./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB --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 5055f39b9198ec38ad0f2881791eb80b1e4ab6fc763077f931bae502928055b4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:39:24,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:39:25,031 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:39:25,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:39:25,038 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:39:25,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:39:25,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:39:25,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:39:25,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:39:25,090 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:39:25,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:39:25,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:39:25,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:39:25,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:39:25,092 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:39:25,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:39:25,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:39:25,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:39:25,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:39:25,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:39:25,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:39:25,093 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:39:25,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:39:25,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:39:25,093 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:39:25,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:39:25,093 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:39:25,093 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:39:25,093 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:39:25,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:39:25,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:39:25,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:39:25,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:25,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:39:25,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:39:25,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:39:25,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:39:25,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:25,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:39:25,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:39:25,095 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:39:25,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:39:25,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:39:25,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:39:25,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:39:25,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:39:25,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:39:25,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:39:25,095 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 5055f39b9198ec38ad0f2881791eb80b1e4ab6fc763077f931bae502928055b4 [2024-11-28 03:39:25,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:39:25,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:39:25,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:39:25,463 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:39:25,464 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:39:25,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c [2024-11-28 03:39:28,635 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/data/0b597f6bf/091675218fae46fa8cded48773f54312/FLAG8e24568ec [2024-11-28 03:39:29,556 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:39:29,557 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c [2024-11-28 03:39:29,615 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/data/0b597f6bf/091675218fae46fa8cded48773f54312/FLAG8e24568ec [2024-11-28 03:39:29,640 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/data/0b597f6bf/091675218fae46fa8cded48773f54312 [2024-11-28 03:39:29,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:39:29,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:39:29,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:39:29,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:39:29,659 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:39:29,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:29" (1/1) ... [2024-11-28 03:39:29,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bbec48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:29, skipping insertion in model container [2024-11-28 03:39:29,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:29" (1/1) ... [2024-11-28 03:39:29,878 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:39:31,797 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c[382357,382370] [2024-11-28 03:39:31,834 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c[383339,383352] [2024-11-28 03:39:32,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:39:32,064 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:39:33,348 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c[382357,382370] [2024-11-28 03:39:33,351 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c[383339,383352] [2024-11-28 03:39:33,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:39:33,507 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:39:33,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33 WrapperNode [2024-11-28 03:39:33,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:39:33,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:39:33,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:39:33,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:39:33,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:33,589 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,002 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12692 [2024-11-28 03:39:34,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:39:34,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:39:34,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:39:34,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:39:34,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,168 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]. [2024-11-28 03:39:34,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,438 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,453 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:39:34,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:39:34,681 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:39:34,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:39:34,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (1/1) ... [2024-11-28 03:39:34,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:34,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:34,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:39:34,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:39:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:39:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-28 03:39:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-28 03:39:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 03:39:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 03:39:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-28 03:39:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-28 03:39:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-28 03:39:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-28 03:39:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-28 03:39:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-28 03:39:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-28 03:39:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-28 03:39:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-28 03:39:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-28 03:39:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:39:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:39:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:39:34,948 