./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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.M1-2.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 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 16:22:24,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 16:22:24,344 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 16:22:24,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 16:22:24,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 16:22:24,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 16:22:24,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 16:22:24,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 16:22:24,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 16:22:24,361 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 16:22:24,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 16:22:24,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 16:22:24,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 16:22:24,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 16:22:24,361 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 16:22:24,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 16:22:24,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 16:22:24,361 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 16:22:24,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 16:22:24,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 16:22:24,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 16:22:24,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 16:22:24,362 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 16:22:24,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 16:22:24,362 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 16:22:24,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 16:22:24,362 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 16:22:24,362 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 16:22:24,362 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:22:24,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 16:22:24,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 16:22:24,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 16:22:24,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 16:22:24,364 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 -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2025-02-05 16:22:24,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 16:22:24,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 16:22:24,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 16:22:24,600 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 16:22:24,601 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 16:22:24,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2025-02-05 16:22:25,919 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/602f73b2c/2bbe6f1975374b09a68b464e5cc1fabf/FLAG168c9bd67 [2025-02-05 16:22:26,292 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 16:22:26,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2025-02-05 16:22:26,315 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/602f73b2c/2bbe6f1975374b09a68b464e5cc1fabf/FLAG168c9bd67 [2025-02-05 16:22:26,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/602f73b2c/2bbe6f1975374b09a68b464e5cc1fabf [2025-02-05 16:22:26,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 16:22:26,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 16:22:26,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 16:22:26,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 16:22:26,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 16:22:26,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:22:26" (1/1) ... [2025-02-05 16:22:26,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d30aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:26, skipping insertion in model container [2025-02-05 16:22:26,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:22:26" (1/1) ... [2025-02-05 16:22:26,529 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 16:22:26,654 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.M1-2.c[1673,1686] [2025-02-05 16:22:26,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:22:26,898 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 16:22:26,905 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2025-02-05 16:22:26,909 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.M1-2.c[1673,1686] [2025-02-05 16:22:27,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:22:27,051 INFO L204 MainTranslator]: Completed translation [2025-02-05 16:22:27,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27 WrapperNode [2025-02-05 16:22:27,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 16:22:27,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 16:22:27,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 16:22:27,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 16:22:27,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,238 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3990 [2025-02-05 16:22:27,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 16:22:27,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 16:22:27,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 16:22:27,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 16:22:27,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,353 INFO L175 MemorySlicer]: Split 1382 memory accesses to 17 slices as follows [2, 264, 8, 305, 2, 156, 113, 79, 57, 83, 105, 82, 105, 8, 7, 4, 2]. 22 percent of accesses are in the largest equivalence class. The 166 initializations are split as follows [2, 24, 0, 24, 0, 2, 2, 1, 1, 27, 27, 27, 27, 0, 2, 0, 0]. The 175 writes are split as follows [0, 24, 4, 24, 1, 2, 2, 1, 1, 28, 26, 28, 26, 4, 3, 0, 1]. [2025-02-05 16:22:27,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,430 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 16:22:27,500 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 16:22:27,501 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 16:22:27,501 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 16:22:27,502 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (1/1) ... [2025-02-05 16:22:27,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:22:27,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:22:27,533 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) [2025-02-05 16:22:27,543 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 [2025-02-05 16:22:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 16:22:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2025-02-05 16:22:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2025-02-05 16:22:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2025-02-05 16:22:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2025-02-05 16:22:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 16:22:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2025-02-05 16:22:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2025-02-05 16:22:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2025-02-05 16:22:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2025-02-05 16:22:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2025-02-05 16:22:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-02-05 16:22:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-02-05 16:22:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-02-05 16:22:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-02-05 16:22:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-02-05 16:22:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-02-05 16:22:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2025-02-05 16:22:27,561 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2025-02-05 16:22:27,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-02-05 16:22:27,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-02-05 16:22:27,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2025-02-05 16:22:27,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-02-05 16:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-02-05 16:22:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-02-05 16:22:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-02-05 16:22:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-02-05 16:22:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-02-05 16:22:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-02-05 16:22:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-02-05 16:22:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-02-05 16:22:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-02-05 16:22:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2025-02-05 16:22:27,655 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 16:22:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 16:22:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2025-02-05 16:22:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2025-02-05 16:22:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2025-02-05 16:22:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2025-02-05 16:22:27,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2025-02-05 16:22:27,961 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 16:22:27,964 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 16:22:28,267 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L209: call ULTIMATE.dealloc(OSEK_Task_ts1_~#pwm_l~0#1.base, OSEK_Task_ts1_~#pwm_l~0#1.offset);havoc OSEK_Task_ts1_~#pwm_l~0#1.base, OSEK_Task_ts1_~#pwm_l~0#1.offset;call ULTIMATE.dealloc(OSEK_Task_ts1_~#pwm_r~0#1.base, OSEK_Task_ts1_~#pwm_r~0#1.offset);havoc OSEK_Task_ts1_~#pwm_r~0#1.base, OSEK_Task_ts1_~#pwm_r~0#1.offset; [2025-02-05 16:22:28,268 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L82: call ULTIMATE.dealloc(balance_control_~#tmp~0#1.base, balance_control_~#tmp~0#1.offset);havoc balance_control_~#tmp~0#1.base, balance_control_~#tmp~0#1.offset;call ULTIMATE.dealloc(balance_control_~#tmp_theta_0~0#1.base, balance_control_~#tmp_theta_0~0#1.offset);havoc balance_control_~#tmp_theta_0~0#1.base, balance_control_~#tmp_theta_0~0#1.offset; [2025-02-05 16:22:31,327 INFO L? ?]: Removed 191 outVars from TransFormulas that were not future-live. [2025-02-05 16:22:31,327 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 16:22:31,358 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 16:22:31,358 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 16:22:31,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:22:31 BoogieIcfgContainer [2025-02-05 16:22:31,363 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 16:22:31,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 16:22:31,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 16:22:31,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 16:22:31,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 04:22:26" (1/3) ... [2025-02-05 16:22:31,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377fb85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:22:31, skipping insertion in model container [2025-02-05 16:22:31,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:27" (2/3) ... [2025-02-05 16:22:31,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377fb85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:22:31, skipping insertion in model container [2025-02-05 16:22:31,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:22:31" (3/3) ... [2025-02-05 16:22:31,370 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2025-02-05 16:22:31,381 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 16:22:31,384 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M1-2.c that has 16 procedures, 1137 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 16:22:31,459 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 16:22:31,468 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;@130963f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 16:22:31,469 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 16:22:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 1137 states, 728 states have (on average 1.2884615384615385) internal successors, (938), 760 states have internal predecessors, (938), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2025-02-05 16:22:31,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-02-05 16:22:31,562 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:22:31,563 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:22:31,564 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:22:31,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:22:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash -554561153, now seen corresponding path program 1 times [2025-02-05 16:22:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:22:31,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189577280] [2025-02-05 16:22:31,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:22:31,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:22:31,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-02-05 16:22:31,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-02-05 16:22:31,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:22:31,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:22:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2025-02-05 16:22:32,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:22:32,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189577280] [2025-02-05 16:22:32,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189577280] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:22:32,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596662938] [2025-02-05 16:22:32,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:22:32,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:22:32,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:22:32,419 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) [2025-02-05 16:22:32,420 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 [2025-02-05 16:22:32,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-02-05 16:22:33,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-02-05 16:22:33,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:22:33,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:22:33,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 16:22:33,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:22:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2025-02-05 16:22:33,291 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:22:33,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596662938] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:22:33,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:22:33,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 16:22:33,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138074650] [2025-02-05 16:22:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:22:33,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 16:22:33,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:22:33,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 16:22:33,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 16:22:33,319 INFO L87 Difference]: Start difference. First operand has 1137 states, 728 states have (on average 1.2884615384615385) internal successors, (938), 760 states have internal predecessors, (938), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) Second operand has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2025-02-05 16:22:33,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:22:33,407 INFO L93 Difference]: Finished difference Result 2269 states and 3814 transitions. [2025-02-05 16:22:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 16:22:33,408 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) Word has length 722 [2025-02-05 16:22:33,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:22:33,422 INFO L225 Difference]: With dead ends: 2269 [2025-02-05 16:22:33,425 INFO L226 Difference]: Without dead ends: 1131 [2025-02-05 16:22:33,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 16:22:33,444 INFO L435 NwaCegarLoop]: 1720 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, 1720 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 [2025-02-05 16:22:33,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:22:33,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2025-02-05 16:22:33,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1131. [2025-02-05 16:22:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 723 states have (on average 1.2849239280774551) internal successors, (929), 754 states have internal predecessors, (929), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2025-02-05 16:22:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1713 transitions. [2025-02-05 16:22:33,610 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1713 transitions. Word has length 722 [2025-02-05 16:22:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:22:33,611 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 1713 transitions. [2025-02-05 16:22:33,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2025-02-05 16:22:33,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1713 transitions. [2025-02-05 16:22:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-02-05 16:22:33,634 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:22:33,634 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:22:33,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 16:22:33,835 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 [2025-02-05 16:22:33,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:22:33,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:22:33,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1049830414, now seen corresponding path program 1 times [2025-02-05 16:22:33,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:22:33,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525256402] [2025-02-05 16:22:33,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:22:33,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:22:34,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-02-05 16:22:39,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-02-05 16:22:39,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:22:39,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:22:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 225 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2025-02-05 16:22:42,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:22:42,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525256402] [2025-02-05 16:22:42,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525256402] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:22:42,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653625301] [2025-02-05 16:22:42,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:22:42,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:22:42,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:22:42,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:22:42,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 16:22:42,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-02-05 16:22:43,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-02-05 16:22:43,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:22:43,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:22:43,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 16:22:43,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:22:44,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 15 [2025-02-05 16:22:46,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2025-02-05 16:22:46,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-05 16:22:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7782 proven. 69 refuted. 0 times theorem prover too weak. 6429 trivial. 0 not checked. [2025-02-05 16:22:46,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:22:47,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-02-05 16:22:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 225 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2025-02-05 16:22:48,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653625301] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:22:48,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:22:48,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 20 [2025-02-05 16:22:48,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523907695] [2025-02-05 16:22:48,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:22:48,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-05 16:22:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:22:48,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-05 16:22:48,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2025-02-05 16:22:48,106 INFO L87 Difference]: Start difference. First operand 1131 states and 1713 transitions. Second operand has 20 states, 17 states have (on average 42.588235294117645) internal successors, (724), 20 states have internal predecessors, (724), 11 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 8 states have call predecessors, (203), 11 states have call successors, (203) [2025-02-05 16:22:53,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-05 16:22:55,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-05 16:23:02,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:23:02,327 INFO L93 Difference]: Finished difference Result 1483 states and 2224 transitions. [2025-02-05 16:23:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-05 16:23:02,328 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 42.588235294117645) internal successors, (724), 20 states have internal predecessors, (724), 11 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 8 states have call predecessors, (203), 11 states have call successors, (203) Word has length 722 [2025-02-05 16:23:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:23:02,344 INFO L225 Difference]: With dead ends: 1483 [2025-02-05 16:23:02,344 INFO L226 Difference]: Without dead ends: 1368 [2025-02-05 16:23:02,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1462 GetRequests, 1434 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2025-02-05 16:23:02,346 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 5583 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 8225 mSolverCounterSat, 4663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5885 SdHoareTripleChecker+Valid, 3827 SdHoareTripleChecker+Invalid, 12888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4663 IncrementalHoareTripleChecker+Valid, 8225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2025-02-05 16:23:02,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5885 Valid, 3827 Invalid, 12888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4663 Valid, 8225 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2025-02-05 16:23:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2025-02-05 16:23:02,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1337. [2025-02-05 16:23:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 855 states have (on average 1.2713450292397661) internal successors, (1087), 889 states have internal predecessors, (1087), 449 states have call successors, (449), 29 states have call predecessors, (449), 32 states have return successors, (491), 448 states have call predecessors, (491), 449 states have call successors, (491) [2025-02-05 16:23:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2027 transitions. [2025-02-05 16:23:02,544 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2027 transitions. Word has length 722 [2025-02-05 16:23:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:23:02,547 INFO L471 AbstractCegarLoop]: Abstraction has 1337 states and 2027 transitions. [2025-02-05 16:23:02,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 42.588235294117645) internal successors, (724), 20 states have internal predecessors, (724), 11 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 8 states have call predecessors, (203), 11 states have call successors, (203) [2025-02-05 16:23:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2027 transitions. [2025-02-05 16:23:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2025-02-05 16:23:02,598 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:23:02,598 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:23:02,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 16:23:02,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:23:02,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:23:02,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:23:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash -448928797, now seen corresponding path program 1 times [2025-02-05 16:23:02,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:23:02,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52102001] [2025-02-05 16:23:02,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:23:02,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:23:02,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 752 statements into 1 equivalence classes. [2025-02-05 16:23:03,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 752 of 752 statements. [2025-02-05 16:23:03,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:23:03,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:23:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2025-02-05 16:23:03,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:23:03,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52102001] [2025-02-05 16:23:03,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52102001] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:23:03,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:23:03,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 16:23:03,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158968880] [2025-02-05 16:23:03,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:23:03,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:23:03,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:23:03,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:23:03,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 16:23:03,296 INFO L87 Difference]: Start difference. First operand 1337 states and 2027 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 2 states have call successors, (89), 1 states have call predecessors, (89), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2025-02-05 16:23:03,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:23:03,419 INFO L93 Difference]: Finished difference Result 1854 states and 2843 transitions. [2025-02-05 16:23:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:23:03,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 2 states have call successors, (89), 1 states have call predecessors, (89), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 752 [2025-02-05 16:23:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:23:03,433 INFO L225 Difference]: With dead ends: 1854 [2025-02-05 16:23:03,433 INFO L226 Difference]: Without dead ends: 1337 [2025-02-05 16:23:03,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 16:23:03,438 INFO L435 NwaCegarLoop]: 1710 mSDtfsCounter, 0 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:23:03,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3410 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:23:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2025-02-05 16:23:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2025-02-05 16:23:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 855 states have (on average 1.2690058479532165) internal successors, (1085), 889 states have internal predecessors, (1085), 449 states have call successors, (449), 29 states have call predecessors, (449), 32 states have return successors, (491), 448 states have call predecessors, (491), 449 states have call successors, (491) [2025-02-05 16:23:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2025 transitions. [2025-02-05 16:23:03,560 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2025 transitions. Word has length 752 [2025-02-05 16:23:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:23:03,560 INFO L471 AbstractCegarLoop]: Abstraction has 1337 states and 2025 transitions. [2025-02-05 16:23:03,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 2 states have call successors, (89), 1 states have call predecessors, (89), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2025-02-05 16:23:03,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2025 transitions. [2025-02-05 16:23:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2025-02-05 16:23:03,570 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:23:03,571 INFO L218 NwaCegarLoop]: trace histogram [88, 88, 88, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:23:03,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 16:23:03,571 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:23:03,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:23:03,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1784633784, now seen corresponding path program 1 times [2025-02-05 16:23:03,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:23:03,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609713953] [2025-02-05 16:23:03,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:23:03,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:23:03,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 773 statements into 1 equivalence classes. [2025-02-05 16:23:04,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 773 of 773 statements. [2025-02-05 16:23:04,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:23:04,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:23:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 15315 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15315 trivial. 0 not checked. [2025-02-05 16:23:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:23:04,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609713953] [2025-02-05 16:23:04,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609713953] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:23:04,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:23:04,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:23:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418111841] [2025-02-05 16:23:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:23:04,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:23:04,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:23:04,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:23:04,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:23:04,746 INFO L87 Difference]: Start difference. First operand 1337 states and 2025 transitions. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 4 states have call successors, (93), 1 states have call predecessors, (93), 2 states have return successors, (93), 3 states have call predecessors, (93), 4 states have call successors, (93) [2025-02-05 16:23:06,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:23:06,023 INFO L93 Difference]: Finished difference Result 1860 states and 2833 transitions. [2025-02-05 16:23:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:23:06,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 4 states have call successors, (93), 1 states have call predecessors, (93), 2 states have return successors, (93), 3 states have call predecessors, (93), 4 states have call successors, (93) Word has length 773 [2025-02-05 16:23:06,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:23:06,032 INFO L225 Difference]: With dead ends: 1860 [2025-02-05 16:23:06,032 INFO L226 Difference]: Without dead ends: 1343 [2025-02-05 16:23:06,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:23:06,036 INFO L435 NwaCegarLoop]: 1752 mSDtfsCounter, 1711 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:23:06,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 2952 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 16:23:06,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2025-02-05 16:23:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1343. [2025-02-05 16:23:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 864 states have (on average 1.2662037037037037) internal successors, (1094), 895 states have internal predecessors, (1094), 440 states have call successors, (440), 32 states have call predecessors, (440), 38 states have return successors, (481), 445 states have call predecessors, (481), 440 states have call successors, (481) [2025-02-05 16:23:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 2015 transitions. [2025-02-05 16:23:06,136 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 2015 transitions. Word has length 773 [2025-02-05 16:23:06,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:23:06,137 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 2015 transitions. [2025-02-05 16:23:06,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 4 states have call successors, (93), 1 states have call predecessors, (93), 2 states have return successors, (93), 3 states have call predecessors, (93), 4 states have call successors, (93) [2025-02-05 16:23:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 2015 transitions. [2025-02-05 16:23:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2025-02-05 16:23:06,146 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:23:06,146 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:23:06,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 16:23:06,146 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:23:06,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:23:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1786995058, now seen corresponding path program 1 times [2025-02-05 16:23:06,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:23:06,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145082908] [2025-02-05 16:23:06,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:23:06,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:23:06,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 755 statements into 1 equivalence classes. [2025-02-05 16:23:06,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 755 of 755 statements. [2025-02-05 16:23:06,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:23:06,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:23:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14623 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14623 trivial. 0 not checked. [2025-02-05 16:23:07,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:23:07,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145082908] [2025-02-05 16:23:07,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145082908] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:23:07,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:23:07,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:23:07,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034566108] [2025-02-05 16:23:07,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:23:07,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:23:07,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:23:07,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:23:07,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:23:07,626 INFO L87 Difference]: Start difference. First operand 1343 states and 2015 transitions. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 4 states have call successors, (90), 1 states have call predecessors, (90), 2 states have return successors, (90), 3 states have call predecessors, (90), 4 states have call successors, (90) [2025-02-05 16:23:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:23:09,003 INFO L93 Difference]: Finished difference Result 1795 states and 2729 transitions. [2025-02-05 16:23:09,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:23:09,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 4 states have call successors, (90), 1 states have call predecessors, (90), 2 states have return successors, (90), 3 states have call predecessors, (90), 4 states have call successors, (90) Word has length 755 [2025-02-05 16:23:09,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:23:09,013 INFO L225 Difference]: With dead ends: 1795 [2025-02-05 16:23:09,013 INFO L226 Difference]: Without dead ends: 1343 [2025-02-05 16:23:09,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:23:09,017 INFO L435 NwaCegarLoop]: 1750 mSDtfsCounter, 1712 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:23:09,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 2948 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 16:23:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2025-02-05 16:23:09,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1343. [2025-02-05 16:23:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 864 states have (on average 1.2650462962962963) internal successors, (1093), 895 states have internal predecessors, (1093), 440 states have call successors, (440), 32 states have call predecessors, (440), 38 states have return successors, (481), 445 states have call predecessors, (481), 440 states have call successors, (481) [2025-02-05 16:23:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 2014 transitions. [2025-02-05 16:23:09,110 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 2014 transitions. Word has length 755 [2025-02-05 16:23:09,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:23:09,110 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 2014 transitions. [2025-02-05 16:23:09,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 4 states have call successors, (90), 1 states have call predecessors, (90), 2 states have return successors, (90), 3 states have call predecessors, (90), 4 states have call successors, (90) [2025-02-05 16:23:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 2014 transitions. [2025-02-05 16:23:09,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2025-02-05 16:23:09,118 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:23:09,118 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:23:09,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 16:23:09,119 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:23:09,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:23:09,119 INFO L85 PathProgramCache]: Analyzing trace with hash -849591848, now seen corresponding path program 1 times [2025-02-05 16:23:09,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:23:09,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543523858] [2025-02-05 16:23:09,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:23:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:23:09,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 760 statements into 1 equivalence classes. [2025-02-05 16:23:16,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 760 of 760 statements. [2025-02-05 16:23:16,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:23:16,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:23:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14623 backedges. 27 proven. 477 refuted. 0 times theorem prover too weak. 14119 trivial. 0 not checked. [2025-02-05 16:23:20,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:23:20,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543523858] [2025-02-05 16:23:20,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543523858] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:23:20,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426303237] [2025-02-05 16:23:20,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:23:20,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:23:20,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:23:20,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:23:20,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 16:23:20,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 760 statements into 1 equivalence classes. [2025-02-05 16:23:21,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 760 of 760 statements. [2025-02-05 16:23:21,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:23:21,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:23:21,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-05 16:23:21,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:23:22,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 16:23:22,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-02-05 16:23:22,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-05 16:23:23,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-05 16:23:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14623 backedges. 7182 proven. 180 refuted. 0 times theorem prover too weak. 7261 trivial. 0 not checked. [2025-02-05 16:23:23,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:23:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14623 backedges. 9 proven. 498 refuted. 0 times theorem prover too weak. 14116 trivial. 0 not checked. [2025-02-05 16:23:25,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426303237] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:23:25,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:23:25,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 12] total 36 [2025-02-05 16:23:25,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253193354] [2025-02-05 16:23:25,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:23:25,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-05 16:23:25,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:23:25,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-05 16:23:25,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2025-02-05 16:23:25,051 INFO L87 Difference]: Start difference. First operand 1343 states and 2014 transitions. Second operand has 36 states, 28 states have (on average 27.964285714285715) internal successors, (783), 34 states have internal predecessors, (783), 17 states have call successors, (215), 4 states have call predecessors, (215), 8 states have return successors, (215), 12 states have call predecessors, (215), 17 states have call successors, (215) [2025-02-05 16:23:35,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-05 16:23:39,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-05 16:23:41,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-05 16:23:43,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []