./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.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/rekh_nxt.1.M4-1.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 0d0faf19803047b9d51fb440293a8075aae4a757b1a8a36a5355760a1968a70e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:10:31,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:10:31,794 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:10:31,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:10:31,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:10:31,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:10:31,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:10:31,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:10:31,817 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:10:31,817 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:10:31,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:10:31,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:10:31,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:10:31,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:10:31,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:10:31,819 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:10:31,819 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:10:31,819 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:10:31,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:10:31,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:10:31,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:10:31,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:10:31,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:10:31,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:10:31,819 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:10:31,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:10:31,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:10:31,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:10:31,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:10:31,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:10:31,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:10:31,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:10:31,820 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 -> 0d0faf19803047b9d51fb440293a8075aae4a757b1a8a36a5355760a1968a70e [2025-03-08 06:10:32,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:10:32,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:10:32,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:10:32,129 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:10:32,129 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:10:32,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2025-03-08 06:10:33,313 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a7d66a7/f68ace6b74164213a84ba6241615fd91/FLAGb7460f900 [2025-03-08 06:10:33,634 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:10:33,635 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2025-03-08 06:10:33,652 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a7d66a7/f68ace6b74164213a84ba6241615fd91/FLAGb7460f900 [2025-03-08 06:10:33,663 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a7d66a7/f68ace6b74164213a84ba6241615fd91 [2025-03-08 06:10:33,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:10:33,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:10:33,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:10:33,667 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:10:33,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:10:33,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:10:33" (1/1) ... [2025-03-08 06:10:33,671 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ade09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:33, skipping insertion in model container [2025-03-08 06:10:33,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:10:33" (1/1) ... [2025-03-08 06:10:33,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:10:33,799 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/rekh_nxt.1.M4-1.c[1510,1523] [2025-03-08 06:10:34,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:10:34,064 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:10:34,074 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.bug1.i","-S") [38] [2025-03-08 06:10:34,079 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/rekh_nxt.1.M4-1.c[1510,1523] [2025-03-08 06:10:34,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:10:34,234 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:10:34,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34 WrapperNode [2025-03-08 06:10:34,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:10:34,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:10:34,236 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:10:34,236 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:10:34,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,450 INFO L138 Inliner]: procedures = 55, calls = 2262, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4902 [2025-03-08 06:10:34,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:10:34,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:10:34,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:10:34,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:10:34,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,553 INFO L175 MemorySlicer]: Split 1600 memory accesses to 15 slices as follows [2, 8, 277, 285, 113, 113, 187, 203, 186, 203, 4, 8, 7, 2, 2]. 18 percent of accesses are in the largest equivalence class. The 220 initializations are split as follows [2, 0, 27, 27, 27, 27, 27, 27, 27, 27, 0, 0, 2, 0, 0]. The 235 writes are split as follows [0, 4, 27, 27, 27, 27, 31, 26, 31, 26, 0, 4, 3, 1, 1]. [2025-03-08 06:10:34,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,619 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:10:34,684 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:10:34,684 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:10:34,685 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:10:34,685 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (1/1) ... [2025-03-08 06:10:34,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:10:34,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:10:34,710 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 06:10:34,713 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 06:10:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:10:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2025-03-08 06:10:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2025-03-08 06:10:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2025-03-08 06:10:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2025-03-08 06:10:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 06:10:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2025-03-08 06:10:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2025-03-08 06:10:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2025-03-08 06:10:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2025-03-08 06:10:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2025-03-08 06:10:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2025-03-08 06:10:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 06:10:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 06:10:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 06:10:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 06:10:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 06:10:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 06:10:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 06:10:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-08 06:10:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-08 06:10:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-08 06:10:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-08 06:10:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-08 06:10:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-08 06:10:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-08 06:10:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-08 06:10:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2025-03-08 06:10:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2025-03-08 06:10:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2025-03-08 06:10:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2025-03-08 06:10:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-08 06:10:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-08 06:10:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-08 06:10:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-08 06:10:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 06:10:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2025-03-08 06:10:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-08 06:10:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-08 06:10:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2025-03-08 06:10:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 06:10:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:10:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2025-03-08 06:10:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2025-03-08 06:10:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2025-03-08 06:10:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2025-03-08 06:10:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2025-03-08 06:10:35,111 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:10:35,113 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:10:35,733 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L78: 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 06:10:35,734 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L204: 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 06:10:41,319 INFO L? ?]: Removed 346 outVars from TransFormulas that were not future-live. [2025-03-08 06:10:41,319 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:10:41,354 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:10:41,359 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:10:41,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:10:41 BoogieIcfgContainer [2025-03-08 06:10:41,359 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:10:41,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:10:41,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:10:41,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:10:41,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:10:33" (1/3) ... [2025-03-08 06:10:41,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a25e88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:10:41, skipping insertion in model container [2025-03-08 06:10:41,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:10:34" (2/3) ... [2025-03-08 06:10:41,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a25e88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:10:41, skipping insertion in model container [2025-03-08 06:10:41,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:10:41" (3/3) ... [2025-03-08 06:10:41,367 INFO L128 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-1.c [2025-03-08 06:10:41,376 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:10:41,379 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekh_nxt.1.M4-1.c that has 17 procedures, 1478 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 06:10:41,454 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:10:41,464 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;@7e9a1223, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:10:41,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 06:10:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 1478 states, 847 states have (on average 1.2609208972845336) internal successors, (1068), 976 states have internal predecessors, (1068), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 514 states have call predecessors, (613), 613 states have call successors, (613) [2025-03-08 06:10:42,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8471 [2025-03-08 06:10:42,008 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:10:42,011 INFO L218 NwaCegarLoop]: trace histogram [964, 964, 964, 108, 108, 108, 108, 108, 108, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:10:42,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:10:42,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:10:42,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1457908826, now seen corresponding path program 1 times [2025-03-08 06:10:42,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:10:42,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573175844] [2025-03-08 06:10:42,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:10:42,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:10:43,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8470 statements into 1 equivalence classes. [2025-03-08 06:10:44,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8470 of 8470 statements. [2025-03-08 06:10:44,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:10:44,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:10:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1951692 backedges. 0 proven. 1132 refuted. 0 times theorem prover too weak. 1950560 trivial. 0 not checked. [2025-03-08 06:10:52,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:10:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573175844] [2025-03-08 06:10:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573175844] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:10:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436723963] [2025-03-08 06:10:52,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:10:52,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:10:52,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:10:52,990 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 06:10:52,991 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 06:10:55,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8470 statements into 1 equivalence classes. [2025-03-08 06:10:58,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8470 of 8470 statements. [2025-03-08 06:10:58,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:10:58,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:10:58,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 28073 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:10:58,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:10:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1951692 backedges. 631726 proven. 0 refuted. 0 times theorem prover too weak. 1319966 trivial. 0 not checked. [2025-03-08 06:10:59,277 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:10:59,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436723963] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:10:59,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:10:59,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2025-03-08 06:10:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529803805] [2025-03-08 06:10:59,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:10:59,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:10:59,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:10:59,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:10:59,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:10:59,313 INFO L87 Difference]: Start difference. First operand has 1478 states, 847 states have (on average 1.2609208972845336) internal successors, (1068), 976 states have internal predecessors, (1068), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 514 states have call predecessors, (613), 613 states have call successors, (613) Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 2 states have call successors, (486), 2 states have call predecessors, (486), 2 states have return successors, (486), 2 states have call predecessors, (486), 2 states have call successors, (486) [2025-03-08 06:10:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:10:59,507 INFO L93 Difference]: Finished difference Result 2951 states and 5179 transitions. [2025-03-08 06:10:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:10:59,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 2 states have call successors, (486), 2 states have call predecessors, (486), 2 states have return successors, (486), 2 states have call predecessors, (486), 2 states have call successors, (486) Word has length 8470 [2025-03-08 06:10:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:10:59,540 INFO L225 Difference]: With dead ends: 2951 [2025-03-08 06:10:59,540 INFO L226 Difference]: Without dead ends: 1473 [2025-03-08 06:10:59,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8472 GetRequests, 8471 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 06:10:59,564 INFO L435 NwaCegarLoop]: 2290 mSDtfsCounter, 0 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4570 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 06:10:59,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4570 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:10:59,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2025-03-08 06:10:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1473. [2025-03-08 06:10:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 843 states have (on average 1.2574139976275207) internal successors, (1060), 971 states have internal predecessors, (1060), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 514 states have call predecessors, (613), 613 states have call successors, (613) [2025-03-08 06:10:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2286 transitions. [2025-03-08 06:10:59,928 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 2286 transitions. Word has length 8470 [2025-03-08 06:10:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:10:59,934 INFO L471 AbstractCegarLoop]: Abstraction has 1473 states and 2286 transitions. [2025-03-08 06:10:59,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 2 states have call successors, (486), 2 states have call predecessors, (486), 2 states have return successors, (486), 2 states have call predecessors, (486), 2 states have call successors, (486) [2025-03-08 06:10:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 2286 transitions. [2025-03-08 06:11:00,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9239 [2025-03-08 06:11:00,487 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:11:00,489 INFO L218 NwaCegarLoop]: trace histogram [964, 964, 964, 192, 192, 108, 108, 108, 108, 108, 108, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:11:00,546 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 06:11:00,690 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 06:11:00,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:11:00,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:11:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1820936026, now seen corresponding path program 1 times [2025-03-08 06:11:00,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:11:00,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623466599] [2025-03-08 06:11:00,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:11:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:11:01,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9238 statements into 1 equivalence classes. [2025-03-08 06:11:03,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9238 of 9238 statements. [2025-03-08 06:11:03,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:11:03,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:11:33,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2015820 backedges. 0 proven. 2133 refuted. 0 times theorem prover too weak. 2013687 trivial. 0 not checked. [2025-03-08 06:11:33,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:11:33,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623466599] [2025-03-08 06:11:33,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623466599] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:11:33,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864385140] [2025-03-08 06:11:33,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:11:33,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:11:33,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:11:33,713 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 06:11:33,714 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 06:11:36,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9238 statements into 1 equivalence classes. [2025-03-08 06:11:39,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9238 of 9238 statements. [2025-03-08 06:11:39,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:11:39,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:11:39,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 31145 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-03-08 06:11:39,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:11:40,237 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 [2025-03-08 06:11:40,440 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 [2025-03-08 06:11:43,766 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 06:11:43,770 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 06:11:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2015820 backedges. 432822 proven. 830 refuted. 0 times theorem prover too weak. 1582168 trivial. 0 not checked. [2025-03-08 06:11:44,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 06:11:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2015820 backedges. 10648 proven. 1146 refuted. 0 times theorem prover too weak. 2004026 trivial. 0 not checked. [2025-03-08 06:11:53,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864385140] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 06:11:53,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 06:11:53,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 18] total 36 [2025-03-08 06:11:53,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047283066] [2025-03-08 06:11:53,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 06:11:53,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-08 06:11:53,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:11:53,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-08 06:11:53,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 06:11:53,777 INFO L87 Difference]: Start difference. First operand 1473 states and 2286 transitions. Second operand has 36 states, 31 states have (on average 30.806451612903224) internal successors, (955), 33 states have internal predecessors, (955), 14 states have call successors, (578), 8 states have call predecessors, (578), 13 states have return successors, (580), 12 states have call predecessors, (580), 14 states have call successors, (580) [2025-03-08 06:11:55,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []