./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU --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 c7c4bef8c60b810569a22d8a73144498437260dfbc0e4b7320d169bed033790e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:38,248 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:38,369 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:09:38,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:38,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:38,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:38,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:38,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:38,425 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:38,426 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:38,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:38,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:38,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:38,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:38,432 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:38,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:38,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:09:38,434 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:38,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:38,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:38,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:38,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:09:38,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:38,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:09:38,437 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:38,438 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:38,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:38,439 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:38,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:38,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:38,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:38,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:38,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:38,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:38,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:38,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:09:38,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:38,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:38,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:38,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:38,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:38,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:38,447 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7c4bef8c60b810569a22d8a73144498437260dfbc0e4b7320d169bed033790e [2024-10-31 22:09:38,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:39,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:39,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:39,037 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:39,037 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:39,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c Unable to find full path for "g++" [2024-10-31 22:09:41,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:42,585 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:42,588 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c [2024-10-31 22:09:42,658 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/data/2a22df8bc/e0085186b2984580b349ef1e5f6de6d9/FLAG0dfe56ff4 [2024-10-31 22:09:42,682 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/data/2a22df8bc/e0085186b2984580b349ef1e5f6de6d9 [2024-10-31 22:09:42,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:42,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:42,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:42,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:42,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:42,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:42" (1/1) ... [2024-10-31 22:09:42,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1407e547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:42, skipping insertion in model container [2024-10-31 22:09:42,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:42" (1/1) ... [2024-10-31 22:09:42,968 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:45,660 WARN L251 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_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[381679,381692] [2024-10-31 22:09:45,705 WARN L251 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_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[383339,383352] [2024-10-31 22:09:45,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:45,959 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:47,447 WARN L251 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_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[381679,381692] [2024-10-31 22:09:47,452 WARN L251 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_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[383339,383352] [2024-10-31 22:09:47,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:47,538 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:47,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47 WrapperNode [2024-10-31 22:09:47,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:47,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:47,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:47,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:47,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:47,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,101 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12639 [2024-10-31 22:09:48,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:48,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:48,103 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:48,103 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:48,116 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,335 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]. [2024-10-31 22:09:48,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:48,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:48,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:48,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:48,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (1/1) ... [2024-10-31 22:09:48,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:48,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:48,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:48,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1e4d48-92e9-4f94-8fd1-21c11aa92867/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-31 22:09:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-31 22:09:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-31 22:09:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-31 22:09:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-31 22:09:49,038 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-31 22:09:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 22:09:49,039 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 22:09:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-31 22:09:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-31 22:09:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-31 22:09:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-31 22:09:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:09:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-31 22:09:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-31 22:09:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:49,302 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:49,309 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:00,984 INFO L? ?]: Removed 1699 outVars from TransFormulas that were not future-live. [2024-10-31 22:10:00,984 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:01,061 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:01,064 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:10:01,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:01 BoogieIcfgContainer [2024-10-31 22:10:01,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:01,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:01,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:01,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:01,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:42" (1/3) ... [2024-10-31 22:10:01,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad4e07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:01, skipping insertion in model container [2024-10-31 22:10:01,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:47" (2/3) ... [2024-10-31 22:10:01,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad4e07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:01, skipping insertion in model container [2024-10-31 22:10:01,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:01" (3/3) ... [2024-10-31 22:10:01,076 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.02.cil-2.c [2024-10-31 22:10:01,094 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:01,094 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:10:01,223 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:01,229 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;@50b8b058, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:01,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:10:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 2326 states, 2298 states have (on average 1.8563968668407311) internal successors, (4266), 2303 states have internal predecessors, (4266), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-31 22:10:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-31 22:10:01,259 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:01,260 INFO L215 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] [2024-10-31 22:10:01,260 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:01,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:01,266 INFO L85 PathProgramCache]: Analyzing trace with hash 931332088, now seen corresponding path program 1 times [2024-10-31 22:10:01,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:01,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551149433] [2024-10-31 22:10:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:01,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:10:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 22:10:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 22:10:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 22:10:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:01,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:01,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551149433] [2024-10-31 22:10:01,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551149433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:01,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:01,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:10:01,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807726616] [2024-10-31 22:10:01,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:01,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:01,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:01,889 INFO L87 Difference]: Start difference. First operand has 2326 states, 2298 states have (on average 1.8563968668407311) internal successors, (4266), 2303 states have internal predecessors, (4266), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:03,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:03,406 INFO L93 Difference]: Finished difference Result 4833 states and 8896 transitions. [2024-10-31 22:10:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:10:03,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-10-31 22:10:03,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:03,448 INFO L225 Difference]: With dead ends: 4833 [2024-10-31 22:10:03,448 INFO L226 Difference]: Without dead ends: 2447 [2024-10-31 22:10:03,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:10:03,461 INFO L432 NwaCegarLoop]: 4156 mSDtfsCounter, 4455 mSDsluCounter, 12455 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4464 SdHoareTripleChecker+Valid, 16611 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:03,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4464 Valid, 16611 Invalid, 667 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 22:10:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2024-10-31 22:10:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2382. [2024-10-31 22:10:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2338 states have (on average 1.8319076133447392) internal successors, (4283), 2342 states have internal predecessors, (4283), 29 states have call successors, (29), 13 states have call predecessors, (29), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2024-10-31 22:10:03,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4342 transitions. [2024-10-31 22:10:03,622 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4342 transitions. Word has length 69 [2024-10-31 22:10:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:03,622 INFO L471 AbstractCegarLoop]: Abstraction has 2382 states and 4342 transitions. [2024-10-31 22:10:03,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4342 transitions. [2024-10-31 22:10:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-31 22:10:03,626 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:03,627 INFO L215 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] [2024-10-31 22:10:03,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:03,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:03,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:03,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1034046452, now seen corresponding path program 1 times [2024-10-31 22:10:03,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:03,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608706767] [2024-10-31 22:10:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:03,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:10:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 22:10:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 22:10:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 22:10:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:03,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:03,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608706767] [2024-10-31 22:10:03,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608706767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:03,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:03,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:10:03,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909571885] [2024-10-31 22:10:03,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:03,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:10:03,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:03,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:10:03,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:10:03,927 INFO L87 Difference]: Start difference. First operand 2382 states and 4342 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:05,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:05,608 INFO L93 Difference]: Finished difference Result 2853 states and 5045 transitions. [2024-10-31 22:10:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:10:05,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-10-31 22:10:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:05,623 INFO L225 Difference]: With dead ends: 2853 [2024-10-31 22:10:05,623 INFO L226 Difference]: Without dead ends: 2602 [2024-10-31 22:10:05,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:10:05,627 INFO L432 NwaCegarLoop]: 4178 mSDtfsCounter, 4381 mSDsluCounter, 16537 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4390 SdHoareTripleChecker+Valid, 20715 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:05,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4390 Valid, 20715 Invalid, 1014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-31 22:10:05,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2024-10-31 22:10:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2499. [2024-10-31 22:10:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2437 states have (on average 1.816988100123102) internal successors, (4428), 2442 states have internal predecessors, (4428), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2024-10-31 22:10:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 4511 transitions. [2024-10-31 22:10:05,736 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 4511 transitions. Word has length 69 [2024-10-31 22:10:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:05,736 INFO L471 AbstractCegarLoop]: Abstraction has 2499 states and 4511 transitions. [2024-10-31 22:10:05,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 4511 transitions. [2024-10-31 22:10:05,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-31 22:10:05,740 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:05,740 INFO L215 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] [2024-10-31 22:10:05,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:10:05,741 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:05,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1874135434, now seen corresponding path program 1 times [2024-10-31 22:10:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:05,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156258277] [2024-10-31 22:10:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:05,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:05,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:10:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:05,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 22:10:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:05,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 22:10:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:05,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 22:10:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:05,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:05,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156258277] [2024-10-31 22:10:05,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156258277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:05,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:05,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:10:05,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604160815] [2024-10-31 22:10:05,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:05,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:10:05,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:05,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:10:05,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:10:05,995 INFO L87 Difference]: Start difference. First operand 2499 states and 4511 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)