./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:07:43,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:07:43,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:07:43,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:07:43,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:07:43,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:07:43,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:07:43,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:07:43,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:07:43,585 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:07:43,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:07:43,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:07:43,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:07:43,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:07:43,585 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:07:43,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:07:43,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:07:43,586 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:07:43,587 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:07:43,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:07:43,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:07:43,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:07:43,588 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/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2025-03-08 06:07:43,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:07:43,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:07:43,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:07:43,854 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:07:43,854 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:07:43,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2025-03-08 06:07:45,323 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74ce5549/8b6ef8284ce44bafada9a92d8b23047b/FLAG91157e10d [2025-03-08 06:07:45,885 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:07:45,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2025-03-08 06:07:45,927 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74ce5549/8b6ef8284ce44bafada9a92d8b23047b/FLAG91157e10d [2025-03-08 06:07:45,988 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74ce5549/8b6ef8284ce44bafada9a92d8b23047b [2025-03-08 06:07:45,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:07:45,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:07:45,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:07:45,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:07:45,999 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:07:46,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:07:45" (1/1) ... [2025-03-08 06:07:46,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf96ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:46, skipping insertion in model container [2025-03-08 06:07:46,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:07:45" (1/1) ... [2025-03-08 06:07:46,077 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:07:46,353 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2025-03-08 06:07:46,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:07:46,909 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:07:46,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2025-03-08 06:07:46,936 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2025-03-08 06:07:47,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:07:47,280 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:07:47,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47 WrapperNode [2025-03-08 06:07:47,289 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:07:47,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:07:47,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:07:47,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:07:47,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:47,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:47,713 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3990 [2025-03-08 06:07:47,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:07:47,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:07:47,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:07:47,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:07:47,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:47,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:47,791 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:47,896 INFO L175 MemorySlicer]: Split 1382 memory accesses to 17 slices as follows [2, 2, 264, 305, 156, 113, 79, 57, 8, 83, 105, 82, 105, 2, 4, 8, 7]. 22 percent of accesses are in the largest equivalence class. The 166 initializations are split as follows [2, 0, 24, 24, 2, 2, 1, 1, 0, 27, 27, 27, 27, 0, 0, 0, 2]. The 175 writes are split as follows [0, 1, 24, 24, 2, 2, 1, 1, 4, 28, 26, 28, 26, 1, 0, 4, 3]. [2025-03-08 06:07:47,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:47,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:48,081 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:48,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:48,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:48,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:48,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:07:48,234 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:07:48,234 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:07:48,234 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:07:48,235 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (1/1) ... [2025-03-08 06:07:48,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:07:48,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:07:48,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 06:07:48,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 06:07:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:07:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2025-03-08 06:07:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2025-03-08 06:07:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2025-03-08 06:07:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2025-03-08 06:07:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 06:07:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2025-03-08 06:07:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2025-03-08 06:07:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2025-03-08 06:07:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2025-03-08 06:07:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2025-03-08 06:07:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2025-03-08 06:07:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 06:07:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 06:07:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 06:07:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 06:07:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 06:07:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 06:07:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 06:07:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-08 06:07:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-08 06:07:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-08 06:07:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-08 06:07:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-08 06:07:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-08 06:07:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-08 06:07:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-08 06:07:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-03-08 06:07:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-03-08 06:07:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2025-03-08 06:07:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2025-03-08 06:07:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2025-03-08 06:07:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-08 06:07:48,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-08 06:07:48,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-08 06:07:48,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-08 06:07:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2025-03-08 06:07:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 06:07:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-08 06:07:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:07:48,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:07:48,484 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2025-03-08 06:07:48,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2025-03-08 06:07:48,484 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2025-03-08 06:07:48,484 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2025-03-08 06:07:48,484 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2025-03-08 06:07:48,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2025-03-08 06:07:48,941 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:07:48,943 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:07:49,571 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L209: call ULTIMATE.dealloc(OSEK_Task_ts1_~#pwm_l~0#1.base, OSEK_Task_ts1_~#pwm_l~0#1.offset);havoc OSEK_Task_ts1_~#pwm_l~0#1.base, OSEK_Task_ts1_~#pwm_l~0#1.offset;call ULTIMATE.dealloc(OSEK_Task_ts1_~#pwm_r~0#1.base, OSEK_Task_ts1_~#pwm_r~0#1.offset);havoc OSEK_Task_ts1_~#pwm_r~0#1.base, OSEK_Task_ts1_~#pwm_r~0#1.offset; [2025-03-08 06:07:49,571 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L82: call ULTIMATE.dealloc(balance_control_~#tmp~0#1.base, balance_control_~#tmp~0#1.offset);havoc balance_control_~#tmp~0#1.base, balance_control_~#tmp~0#1.offset;call ULTIMATE.dealloc(balance_control_~#tmp_theta_0~0#1.base, balance_control_~#tmp_theta_0~0#1.offset);havoc balance_control_~#tmp_theta_0~0#1.base, balance_control_~#tmp_theta_0~0#1.offset; [2025-03-08 06:07:55,839 INFO L? ?]: Removed 191 outVars from TransFormulas that were not future-live. [2025-03-08 06:07:55,839 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:07:55,908 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:07:55,912 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:07:55,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:07:55 BoogieIcfgContainer [2025-03-08 06:07:55,916 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:07:55,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:07:55,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:07:55,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:07:55,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:07:45" (1/3) ... [2025-03-08 06:07:55,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0a719e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:07:55, skipping insertion in model container [2025-03-08 06:07:55,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:07:47" (2/3) ... [2025-03-08 06:07:55,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0a719e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:07:55, skipping insertion in model container [2025-03-08 06:07:55,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:07:55" (3/3) ... [2025-03-08 06:07:55,932 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2025-03-08 06:07:55,962 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:07:55,968 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M1-2.c that has 16 procedures, 1137 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 06:07:56,135 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:07:56,162 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;@2695dc40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:07:56,164 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 06:07:56,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 1137 states, 728 states have (on average 1.2884615384615385) internal successors, (938), 760 states have internal predecessors, (938), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2025-03-08 06:07:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-03-08 06:07:56,293 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:07:56,295 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:07:56,295 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:07:56,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:07:56,305 INFO L85 PathProgramCache]: Analyzing trace with hash -554561153, now seen corresponding path program 1 times [2025-03-08 06:07:56,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:07:56,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206299440] [2025-03-08 06:07:56,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:07:56,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:07:57,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-08 06:07:57,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-08 06:07:57,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:07:57,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:07:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2025-03-08 06:07:58,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:07:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206299440] [2025-03-08 06:07:58,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206299440] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:07:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556191801] [2025-03-08 06:07:58,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:07:58,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:07:58,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:07:58,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:07:58,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 06:07:59,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-08 06:07:59,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-08 06:07:59,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:07:59,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:07:59,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 06:07:59,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:07:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2025-03-08 06:07:59,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:07:59,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556191801] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:07:59,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:07:59,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 06:07:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107863004] [2025-03-08 06:07:59,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:07:59,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 06:07:59,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:08:00,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 06:08:00,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 06:08:00,013 INFO L87 Difference]: Start difference. First operand has 1137 states, 728 states have (on average 1.2884615384615385) internal successors, (938), 760 states have internal predecessors, (938), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) Second operand has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2025-03-08 06:08:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:08:00,257 INFO L93 Difference]: Finished difference Result 2269 states and 3814 transitions. [2025-03-08 06:08:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 06:08:00,261 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) Word has length 722 [2025-03-08 06:08:00,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:08:00,303 INFO L225 Difference]: With dead ends: 2269 [2025-03-08 06:08:00,312 INFO L226 Difference]: Without dead ends: 1131 [2025-03-08 06:08:00,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 06:08:00,337 INFO L435 NwaCegarLoop]: 1720 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:08:00,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:08:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2025-03-08 06:08:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1131. [2025-03-08 06:08:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 723 states have (on average 1.2849239280774551) internal successors, (929), 754 states have internal predecessors, (929), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2025-03-08 06:08:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1713 transitions. [2025-03-08 06:08:00,900 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1713 transitions. Word has length 722 [2025-03-08 06:08:00,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:08:00,902 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 1713 transitions. [2025-03-08 06:08:00,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2025-03-08 06:08:00,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1713 transitions. [2025-03-08 06:08:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-03-08 06:08:00,945 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:08:00,946 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:08:00,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 06:08:01,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 06:08:01,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:08:01,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:08:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1049830414, now seen corresponding path program 1 times [2025-03-08 06:08:01,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:08:01,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594641800] [2025-03-08 06:08:01,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:08:01,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:08:01,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-08 06:08:18,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-08 06:08:18,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:08:18,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:08:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 225 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2025-03-08 06:08:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:08:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594641800] [2025-03-08 06:08:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594641800] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:08:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362946046] [2025-03-08 06:08:22,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:08:22,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:08:22,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:08:22,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:08:22,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 06:08:22,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-08 06:08:24,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-08 06:08:24,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:08:24,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:08:24,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 06:08:24,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:08:24,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 15 [2025-03-08 06:08:27,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2025-03-08 06:08:27,892 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 [2025-03-08 06:08:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7782 proven. 69 refuted. 0 times theorem prover too weak. 6429 trivial. 0 not checked. [2025-03-08 06:08:27,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 06:08:29,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-03-08 06:08:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 225 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2025-03-08 06:08:29,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362946046] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 06:08:29,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 06:08:29,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 20 [2025-03-08 06:08:29,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58375061] [2025-03-08 06:08:29,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 06:08:29,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-08 06:08:29,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:08:29,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-08 06:08:29,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2025-03-08 06:08:29,325 INFO L87 Difference]: Start difference. First operand 1131 states and 1713 transitions. Second operand has 20 states, 17 states have (on average 42.588235294117645) internal successors, (724), 20 states have internal predecessors, (724), 11 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 8 states have call predecessors, (203), 11 states have call successors, (203) [2025-03-08 06:08:37,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-08 06:08:38,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-08 06:08:44,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:08:44,885 INFO L93 Difference]: Finished difference Result 1483 states and 2224 transitions. [2025-03-08 06:08:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 06:08:44,886 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 42.588235294117645) internal successors, (724), 20 states have internal predecessors, (724), 11 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 8 states have call predecessors, (203), 11 states have call successors, (203) Word has length 722 [2025-03-08 06:08:44,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:08:44,903 INFO L225 Difference]: With dead ends: 1483 [2025-03-08 06:08:44,906 INFO L226 Difference]: Without dead ends: 1368 [2025-03-08 06:08:44,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1462 GetRequests, 1434 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2025-03-08 06:08:44,910 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 5583 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 8224 mSolverCounterSat, 4663 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5885 SdHoareTripleChecker+Valid, 3827 SdHoareTripleChecker+Invalid, 12888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4663 IncrementalHoareTripleChecker+Valid, 8224 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2025-03-08 06:08:44,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5885 Valid, 3827 Invalid, 12888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4663 Valid, 8224 Invalid, 1 Unknown, 0 Unchecked, 14.9s Time] [2025-03-08 06:08:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2025-03-08 06:08:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1337. [2025-03-08 06:08:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 855 states have (on average 1.2713450292397661) internal successors, (1087), 889 states have internal predecessors, (1087), 449 states have call successors, (449), 29 states have call predecessors, (449), 32 states have return successors, (491), 448 states have call predecessors, (491), 449 states have call successors, (491) [2025-03-08 06:08:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2027 transitions. [2025-03-08 06:08:45,254 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2027 transitions. Word has length 722 [2025-03-08 06:08:45,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:08:45,256 INFO L471 AbstractCegarLoop]: Abstraction has 1337 states and 2027 transitions. [2025-03-08 06:08:45,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 42.588235294117645) internal successors, (724), 20 states have internal predecessors, (724), 11 states have call successors, (203), 5 states have call predecessors, (203), 8 states have return successors, (203), 8 states have call predecessors, (203), 11 states have call successors, (203) [2025-03-08 06:08:45,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2027 transitions. [2025-03-08 06:08:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2025-03-08 06:08:45,333 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:08:45,334 INFO L218 NwaCegarLoop]: trace histogram [88, 88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:08:45,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 06:08:45,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 06:08:45,536 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:08:45,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:08:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1002938807, now seen corresponding path program 1 times [2025-03-08 06:08:45,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:08:45,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353905475] [2025-03-08 06:08:45,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:08:45,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:08:45,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 765 statements into 1 equivalence classes. [2025-03-08 06:08:46,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 765 of 765 statements. [2025-03-08 06:08:46,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:08:46,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:08:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15312 trivial. 0 not checked. [2025-03-08 06:08:46,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:08:46,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353905475] [2025-03-08 06:08:46,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353905475] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:08:46,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:08:46,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:08:46,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911532305] [2025-03-08 06:08:46,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:08:46,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:08:46,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:08:46,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:08:46,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:08:46,995 INFO L87 Difference]: Start difference. First operand 1337 states and 2027 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 2 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2025-03-08 06:08:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:08:47,163 INFO L93 Difference]: Finished difference Result 1854 states and 2843 transitions. [2025-03-08 06:08:47,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:08:47,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 2 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) Word has length 765 [2025-03-08 06:08:47,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:08:47,195 INFO L225 Difference]: With dead ends: 1854 [2025-03-08 06:08:47,199 INFO L226 Difference]: Without dead ends: 1337 [2025-03-08 06:08:47,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:08:47,212 INFO L435 NwaCegarLoop]: 1710 mSDtfsCounter, 0 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:08:47,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3410 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:08:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2025-03-08 06:08:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2025-03-08 06:08:47,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 855 states have (on average 1.2690058479532165) internal successors, (1085), 889 states have internal predecessors, (1085), 449 states have call successors, (449), 29 states have call predecessors, (449), 32 states have return successors, (491), 448 states have call predecessors, (491), 449 states have call successors, (491) [2025-03-08 06:08:47,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2025 transitions. [2025-03-08 06:08:47,578 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2025 transitions. Word has length 765 [2025-03-08 06:08:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:08:47,583 INFO L471 AbstractCegarLoop]: Abstraction has 1337 states and 2025 transitions. [2025-03-08 06:08:47,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 2 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2025-03-08 06:08:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2025 transitions. [2025-03-08 06:08:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2025-03-08 06:08:47,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:08:47,624 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:08:47,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:08:47,624 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:08:47,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:08:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1602489886, now seen corresponding path program 1 times [2025-03-08 06:08:47,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:08:47,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331350891] [2025-03-08 06:08:47,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:08:47,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:08:48,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 760 statements into 1 equivalence classes. [2025-03-08 06:08:48,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 760 of 760 statements. [2025-03-08 06:08:48,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:08:48,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:08:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14623 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14623 trivial. 0 not checked. [2025-03-08 06:08:50,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:08:50,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331350891] [2025-03-08 06:08:50,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331350891] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:08:50,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:08:50,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:08:50,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691586260] [2025-03-08 06:08:50,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:08:50,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:08:50,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:08:50,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:08:50,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:08:50,181 INFO L87 Difference]: Start difference. First operand 1337 states and 2025 transitions. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 4 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 3 states have call predecessors, (91), 4 states have call successors, (91) [2025-03-08 06:08:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:08:53,208 INFO L93 Difference]: Finished difference Result 1860 states and 2833 transitions. [2025-03-08 06:08:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 06:08:53,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 4 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 3 states have call predecessors, (91), 4 states have call successors, (91) Word has length 760 [2025-03-08 06:08:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:08:53,233 INFO L225 Difference]: With dead ends: 1860 [2025-03-08 06:08:53,234 INFO L226 Difference]: Without dead ends: 1343 [2025-03-08 06:08:53,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:08:53,250 INFO L435 NwaCegarLoop]: 1752 mSDtfsCounter, 1711 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-08 06:08:53,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 2952 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-08 06:08:53,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2025-03-08 06:08:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1343. [2025-03-08 06:08:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 864 states have (on average 1.2662037037037037) internal successors, (1094), 895 states have internal predecessors, (1094), 440 states have call successors, (440), 32 states have call predecessors, (440), 38 states have return successors, (481), 445 states have call predecessors, (481), 440 states have call successors, (481) [2025-03-08 06:08:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 2015 transitions. [2025-03-08 06:08:53,527 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 2015 transitions. Word has length 760 [2025-03-08 06:08:53,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:08:53,531 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 2015 transitions. [2025-03-08 06:08:53,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 4 states have call successors, (91), 1 states have call predecessors, (91), 2 states have return successors, (91), 3 states have call predecessors, (91), 4 states have call successors, (91) [2025-03-08 06:08:53,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 2015 transitions. [2025-03-08 06:08:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2025-03-08 06:08:53,552 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:08:53,553 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:08:53,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:08:53,553 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:08:53,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:08:53,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1786995058, now seen corresponding path program 1 times [2025-03-08 06:08:53,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:08:53,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366564550] [2025-03-08 06:08:53,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:08:53,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:08:53,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 755 statements into 1 equivalence classes. [2025-03-08 06:08:54,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 755 of 755 statements. [2025-03-08 06:08:54,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:08:54,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:08:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 14623 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14623 trivial. 0 not checked. [2025-03-08 06:08:57,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:08:57,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366564550] [2025-03-08 06:08:57,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366564550] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:08:57,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:08:57,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:08:57,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068911402] [2025-03-08 06:08:57,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:08:57,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:08:57,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:08:57,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:08:57,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:08:57,167 INFO L87 Difference]: Start difference. First operand 1343 states and 2015 transitions. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 4 states have call successors, (90), 1 states have call predecessors, (90), 2 states have return successors, (90), 3 states have call predecessors, (90), 4 states have call successors, (90) [2025-03-08 06:08:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:08:59,596 INFO L93 Difference]: Finished difference Result 1795 states and 2729 transitions. [2025-03-08 06:08:59,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 06:08:59,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 4 states have call successors, (90), 1 states have call predecessors, (90), 2 states have return successors, (90), 3 states have call predecessors, (90), 4 states have call successors, (90) Word has length 755 [2025-03-08 06:08:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:08:59,620 INFO L225 Difference]: With dead ends: 1795 [2025-03-08 06:08:59,624 INFO L226 Difference]: Without dead ends: 1343 [2025-03-08 06:08:59,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:08:59,636 INFO L435 NwaCegarLoop]: 1750 mSDtfsCounter, 1712 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:08:59,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 2948 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-08 06:08:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2025-03-08 06:08:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1343. [2025-03-08 06:08:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 864 states have (on average 1.2650462962962963) internal successors, (1093), 895 states have internal predecessors, (1093), 440 states have call successors, (440), 32 states have call predecessors, (440), 38 states have return successors, (481), 445 states have call predecessors, (481), 440 states have call successors, (481) [2025-03-08 06:08:59,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 2014 transitions. [2025-03-08 06:08:59,901 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 2014 transitions. Word has length 755 [2025-03-08 06:08:59,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:08:59,902 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 2014 transitions. [2025-03-08 06:08:59,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 4 states have call successors, (90), 1 states have call predecessors, (90), 2 states have return successors, (90), 3 states have call predecessors, (90), 4 states have call successors, (90) [2025-03-08 06:08:59,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 2014 transitions. [2025-03-08 06:08:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2025-03-08 06:08:59,925 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:08:59,926 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:08:59,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:08:59,927 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:08:59,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:08:59,931 INFO L85 PathProgramCache]: Analyzing trace with hash -849591848, now seen corresponding path program 1 times [2025-03-08 06:08:59,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:08:59,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715597953] [2025-03-08 06:08:59,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:08:59,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:09:00,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 760 statements into 1 equivalence classes. [2025-03-08 06:09:06,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 760 of 760 statements. [2025-03-08 06:09:06,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:09:06,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:09:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14623 backedges. 27 proven. 477 refuted. 0 times theorem prover too weak. 14119 trivial. 0 not checked. [2025-03-08 06:09:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:09:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715597953] [2025-03-08 06:09:14,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715597953] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:09:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420533061] [2025-03-08 06:09:14,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:09:14,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:09:14,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:09:14,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:09:14,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 06:09:15,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 760 statements into 1 equivalence classes. [2025-03-08 06:09:16,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 760 of 760 statements. [2025-03-08 06:09:16,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:09:16,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:09:16,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 33 conjuncts are in the unsatisfiable core