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:39:34,951 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:39:46,836 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2024-11-28 03:39:46,837 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:39:46,914 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:39:46,914 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-28 03:39:46,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:46 BoogieIcfgContainer [2024-11-28 03:39:46,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:39:46,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:39:46,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:39:46,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:39:46,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:39:29" (1/3) ... [2024-11-28 03:39:46,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2531513e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:46, skipping insertion in model container [2024-11-28 03:39:46,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:33" (2/3) ... [2024-11-28 03:39:46,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2531513e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:46, skipping insertion in model container [2024-11-28 03:39:46,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:46" (3/3) ... [2024-11-28 03:39:46,926 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.03.cil-1.c [2024-11-28 03:39:46,943 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:39:46,947 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label46+token_ring.03.cil-1.c that has 8 procedures, 2346 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2024-11-28 03:39:47,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:39:47,132 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@254650c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:39:47,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:39:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 2346 states, 2318 states have (on average 1.8559102674719585) internal successors, (4302), 2322 states have internal predecessors, (4302), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 03:39:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 03:39:47,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:47,167 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:47,167 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:47,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash 270754396, now seen corresponding path program 1 times [2024-11-28 03:39:47,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:47,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091118823] [2024-11-28 03:39:47,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:47,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:47,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:47,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091118823] [2024-11-28 03:39:47,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091118823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:47,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:47,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:39:47,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961937127] [2024-11-28 03:39:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:47,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:39:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:47,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:39:47,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:39:47,917 INFO L87 Difference]: Start difference. First operand has 2346 states, 2318 states have (on average 1.8559102674719585) internal successors, (4302), 2322 states have internal predecessors, (4302), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:48,756 INFO L93 Difference]: Finished difference Result 4841 states and 8925 transitions. [2024-11-28 03:39:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:39:48,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-28 03:39:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:48,787 INFO L225 Difference]: With dead ends: 4841 [2024-11-28 03:39:48,788 INFO L226 Difference]: Without dead ends: 2436 [2024-11-28 03:39:48,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:48,800 INFO L435 NwaCegarLoop]: 4211 mSDtfsCounter, 4423 mSDsluCounter, 8508 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4434 SdHoareTripleChecker+Valid, 12719 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:48,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4434 Valid, 12719 Invalid, 310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:39:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2024-11-28 03:39:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2423. [2024-11-28 03:39:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2377 states have (on average 1.831299957930164) internal successors, (4353), 2381 states have internal predecessors, (4353), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2024-11-28 03:39:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4414 transitions. [2024-11-28 03:39:49,028 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4414 transitions. Word has length 78 [2024-11-28 03:39:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:49,030 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 4414 transitions. [2024-11-28 03:39:49,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:49,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4414 transitions. [2024-11-28 03:39:49,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 03:39:49,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:49,038 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:49,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:39:49,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:49,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash 278401112, now seen corresponding path program 1 times [2024-11-28 03:39:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:49,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307912565] [2024-11-28 03:39:49,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:49,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:49,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:49,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307912565] [2024-11-28 03:39:49,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307912565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:49,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:49,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:49,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120065998] [2024-11-28 03:39:49,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:49,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:49,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:49,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:49,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:49,414 INFO L87 Difference]: Start difference. First operand 2423 states and 4414 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:50,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:50,267 INFO L93 Difference]: Finished difference Result 2895 states and 5135 transitions. [2024-11-28 03:39:50,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:50,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-28 03:39:50,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:50,288 INFO L225 Difference]: With dead ends: 2895 [2024-11-28 03:39:50,288 INFO L226 Difference]: Without dead ends: 2604 [2024-11-28 03:39:50,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:50,294 INFO L435 NwaCegarLoop]: 4260 mSDtfsCounter, 4347 mSDsluCounter, 12752 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 17012 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:50,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 17012 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:39:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2024-11-28 03:39:50,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2559. [2024-11-28 03:39:50,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2494 states have (on average 1.8163592622293505) internal successors, (4530), 2499 states have internal predecessors, (4530), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2024-11-28 03:39:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 4618 transitions. [2024-11-28 03:39:50,422 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 4618 transitions. Word has length 78 [2024-11-28 03:39:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:50,423 INFO L471 AbstractCegarLoop]: Abstraction has 2559 states and 4618 transitions. [2024-11-28 03:39:50,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 4618 transitions. [2024-11-28 03:39:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 03:39:50,430 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:50,430 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:50,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:39:50,431 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:50,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:50,431 INFO L85 PathProgramCache]: Analyzing trace with hash -138995494, now seen corresponding path program 1 times [2024-11-28 03:39:50,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:50,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834155920] [2024-11-28 03:39:50,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:50,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:50,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834155920] [2024-11-28 03:39:50,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834155920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:50,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:50,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:50,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032352761] [2024-11-28 03:39:50,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:50,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:50,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:50,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:50,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:50,710 INFO L87 Difference]: Start difference. First operand 2559 states and 4618 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:51,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:51,437 INFO L93 Difference]: Finished difference Result 3319 states and 5778 transitions. [2024-11-28 03:39:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:51,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-28 03:39:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:51,454 INFO L225 Difference]: With dead ends: 3319 [2024-11-28 03:39:51,454 INFO L226 Difference]: Without dead ends: 2892 [2024-11-28 03:39:51,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:51,458 INFO L435 NwaCegarLoop]: 4256 mSDtfsCounter, 4342 mSDsluCounter, 12740 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 16996 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:51,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4353 Valid, 16996 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:39:51,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2024-11-28 03:39:51,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2844. [2024-11-28 03:39:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2739 states have (on average 1.7900693683826214) internal successors, (4903), 2748 states have internal predecessors, (4903), 67 states have call successors, (67), 31 states have call predecessors, (67), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2024-11-28 03:39:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 5051 transitions. [2024-11-28 03:39:51,580 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 5051 transitions. Word has length 78 [2024-11-28 03:39:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:51,581 INFO L471 AbstractCegarLoop]: Abstraction has 2844 states and 5051 transitions. [2024-11-28 03:39:51,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 5051 transitions. [2024-11-28 03:39:51,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 03:39:51,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:51,588 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:51,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:39:51,589 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:51,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:51,589 INFO L85 PathProgramCache]: Analyzing trace with hash 540276760, now seen corresponding path program 1 times [2024-11-28 03:39:51,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:51,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791514462] [2024-11-28 03:39:51,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:51,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:51,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:51,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791514462] [2024-11-28 03:39:51,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791514462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:51,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:51,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:51,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779064032] [2024-11-28 03:39:51,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:51,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:51,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:51,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:51,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:51,817 INFO L87 Difference]: Start difference. First operand 2844 states and 5051 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:52,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:52,679 INFO L93 Difference]: Finished difference Result 4214 states and 7161 transitions. [2024-11-28 03:39:52,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:52,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-28 03:39:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:52,706 INFO L225 Difference]: With dead ends: 4214 [2024-11-28 03:39:52,706 INFO L226 Difference]: Without dead ends: 3502 [2024-11-28 03:39:52,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:52,713 INFO L435 NwaCegarLoop]: 4253 mSDtfsCounter, 4337 mSDsluCounter, 12731 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4348 SdHoareTripleChecker+Valid, 16984 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:52,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4348 Valid, 16984 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:39:52,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2024-11-28 03:39:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3447. [2024-11-28 03:39:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 3256 states have (on average 1.749078624078624) internal successors, (5695), 3279 states have internal predecessors, (5695), 115 states have call successors, (115), 55 states have call predecessors, (115), 74 states have return successors, (177), 120 states have call predecessors, (177), 113 states have call successors, (177) [2024-11-28 03:39:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 5987 transitions. [2024-11-28 03:39:52,903 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 5987 transitions. Word has length 78 [2024-11-28 03:39:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:52,903 INFO L471 AbstractCegarLoop]: Abstraction has 3447 states and 5987 transitions. [2024-11-28 03:39:52,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 5987 transitions. [2024-11-28 03:39:52,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 03:39:52,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:52,907 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:52,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:39:52,907 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:52,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:52,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1793115878, now seen corresponding path program 1 times [2024-11-28 03:39:52,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:52,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656668819] [2024-11-28 03:39:52,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:52,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:53,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656668819] [2024-11-28 03:39:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656668819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:53,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:53,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249625217] [2024-11-28 03:39:53,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:53,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:53,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:53,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:53,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:53,082 INFO L87 Difference]: Start difference. First operand 3447 states and 5987 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:53,983 INFO L93 Difference]: Finished difference Result 6325 states and 10500 transitions. [2024-11-28 03:39:53,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:53,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-28 03:39:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:54,016 INFO L225 Difference]: With dead ends: 6325 [2024-11-28 03:39:54,017 INFO L226 Difference]: Without dead ends: 5010 [2024-11-28 03:39:54,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:54,025 INFO L435 NwaCegarLoop]: 4248 mSDtfsCounter, 4436 mSDsluCounter, 12711 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4451 SdHoareTripleChecker+Valid, 16959 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:54,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4451 Valid, 16959 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:39:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2024-11-28 03:39:54,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 4710. [2024-11-28 03:39:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4710 states, 4337 states have (on average 1.6986396126354624) internal successors, (7367), 4406 states have internal predecessors, (7367), 203 states have call successors, (203), 103 states have call predecessors, (203), 168 states have return successors, (457), 216 states have call predecessors, (457), 201 states have call successors, (457) [2024-11-28 03:39:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 8027 transitions. [2024-11-28 03:39:54,465 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 8027 transitions. Word has length 78 [2024-11-28 03:39:54,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:54,467 INFO L471 AbstractCegarLoop]: Abstraction has 4710 states and 8027 transitions. [2024-11-28 03:39:54,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 8027 transitions. [2024-11-28 03:39:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 03:39:54,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:54,474 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:54,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:39:54,474 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:54,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:54,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1591291944, now seen corresponding path program 1 times [2024-11-28 03:39:54,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:54,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078648294] [2024-11-28 03:39:54,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:54,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:54,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:54,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078648294] [2024-11-28 03:39:54,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078648294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:54,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:54,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067389551] [2024-11-28 03:39:54,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:54,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:54,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:54,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:54,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:54,658 INFO L87 Difference]: Start difference. First operand 4710 states and 8027 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:55,654 INFO L93 Difference]: Finished difference Result 10404 states and 17374 transitions. [2024-11-28 03:39:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:55,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-28 03:39:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:55,713 INFO L225 Difference]: With dead ends: 10404 [2024-11-28 03:39:55,713 INFO L226 Difference]: Without dead ends: 7826 [2024-11-28 03:39:55,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:55,726 INFO L435 NwaCegarLoop]: 4244 mSDtfsCounter, 4349 mSDsluCounter, 12699 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 16943 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:55,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 16943 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:39:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2024-11-28 03:39:56,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 7257. [2024-11-28 03:39:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7257 states, 6474 states have (on average 1.642106889094841) internal successors, (10631), 6689 states have internal predecessors, (10631), 371 states have call successors, (371), 199 states have call predecessors, (371), 410 states have return successors, (1393), 400 states have call predecessors, (1393), 369 states have call successors, (1393) [2024-11-28 03:39:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7257 states to 7257 states and 12395 transitions. [2024-11-28 03:39:56,239 INFO L78 Accepts]: Start accepts. Automaton has 7257 states and 12395 transitions. Word has length 78 [2024-11-28 03:39:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:56,241 INFO L471 AbstractCegarLoop]: Abstraction has 7257 states and 12395 transitions. [2024-11-28 03:39:56,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 7257 states and 12395 transitions. [2024-11-28 03:39:56,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 03:39:56,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:56,259 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:56,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:39:56,259 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:56,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:56,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1030592166, now seen corresponding path program 1 times [2024-11-28 03:39:56,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:56,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977842210] [2024-11-28 03:39:56,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:56,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:56,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:56,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977842210] [2024-11-28 03:39:56,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977842210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:56,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446128952] [2024-11-28 03:39:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:56,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:56,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:56,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:56,428 INFO L87 Difference]: Start difference. First operand 7257 states and 12395 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:57,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:57,859 INFO L93 Difference]: Finished difference Result 18073 states and 31624 transitions. [2024-11-28 03:39:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:39:57,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-28 03:39:57,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:57,968 INFO L225 Difference]: With dead ends: 18073 [2024-11-28 03:39:57,968 INFO L226 Difference]: Without dead ends: 12948 [2024-11-28 03:39:57,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:57,995 INFO L435 NwaCegarLoop]: 4238 mSDtfsCounter, 4333 mSDsluCounter, 12683 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4348 SdHoareTripleChecker+Valid, 16921 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:57,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4348 Valid, 16921 Invalid, 534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:39:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12948 states. [2024-11-28 03:39:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12948 to 12609. [2024-11-28 03:39:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12609 states, 10860 states have (on average 1.5857274401473296) internal successors, (17221), 11529 states have internal predecessors, (17221), 691 states have call successors, (691), 391 states have call predecessors, (691), 1056 states have return successors, (4785), 752 states have call predecessors, (4785), 689 states have call successors, (4785) [2024-11-28 03:39:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12609 states to 12609 states and 22697 transitions. [2024-11-28 03:39:59,114 INFO L78 Accepts]: Start accepts. Automaton has 12609 states and 22697 transitions. Word has length 78 [2024-11-28 03:39:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:59,115 INFO L471 AbstractCegarLoop]: Abstraction has 12609 states and 22697 transitions. [2024-11-28 03:39:59,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:39:59,115 INFO L276 IsEmpty]: Start isEmpty. Operand 12609 states and 22697 transitions. [2024-11-28 03:39:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 03:39:59,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:59,127 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:59,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:39:59,127 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:59,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:59,128 INFO L85 PathProgramCache]: Analyzing trace with hash 230325084, now seen corresponding path program 1 times [2024-11-28 03:39:59,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:59,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789765059] [2024-11-28 03:39:59,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:59,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:59,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:59,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789765059] [2024-11-28 03:39:59,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789765059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:59,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:59,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:39:59,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559209944] [2024-11-28 03:39:59,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:59,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:39:59,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:59,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:39:59,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:39:59,206 INFO L87 Difference]: Start difference. First operand 12609 states and 22697 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:00,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:00,324 INFO L93 Difference]: Finished difference Result 28667 states and 51500 transitions. [2024-11-28 03:40:00,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:40:00,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-28 03:40:00,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:00,429 INFO L225 Difference]: With dead ends: 28667 [2024-11-28 03:40:00,429 INFO L226 Difference]: Without dead ends: 18191 [2024-11-28 03:40:00,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:40:00,482 INFO L435 NwaCegarLoop]: 4379 mSDtfsCounter, 4346 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 8693 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:00,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 8693 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:40:00,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18191 states. [2024-11-28 03:40:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18191 to 17348. [2024-11-28 03:40:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17348 states, 14824 states have (on average 1.54971667566109) internal successors, (22973), 15738 states have internal predecessors, (22973), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 1466 states have return successors, (6143), 1084 states have call predecessors, (6143), 1054 states have call successors, (6143) [2024-11-28 03:40:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17348 states to 17348 states and 30172 transitions. [2024-11-28 03:40:02,289 INFO L78 Accepts]: Start accepts. Automaton has 17348 states and 30172 transitions. Word has length 78 [2024-11-28 03:40:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:02,290 INFO L471 AbstractCegarLoop]: Abstraction has 17348 states and 30172 transitions. [2024-11-28 03:40:02,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:40:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 17348 states and 30172 transitions. [2024-11-28 03:40:02,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 03:40:02,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:02,489 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-11-28 03:40:02,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:40:02,492 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:02,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash 680632475, now seen corresponding path program 1 times [2024-11-28 03:40:02,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:02,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374327800] [2024-11-28 03:40:02,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:02,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 03:40:02,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:02,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374327800] [2024-11-28 03:40:02,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374327800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:02,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055657761] [2024-11-28 03:40:02,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:02,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:02,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:02,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:02,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:40:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:02,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:40:02,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:40:02,927 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:40:02,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055657761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:02,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:40:02,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-28 03:40:02,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815295382] [2024-11-28 03:40:02,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:02,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:02,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:02,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:02,929 INFO L87 Difference]: Start difference. First operand 17348 states and 30172 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:40:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:04,662 INFO L93 Difference]: Finished difference Result 47431 states and 82416 transitions. [2024-11-28 03:40:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:40:04,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 126 [2024-11-28 03:40:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:04,832 INFO L225 Difference]: With dead ends: 47431 [2024-11-28 03:40:04,832 INFO L226 Difference]: Without dead ends: 32216 [2024-11-28 03:40:04,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:04,884 INFO L435 NwaCegarLoop]: 4189 mSDtfsCounter, 4145 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4145 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:04,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4145 Valid, 4396 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:40:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32216 states. [2024-11-28 03:40:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32216 to 32114. [2024-11-28 03:40:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32114 states, 27124 states have (on average 1.5221206311753428) internal successors, (41286), 28949 states have internal predecessors, (41286), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 2932 states have return successors, (12169), 2051 states have call predecessors, (12169), 2054 states have call successors, (12169) [2024-11-28 03:40:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32114 states to 32114 states and 55511 transitions. [2024-11-28 03:40:07,593 INFO L78 Accepts]: Start accepts. Automaton has 32114 states and 55511 transitions. Word has length 126 [2024-11-28 03:40:07,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:07,593 INFO L471 AbstractCegarLoop]: Abstraction has 32114 states and 55511 transitions. [2024-11-28 03:40:07,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:40:07,594 INFO L276 IsEmpty]: Start isEmpty. Operand 32114 states and 55511 transitions. [2024-11-28 03:40:07,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 03:40:07,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:07,678 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-11-28 03:40:07,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:07,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:07,879 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:07,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:07,880 INFO L85 PathProgramCache]: Analyzing trace with hash 118010201, now seen corresponding path program 1 times [2024-11-28 03:40:07,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:07,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304508886] [2024-11-28 03:40:07,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:07,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 03:40:07,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:07,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304508886] [2024-11-28 03:40:07,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304508886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:07,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970559541] [2024-11-28 03:40:07,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:07,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:07,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:07,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:07,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:40:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:08,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:40:08,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:40:08,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:40:08,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970559541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:08,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:40:08,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-28 03:40:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062248446] [2024-11-28 03:40:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:08,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:08,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:08,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:08,230 INFO L87 Difference]: Start difference. First operand 32114 states and 55511 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:40:11,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:11,401 INFO L93 Difference]: Finished difference Result 91383 states and 158301 transitions. [2024-11-28 03:40:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:40:11,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 126 [2024-11-28 03:40:11,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:11,829 INFO L225 Difference]: With dead ends: 91383 [2024-11-28 03:40:11,829 INFO L226 Difference]: Without dead ends: 61402 [2024-11-28 03:40:11,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:11,970 INFO L435 NwaCegarLoop]: 4189 mSDtfsCounter, 4139 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:11,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4139 Valid, 4396 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:40:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61402 states. [2024-11-28 03:40:17,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61402 to 61202. [2024-11-28 03:40:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61202 states, 51330 states have (on average 1.504461328657705) internal successors, (77224), 54977 states have internal predecessors, (77224), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 5864 states have return successors, (24171), 3935 states have call predecessors, (24171), 4004 states have call successors, (24171) [2024-11-28 03:40:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61202 states to 61202 states and 105401 transitions. [2024-11-28 03:40:17,355 INFO L78 Accepts]: Start accepts. Automaton has 61202 states and 105401 transitions. Word has length 126 [2024-11-28 03:40:17,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:17,355 INFO L471 AbstractCegarLoop]: Abstraction has 61202 states and 105401 transitions. [2024-11-28 03:40:17,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:40:17,356 INFO L276 IsEmpty]: Start isEmpty. Operand 61202 states and 105401 transitions. [2024-11-28 03:40:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 03:40:17,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:17,444 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2024-11-28 03:40:17,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:17,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:40:17,648 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:17,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1923962729, now seen corresponding path program 1 times [2024-11-28 03:40:17,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:17,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29538485] [2024-11-28 03:40:17,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:17,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 03:40:17,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:17,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29538485] [2024-11-28 03:40:17,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29538485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:17,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125714954] [2024-11-28 03:40:17,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:17,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:17,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:17,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:17,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce3d0a6b-b9ef-411e-afea-ecb3bb5b5bcb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:40:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:17,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:40:17,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 03:40:17,967 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:40:17,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125714954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:17,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:40:17,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 03:40:17,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549997475] [2024-11-28 03:40:17,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:17,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:17,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:17,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:17,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:40:17,969 INFO L87 Difference]: Start difference. First operand 61202 states and 105401 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)