./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-1.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/rekh_nxt.1.M1-1.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 d2d3aad0694c3b388c0809528dd70602c78583397ee307f7b8ddb787c2822233 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:33:49,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:33:49,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:33:49,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:33:49,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:33:49,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:33:49,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:33:49,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:33:49,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:33:49,327 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:33:49,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:33:49,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:33:49,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:33:49,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:33:49,327 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:33:49,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:33:49,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:33:49,328 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:33:49,329 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:33:49,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:33:49,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:33:49,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:33:49,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:33:49,329 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:33:49,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:33:49,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:33:49,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:33:49,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:33:49,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:33:49,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:33:49,330 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:33:49,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:33:49,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:33:49,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:33:49,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:33:49,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:33:49,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:33:49,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:33:49,330 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 -> d2d3aad0694c3b388c0809528dd70602c78583397ee307f7b8ddb787c2822233 [2025-01-09 04:33:49,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:33:49,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:33:49,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:33:49,585 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:33:49,586 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:33:49,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-1.c [2025-01-09 04:33:50,741 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb4a83f61/db3f2595c2d4483f923bc6a92cddaa4f/FLAG946545262 [2025-01-09 04:33:51,119 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:33:51,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-1.c [2025-01-09 04:33:51,137 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb4a83f61/db3f2595c2d4483f923bc6a92cddaa4f/FLAG946545262 [2025-01-09 04:33:51,334 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb4a83f61/db3f2595c2d4483f923bc6a92cddaa4f [2025-01-09 04:33:51,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:33:51,341 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:33:51,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:33:51,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:33:51,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:33:51,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:33:51" (1/1) ... [2025-01-09 04:33:51,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4b73b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:51, skipping insertion in model container [2025-01-09 04:33:51,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:33:51" (1/1) ... [2025-01-09 04:33:51,421 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:33:51,648 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/rekh_nxt.1.M1-1.c[1510,1523] [2025-01-09 04:33:51,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:33:51,956 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:33:51,961 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.bug1.i","-S") [38] [2025-01-09 04:33:51,965 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/rekh_nxt.1.M1-1.c[1510,1523] [2025-01-09 04:33:52,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:33:52,153 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:33:52,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52 WrapperNode [2025-01-09 04:33:52,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:33:52,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:33:52,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:33:52,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:33:52,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,385 INFO L138 Inliner]: procedures = 55, calls = 2249, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4880 [2025-01-09 04:33:52,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:33:52,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:33:52,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:33:52,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:33:52,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,511 INFO L175 MemorySlicer]: Split 1588 memory accesses to 15 slices as follows [2, 8, 277, 285, 7, 113, 113, 4, 181, 203, 180, 2, 203, 2, 8]. 18 percent of accesses are in the largest equivalence class. The 220 initializations are split as follows [2, 0, 27, 27, 2, 27, 27, 0, 27, 27, 27, 0, 27, 0, 0]. The 229 writes are split as follows [0, 4, 27, 27, 3, 27, 27, 0, 28, 26, 28, 1, 26, 1, 4]. [2025-01-09 04:33:52,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,673 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:33:52,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:33:52,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:33:52,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:33:52,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (1/1) ... [2025-01-09 04:33:52,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:33:52,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:33:52,802 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 04:33:52,805 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 04:33:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:33:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2025-01-09 04:33:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2025-01-09 04:33:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2025-01-09 04:33:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2025-01-09 04:33:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 04:33:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2025-01-09 04:33:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2025-01-09 04:33:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2025-01-09 04:33:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2025-01-09 04:33:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2025-01-09 04:33:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2025-01-09 04:33:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 04:33:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 04:33:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 04:33:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 04:33:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-09 04:33:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-09 04:33:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-01-09 04:33:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-01-09 04:33:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-01-09 