06:16,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:16,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848811811] [2023-11-29 00:06:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848811811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:06:16,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:06:16,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:06:16,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123178839] [2023-11-29 00:06:16,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:06:16,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:06:16,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:16,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:06:16,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:06:16,439 INFO L87 Difference]: Start difference. First operand 203 states and 282 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:06:16,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:16,730 INFO L93 Difference]: Finished difference Result 404 states and 577 transitions. [2023-11-29 00:06:16,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:06:16,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2023-11-29 00:06:16,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:16,734 INFO L225 Difference]: With dead ends: 404 [2023-11-29 00:06:16,734 INFO L226 Difference]: Without dead ends: 203 [2023-11-29 00:06:16,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:06:16,736 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 115 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:16,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 166 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:06:16,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-29 00:06:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 193. [2023-11-29 00:06:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 141 states have (on average 1.3191489361702127) internal successors, (186), 157 states have internal predecessors, (186), 24 states have call successors, (24), 20 states have call predecessors, (24), 27 states have return successors, (53), 26 states have call predecessors, (53), 24 states have call successors, (53) [2023-11-29 00:06:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 263 transitions. [2023-11-29 00:06:16,765 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 263 transitions. Word has length 57 [2023-11-29 00:06:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:16,766 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 263 transitions. [2023-11-29 00:06:16,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:06:16,766 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 263 transitions. [2023-11-29 00:06:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 00:06:16,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:16,769 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:06:16,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:06:16,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:16,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:16,770 INFO L85 PathProgramCache]: Analyzing trace with hash -401087021, now seen corresponding path program 1 times [2023-11-29 00:06:16,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:16,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343267272] [2023-11-29 00:06:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:16,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:16,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 00:06:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:16,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 00:06:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:16,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:06:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:16,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 00:06:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:06:16,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:16,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343267272] [2023-11-29 00:06:16,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343267272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:06:16,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:06:16,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:06:16,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907360970] [2023-11-29 00:06:16,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:06:16,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:06:16,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:16,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:06:16,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:06:16,952 INFO L87 Difference]: Start difference. First operand 193 states and 263 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 00:06:17,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:17,498 INFO L93 Difference]: Finished difference Result 565 states and 788 transitions. [2023-11-29 00:06:17,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:06:17,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 57 [2023-11-29 00:06:17,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:17,503 INFO L225 Difference]: With dead ends: 565 [2023-11-29 00:06:17,503 INFO L226 Difference]: Without dead ends: 374 [2023-11-29 00:06:17,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:06:17,505 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 373 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:17,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 255 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:06:17,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-29 00:06:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 352. [2023-11-29 00:06:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.3091603053435115) internal successors, (343), 284 states have internal predecessors, (343), 45 states have call successors, (45), 38 states have call predecessors, (45), 44 states have return successors, (87), 44 states have call predecessors, (87), 45 states have call successors, (87) [2023-11-29 00:06:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 475 transitions. [2023-11-29 00:06:17,551 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 475 transitions. Word has length 57 [2023-11-29 00:06:17,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:17,552 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 475 transitions. [2023-11-29 00:06:17,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 00:06:17,552 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 475 transitions. [2023-11-29 00:06:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 00:06:17,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:17,554 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:06:17,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:06:17,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:17,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1218771245, now seen corresponding path program 1 times [2023-11-29 00:06:17,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:17,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553940851] [2023-11-29 00:06:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:17,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 00:06:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:06:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:17,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 00:06:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:06:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 00:06:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:06:17,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:17,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553940851] [2023-11-29 00:06:17,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553940851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:06:17,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299526616] [2023-11-29 00:06:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:17,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:06:17,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:06:17,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:06:17,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:06:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:17,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:06:17,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:06:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:06:17,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:06:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:06:18,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299526616] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:06:18,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:06:18,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-11-29 00:06:18,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701514980] [2023-11-29 00:06:18,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:06:18,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:06:18,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:18,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:06:18,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:06:18,094 INFO L87 Difference]: Start difference. First operand 352 states and 475 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-29 00:06:19,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:19,411 INFO L93 Difference]: Finished difference Result 1320 states and 1862 transitions. [2023-11-29 00:06:19,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 00:06:19,412 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 61 [2023-11-29 00:06:19,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:19,419 INFO L225 Difference]: With dead ends: 1320 [2023-11-29 00:06:19,419 INFO L226 Difference]: Without dead ends: 970 [2023-11-29 00:06:19,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 133 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=529, Invalid=2777, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 00:06:19,424 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 419 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:19,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 478 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:06:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-11-29 00:06:19,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 872. [2023-11-29 00:06:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 643 states have (on average 1.265940902021773) internal successors, (814), 692 states have internal predecessors, (814), 116 states have call successors, (116), 100 states have call predecessors, (116), 112 states have return successors, (246), 110 states have call predecessors, (246), 116 states have call successors, (246) [2023-11-29 00:06:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1176 transitions. [2023-11-29 00:06:19,518 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1176 transitions. Word has length 61 [2023-11-29 00:06:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:19,518 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1176 transitions. [2023-11-29 00:06:19,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-29 00:06:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1176 transitions. [2023-11-29 00:06:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 00:06:19,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:19,523 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 00:06:19,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:06:19,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:06:19,724 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:19,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:19,725 INFO L85 PathProgramCache]: Analyzing trace with hash -886472874, now seen corresponding path program 1 times [2023-11-29 00:06:19,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:19,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126398156] [2023-11-29 00:06:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:19,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:19,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 00:06:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:19,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 00:06:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 00:06:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 00:06:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:06:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:06:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 00:06:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 00:06:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:06:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 00:06:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:06:20,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:20,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126398156] [2023-11-29 00:06:20,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126398156] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:06:20,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399130180] [2023-11-29 00:06:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:20,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:06:20,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:06:20,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:06:20,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:06:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:06:20,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:06:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 00:06:20,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:06:20,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399130180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:06:20,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:06:20,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2023-11-29 00:06:20,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569427835] [2023-11-29 00:06:20,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:06:20,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:06:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:06:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:06:20,244 INFO L87 Difference]: Start difference. First operand 872 states and 1176 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 00:06:20,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:20,429 INFO L93 Difference]: Finished difference Result 1719 states and 2329 transitions. [2023-11-29 00:06:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:06:20,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 96 [2023-11-29 00:06:20,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:20,437 INFO L225 Difference]: With dead ends: 1719 [2023-11-29 00:06:20,437 INFO L226 Difference]: Without dead ends: 849 [2023-11-29 00:06:20,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:06:20,441 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 50 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:20,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 303 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:06:20,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-11-29 00:06:20,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 847. [2023-11-29 00:06:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 624 states have (on average 1.2532051282051282) internal successors, (782), 671 states have internal predecessors, (782), 115 states have call successors, (115), 99 states have call predecessors, (115), 107 states have return successors, (214), 105 states have call predecessors, (214), 115 states have call successors, (214) [2023-11-29 00:06:20,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1111 transitions. [2023-11-29 00:06:20,503 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1111 transitions. Word has length 96 [2023-11-29 00:06:20,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:20,503 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1111 transitions. [2023-11-29 00:06:20,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 00:06:20,504 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1111 transitions. [2023-11-29 00:06:20,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 00:06:20,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:20,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 00:06:20,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 00:06:20,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:06:20,708 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:20,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1872582826, now seen corresponding path program 2 times [2023-11-29 00:06:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596276366] [2023-11-29 00:06:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:20,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 00:06:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 00:06:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 00:06:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 00:06:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 00:06:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 00:06:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 00:06:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 00:06:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 00:06:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 00:06:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:06:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 00:06:20,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:06:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596276366] [2023-11-29 00:06:20,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596276366] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:06:20,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747791434] [2023-11-29 00:06:20,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:06:20,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:06:20,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:06:20,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:06:20,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:06:20,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:06:20,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:06:20,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:06:20,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:06:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 00:06:21,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:06:21,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747791434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:06:21,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:06:21,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-11-29 00:06:21,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438712637] [2023-11-29 00:06:21,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:06:21,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:06:21,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:06:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:06:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:06:21,021 INFO L87 Difference]: Start difference. First operand 847 states and 1111 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 00:06:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:06:21,125 INFO L93 Difference]: Finished difference Result 862 states and 1125 transitions. [2023-11-29 00:06:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:06:21,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 96 [2023-11-29 00:06:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:06:21,131 INFO L225 Difference]: With dead ends: 862 [2023-11-29 00:06:21,131 INFO L226 Difference]: Without dead ends: 860 [2023-11-29 00:06:21,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:06:21,133 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 57 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:06:21,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 165 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:06:21,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-11-29 00:06:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 847. [2023-11-29 00:06:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 624 states have (on average 1.2419871794871795) internal successors, (775), 671 states have internal predecessors, (775), 115 states have call successors, (115), 99 states have call predecessors, (115), 107 states have return successors, (214), 105 states have call predecessors, (214), 115 states have call successors, (214) [2023-11-29 00:06:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1104 transitions. [2023-11-29 00:06:21,186 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1104 transitions. Word has length 96 [2023-11-29 00:06:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:06:21,187 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1104 transitions. [2023-11-29 00:06:21,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 00:06:21,187 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1104 transitions. [2023-11-29 00:06:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:06:21,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:06:21,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:06:21,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:06:21,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:06:21,393 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:06:21,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:06:21,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1734008706, now seen corresponding path program 1 times [2023-11-29 00:06:21,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:06:21,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335582560] [2023-11-29 00:06:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:06:21,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:06:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:06:21,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:06:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:06:21,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:06:21,458 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:06:21,459 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 00:06:21,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:06:21,463 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:06:21,467 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:06:21,504 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated [2023-11-29 00:06:21,507 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-29 00:06:21,511 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-29 00:06:21,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:06:21 BoogieIcfgContainer [2023-11-29 00:06:21,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:06:21,536 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:06:21,536 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:06:21,536 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:06:21,537 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:06:14" (3/4) ... [2023-11-29 00:06:21,537 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-29 00:06:21,553 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated [2023-11-29 00:06:21,555 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-29 00:06:21,558 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated [2023-11-29 00:06:21,626 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:06:21,626 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:06:21,627 INFO L158 Benchmark]: Toolchain (without parser) took 8060.28ms. Allocated memory was 161.5MB in the beginning and 249.6MB in the end (delta: 88.1MB). Free memory was 112.9MB in the beginning and 146.4MB in the end (delta: -33.5MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. [2023-11-29 00:06:21,627 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 161.5MB. Free memory was 134.1MB in the beginning and 133.9MB in the end (delta: 148.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:06:21,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.63ms. Allocated memory is still 161.5MB. Free memory was 112.9MB in the beginning and 93.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 00:06:21,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.85ms. Allocated memory is still 161.5MB. Free memory was 93.5MB in the beginning and 91.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:06:21,628 INFO L158 Benchmark]: Boogie Preprocessor took 46.28ms. Allocated memory is still 161.5MB. Free memory was 91.2MB in the beginning and 88.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:06:21,628 INFO L158 Benchmark]: RCFGBuilder took 424.96ms. Allocated memory was 161.5MB in the beginning and 207.6MB in the end (delta: 46.1MB). Free memory was 88.7MB in the beginning and 160.1MB in the end (delta: -71.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2023-11-29 00:06:21,629 INFO L158 Benchmark]: TraceAbstraction took 7043.27ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 160.1MB in the beginning and 153.9MB in the end (delta: 6.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-29 00:06:21,629 INFO L158 Benchmark]: Witness Printer took 90.17ms. Allocated memory is still 249.6MB. Free memory was 153.9MB in the beginning and 146.4MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 00:06:21,631 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 161.5MB. Free memory was 134.1MB in the beginning and 133.9MB in the end (delta: 148.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.63ms. Allocated memory is still 161.5MB. Free memory was 112.9MB in the beginning and 93.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.85ms. Allocated memory is still 161.5MB. Free memory was 93.5MB in the beginning and 91.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.28ms. Allocated memory is still 161.5MB. Free memory was 91.2MB in the beginning and 88.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.96ms. Allocated memory was 161.5MB in the beginning and 207.6MB in the end (delta: 46.1MB). Free memory was 88.7MB in the beginning and 160.1MB in the end (delta: -71.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7043.27ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 160.1MB in the beginning and 153.9MB in the end (delta: 6.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 90.17ms. Allocated memory is still 249.6MB. Free memory was 153.9MB in the beginning and 146.4MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] - GenericResultAtLocation [Line: 153]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [153] - GenericResultAtLocation [Line: 182]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [182] - GenericResultAtLocation [Line: 548]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [548] - GenericResultAtLocation [Line: 557]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [557] - GenericResultAtLocation [Line: 767]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [767] - GenericResultAtLocation [Line: 861]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [861] - GenericResultAtLocation [Line: 928]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [928] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret31 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 553]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L352] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L565] int pumpRunning = 0; [L566] int systemActive = 1; [L768] int waterLevel = 1; [L769] int methaneLevelCritical = 0; [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L955] int retValue_acc ; [L958] retValue_acc = 1 [L959] return (retValue_acc); [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L863] int splverifierCounter ; [L864] int tmp ; [L865] int tmp___0 ; [L866] int tmp___1 ; [L867] int tmp___2 ; [L870] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L872] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L874] COND TRUE splverifierCounter < 4 [L880] tmp = __VERIFIER_nondet_int() [L882] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L884] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L786] COND TRUE waterLevel < 2 [L787] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L884] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L890] tmp___0 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L900] tmp___2 = __VERIFIER_nondet_int() [L902] COND TRUE \read(tmp___2) [L904] CALL startSystem() [L763] systemActive = 1 [L904] RET startSystem() [L917] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L572] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L627] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L630] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L645] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L601] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE ! pumpRunning [L606] CALL, EXPR isHighWaterLevel() [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L747] CALL, EXPR isHighWaterSensorDry() [L848] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L851] COND FALSE !(waterLevel < 2) [L855] retValue_acc = 0 [L856] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L747] RET, EXPR isHighWaterSensorDry() [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); [L606] RET, EXPR isHighWaterLevel() [L606] tmp = isHighWaterLevel() [L608] COND TRUE \read(tmp) [L610] CALL activatePump() [L660] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L664] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L685] int retValue_acc ; [L689] CALL, EXPR isMethaneLevelCritical() [L807] int retValue_acc ; [L810] retValue_acc = methaneLevelCritical [L811] return (retValue_acc); [L689] RET, EXPR isMethaneLevelCritical() [L689] retValue_acc = isMethaneLevelCritical() [L691] return (retValue_acc); [L664] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L664] tmp = isMethaneAlarm() [L666] COND FALSE !(\read(tmp)) [L670] CALL activatePump__wrappee__highWaterSensor() [L655] pumpRunning = 1 [L670] RET activatePump__wrappee__highWaterSensor() [L610] RET activatePump() [L645] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L158] int tmp ; [L159] int tmp___0 ; [L163] CALL, EXPR getWaterLevel() [L839] int retValue_acc ; [L842] retValue_acc = waterLevel [L843] return (retValue_acc); [L163] RET, EXPR getWaterLevel() [L163] tmp = getWaterLevel() [L165] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L587] RET __utac_acc__Specification4_spec__1() [L917] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L872] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L874] COND TRUE splverifierCounter < 4 [L880] tmp = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L890] tmp___0 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L900] tmp___2 = __VERIFIER_nondet_int() [L902] COND TRUE \read(tmp___2) [L904] CALL startSystem() [L763] systemActive = 1 [L904] RET startSystem() [L917] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L572] COND TRUE \read(pumpRunning) [L574] CALL lowerWaterLevel() [L774] COND TRUE waterLevel > 0 [L775] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L574] RET lowerWaterLevel() [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L627] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L630] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L632] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L685] int retValue_acc ; [L689] CALL, EXPR isMethaneLevelCritical() [L807] int retValue_acc ; [L810] retValue_acc = methaneLevelCritical [L811] return (retValue_acc); [L689] RET, EXPR isMethaneLevelCritical() [L689] retValue_acc = isMethaneLevelCritical() [L691] return (retValue_acc); [L632] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L632] tmp = isMethaneAlarm() [L634] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L640] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L601] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L604] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L619] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L640] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L158] int tmp ; [L159] int tmp___0 ; [L163] CALL, EXPR getWaterLevel() [L839] int retValue_acc ; [L842] retValue_acc = waterLevel [L843] return (retValue_acc); [L163] RET, EXPR getWaterLevel() [L163] tmp = getWaterLevel() [L165] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L587] RET __utac_acc__Specification4_spec__1() [L917] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L872] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L874] COND TRUE splverifierCounter < 4 [L880] tmp = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L890] tmp___0 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L900] tmp___2 = __VERIFIER_nondet_int() [L902] COND TRUE \read(tmp___2) [L904] CALL startSystem() [L763] systemActive = 1 [L904] RET startSystem() [L917] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L572] COND TRUE \read(pumpRunning) [L574] CALL lowerWaterLevel() [L774] COND TRUE waterLevel > 0 [L775] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L574] RET lowerWaterLevel() [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L627] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L630] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L632] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L685] int retValue_acc ; [L689] CALL, EXPR isMethaneLevelCritical() [L807] int retValue_acc ; [L810] retValue_acc = methaneLevelCritical [L811] return (retValue_acc); [L689] RET, EXPR isMethaneLevelCritical() [L689] retValue_acc = isMethaneLevelCritical() [L691] return (retValue_acc); [L632] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L632] tmp = isMethaneAlarm() [L634] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L640] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L601] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L604] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L619] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L640] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L158] int tmp ; [L159] int tmp___0 ; [L163] CALL, EXPR getWaterLevel() [L839] int retValue_acc ; [L842] retValue_acc = waterLevel [L843] return (retValue_acc); [L163] RET, EXPR getWaterLevel() [L163] tmp = getWaterLevel() [L165] COND TRUE tmp == 0 [L167] CALL, EXPR isPumpRunning() [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); [L167] RET, EXPR isPumpRunning() [L167] tmp___0 = isPumpRunning() [L169] COND TRUE \read(tmp___0) [L171] CALL __automaton_fail() [L553] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1377 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1343 mSDsluCounter, 2081 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1397 mSDsCounter, 422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2047 IncrementalHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 422 mSolverCounterUnsat, 684 mSDtfsCounter, 2047 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 525 GetRequests, 396 SyntacticMatches, 4 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=872occurred in iteration=9, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 167 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 872 NumberOfCodeBlocks, 801 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 818 ConstructedInterpolants, 0 QuantifiedInterpolants, 1381 SizeOfPredicates, 8 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 15 InterpolantComputations, 10 PerfectInterpolantSequences, 313/332 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-29 00:06:21,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_059a4348-c761-4fe5-a1e5-4e9eca3cc90a/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE