./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 02d0ab19c61564f5abc0709934811896521a72f96ec1b9a0c41f20d28a391c3e --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:31:06,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:31:06,349 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:31:06,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:31:06,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:31:06,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:31:06,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:31:06,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:31:06,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:31:06,371 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:31:06,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:31:06,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:31:06,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:31:06,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:31:06,372 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:31:06,372 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:31:06,373 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:31:06,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:31:06,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:31:06,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:31:06,374 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:31:06,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:31:06,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:31:06,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:31:06,374 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 -> 02d0ab19c61564f5abc0709934811896521a72f96ec1b9a0c41f20d28a391c3e [2025-01-09 04:31:06,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:31:06,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:31:06,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:31:06,612 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:31:06,612 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:31:06,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c [2025-01-09 04:31:07,824 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/05faa307f/b2184e03d0fd470fa296743713a0ab01/FLAG6e1be1f62 [2025-01-09 04:31:08,225 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:31:08,226 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c [2025-01-09 04:31:08,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/05faa307f/b2184e03d0fd470fa296743713a0ab01/FLAG6e1be1f62 [2025-01-09 04:31:08,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/05faa307f/b2184e03d0fd470fa296743713a0ab01 [2025-01-09 04:31:08,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:31:08,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:31:08,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:31:08,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:31:08,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:31:08,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:31:08" (1/1) ... [2025-01-09 04:31:08,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc4196b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:08, skipping insertion in model container [2025-01-09 04:31:08,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:31:08" (1/1) ... [2025-01-09 04:31:08,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:31:08,650 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c[1674,1687] [2025-01-09 04:31:09,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:31:09,556 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:31:09,563 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.bug1.i","-S") [42] [2025-01-09 04:31:09,567 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c[1674,1687] [2025-01-09 04:31:10,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:31:10,240 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:31:10,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10 WrapperNode [2025-01-09 04:31:10,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:31:10,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:31:10,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:31:10,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:31:10,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:10,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:12,123 INFO L138 Inliner]: procedures = 57, calls = 18490, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40479 [2025-01-09 04:31:12,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:31:12,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:31:12,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:31:12,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:31:12,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:12,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:12,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:12,583 INFO L175 MemorySlicer]: Split 14318 memory accesses to 17 slices as follows [2, 8, 4, 2784, 3812, 2400, 1676, 1252, 852, 326, 429, 325, 2, 429, 7, 8, 2]. 27 percent of accesses are in the largest equivalence class. The 652 initializations are split as follows [2, 0, 0, 96, 96, 8, 8, 4, 4, 108, 108, 108, 0, 108, 2, 0, 0]. The 661 writes are split as follows [0, 4, 0, 96, 96, 8, 8, 4, 4, 109, 107, 109, 1, 107, 3, 4, 1]. [2025-01-09 04:31:12,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:12,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:13,819 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:13,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:14,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:14,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:14,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:14,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:31:14,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:31:14,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:31:14,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:31:14,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (1/1) ... [2025-01-09 04:31:14,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:31:14,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:31:14,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 04:31:14,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2025-01-09 04:31:14,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2025-01-09 04:31:14,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2025-01-09 04:31:14,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2025-01-09 04:31:14,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2025-01-09 04:31:14,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-01-09 04:31:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2025-01-09 04:31:14,553 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2025-01-09 04:31:14,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-01-09 04:31:14,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-01-09 04:31:14,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2025-01-09 04:31:14,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 04:31:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 04:31:14,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 04:31:14,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-09 04:31:14,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-01-09 04:31:14,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2025-01-09 04:31:14,558 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 04:31:14,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-01-09 04:31:14,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-01-09 04:31:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-01-09 04:31:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-01-09 04:31:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-01-09 04:31:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-01-09 04:31:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-01-09 04:31:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-01-09 04:31:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-01-09 04:31:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:31:14,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:31:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2025-01-09 04:31:14,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2025-01-09 04:31:14,559 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2025-01-09 04:31:14,559 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2025-01-09 04:31:14,560 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2025-01-09 04:31:14,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2025-01-09 04:31:16,233 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:31:16,235 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:31:42,193 INFO L? ?]: Removed 272 outVars from TransFormulas that were not future-live. [2025-01-09 04:31:42,194 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:31:42,344 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:31:42,345 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:31:42,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:31:42 BoogieIcfgContainer [2025-01-09 04:31:42,345 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:31:42,349 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:31:42,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:31:42,353 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:31:42,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:31:08" (1/3) ... [2025-01-09 04:31:42,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3cf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:31:42, skipping insertion in model container [2025-01-09 04:31:42,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:31:10" (2/3) ... [2025-01-09 04:31:42,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3cf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:31:42, skipping insertion in model container [2025-01-09 04:31:42,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:31:42" (3/3) ... [2025-01-09 04:31:42,357 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-2.c [2025-01-09 04:31:42,372 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:31:42,376 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M4-2.c that has 16 procedures, 12012 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 04:31:42,604 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:31:42,613 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;@657df108, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:31:42,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:31:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 12012 states, 7877 states have (on average 1.3195378951377428) internal successors, (10394), 7990 states have internal predecessors, (10394), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2025-01-09 04:31:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2025-01-09 04:31:42,992 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:31:42,995 INFO L218 NwaCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:31:42,995 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:31:43,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:31:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 288755387, now seen corresponding path program 1 times [2025-01-09 04:31:43,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:31:43,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591540016] [2025-01-09 04:31:43,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:31:54,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes. [2025-01-09 04:31:54,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4616 of 4616 statements. [2025-01-09 04:31:54,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:54,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 226464 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 225792 trivial. 0 not checked. [2025-01-09 04:31:57,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:31:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591540016] [2025-01-09 04:31:57,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591540016] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:31:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949308212] [2025-01-09 04:31:57,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:57,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:31:57,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:31:57,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:31:57,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 04:32:09,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes. [2025-01-09 04:32:10,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4616 of 4616 statements. [2025-01-09 04:32:10,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:32:10,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:32:10,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 13978 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 04:32:10,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:32:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 226464 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 225792 trivial. 0 not checked. [2025-01-09 04:32:11,010 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 04:32:11,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949308212] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:32:11,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 04:32:11,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 04:32:11,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101493590] [2025-01-09 04:32:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:32:11,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 04:32:11,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:32:11,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 04:32:11,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 04:32:11,073 INFO L87 Difference]: Start difference. First operand has 12012 states, 7877 states have (on average 1.3195378951377428) internal successors, (10394), 7990 states have internal predecessors, (10394), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) Second operand has 2 states, 2 states have (on average 1468.0) internal successors, (2936), 2 states have internal predecessors, (2936), 2 states have call successors, (337), 2 states have call predecessors, (337), 1 states have return successors, (337), 1 states have call predecessors, (337), 2 states have call successors, (337) [2025-01-09 04:32:11,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:32:11,552 INFO L93 Difference]: Finished difference Result 24019 states and 41356 transitions. [2025-01-09 04:32:11,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 04:32:11,558 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1468.0) internal successors, (2936), 2 states have internal predecessors, (2936), 2 states have call successors, (337), 2 states have call predecessors, (337), 1 states have return successors, (337), 1 states have call predecessors, (337), 2 states have call successors, (337) Word has length 4616 [2025-01-09 04:32:11,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:32:11,647 INFO L225 Difference]: With dead ends: 24019 [2025-01-09 04:32:11,647 INFO L226 Difference]: Without dead ends: 12006 [2025-01-09 04:32:11,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4617 GetRequests, 4617 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 04:32:11,710 INFO L435 NwaCegarLoop]: 18628 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18628 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:32:11,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18628 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:32:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12006 states. [2025-01-09 04:32:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12006 to 12006. [2025-01-09 04:32:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12006 states, 7872 states have (on average 1.3192327235772359) internal successors, (10385), 7984 states have internal predecessors, (10385), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2025-01-09 04:32:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12006 states to 12006 states and 18621 transitions. [2025-01-09 04:32:18,450 INFO L78 Accepts]: Start accepts. Automaton has 12006 states and 18621 transitions. Word has length 4616 [2025-01-09 04:32:18,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:32:18,451 INFO L471 AbstractCegarLoop]: Abstraction has 12006 states and 18621 transitions. [2025-01-09 04:32:18,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1468.0) internal successors, (2936), 2 states have internal predecessors, (2936), 2 states have call successors, (337), 2 states have call predecessors, (337), 1 states have return successors, (337), 1 states have call predecessors, (337), 2 states have call successors, (337) [2025-01-09 04:32:18,453 INFO L276 IsEmpty]: Start isEmpty. Operand 12006 states and 18621 transitions. [2025-01-09 04:32:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2025-01-09 04:32:18,683 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:32:18,685 INFO L218 NwaCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1] [2025-01-09 04:32:18,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 04:32:18,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 04:32:18,886 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:32:18,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:32:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash -199339727, now seen corresponding path program 1 times [2025-01-09 04:32:18,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:32:18,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894679038] [2025-01-09 04:32:18,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:32:18,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:32:28,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes.