./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/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_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/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_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/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 c77578a373441dc4befdd6b2c62472e20adb967aa702c242a875876828ccf992 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:17,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:17,958 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:10:17,964 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:17,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:18,006 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:18,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:18,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:18,008 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:18,010 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:18,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:18,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:18,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:18,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:18,015 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:18,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:18,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:10:18,016 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:18,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:18,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:18,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:18,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:10:18,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:18,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:10:18,023 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:18,023 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:18,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:10:18,023 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:18,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:18,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:18,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:18,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:18,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:18,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:18,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:18,026 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:10:18,026 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:18,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:18,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:18,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:18,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:18,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:18,030 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_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c77578a373441dc4befdd6b2c62472e20adb967aa702c242a875876828ccf992 [2024-10-31 22:10:18,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:18,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:18,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:18,371 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:18,372 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:18,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c Unable to find full path for "g++" [2024-10-31 22:10:20,510 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:21,245 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:21,248 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c [2024-10-31 22:10:21,306 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU/data/8ad298024/d6cf40b14dfc4d84b36cf607e8162c00/FLAGbc3614e3c [2024-10-31 22:10:21,568 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU/data/8ad298024/d6cf40b14dfc4d84b36cf607e8162c00 [2024-10-31 22:10:21,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:21,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:21,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:21,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:21,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:21,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:21,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767ecc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:21, skipping insertion in model container [2024-10-31 22:10:21,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:21" (1/1) ... [2024-10-31 22:10:21,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:24,410 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_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[380323,380336] [2024-10-31 22:10:24,446 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_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[383339,383352] [2024-10-31 22:10:24,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:24,667 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:26,010 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_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[380323,380336] [2024-10-31 22:10:26,017 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_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-1.c[383339,383352] [2024-10-31 22:10:26,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:26,090 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:26,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26 WrapperNode [2024-10-31 22:10:26,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:26,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:26,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:26,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:26,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:26,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:26,543 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12753 [2024-10-31 22:10:26,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:26,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:26,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:26,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:26,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:26,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:26,623 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:26,716 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 22:10:26,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:26,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:27,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:27,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:27,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:27,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:27,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:27,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:27,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:27,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:27,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (1/1) ... [2024-10-31 22:10:27,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:27,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:27,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:27,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9501e23-5c8f-46ba-a1a2-e1f88e50fd88/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-31 22:10:27,533 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-31 22:10:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 22:10:27,533 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 22:10:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-31 22:10:27,533 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-31 22:10:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-31 22:10:27,533 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-31 22:10:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-31 22:10:27,534 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-31 22:10:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-31 22:10:27,534 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-31 22:10:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:27,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:27,637 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:27,640 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:37,947 INFO L? ?]: Removed 1707 outVars from TransFormulas that were not future-live. [2024-10-31 22:10:37,948 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:37,997 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:37,997 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-31 22:10:37,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:37 BoogieIcfgContainer [2024-10-31 22:10:37,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:38,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:38,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:38,004 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:38,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:21" (1/3) ... [2024-10-31 22:10:38,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b4526d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:38, skipping insertion in model container [2024-10-31 22:10:38,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:26" (2/3) ... [2024-10-31 22:10:38,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b4526d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:38, skipping insertion in model container [2024-10-31 22:10:38,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:37" (3/3) ... [2024-10-31 22:10:38,008 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.04.cil-1.c [2024-10-31 22:10:38,028 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:38,028 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:10:38,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:38,186 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;@29708cf7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:38,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:10:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 2370 states, 2343 states have (on average 1.8523260776781905) internal successors, (4340), 2346 states have internal predecessors, (4340), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-31 22:10:38,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 22:10:38,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:38,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:38,220 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:38,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:38,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1995785756, now seen corresponding path program 1 times [2024-10-31 22:10:38,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:38,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101140671] [2024-10-31 22:10:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:38,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:10:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:10:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:10:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:10:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:38,774 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 22:10:38,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:38,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101140671] [2024-10-31 22:10:38,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101140671] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:38,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:38,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:10:38,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354771664] [2024-10-31 22:10:38,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:38,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:38,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:38,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:38,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:38,834 INFO L87 Difference]: Start difference. First operand has 2370 states, 2343 states have (on average 1.8523260776781905) internal successors, (4340), 2346 states have internal predecessors, (4340), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:40,100 INFO L93 Difference]: Finished difference Result 4788 states and 8834 transitions. [2024-10-31 22:10:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-10-31 22:10:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:40,131 INFO L225 Difference]: With dead ends: 4788 [2024-10-31 22:10:40,131 INFO L226 Difference]: Without dead ends: 2357 [2024-10-31 22:10:40,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:10:40,149 INFO L432 NwaCegarLoop]: 4199 mSDtfsCounter, 443 mSDsluCounter, 12267 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 16466 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:40,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 16466 Invalid, 460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:10:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2024-10-31 22:10:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2303. [2024-10-31 22:10:40,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2277 states have (on average 1.8414580588493632) internal successors, (4193), 2279 states have internal predecessors, (4193), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-31 22:10:40,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 4229 transitions. [2024-10-31 22:10:40,305 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 4229 transitions. Word has length 90 [2024-10-31 22:10:40,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:40,306 INFO L471 AbstractCegarLoop]: Abstraction has 2303 states and 4229 transitions. [2024-10-31 22:10:40,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:40,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 4229 transitions. [2024-10-31 22:10:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 22:10:40,310 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:40,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:40,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:40,313 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:40,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:40,314 INFO L85 PathProgramCache]: Analyzing trace with hash -937947678, now seen corresponding path program 1 times [2024-10-31 22:10:40,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:40,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442623021] [2024-10-31 22:10:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:40,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:10:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:10:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:10:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:10:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:40,646 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 22:10:40,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442623021] [2024-10-31 22:10:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442623021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:40,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:10:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133530575] [2024-10-31 22:10:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:40,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:40,656 INFO L87 Difference]: Start difference. First operand 2303 states and 4229 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:42,527 INFO L93 Difference]: Finished difference Result 2753 states and 4926 transitions. [2024-10-31 22:10:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:10:42,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-10-31 22:10:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:42,549 INFO L225 Difference]: With dead ends: 2753 [2024-10-31 22:10:42,550 INFO L226 Difference]: Without dead ends: 2583 [2024-10-31 22:10:42,553 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 22:10:42,554 INFO L432 NwaCegarLoop]: 4116 mSDtfsCounter, 4603 mSDsluCounter, 12334 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 16450 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:42,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4614 Valid, 16450 Invalid, 997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-31 22:10:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2024-10-31 22:10:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2476. [2024-10-31 22:10:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2430 states have (on average 1.8213991769547324) internal successors, (4426), 2433 states have internal predecessors, (4426), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2024-10-31 22:10:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4491 transitions. [2024-10-31 22:10:42,685 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4491 transitions. Word has length 90 [2024-10-31 22:10:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:42,686 INFO L471 AbstractCegarLoop]: Abstraction has 2476 states and 4491 transitions. [2024-10-31 22:10:42,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:42,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4491 transitions. [2024-10-31 22:10:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 22:10:42,696 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:42,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:42,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:10:42,700 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:42,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2112607130, now seen corresponding path program 1 times [2024-10-31 22:10:42,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:42,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478015923] [2024-10-31 22:10:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:42,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:42,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:42,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:10:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:43,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:10:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:43,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:10:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:43,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:10:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:43,097 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 22:10:43,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:43,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478015923] [2024-10-31 22:10:43,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478015923] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:43,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:43,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:10:43,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077978725] [2024-10-31 22:10:43,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:43,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:10:43,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:10:43,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:10:43,105 INFO L87 Difference]: Start difference. First operand 2476 states and 4491 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:45,628 INFO L93 Difference]: Finished difference Result 3156 states and 5538 transitions. [2024-10-31 22:10:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:10:45,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-10-31 22:10:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:45,643 INFO L225 Difference]: With dead ends: 3156 [2024-10-31 22:10:45,643 INFO L226 Difference]: Without dead ends: 2813 [2024-10-31 22:10:45,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:10:45,648 INFO L432 NwaCegarLoop]: 4231 mSDtfsCounter, 4606 mSDsluCounter, 16725 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 20956 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:45,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 20956 Invalid, 1524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-31 22:10:45,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2024-10-31 22:10:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2638. [2024-10-31 22:10:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2572 states have (on average 1.802877138413686) internal successors, (4637), 2576 states have internal predecessors, (4637), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2024-10-31 22:10:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 4730 transitions. [2024-10-31 22:10:45,782 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 4730 transitions. Word has length 90 [2024-10-31 22:10:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:45,782 INFO L471 AbstractCegarLoop]: Abstraction has 2638 states and 4730 transitions. [2024-10-31 22:10:45,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:45,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 4730 transitions. [2024-10-31 22:10:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 22:10:45,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:45,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:45,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:10:45,786 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:45,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:45,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1225384284, now seen corresponding path program 1 times [2024-10-31 22:10:45,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:45,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940215419] [2024-10-31 22:10:45,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:45,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:45,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:46,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:10:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:46,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:10:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:46,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:10:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:46,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:10:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:46,121 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 22:10:46,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940215419] [2024-10-31 22:10:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940215419] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:46,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:46,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:10:46,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736390562] [2024-10-31 22:10:46,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:46,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:10:46,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:10:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:10:46,132 INFO L87 Difference]: Start difference. First operand 2638 states and 4730 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)