04:33:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-01-09 04:33:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-01-09 04:33:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-01-09 04:33:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-01-09 04:33:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-01-09 04:33:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-01-09 04:33:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2025-01-09 04:33:52,824 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2025-01-09 04:33:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2025-01-09 04:33:52,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2025-01-09 04:33:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-01-09 04:33:52,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-01-09 04:33:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-01-09 04:33:52,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2025-01-09 04:33:52,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2025-01-09 04:33:52,827 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 04:33:52,827 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 04:33:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:33:52,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2025-01-09 04:33:52,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2025-01-09 04:33:52,828 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2025-01-09 04:33:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2025-01-09 04:33:52,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2025-01-09 04:33:53,167 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:33:53,168 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:34:00,609 INFO L? ?]: Removed 347 outVars from TransFormulas that were not future-live. [2025-01-09 04:34:00,610 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:34:00,643 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:34:00,644 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:34:00,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:34:00 BoogieIcfgContainer [2025-01-09 04:34:00,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:34:00,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:34:00,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:34:00,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:34:00,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:33:51" (1/3) ... [2025-01-09 04:34:00,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7189541f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:34:00, skipping insertion in model container [2025-01-09 04:34:00,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:33:52" (2/3) ... [2025-01-09 04:34:00,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7189541f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:34:00, skipping insertion in model container [2025-01-09 04:34:00,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:34:00" (3/3) ... [2025-01-09 04:34:00,652 INFO L128 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M1-1.c [2025-01-09 04:34:00,661 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:34:00,663 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekh_nxt.1.M1-1.c that has 16 procedures, 1472 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 04:34:00,735 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:34:00,742 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;@13e17c66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:34:00,743 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:34:00,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 1472 states, 844 states have (on average 1.2618483412322274) internal successors, (1065), 973 states have internal predecessors, (1065), 611 states have call successors, (611), 15 states have call predecessors, (611), 15 states have return successors, (611), 512 states have call predecessors, (611), 611 states have call successors, (611) [2025-01-09 04:34:00,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2131 [2025-01-09 04:34:00,867 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:34:00,869 INFO L218 NwaCegarLoop]: trace histogram [241, 241, 241, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:34:00,869 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:34:00,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:34:00,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1350497339, now seen corresponding path program 1 times [2025-01-09 04:34:00,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:34:00,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953878369] [2025-01-09 04:34:00,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:00,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:34:01,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2130 statements into 1 equivalence classes. [2025-01-09 04:34:01,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2130 of 2130 statements. [2025-01-09 04:34:01,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:01,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 121056 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 120576 trivial. 0 not checked. [2025-01-09 04:34:03,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:34:03,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953878369] [2025-01-09 04:34:03,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953878369] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:34:03,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57713693] [2025-01-09 04:34:03,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:03,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:34:03,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:34:03,065 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 04:34:03,066 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 04:34:04,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2130 statements into 1 equivalence classes. [2025-01-09 04:34:04,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2130 of 2130 statements. [2025-01-09 04:34:04,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:04,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:04,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 7426 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 04:34:04,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:34:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 121056 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 120576 trivial. 0 not checked. [2025-01-09 04:34:05,005 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 04:34:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57713693] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:34:05,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 04:34:05,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 04:34:05,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157246988] [2025-01-09 04:34:05,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:34:05,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 04:34:05,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:34:05,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 04:34:05,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 04:34:05,064 INFO L87 Difference]: Start difference. First operand has 1472 states, 844 states have (on average 1.2618483412322274) internal successors, (1065), 973 states have internal predecessors, (1065), 611 states have call successors, (611), 15 states have call predecessors, (611), 15 states have return successors, (611), 512 states have call predecessors, (611), 611 states have call successors, (611) Second operand has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (273), 1 states have call predecessors, (273), 2 states have call successors, (273) [2025-01-09 04:34:05,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:34:05,241 INFO L93 Difference]: Finished difference Result 2939 states and 5163 transitions. [2025-01-09 04:34:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 04:34:05,243 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (273), 1 states have call predecessors, (273), 2 states have call successors, (273) Word has length 2130 [2025-01-09 04:34:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:34:05,277 INFO L225 Difference]: With dead ends: 2939 [2025-01-09 04:34:05,284 INFO L226 Difference]: Without dead ends: 1467 [2025-01-09 04:34:05,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2131 GetRequests, 2131 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 04:34:05,311 INFO L435 NwaCegarLoop]: 2285 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:34:05,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:34:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2025-01-09 04:34:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1467. [2025-01-09 04:34:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 840 states have (on average 1.2595238095238095) internal successors, (1058), 968 states have internal predecessors, (1058), 611 states have call successors, (611), 15 states have call predecessors, (611), 15 states have return successors, (611), 512 states have call predecessors, (611), 611 states have call successors, (611) [2025-01-09 04:34:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2280 transitions. [2025-01-09 04:34:05,608 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2280 transitions. Word has length 2130 [2025-01-09 04:34:05,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:34:05,609 INFO L471 AbstractCegarLoop]: Abstraction has 1467 states and 2280 transitions. [2025-01-09 04:34:05,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (273), 1 states have call predecessors, (273), 2 states have call successors, (273) [2025-01-09 04:34:05,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2280 transitions. [2025-01-09 04:34:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2131 [2025-01-09 04:34:05,661 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:34:05,662 INFO L218 NwaCegarLoop]: trace histogram [241, 241, 241, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:34:05,681 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 04:34:05,863 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 04:34:05,864 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:34:05,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:34:05,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1962103243, now seen corresponding path program 1 times [2025-01-09 04:34:05,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:34:05,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842378604] [2025-01-09 04:34:05,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:05,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:34:06,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2130 statements into 1 equivalence classes. [2025-01-09 04:34:06,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2130 of 2130 statements. [2025-01-09 04:34:06,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:06,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 121056 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 120941 trivial. 0 not checked. [2025-01-09 04:34:08,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:34:08,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842378604] [2025-01-09 04:34:08,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842378604] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:34:08,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862246780] [2025-01-09 04:34:08,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:08,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:34:08,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:34:08,216 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 04:34:08,218 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 04:34:09,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2130 statements into 1 equivalence classes. [2025-01-09 04:34:09,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2130 of 2130 statements. [2025-01-09 04:34:09,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:09,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:09,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 7426 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 04:34:09,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:34:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 121056 backedges. 27793 proven. 0 refuted. 0 times theorem prover too weak. 93263 trivial. 0 not checked. [2025-01-09 04:34:09,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 04:34:09,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862246780] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:34:09,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 04:34:09,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2025-01-09 04:34:09,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323652001] [2025-01-09 04:34:09,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:34:09,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 04:34:09,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:34:09,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 04:34:09,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 04:34:09,937 INFO L87 Difference]: Start difference. First operand 1467 states and 2280 transitions. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 2 states have call successors, (274), 2 states have call predecessors, (274), 2 states have return successors, (274), 2 states have call predecessors, (274), 2 states have call successors, (274) [2025-01-09 04:34:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:34:10,044 INFO L93 Difference]: Finished difference Result 2459 states and 3872 transitions. [2025-01-09 04:34:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 04:34:10,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 2 states have call successors, (274), 2 states have call predecessors, (274), 2 states have return successors, (274), 2 states have call predecessors, (274), 2 states have call successors, (274) Word has length 2130 [2025-01-09 04:34:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:34:10,068 INFO L225 Difference]: With dead ends: 2459 [2025-01-09 04:34:10,068 INFO L226 Difference]: Without dead ends: 1467 [2025-01-09 04:34:10,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2132 GetRequests, 2131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 04:34:10,075 INFO L435 NwaCegarLoop]: 2278 mSDtfsCounter, 0 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4546 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 04:34:10,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4546 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:34:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2025-01-09 04:34:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1467. [2025-01-09 04:34:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 840 states have (on average 1.2583333333333333) internal successors, (1057), 968 states have internal predecessors, (1057), 611 states have call successors, (611), 15 states have call predecessors, (611), 15 states have return successors, (611), 512 states have call predecessors, (611), 611 states have call successors, (611) [2025-01-09 04:34:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2279 transitions. [2025-01-09 04:34:10,379 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2279 transitions. Word has length 2130 [2025-01-09 04:34:10,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:34:10,385 INFO L471 AbstractCegarLoop]: Abstraction has 1467 states and 2279 transitions. [2025-01-09 04:34:10,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 2 states have call successors, (274), 2 states have call predecessors, (274), 2 states have return successors, (274), 2 states have call predecessors, (274), 2 states have call successors, (274) [2025-01-09 04:34:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2279 transitions. [2025-01-09 04:34:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2323 [2025-01-09 04:34:10,419 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:34:10,420 INFO L218 NwaCegarLoop]: trace histogram [241, 241, 241, 48, 48, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:34:10,438 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 04:34:10,620 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 04:34:10,621 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:34:10,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:34:10,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1563656907, now seen corresponding path program 1 times [2025-01-09 04:34:10,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:34:10,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595704722] [2025-01-09 04:34:10,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:10,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:34:10,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2322 statements into 1 equivalence classes. [2025-01-09 04:34:11,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2322 of 2322 statements. [2025-01-09 04:34:11,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:11,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 124992 backedges. 4 proven. 116 refuted. 0 times theorem prover too weak. 124872 trivial. 0 not checked. [2025-01-09 04:34:13,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:34:13,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595704722] [2025-01-09 04:34:13,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595704722] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:34:13,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225384235] [2025-01-09 04:34:13,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:13,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:34:13,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:34:13,286 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 04:34:13,290 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 04:34:14,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2322 statements into 1 equivalence classes. [2025-01-09 04:34:15,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2322 of 2322 statements. [2025-01-09 04:34:15,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:15,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:15,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 8194 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 04:34:15,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:34:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 124992 backedges. 27563 proven. 0 refuted. 0 times theorem prover too weak. 97429 trivial. 0 not checked. [2025-01-09 04:34:15,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 04:34:15,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225384235] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:34:15,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 04:34:15,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2025-01-09 04:34:15,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728624489] [2025-01-09 04:34:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:34:15,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:34:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:34:15,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:34:15,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-09 04:34:15,306 INFO L87 Difference]: Start difference. First operand 1467 states and 2279 transitions. Second operand has 5 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 3 states have call successors, (280), 3 states have call predecessors, (280), 3 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) [2025-01-09 04:34:16,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:34:16,852 INFO L93 Difference]: Finished difference Result 2695 states and 4224 transitions. [2025-01-09 04:34:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:34:16,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 3 states have call successors, (280), 3 states have call predecessors, (280), 3 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) Word has length 2322 [2025-01-09 04:34:16,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:34:16,868 INFO L225 Difference]: With dead ends: 2695 [2025-01-09 04:34:16,870 INFO L226 Difference]: Without dead ends: 1703 [2025-01-09 04:34:16,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2328 GetRequests, 2321 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 04:34:16,879 INFO L435 NwaCegarLoop]: 2266 mSDtfsCounter, 1331 mSDsluCounter, 4394 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 6660 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-09 04:34:16,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 6660 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-09 04:34:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2025-01-09 04:34:17,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1703. [2025-01-09 04:34:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1016 states have (on average 1.2726377952755905) internal successors, (1293), 1144 states have internal predecessors, (1293), 666 states have call successors, (666), 20 states have call predecessors, (666), 20 states have return successors, (666), 567 states have call predecessors, (666), 666 states have call successors, (666) [2025-01-09 04:34:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2625 transitions. [2025-01-09 04:34:17,021 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2625 transitions. Word has length 2322 [2025-01-09 04:34:17,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:34:17,025 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 2625 transitions. [2025-01-09 04:34:17,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 3 states have call successors, (280), 3 states have call predecessors, (280), 3 states have return successors, (280), 3 states have call predecessors, (280), 3 states have call successors, (280) [2025-01-09 04:34:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2625 transitions. [2025-01-09 04:34:17,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2311 [2025-01-09 04:34:17,057 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:34:17,057 INFO L218 NwaCegarLoop]: trace histogram [241, 241, 241, 48, 48, 27, 27, 27, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:34:17,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 04:34:17,258 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 04:34:17,258 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:34:17,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:34:17,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1827930280, now seen corresponding path program 1 times [2025-01-09 04:34:17,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:34:17,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005098465] [2025-01-09 04:34:17,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:34:17,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2310 statements into 1 equivalence classes. [2025-01-09 04:34:17,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2310 of 2310 statements. [2025-01-09 04:34:17,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:17,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 125124 backedges. 0 proven. 357 refuted. 0 times theorem prover too weak. 124767 trivial. 0 not checked. [2025-01-09 04:34:21,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:34:21,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005098465] [2025-01-09 04:34:21,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005098465] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:34:21,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909245202] [2025-01-09 04:34:21,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:21,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:34:21,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:34:21,755 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 04:34:21,757 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 04:34:22,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2310 statements into 1 equivalence classes. [2025-01-09 04:34:23,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2310 of 2310 statements. [2025-01-09 04:34:23,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:23,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:23,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 8158 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 04:34:23,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:34:23,630 INFO L134 CoverageAnalysis]: Checked inductivity of 125124 backedges. 25585 proven. 2 refuted. 0 times theorem prover too weak. 99537 trivial. 0 not checked. [2025-01-09 04:34:23,630 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:34:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 125124 backedges. 12 proven. 144 refuted. 0 times theorem prover too weak. 124968 trivial. 0 not checked. [2025-01-09 04:34:24,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909245202] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:34:24,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:34:24,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2025-01-09 04:34:24,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822574133] [2025-01-09 04:34:24,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:34:24,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 04:34:24,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:34:24,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 04:34:24,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-01-09 04:34:24,936 INFO L87 Difference]: Start difference. First operand 1703 states and 2625 transitions. Second operand has 13 states, 11 states have (on average 47.90909090909091) internal successors, (527), 13 states have internal predecessors, (527), 7 states have call successors, (346), 4 states have call predecessors, (346), 5 states have return successors, (348), 5 states have call predecessors, (348), 7 states have call successors, (348) [2025-01-09 04:34:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:34:28,599 INFO L93 Difference]: Finished difference Result 2938 states and 4573 transitions. [2025-01-09 04:34:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:34:28,600 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 47.90909090909091) internal successors, (527), 13 states have internal predecessors, (527), 7 states have call successors, (346), 4 states have call predecessors, (346), 5 states have return successors, (348), 5 states have call predecessors, (348), 7 states have call successors, (348) Word has length 2310 [2025-01-09 04:34:28,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:34:28,623 INFO L225 Difference]: With dead ends: 2938 [2025-01-09 04:34:28,626 INFO L226 Difference]: Without dead ends: 1710 [2025-01-09 04:34:28,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4626 GetRequests, 4614 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2025-01-09 04:34:28,636 INFO L435 NwaCegarLoop]: 2607 mSDtfsCounter, 2572 mSDsluCounter, 8066 mSDsCounter, 0 mSdLazyCounter, 6165 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 10673 SdHoareTripleChecker+Invalid, 6193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-01-09 04:34:28,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2572 Valid, 10673 Invalid, 6193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 6165 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-01-09 04:34:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2025-01-09 04:34:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1710. [2025-01-09 04:34:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1022 states have (on average 1.2681017612524461) internal successors, (1296), 1150 states have internal predecessors, (1296), 665 states have call successors, (665), 22 states have call predecessors, (665), 22 states have return successors, (665), 566 states have call predecessors, (665), 665 states have call successors, (665) [2025-01-09 04:34:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2626 transitions. [2025-01-09 04:34:28,870 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2626 transitions. Word has length 2310 [2025-01-09 04:34:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:34:28,871 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 2626 transitions. [2025-01-09 04:34:28,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 47.90909090909091) internal successors, (527), 13 states have internal predecessors, (527), 7 states have call successors, (346), 4 states have call predecessors, (346), 5 states have return successors, (348), 5 states have call predecessors, (348), 7 states have call successors, (348) [2025-01-09 04:34:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2626 transitions. [2025-01-09 04:34:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2435 [2025-01-09 04:34:28,905 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:34:28,906 INFO L218 NwaCegarLoop]: trace histogram [241, 241, 241, 48, 48, 27, 27, 27, 26, 26, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:34:28,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 04:34:29,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:34:29,110 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:34:29,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:34:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1810271973, now seen corresponding path program 1 times [2025-01-09 04:34:29,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:34:29,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327197418] [2025-01-09 04:34:29,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:29,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:34:29,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2434 statements into 1 equivalence classes. [2025-01-09 04:34:29,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2434 of 2434 statements. [2025-01-09 04:34:29,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:29,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 126452 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 126441 trivial. 0 not checked. [2025-01-09 04:34:33,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:34:33,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327197418] [2025-01-09 04:34:33,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327197418] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:34:33,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492869703] [2025-01-09 04:34:33,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:33,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:34:33,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:34:33,298 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 04:34:33,299 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 04:34:34,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2434 statements into 1 equivalence classes. [2025-01-09 04:34:34,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2434 of 2434 statements. [2025-01-09 04:34:34,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:34,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:35,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 8458 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 04:34:35,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:34:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 126452 backedges. 25691 proven. 0 refuted. 0 times theorem prover too weak. 100761 trivial. 0 not checked. [2025-01-09 04:34:36,571 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 04:34:36,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492869703] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:34:36,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 04:34:36,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-01-09 04:34:36,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271987453] [2025-01-09 04:34:36,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:34:36,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:34:36,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:34:36,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:34:36,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-01-09 04:34:36,578 INFO L87 Difference]: Start difference. First operand 1710 states and 2626 transitions. Second operand has 5 states, 5 states have (on average 95.4) internal successors, (477), 4 states have internal predecessors, (477), 3 states have call successors, (282), 3 states have call predecessors, (282), 2 states have return successors, (282), 2 states have call predecessors, (282), 3 states have call successors, (282) [2025-01-09 04:34:38,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:34:38,414 INFO L93 Difference]: Finished difference Result 2945 states and 4582 transitions. [2025-01-09 04:34:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:34:38,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 4 states have internal predecessors, (477), 3 states have call successors, (282), 3 states have call predecessors, (282), 2 states have return successors, (282), 2 states have call predecessors, (282), 3 states have call successors, (282) Word has length 2434 [2025-01-09 04:34:38,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:34:38,431 INFO L225 Difference]: With dead ends: 2945 [2025-01-09 04:34:38,431 INFO L226 Difference]: Without dead ends: 1710 [2025-01-09 04:34:38,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2439 GetRequests, 2433 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-01-09 04:34:38,439 INFO L435 NwaCegarLoop]: 2437 mSDtfsCounter, 2366 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2366 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-01-09 04:34:38,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2366 Valid, 3562 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-01-09 04:34:38,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2025-01-09 04:34:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1710. [2025-01-09 04:34:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1022 states have (on average 1.264187866927593) internal successors, (1292), 1150 states have internal predecessors, (1292), 665 states have call successors, (665), 22 states have call predecessors, (665), 22 states have return successors, (665), 566 states have call predecessors, (665), 665 states have call successors, (665) [2025-01-09 04:34:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2622 transitions. [2025-01-09 04:34:38,774 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2622 transitions. Word has length 2434 [2025-01-09 04:34:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:34:38,781 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 2622 transitions. [2025-01-09 04:34:38,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 4 states have internal predecessors, (477), 3 states have call successors, (282), 3 states have call predecessors, (282), 2 states have return successors, (282), 2 states have call predecessors, (282), 3 states have call successors, (282) [2025-01-09 04:34:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2622 transitions. [2025-01-09 04:34:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2436 [2025-01-09 04:34:38,844 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:34:38,845 INFO L218 NwaCegarLoop]: trace histogram [241, 241, 241, 48, 48, 27, 27, 27, 26, 26, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:34:38,869 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 04:34:39,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:34:39,049 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:34:39,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:34:39,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1938190250, now seen corresponding path program 1 times [2025-01-09 04:34:39,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:34:39,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503686436] [2025-01-09 04:34:39,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:34:39,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2435 statements into 1 equivalence classes. [2025-01-09 04:34:39,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2435 of 2435 statements. [2025-01-09 04:34:39,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:39,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 126452 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 126441 trivial. 0 not checked. [2025-01-09 04:34:43,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:34:43,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503686436] [2025-01-09 04:34:43,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503686436] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:34:43,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307324683] [2025-01-09 04:34:43,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:34:43,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:34:43,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:34:43,331 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 04:34:43,332 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 04:34:44,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2435 statements into 1 equivalence classes. [2025-01-09 04:34:45,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2435 of 2435 statements. [2025-01-09 04:34:45,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:34:45,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:34:45,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 8463 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-01-09 04:34:45,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:34:45,171 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 11 treesize of output 7 [2025-01-09 04:34:45,342 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 301 treesize of output 1 [2025-01-09 04:34:52,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 351 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 11 [2025-01-09 04:34:52,681 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 7 treesize of output 3 [2025-01-09 04:34:53,791 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 04:34:53,818 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 7 treesize of output 3 [2025-01-09 04:34:54,164 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2025-01-09 04:34:54,164 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 20 treesize of output 16 [2025-01-09 04:34:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 126452 backedges. 64828 proven. 3678 refuted. 0 times theorem prover too weak. 57946 trivial. 0 not checked. [2025-01-09 04:34:54,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:34:55,778 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 14 treesize of output 6 [2025-01-09 04:34:57,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307324683] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:34:57,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 04:34:57,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 25] total 29 [2025-01-09 04:34:57,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293010206] [2025-01-09 04:34:57,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 04:34:57,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 04:34:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:34:57,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 04:34:57,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1765, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 04:34:57,093 INFO L87 Difference]: Start difference. First operand 1710 states and 2622 transitions. Second operand has 29 states, 26 states have (on average 31.73076923076923) internal successors, (825), 27 states have internal predecessors, (825), 15 states have call successors, (563), 11 states have call predecessors, (563), 14 states have return successors, (564), 13 states have call predecessors, (564), 15 states have call successors, (564) [2025-01-09 04:35:01,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:35:02,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:35:03,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:35:07,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:35:08,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:35:11,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:35:12,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:35:14,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 04:35:16,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []