./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label42.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_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/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_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label42.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/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_777e6db7-900b-4f21-9349-cc51c44ee773/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 6a1d98a51bcc97ee19e0458934f0b894e85cf8f8042e38117bf0e9bc0c63c9ce --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:13:14,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:13:14,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:13:14,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:13:14,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:13:14,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:13:14,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:13:14,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:13:14,999 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:13:14,999 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:13:14,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:13:15,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:13:15,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:13:15,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:13:15,001 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:13:15,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:13:15,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:13:15,001 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:13:15,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:13:15,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:13:15,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:13:15,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:13:15,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:13:15,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:13:15,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:13:15,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:13:15,003 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:13:15,004 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:13:15,004 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:13:15,004 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:13:15,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:13:15,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:13:15,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:13:15,005 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:13:15,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:13:15,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:13:15,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:13:15,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:13:15,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:13:15,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:13:15,006 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:13:15,006 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:13:15,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:13:15,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:13:15,007 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:13:15,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:13:15,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:13:15,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:13:15,008 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_777e6db7-900b-4f21-9349-cc51c44ee773/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 -> 6a1d98a51bcc97ee19e0458934f0b894e85cf8f8042e38117bf0e9bc0c63c9ce [2024-11-28 04:13:15,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:13:15,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:13:15,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:13:15,435 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:13:15,436 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:13:15,438 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem02_label42.c [2024-11-28 04:13:19,882 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/data/d12eac18c/47ab821f410c422896fbaa8b2477ffd7/FLAGc10251678 [2024-11-28 04:13:20,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:13:20,406 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/sv-benchmarks/c/eca-rers2012/Problem02_label42.c [2024-11-28 04:13:20,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/data/d12eac18c/47ab821f410c422896fbaa8b2477ffd7/FLAGc10251678 [2024-11-28 04:13:20,512 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/data/d12eac18c/47ab821f410c422896fbaa8b2477ffd7 [2024-11-28 04:13:20,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:13:20,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:13:20,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:13:20,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:13:20,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:13:20,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:13:20" (1/1) ... [2024-11-28 04:13:20,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b00d584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:20, skipping insertion in model container [2024-11-28 04:13:20,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:13:20" (1/1) ... [2024-11-28 04:13:20,600 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:13:21,106 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_777e6db7-900b-4f21-9349-cc51c44ee773/sv-benchmarks/c/eca-rers2012/Problem02_label42.c[16787,16800] [2024-11-28 04:13:21,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:13:21,198 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:13:21,340 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_777e6db7-900b-4f21-9349-cc51c44ee773/sv-benchmarks/c/eca-rers2012/Problem02_label42.c[16787,16800] [2024-11-28 04:13:21,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:13:21,421 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:13:21,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21 WrapperNode [2024-11-28 04:13:21,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:13:21,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:13:21,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:13:21,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:13:21,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,592 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2024-11-28 04:13:21,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:13:21,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:13:21,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:13:21,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:13:21,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,623 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,652 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 04:13:21,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,682 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:13:21,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:13:21,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:13:21,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:13:21,728 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (1/1) ... [2024-11-28 04:13:21,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:13:21,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:21,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:13:21,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:13:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:13:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:13:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:13:21,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:13:21,935 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:13:21,938 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:13:24,321 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-28 04:13:24,322 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:13:24,355 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:13:24,355 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:13:24,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:13:24 BoogieIcfgContainer [2024-11-28 04:13:24,356 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:13:24,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:13:24,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:13:24,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:13:24,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:13:20" (1/3) ... [2024-11-28 04:13:24,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417d2683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:13:24, skipping insertion in model container [2024-11-28 04:13:24,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:21" (2/3) ... [2024-11-28 04:13:24,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417d2683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:13:24, skipping insertion in model container [2024-11-28 04:13:24,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:13:24" (3/3) ... [2024-11-28 04:13:24,371 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2024-11-28 04:13:24,396 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:13:24,399 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem02_label42.c that has 1 procedures, 227 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:13:24,493 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:13:24,521 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;@3e3ae37a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:13:24,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:13:24,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 226 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 04:13:24,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:24,547 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, 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 04:13:24,547 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:24,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:24,559 INFO L85 PathProgramCache]: Analyzing trace with hash 499493077, now seen corresponding path program 1 times [2024-11-28 04:13:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:24,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657444321] [2024-11-28 04:13:24,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:25,625 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 04:13:25,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:25,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657444321] [2024-11-28 04:13:25,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657444321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:25,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:25,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:13:25,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472967707] [2024-11-28 04:13:25,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:25,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:13:25,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:25,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:13:25,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:25,704 INFO L87 Difference]: Start difference. First operand has 227 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 226 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:27,196 INFO L93 Difference]: Finished difference Result 600 states and 1037 transitions. [2024-11-28 04:13:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:13:27,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-28 04:13:27,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:27,220 INFO L225 Difference]: With dead ends: 600 [2024-11-28 04:13:27,221 INFO L226 Difference]: Without dead ends: 309 [2024-11-28 04:13:27,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:27,234 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 66 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:27,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 171 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:13:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-28 04:13:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2024-11-28 04:13:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.3300653594771241) internal successors, (407), 306 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 407 transitions. [2024-11-28 04:13:27,312 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 407 transitions. Word has length 100 [2024-11-28 04:13:27,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:27,315 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 407 transitions. [2024-11-28 04:13:27,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 407 transitions. [2024-11-28 04:13:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:13:27,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:27,320 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:27,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:13:27,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:27,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:27,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1323076000, now seen corresponding path program 1 times [2024-11-28 04:13:27,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:27,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664252336] [2024-11-28 04:13:27,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:27,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:27,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:27,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664252336] [2024-11-28 04:13:27,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664252336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:27,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:13:27,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556937263] [2024-11-28 04:13:27,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:27,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:13:27,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:27,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:13:27,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:27,855 INFO L87 Difference]: Start difference. First operand 307 states and 407 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:29,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:29,036 INFO L93 Difference]: Finished difference Result 758 states and 1034 transitions. [2024-11-28 04:13:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:13:29,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-28 04:13:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:29,046 INFO L225 Difference]: With dead ends: 758 [2024-11-28 04:13:29,046 INFO L226 Difference]: Without dead ends: 453 [2024-11-28 04:13:29,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:29,050 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 64 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:29,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 248 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:13:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-28 04:13:29,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2024-11-28 04:13:29,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.2787610619469028) internal successors, (578), 452 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 578 transitions. [2024-11-28 04:13:29,091 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 578 transitions. Word has length 105 [2024-11-28 04:13:29,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:29,093 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 578 transitions. [2024-11-28 04:13:29,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:29,096 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 578 transitions. [2024-11-28 04:13:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:13:29,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:29,101 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:29,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:13:29,102 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:29,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:29,103 INFO L85 PathProgramCache]: Analyzing trace with hash 396760741, now seen corresponding path program 1 times [2024-11-28 04:13:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:29,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119254343] [2024-11-28 04:13:29,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:29,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:29,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:29,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119254343] [2024-11-28 04:13:29,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119254343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:29,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:29,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:13:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234286167] [2024-11-28 04:13:29,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:29,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:13:29,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:29,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:13:29,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:29,330 INFO L87 Difference]: Start difference. First operand 453 states and 578 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:30,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:30,457 INFO L93 Difference]: Finished difference Result 1325 states and 1691 transitions. [2024-11-28 04:13:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:13:30,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-28 04:13:30,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:30,468 INFO L225 Difference]: With dead ends: 1325 [2024-11-28 04:13:30,468 INFO L226 Difference]: Without dead ends: 874 [2024-11-28 04:13:30,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:30,477 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 185 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:30,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 79 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:13:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-11-28 04:13:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2024-11-28 04:13:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.2302405498281788) internal successors, (1074), 873 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1074 transitions. [2024-11-28 04:13:30,564 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1074 transitions. Word has length 117 [2024-11-28 04:13:30,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:30,564 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1074 transitions. [2024-11-28 04:13:30,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1074 transitions. [2024-11-28 04:13:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 04:13:30,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:30,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:30,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:13:30,579 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:30,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:30,584 INFO L85 PathProgramCache]: Analyzing trace with hash 279909752, now seen corresponding path program 1 times [2024-11-28 04:13:30,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:30,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903228588] [2024-11-28 04:13:30,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:30,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:30,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:30,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903228588] [2024-11-28 04:13:30,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903228588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:30,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:30,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:13:30,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124714847] [2024-11-28 04:13:30,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:30,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:13:30,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:30,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:13:30,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:30,889 INFO L87 Difference]: Start difference. First operand 874 states and 1074 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:31,687 INFO L93 Difference]: Finished difference Result 2594 states and 3192 transitions. [2024-11-28 04:13:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:13:31,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-11-28 04:13:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:31,697 INFO L225 Difference]: With dead ends: 2594 [2024-11-28 04:13:31,698 INFO L226 Difference]: Without dead ends: 1722 [2024-11-28 04:13:31,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:31,701 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 63 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:31,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 290 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:13:31,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2024-11-28 04:13:31,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1716. [2024-11-28 04:13:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1715 states have (on average 1.1900874635568512) internal successors, (2041), 1715 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2041 transitions. [2024-11-28 04:13:31,784 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2041 transitions. Word has length 130 [2024-11-28 04:13:31,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:31,786 INFO L471 AbstractCegarLoop]: Abstraction has 1716 states and 2041 transitions. [2024-11-28 04:13:31,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2041 transitions. [2024-11-28 04:13:31,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 04:13:31,794 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:31,794 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 04:13:31,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:13:31,795 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:31,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash -266021720, now seen corresponding path program 1 times [2024-11-28 04:13:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683337129] [2024-11-28 04:13:31,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:13:32,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:32,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683337129] [2024-11-28 04:13:32,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683337129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:32,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:32,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:13:32,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844720353] [2024-11-28 04:13:32,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:32,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:13:32,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:32,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:13:32,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:32,032 INFO L87 Difference]: Start difference. First operand 1716 states and 2041 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:32,820 INFO L93 Difference]: Finished difference Result 3852 states and 4554 transitions. [2024-11-28 04:13:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:13:32,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-28 04:13:32,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:32,832 INFO L225 Difference]: With dead ends: 3852 [2024-11-28 04:13:32,833 INFO L226 Difference]: Without dead ends: 1856 [2024-11-28 04:13:32,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:32,837 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 158 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:32,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 66 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:13:32,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2024-11-28 04:13:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1854. [2024-11-28 04:13:32,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1853 states have (on average 1.119805720453319) internal successors, (2075), 1853 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2075 transitions. [2024-11-28 04:13:32,930 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2075 transitions. Word has length 146 [2024-11-28 04:13:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:32,931 INFO L471 AbstractCegarLoop]: Abstraction has 1854 states and 2075 transitions. [2024-11-28 04:13:32,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2075 transitions. [2024-11-28 04:13:32,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 04:13:32,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:32,937 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, 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, 1] [2024-11-28 04:13:32,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:13:32,938 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:32,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:32,939 INFO L85 PathProgramCache]: Analyzing trace with hash -398781840, now seen corresponding path program 1 times [2024-11-28 04:13:32,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:32,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137098527] [2024-11-28 04:13:32,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:32,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:33,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137098527] [2024-11-28 04:13:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137098527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:33,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:33,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:13:33,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864811099] [2024-11-28 04:13:33,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:33,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:13:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:33,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:13:33,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:33,240 INFO L87 Difference]: Start difference. First operand 1854 states and 2075 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:33,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:33,997 INFO L93 Difference]: Finished difference Result 4127 states and 4671 transitions. [2024-11-28 04:13:33,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:13:33,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-28 04:13:33,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:34,009 INFO L225 Difference]: With dead ends: 4127 [2024-11-28 04:13:34,010 INFO L226 Difference]: Without dead ends: 2275 [2024-11-28 04:13:34,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:34,017 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 69 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:34,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 211 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:13:34,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2024-11-28 04:13:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2274. [2024-11-28 04:13:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 2273 states have (on average 1.1139463264408271) internal successors, (2532), 2273 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 2532 transitions. [2024-11-28 04:13:34,096 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 2532 transitions. Word has length 147 [2024-11-28 04:13:34,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:34,097 INFO L471 AbstractCegarLoop]: Abstraction has 2274 states and 2532 transitions. [2024-11-28 04:13:34,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:34,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 2532 transitions. [2024-11-28 04:13:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 04:13:34,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:34,103 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 04:13:34,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:13:34,104 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:34,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:34,105 INFO L85 PathProgramCache]: Analyzing trace with hash 770816786, now seen corresponding path program 1 times [2024-11-28 04:13:34,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:34,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786813615] [2024-11-28 04:13:34,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:34,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 04:13:34,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:34,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786813615] [2024-11-28 04:13:34,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786813615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:34,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:34,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:13:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728767650] [2024-11-28 04:13:34,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:34,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:13:34,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:34,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:13:34,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:34,303 INFO L87 Difference]: Start difference. First operand 2274 states and 2532 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:34,673 INFO L93 Difference]: Finished difference Result 4111 states and 4568 transitions. [2024-11-28 04:13:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:13:34,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-11-28 04:13:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:34,681 INFO L225 Difference]: With dead ends: 4111 [2024-11-28 04:13:34,681 INFO L226 Difference]: Without dead ends: 1697 [2024-11-28 04:13:34,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:34,685 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 171 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:34,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 19 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:13:34,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-11-28 04:13:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1697. [2024-11-28 04:13:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1696 states have (on average 1.067806603773585) internal successors, (1811), 1696 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:34,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 1811 transitions. [2024-11-28 04:13:34,733 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 1811 transitions. Word has length 160 [2024-11-28 04:13:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:34,734 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 1811 transitions. [2024-11-28 04:13:34,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:34,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 1811 transitions. [2024-11-28 04:13:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-28 04:13:34,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:34,740 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:34,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:13:34,741 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:34,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1025198346, now seen corresponding path program 1 times [2024-11-28 04:13:34,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:34,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897682327] [2024-11-28 04:13:34,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 04:13:34,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:34,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897682327] [2024-11-28 04:13:34,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897682327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:34,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:34,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:13:34,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636736574] [2024-11-28 04:13:34,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:34,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:13:34,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:34,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:13:34,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:34,985 INFO L87 Difference]: Start difference. First operand 1697 states and 1811 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:35,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:35,574 INFO L93 Difference]: Finished difference Result 3812 states and 4074 transitions. [2024-11-28 04:13:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:13:35,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2024-11-28 04:13:35,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:35,581 INFO L225 Difference]: With dead ends: 3812 [2024-11-28 04:13:35,581 INFO L226 Difference]: Without dead ends: 1134 [2024-11-28 04:13:35,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:35,585 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 95 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:35,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 209 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:13:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2024-11-28 04:13:35,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2024-11-28 04:13:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 1.0467784642541924) internal successors, (1186), 1133 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:35,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1186 transitions. [2024-11-28 04:13:35,623 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1186 transitions. Word has length 194 [2024-11-28 04:13:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:35,624 INFO L471 AbstractCegarLoop]: Abstraction has 1134 states and 1186 transitions. [2024-11-28 04:13:35,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1186 transitions. [2024-11-28 04:13:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-28 04:13:35,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:35,629 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:13:35,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:13:35,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:35,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash -409226142, now seen corresponding path program 1 times [2024-11-28 04:13:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:35,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209636435] [2024-11-28 04:13:35,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:35,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-28 04:13:35,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:35,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209636435] [2024-11-28 04:13:35,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209636435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:35,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:35,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:13:35,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119690685] [2024-11-28 04:13:35,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:35,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:13:35,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:35,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:13:35,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:35,943 INFO L87 Difference]: Start difference. First operand 1134 states and 1186 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:36,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:36,478 INFO L93 Difference]: Finished difference Result 2124 states and 2227 transitions. [2024-11-28 04:13:36,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:13:36,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2024-11-28 04:13:36,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:36,481 INFO L225 Difference]: With dead ends: 2124 [2024-11-28 04:13:36,481 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:13:36,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:36,485 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 55 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:36,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 170 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:13:36,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:13:36,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:13:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:13:36,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 237 [2024-11-28 04:13:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:36,489 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:13:36,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:13:36,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:13:36,493 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:13:36,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:13:36,497 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:36,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 04:13:36,728 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:13:36,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:13:36 BoogieIcfgContainer [2024-11-28 04:13:36,762 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:13:36,763 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:13:36,763 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:13:36,763 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:13:36,763 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:13:24" (3/4) ... [2024-11-28 04:13:36,766 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:13:36,792 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 04:13:36,797 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 04:13:36,798 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 04:13:36,799 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 04:13:37,007 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:13:37,008 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:13:37,008 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:13:37,012 INFO L158 Benchmark]: Toolchain (without parser) took 16488.00ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 90.9MB in the beginning and 140.3MB in the end (delta: -49.4MB). Peak memory consumption was 106.3MB. Max. memory is 16.1GB. [2024-11-28 04:13:37,012 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 117.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:13:37,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 900.51ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 65.1MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 04:13:37,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 167.09ms. Allocated memory is still 117.4MB. Free memory was 65.1MB in the beginning and 60.0MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:13:37,014 INFO L158 Benchmark]: Boogie Preprocessor took 130.97ms. Allocated memory is still 117.4MB. Free memory was 60.0MB in the beginning and 55.3MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:13:37,015 INFO L158 Benchmark]: RCFGBuilder took 2630.17ms. Allocated memory is still 117.4MB. Free memory was 55.0MB in the beginning and 84.1MB in the end (delta: -29.1MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2024-11-28 04:13:37,016 INFO L158 Benchmark]: TraceAbstraction took 12403.03ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 83.3MB in the beginning and 57.5MB in the end (delta: 25.9MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. [2024-11-28 04:13:37,017 INFO L158 Benchmark]: Witness Printer took 245.28ms. Allocated memory is still 176.2MB. Free memory was 57.5MB in the beginning and 140.3MB in the end (delta: -82.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:13:37,019 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 117.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 900.51ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 65.1MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 167.09ms. Allocated memory is still 117.4MB. Free memory was 65.1MB in the beginning and 60.0MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 130.97ms. Allocated memory is still 117.4MB. Free memory was 60.0MB in the beginning and 55.3MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2630.17ms. Allocated memory is still 117.4MB. Free memory was 55.0MB in the beginning and 84.1MB in the end (delta: -29.1MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12403.03ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 83.3MB in the beginning and 57.5MB in the end (delta: 25.9MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. * Witness Printer took 245.28ms. Allocated memory is still 176.2MB. Free memory was 57.5MB in the beginning and 140.3MB in the end (delta: -82.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 482]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.0s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 926 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 926 mSDsluCounter, 1463 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 594 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2949 IncrementalHoareTripleChecker+Invalid, 3543 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 594 mSolverCounterUnsat, 1340 mSDtfsCounter, 2949 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2274occurred in iteration=6, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1336 NumberOfCodeBlocks, 1336 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1327 ConstructedInterpolants, 0 QuantifiedInterpolants, 2623 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 633/633 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((a28 == 10) && (a19 == 1)) || ((a17 <= 8) && (a28 <= 7))) || (((a25 == 1) && (a17 <= 8)) && (a19 == 1))) || (((a19 != 1) && (a17 <= 8)) && (a28 <= 10))) || (((9 <= a28) && (a17 <= 8)) && (a28 <= 10))) RESULT: Ultimate proved your program to be correct! [2024-11-28 04:13:37,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_777e6db7-900b-4f21-9349-cc51c44ee773/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE