./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 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.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-?-551b009-m [2025-01-09 04:30:55,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:30:55,464 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:30:55,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:30:55,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:30:55,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:30:55,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:30:55,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:30:55,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:30:55,486 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:30:55,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:30:55,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:30:55,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:30:55,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:30:55,487 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:30:55,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:30:55,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:30:55,487 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:30:55,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:30:55,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:30:55,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:30:55,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:30:55,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:30:55,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:30:55,488 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:30:55,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:30:55,488 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:30:55,488 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:30:55,488 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:30:55,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:30:55,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:30:55,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:30:55,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:30:55,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:30:55,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:30:55,489 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:30:55,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:30:55,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:30:55,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:30:55,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:30:55,489 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:30:55,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:30:55,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:30:55,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:30:55,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:30:55,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:30:55,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:30:55,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:30:55,490 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 [2025-01-09 04:30:55,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:30:55,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:30:55,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:30:55,736 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:30:55,736 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:30:55,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2025-01-09 04:30:57,070 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb95aa73f/f0c7011bdc9040958958a8bafd87d38a/FLAG79b9519fa [2025-01-09 04:30:57,450 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:30:57,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2025-01-09 04:30:57,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb95aa73f/f0c7011bdc9040958958a8bafd87d38a/FLAG79b9519fa [2025-01-09 04:30:57,484 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb95aa73f/f0c7011bdc9040958958a8bafd87d38a [2025-01-09 04:30:57,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:30:57,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:30:57,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:30:57,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:30:57,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:30:57,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:30:57" (1/1) ... [2025-01-09 04:30:57,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e40b9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:57, skipping insertion in model container [2025-01-09 04:30:57,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:30:57" (1/1) ... [2025-01-09 04:30:57,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:30:57,679 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] [2025-01-09 04:30:57,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:30:57,915 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:30:57,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2025-01-09 04:30:57,929 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] [2025-01-09 04:30:58,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:30:58,107 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:30:58,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58 WrapperNode [2025-01-09 04:30:58,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:30:58,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:30:58,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:30:58,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:30:58,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,292 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3990 [2025-01-09 04:30:58,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:30:58,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:30:58,293 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:30:58,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:30:58,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,387 INFO L175 MemorySlicer]: Split 1382 memory accesses to 17 slices as follows [2, 2, 264, 4, 305, 156, 113, 79, 57, 83, 105, 82, 105, 2, 8, 8, 7]. 22 percent of accesses are in the largest equivalence class. The 166 initializations are split as follows [2, 0, 24, 0, 24, 2, 2, 1, 1, 27, 27, 27, 27, 0, 0, 0, 2]. The 175 writes are split as follows [0, 1, 24, 0, 24, 2, 2, 1, 1, 28, 26, 28, 26, 1, 4, 4, 3]. [2025-01-09 04:30:58,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,457 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:30:58,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:30:58,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:30:58,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:30:58,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (1/1) ... [2025-01-09 04:30:58,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:30:58,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:30:58,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 04:30:58,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 04:30:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:30:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2025-01-09 04:30:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2025-01-09 04:30:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2025-01-09 04:30:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2025-01-09 04:30:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 04:30:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2025-01-09 04:30:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2025-01-09 04:30:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2025-01-09 04:30:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2025-01-09 04:30:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2025-01-09 04:30:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2025-01-09 04:30:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2025-01-09 04:30:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2025-01-09 04:30:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2025-01-09 04:30:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-01-09 04:30:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-01-09 04:30:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2025-01-09 04:30:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-01-09 04:30:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2025-01-09 04:30:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 04:30:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-01-09 04:30:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:30:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:30:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2025-01-09 04:30:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2025-01-09 04:30:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2025-01-09 04:30:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2025-01-09 04:30:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2025-01-09 04:30:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2025-01-09 04:30:58,975 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:30:58,978 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:31:04,649 INFO L? ?]: Removed 191 outVars from TransFormulas that were not future-live. [2025-01-09 04:31:04,649 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:31:04,687 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:31:04,687 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:31:04,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:31:04 BoogieIcfgContainer [2025-01-09 04:31:04,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:31:04,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:31:04,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:31:04,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:31:04,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:30:57" (1/3) ... [2025-01-09 04:31:04,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc12288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:31:04, skipping insertion in model container [2025-01-09 04:31:04,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:30:58" (2/3) ... [2025-01-09 04:31:04,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc12288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:31:04, skipping insertion in model container [2025-01-09 04:31:04,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:31:04" (3/3) ... [2025-01-09 04:31:04,696 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2025-01-09 04:31:04,707 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:31:04,710 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. [2025-01-09 04:31:04,766 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:31:04,773 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;@9c8b28b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:31:04,773 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:31:04,778 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) [2025-01-09 04:31:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-01-09 04:31:04,825 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:31:04,826 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] [2025-01-09 04:31:04,826 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:31:04,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:31:04,830 INFO L85 PathProgramCache]: Analyzing trace with hash 41303101, now seen corresponding path program 1 times [2025-01-09 04:31:04,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:31:04,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942891652] [2025-01-09 04:31:04,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:04,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:31:05,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-01-09 04:31:12,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-01-09 04:31:12,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:12,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 471 refuted. 0 times theorem prover too weak. 13782 trivial. 0 not checked. [2025-01-09 04:31:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:31:17,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942891652] [2025-01-09 04:31:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942891652] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:31:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625012185] [2025-01-09 04:31:17,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:17,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:31:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:31:17,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:31:17,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 04:31:18,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-01-09 04:31:20,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-01-09 04:31:20,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:20,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:20,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 04:31:20,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:31:20,539 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 [2025-01-09 04:31:20,873 INFO L224 Elim1Store]: Index analysis took 316 ms [2025-01-09 04:31:20,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 276 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 31 [2025-01-09 04:31:20,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 04:31:20,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 31 [2025-01-09 04:31:22,873 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 [2025-01-09 04:31:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7679 proven. 165 refuted. 0 times theorem prover too weak. 6436 trivial. 0 not checked. [2025-01-09 04:31:22,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:31:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 225 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2025-01-09 04:31:24,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625012185] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:31:24,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:31:24,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2025-01-09 04:31:24,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557337827] [2025-01-09 04:31:24,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:31:24,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 04:31:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:31:24,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 04:31:24,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:31:24,382 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 22 states, 18 states have (on average 43.833333333333336) internal successors, (789), 22 states have internal predecessors, (789), 13 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 9 states have call predecessors, (203), 13 states have call successors, (203) [2025-01-09 04:31:31,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:31:34,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:31:37,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:31:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:31:44,644 INFO L93 Difference]: Finished difference Result 2514 states and 4214 transitions. [2025-01-09 04:31:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 04:31:44,647 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 43.833333333333336) internal successors, (789), 22 states have internal predecessors, (789), 13 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 9 states have call predecessors, (203), 13 states have call successors, (203) Word has length 722 [2025-01-09 04:31:44,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:31:44,663 INFO L225 Difference]: With dead ends: 2514 [2025-01-09 04:31:44,663 INFO L226 Difference]: Without dead ends: 1376 [2025-01-09 04:31:44,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1481 GetRequests, 1438 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=372, Invalid=1350, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 04:31:44,674 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 7530 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 8607 mSolverCounterSat, 7416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7532 SdHoareTripleChecker+Valid, 3864 SdHoareTripleChecker+Invalid, 16023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7416 IncrementalHoareTripleChecker+Valid, 8607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2025-01-09 04:31:44,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7532 Valid, 3864 Invalid, 16023 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7416 Valid, 8607 Invalid, 0 Unknown, 0 Unchecked, 19.2s Time] [2025-01-09 04:31:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2025-01-09 04:31:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1345. [2025-01-09 04:31:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 861 states have (on average 1.2682926829268293) internal successors, (1092), 894 states have internal predecessors, (1092), 449 states have call successors, (449), 31 states have call predecessors, (449), 34 states have return successors, (491), 448 states have call predecessors, (491), 449 states have call successors, (491) [2025-01-09 04:31:45,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2032 transitions. [2025-01-09 04:31:45,128 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2032 transitions. Word has length 722 [2025-01-09 04:31:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:31:45,132 INFO L471 AbstractCegarLoop]: Abstraction has 1345 states and 2032 transitions. [2025-01-09 04:31:45,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 43.833333333333336) internal successors, (789), 22 states have internal predecessors, (789), 13 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 9 states have call predecessors, (203), 13 states have call successors, (203) [2025-01-09 04:31:45,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2032 transitions. [2025-01-09 04:31:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2025-01-09 04:31:45,185 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:31:45,186 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:31:45,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 04:31:45,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 04:31:45,387 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:31:45,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:31:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1651928022, now seen corresponding path program 1 times [2025-01-09 04:31:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:31:45,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090608732] [2025-01-09 04:31:45,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:45,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:31:45,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 786 statements into 1 equivalence classes. [2025-01-09 04:31:45,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 786 of 786 statements. [2025-01-09 04:31:45,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:45,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 14976 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 14970 trivial. 0 not checked. [2025-01-09 04:31:46,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:31:46,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090608732] [2025-01-09 04:31:46,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090608732] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:31:46,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235503808] [2025-01-09 04:31:46,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:46,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:31:46,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:31:46,623 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) [2025-01-09 04:31:46,626 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 [2025-01-09 04:31:47,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 786 statements into 1 equivalence classes. [2025-01-09 04:31:47,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 786 of 786 statements. [2025-01-09 04:31:47,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:47,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:47,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 2819 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 04:31:47,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:31:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14976 backedges. 7208 proven. 0 refuted. 0 times theorem prover too weak. 7768 trivial. 0 not checked. [2025-01-09 04:31:47,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 04:31:47,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235503808] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:31:47,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 04:31:47,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-01-09 04:31:47,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614767381] [2025-01-09 04:31:47,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:31:47,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 04:31:47,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:31:47,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 04:31:47,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 04:31:47,411 INFO L87 Difference]: Start difference. First operand 1345 states and 2032 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 2 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) [2025-01-09 04:31:47,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:31:47,529 INFO L93 Difference]: Finished difference Result 1862 states and 2848 transitions. [2025-01-09 04:31:47,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 04:31:47,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 2 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) Word has length 786 [2025-01-09 04:31:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:31:47,541 INFO L225 Difference]: With dead ends: 1862 [2025-01-09 04:31:47,542 INFO L226 Difference]: Without dead ends: 1345 [2025-01-09 04:31:47,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 786 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 04:31:47,547 INFO L435 NwaCegarLoop]: 1709 mSDtfsCounter, 0 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3408 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 [2025-01-09 04:31:47,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3408 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:31:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2025-01-09 04:31:47,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1345. [2025-01-09 04:31:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 861 states have (on average 1.2659698025551684) internal successors, (1090), 894 states have internal predecessors, (1090), 449 states have call successors, (449), 31 states have call predecessors, (449), 34 states have return successors, (491), 448 states have call predecessors, (491), 449 states have call successors, (491) [2025-01-09 04:31:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2030 transitions. [2025-01-09 04:31:47,983 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2030 transitions. Word has length 786 [2025-01-09 04:31:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:31:47,984 INFO L471 AbstractCegarLoop]: Abstraction has 1345 states and 2030 transitions. [2025-01-09 04:31:47,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 2 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) [2025-01-09 04:31:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2030 transitions. [2025-01-09 04:31:48,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2025-01-09 04:31:48,003 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:31:48,004 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:31:48,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 04:31:48,204 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 [2025-01-09 04:31:48,205 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:31:48,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:31:48,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1469355290, now seen corresponding path program 1 times [2025-01-09 04:31:48,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:31:48,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100563955] [2025-01-09 04:31:48,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:48,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:31:48,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 807 statements into 1 equivalence classes. [2025-01-09 04:31:48,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 807 of 807 statements. [2025-01-09 04:31:48,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:48,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15679 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15673 trivial. 0 not checked. [2025-01-09 04:31:49,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:31:49,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100563955] [2025-01-09 04:31:49,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100563955] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:31:49,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376177894] [2025-01-09 04:31:49,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:49,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:31:49,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:31:49,454 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) [2025-01-09 04:31:49,461 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 [2025-01-09 04:31:49,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 807 statements into 1 equivalence classes. [2025-01-09 04:31:50,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 807 of 807 statements. [2025-01-09 04:31:50,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:50,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:50,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 04:31:50,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:31:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15679 backedges. 7394 proven. 0 refuted. 0 times theorem prover too weak. 8285 trivial. 0 not checked. [2025-01-09 04:31:50,311 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 04:31:50,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376177894] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:31:50,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 04:31:50,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2025-01-09 04:31:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584549526] [2025-01-09 04:31:50,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:31:50,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:31:50,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:31:50,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:31:50,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-09 04:31:50,314 INFO L87 Difference]: Start difference. First operand 1345 states and 2030 transitions. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 3 states have call successors, (97), 3 states have call predecessors, (97), 3 states have return successors, (97), 3 states have call predecessors, (97), 3 states have call successors, (97) [2025-01-09 04:31:51,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:31:51,176 INFO L93 Difference]: Finished difference Result 1982 states and 3024 transitions. [2025-01-09 04:31:51,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:31:51,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 3 states have call successors, (97), 3 states have call predecessors, (97), 3 states have return successors, (97), 3 states have call predecessors, (97), 3 states have call successors, (97) Word has length 807 [2025-01-09 04:31:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:31:51,187 INFO L225 Difference]: With dead ends: 1982 [2025-01-09 04:31:51,187 INFO L226 Difference]: Without dead ends: 1397 [2025-01-09 04:31:51,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 04:31:51,194 INFO L435 NwaCegarLoop]: 1748 mSDtfsCounter, 561 mSDsluCounter, 4099 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 5847 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 04:31:51,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 5847 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 04:31:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2025-01-09 04:31:51,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1397. [2025-01-09 04:31:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 899 states have (on average 1.2647385984427142) internal successors, (1137), 933 states have internal predecessors, (1137), 454 states have call successors, (454), 37 states have call predecessors, (454), 43 states have return successors, (496), 455 states have call predecessors, (496), 454 states have call successors, (496) [2025-01-09 04:31:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2087 transitions. [2025-01-09 04:31:51,619 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2087 transitions. Word has length 807 [2025-01-09 04:31:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:31:51,620 INFO L471 AbstractCegarLoop]: Abstraction has 1397 states and 2087 transitions. [2025-01-09 04:31:51,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 3 states have call successors, (97), 3 states have call predecessors, (97), 3 states have return successors, (97), 3 states have call predecessors, (97), 3 states have call successors, (97) [2025-01-09 04:31:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2087 transitions. [2025-01-09 04:31:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2025-01-09 04:31:51,635 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:31:51,636 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:31:51,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 04:31:51,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:31:51,837 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:31:51,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:31:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1389309938, now seen corresponding path program 1 times [2025-01-09 04:31:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:31:51,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679579406] [2025-01-09 04:31:51,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:51,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:31:52,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 803 statements into 1 equivalence classes. [2025-01-09 04:31:52,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 803 of 803 statements. [2025-01-09 04:31:52,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:52,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 15673 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15673 trivial. 0 not checked. [2025-01-09 04:31:53,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:31:53,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679579406] [2025-01-09 04:31:53,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679579406] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:31:53,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:31:53,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:31:53,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164656779] [2025-01-09 04:31:53,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:31:53,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:31:53,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:31:53,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:31:53,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:31:53,149 INFO L87 Difference]: Start difference. First operand 1397 states and 2087 transitions. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 4 states have call successors, (97), 1 states have call predecessors, (97), 2 states have return successors, (97), 3 states have call predecessors, (97), 4 states have call successors, (97) [2025-01-09 04:31:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:31:54,311 INFO L93 Difference]: Finished difference Result 2013 states and 2988 transitions. [2025-01-09 04:31:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:31:54,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 4 states have call successors, (97), 1 states have call predecessors, (97), 2 states have return successors, (97), 3 states have call predecessors, (97), 4 states have call successors, (97) Word has length 803 [2025-01-09 04:31:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:31:54,320 INFO L225 Difference]: With dead ends: 2013 [2025-01-09 04:31:54,321 INFO L226 Difference]: Without dead ends: 1436 [2025-01-09 04:31:54,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 04:31:54,325 INFO L435 NwaCegarLoop]: 1719 mSDtfsCounter, 1727 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:31:54,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 2686 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-09 04:31:54,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2025-01-09 04:31:54,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2025-01-09 04:31:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 928 states have (on average 1.261853448275862) internal successors, (1171), 962 states have internal predecessors, (1171), 456 states have call successors, (456), 44 states have call predecessors, (456), 51 states have return successors, (499), 458 states have call predecessors, (499), 456 states have call successors, (499) [2025-01-09 04:31:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2126 transitions. [2025-01-09 04:31:54,690 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2126 transitions. Word has length 803 [2025-01-09 04:31:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:31:54,691 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 2126 transitions. [2025-01-09 04:31:54,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 4 states have call successors, (97), 1 states have call predecessors, (97), 2 states have return successors, (97), 3 states have call predecessors, (97), 4 states have call successors, (97) [2025-01-09 04:31:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2126 transitions. [2025-01-09 04:31:54,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2025-01-09 04:31:54,707 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:31:54,707 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:31:54,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 04:31:54,708 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:31:54,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:31:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash 233967582, now seen corresponding path program 1 times [2025-01-09 04:31:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:31:54,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872308014] [2025-01-09 04:31:54,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:31:54,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 790 statements into 1 equivalence classes. [2025-01-09 04:31:54,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 790 of 790 statements. [2025-01-09 04:31:54,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:54,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14974 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14969 trivial. 0 not checked. [2025-01-09 04:31:55,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:31:55,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872308014] [2025-01-09 04:31:55,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872308014] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:31:55,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567925852] [2025-01-09 04:31:55,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:55,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:31:55,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:31:55,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:31:55,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 04:31:56,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 790 statements into 1 equivalence classes. [2025-01-09 04:31:56,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 790 of 790 statements. [2025-01-09 04:31:56,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:56,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:56,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 2836 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 04:31:56,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:31:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14974 backedges. 7131 proven. 0 refuted. 0 times theorem prover too weak. 7843 trivial. 0 not checked. [2025-01-09 04:31:56,517 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 04:31:56,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567925852] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:31:56,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 04:31:56,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2025-01-09 04:31:56,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832567062] [2025-01-09 04:31:56,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:31:56,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:31:56,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:31:56,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:31:56,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-09 04:31:56,521 INFO L87 Difference]: Start difference. First operand 1436 states and 2126 transitions. Second operand has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 3 states have call successors, (95), 3 states have call predecessors, (95), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2025-01-09 04:31:56,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:31:56,771 INFO L93 Difference]: Finished difference Result 2040 states and 3010 transitions. [2025-01-09 04:31:56,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:31:56,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 3 states have call successors, (95), 3 states have call predecessors, (95), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) Word has length 790 [2025-01-09 04:31:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:31:56,790 INFO L225 Difference]: With dead ends: 2040 [2025-01-09 04:31:56,790 INFO L226 Difference]: Without dead ends: 1424 [2025-01-09 04:31:56,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 04:31:56,794 INFO L435 NwaCegarLoop]: 1714 mSDtfsCounter, 49 mSDsluCounter, 5001 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 6715 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:31:56,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 6715 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:31:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2025-01-09 04:31:56,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1424. [2025-01-09 04:31:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 920 states have (on average 1.2597826086956523) internal successors, (1159), 954 states have internal predecessors, (1159), 454 states have call successors, (454), 42 states have call predecessors, (454), 49 states have return successors, (497), 456 states have call predecessors, (497), 454 states have call successors, (497) [2025-01-09 04:31:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2110 transitions. [2025-01-09 04:31:56,987 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2110 transitions. Word has length 790 [2025-01-09 04:31:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:31:56,988 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 2110 transitions. [2025-01-09 04:31:56,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 3 states have call successors, (95), 3 states have call predecessors, (95), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2025-01-09 04:31:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2110 transitions. [2025-01-09 04:31:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2025-01-09 04:31:57,011 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:31:57,011 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:31:57,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 04:31:57,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:31:57,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:31:57,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:31:57,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2098018546, now seen corresponding path program 1 times [2025-01-09 04:31:57,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:31:57,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254469744] [2025-01-09 04:31:57,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:57,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:31:57,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 796 statements into 1 equivalence classes. [2025-01-09 04:31:57,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 796 of 796 statements. [2025-01-09 04:31:57,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:57,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 14978 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14976 trivial. 0 not checked. [2025-01-09 04:31:57,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:31:57,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254469744] [2025-01-09 04:31:57,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254469744] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:31:57,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161138997] [2025-01-09 04:31:57,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:31:57,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:31:57,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:31:57,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:31:57,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 04:31:58,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 796 statements into 1 equivalence classes. [2025-01-09 04:31:58,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 796 of 796 statements. [2025-01-09 04:31:58,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:31:58,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:31:58,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 2857 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:31:58,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:31:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 14978 backedges. 7131 proven. 0 refuted. 0 times theorem prover too weak. 7847 trivial. 0 not checked. [2025-01-09 04:31:59,898 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 04:31:59,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161138997] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:31:59,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 04:31:59,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-01-09 04:31:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292652465] [2025-01-09 04:31:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:31:59,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 04:31:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:31:59,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 04:31:59,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:31:59,900 INFO L87 Difference]: Start difference. First operand 1424 states and 2110 transitions. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2025-01-09 04:32:00,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:32:00,081 INFO L93 Difference]: Finished difference Result 2052 states and 3088 transitions. [2025-01-09 04:32:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 04:32:00,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 796 [2025-01-09 04:32:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:32:00,091 INFO L225 Difference]: With dead ends: 2052 [2025-01-09 04:32:00,091 INFO L226 Difference]: Without dead ends: 1424 [2025-01-09 04:32:00,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:32:00,096 INFO L435 NwaCegarLoop]: 1695 mSDtfsCounter, 1404 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:32:00,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 1695 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:32:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2025-01-09 04:32:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1424. [2025-01-09 04:32:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 920 states have (on average 1.251086956521739) internal successors, (1151), 954 states have internal predecessors, (1151), 454 states have call successors, (454), 42 states have call predecessors, (454), 49 states have return successors, (497), 456 states have call predecessors, (497), 454 states have call successors, (497) [2025-01-09 04:32:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2102 transitions. [2025-01-09 04:32:00,355 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2102 transitions. Word has length 796 [2025-01-09 04:32:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:32:00,356 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 2102 transitions. [2025-01-09 04:32:00,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2025-01-09 04:32:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2102 transitions. [2025-01-09 04:32:00,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2025-01-09 04:32:00,386 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:32:00,387 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:32:00,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 04:32:00,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:32:00,588 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:32:00,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:32:00,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1256738698, now seen corresponding path program 1 times [2025-01-09 04:32:00,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:32:00,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016146538] [2025-01-09 04:32:00,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:32:00,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:32:00,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 798 statements into 1 equivalence classes. [2025-01-09 04:32:00,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 798 of 798 statements. [2025-01-09 04:32:00,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:32:00,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:32:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14979 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 14967 trivial. 0 not checked. [2025-01-09 04:32:01,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:32:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016146538] [2025-01-09 04:32:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016146538] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:32:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79768516] [2025-01-09 04:32:01,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:32:01,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:32:01,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:32:01,611 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:32:01,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 04:32:02,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 798 statements into 1 equivalence classes. [2025-01-09 04:32:02,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 798 of 798 statements. [2025-01-09 04:32:02,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:32:02,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:32:02,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 2867 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 04:32:02,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:32:02,872 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 61 [2025-01-09 04:32:03,151 INFO L224 Elim1Store]: Index analysis took 264 ms [2025-01-09 04:32:03,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 276 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 46 [2025-01-09 04:32:08,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 04:32:08,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 127 treesize of output 79 [2025-01-09 04:32:09,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 04:32:09,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 20 [2025-01-09 04:32:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 14979 backedges. 8118 proven. 100 refuted. 0 times theorem prover too weak. 6761 trivial. 0 not checked. [2025-01-09 04:32:09,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:32:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14979 backedges. 96 proven. 162 refuted. 0 times theorem prover too weak. 14721 trivial. 0 not checked. [2025-01-09 04:32:10,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79768516] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:32:10,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:32:10,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 23 [2025-01-09 04:32:10,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364099370] [2025-01-09 04:32:10,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:32:10,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 04:32:10,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:32:10,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 04:32:10,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:32:10,890 INFO L87 Difference]: Start difference. First operand 1424 states and 2102 transitions. Second operand has 23 states, 21 states have (on average 41.095238095238095) internal successors, (863), 23 states have internal predecessors, (863), 10 states have call successors, (213), 6 states have call predecessors, (213), 8 states have return successors, (215), 9 states have call predecessors, (215), 10 states have call successors, (215)