./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 798a7b37 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-?-798a7b3-m [2025-03-03 14:59:38,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:59:38,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:59:38,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:59:38,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:59:38,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:59:38,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:59:38,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:59:38,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:59:38,838 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:59:38,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:59:38,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:59:38,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:59:38,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:59:38,839 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:59:38,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:59:38,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:59:38,840 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:59:38,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:59:38,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:59:38,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:59:38,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:59:38,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:59:38,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:59:38,840 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:59:38,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:59:38,841 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:59:38,841 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:59:38,841 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:59:38,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:59:38,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:59:38,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:59:38,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:59:38,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:59:38,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:59:38,842 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:59:38,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:59:38,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:59:38,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:59:38,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:59:38,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:59:38,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:59:38,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:59:38,842 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 [2025-03-03 14:59:39,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:59:39,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:59:39,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:59:39,069 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:59:39,069 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:59:39,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2025-03-03 14:59:40,243 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a8dc39b/288c89d83c864f49a1f699f1b50004b7/FLAG9a906e65d [2025-03-03 14:59:40,600 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:59:40,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2025-03-03 14:59:40,620 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a8dc39b/288c89d83c864f49a1f699f1b50004b7/FLAG9a906e65d [2025-03-03 14:59:40,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a8dc39b/288c89d83c864f49a1f699f1b50004b7 [2025-03-03 14:59:40,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:59:40,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:59:40,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:59:40,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:59:40,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:59:40,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:59:40" (1/1) ... [2025-03-03 14:59:40,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25747e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:40, skipping insertion in model container [2025-03-03 14:59:40,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:59:40" (1/1) ... [2025-03-03 14:59:40,850 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:59:40,950 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] [2025-03-03 14:59:41,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:59:41,163 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:59:41,169 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.bug1.i","-S") [38] [2025-03-03 14:59:41,174 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] [2025-03-03 14:59:41,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:59:41,322 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:59:41,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41 WrapperNode [2025-03-03 14:59:41,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:59:41,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:59:41,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:59:41,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:59:41,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,494 INFO L138 Inliner]: procedures = 55, calls = 2262, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4902 [2025-03-03 14:59:41,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:59:41,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:59:41,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:59:41,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:59:41,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,524 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,575 INFO L175 MemorySlicer]: Split 1600 memory accesses to 15 slices as follows [2, 8, 277, 285, 113, 113, 187, 203, 2, 186, 203, 2, 8, 7, 4]. 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, 0, 27, 27, 0, 0, 2, 0]. The 235 writes are split as follows [0, 4, 27, 27, 27, 27, 31, 26, 1, 31, 26, 1, 4, 3, 0]. [2025-03-03 14:59:41,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,693 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:59:41,751 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:59:41,752 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:59:41,752 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:59:41,753 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (1/1) ... [2025-03-03 14:59:41,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:59:41,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:59:41,777 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) [2025-03-03 14:59:41,782 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 [2025-03-03 14:59:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:59:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2025-03-03 14:59:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2025-03-03 14:59:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2025-03-03 14:59:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2025-03-03 14:59:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 14:59:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2025-03-03 14:59:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2025-03-03 14:59:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2025-03-03 14:59:41,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2025-03-03 14:59:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2025-03-03 14:59:41,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2025-03-03 14:59:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 14:59:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 14:59:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-03 14:59:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-03 14:59:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-03 14:59:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-03 14:59:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-03 14:59:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-03 14:59:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-03 14:59:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-03 14:59:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-03 14:59:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-03 14:59:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-03 14:59:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-03 14:59:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-03 14:59:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2025-03-03 14:59:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2025-03-03 14:59:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-03 14:59:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-03 14:59:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2025-03-03 14:59:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-03 14:59:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2025-03-03 14:59:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 14:59:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:59:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:59:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2025-03-03 14:59:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2025-03-03 14:59:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2025-03-03 14:59:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2025-03-03 14:59:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2025-03-03 14:59:42,144 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:59:42,146 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:59:42,778 INFO L1325 $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; [2025-03-03 14:59:42,778 INFO L1325 $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; [2025-03-03 14:59:48,190 INFO L? ?]: Removed 346 outVars from TransFormulas that were not future-live. [2025-03-03 14:59:48,190 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:59:48,230 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:59:48,233 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:59:48,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:59:48 BoogieIcfgContainer [2025-03-03 14:59:48,234 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:59:48,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:59:48,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:59:48,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:59:48,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:59:40" (1/3) ... [2025-03-03 14:59:48,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b25462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:59:48, skipping insertion in model container [2025-03-03 14:59:48,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:59:41" (2/3) ... [2025-03-03 14:59:48,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b25462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:59:48, skipping insertion in model container [2025-03-03 14:59:48,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:59:48" (3/3) ... [2025-03-03 14:59:48,242 INFO L128 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-1.c [2025-03-03 14:59:48,252 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:59:48,255 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. [2025-03-03 14:59:48,327 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:59:48,337 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;@136b860c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:59:48,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:59:48,346 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) [2025-03-03 14:59:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8471 [2025-03-03 14:59:48,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:59:48,760 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] [2025-03-03 14:59:48,760 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:59:48,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:59:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1457908826, now seen corresponding path program 1 times [2025-03-03 14:59:48,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:59:48,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388455727] [2025-03-03 14:59:48,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:59:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:59:50,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8470 statements into 1 equivalence classes. [2025-03-03 14:59:50,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8470 of 8470 statements. [2025-03-03 14:59:50,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:59:50,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:59:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1951692 backedges. 0 proven. 1132 refuted. 0 times theorem prover too weak. 1950560 trivial. 0 not checked. [2025-03-03 14:59:59,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:59:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388455727] [2025-03-03 14:59:59,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388455727] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:59:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041562108] [2025-03-03 14:59:59,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:59:59,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:59:59,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:59:59,234 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) [2025-03-03 14:59:59,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 15:00:01,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8470 statements into 1 equivalence classes. [2025-03-03 15:00:04,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8470 of 8470 statements. [2025-03-03 15:00:04,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:00:04,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:00:04,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 28073 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:00:04,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:00:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1951692 backedges. 631726 proven. 0 refuted. 0 times theorem prover too weak. 1319966 trivial. 0 not checked. [2025-03-03 15:00:04,958 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:00:04,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041562108] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:00:04,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:00:04,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2025-03-03 15:00:04,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495375440] [2025-03-03 15:00:04,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:00:04,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:00:04,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:00:04,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:00:04,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:00:05,003 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) [2025-03-03 15:00:05,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:00:05,228 INFO L93 Difference]: Finished difference Result 2951 states and 5179 transitions. [2025-03-03 15:00:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:00:05,231 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 [2025-03-03 15:00:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:00:05,272 INFO L225 Difference]: With dead ends: 2951 [2025-03-03 15:00:05,275 INFO L226 Difference]: Without dead ends: 1473 [2025-03-03 15:00:05,303 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 [2025-03-03 15:00:05,306 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 [2025-03-03 15:00:05,307 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] [2025-03-03 15:00:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2025-03-03 15:00:05,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1473. [2025-03-03 15:00:05,661 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) [2025-03-03 15:00:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2286 transitions. [2025-03-03 15:00:05,686 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 2286 transitions. Word has length 8470 [2025-03-03 15:00:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:00:05,694 INFO L471 AbstractCegarLoop]: Abstraction has 1473 states and 2286 transitions. [2025-03-03 15:00:05,695 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) [2025-03-03 15:00:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 2286 transitions. [2025-03-03 15:00:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9239 [2025-03-03 15:00:06,274 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:00:06,276 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] [2025-03-03 15:00:06,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 15:00:06,477 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 [2025-03-03 15:00:06,477 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:00:06,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:00:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1820936026, now seen corresponding path program 1 times [2025-03-03 15:00:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:00:06,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160776056] [2025-03-03 15:00:06,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:00:06,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:00:07,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9238 statements into 1 equivalence classes. [2025-03-03 15:00:10,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9238 of 9238 statements. [2025-03-03 15:00:10,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:00:10,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:00:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2015820 backedges. 0 proven. 2133 refuted. 0 times theorem prover too weak. 2013687 trivial. 0 not checked. [2025-03-03 15:00:42,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:00:42,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160776056] [2025-03-03 15:00:42,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160776056] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:00:42,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890169662] [2025-03-03 15:00:42,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:00:42,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:00:42,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:00:42,791 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) [2025-03-03 15:00:42,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 15:00:45,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9238 statements into 1 equivalence classes. [2025-03-03 15:00:48,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9238 of 9238 statements. [2025-03-03 15:00:48,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:00:48,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:00:48,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 31145 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-03-03 15:00:48,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:00:48,968 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 [2025-03-03 15:00:49,062 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 [2025-03-03 15:00:52,044 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 [2025-03-03 15:00:52,048 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 [2025-03-03 15:00:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2015820 backedges. 432822 proven. 830 refuted. 0 times theorem prover too weak. 1582168 trivial. 0 not checked. [2025-03-03 15:00:52,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 15:01:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2015820 backedges. 10648 proven. 1146 refuted. 0 times theorem prover too weak. 2004026 trivial. 0 not checked. [2025-03-03 15:01:02,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890169662] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 15:01:02,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 15:01:02,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 18] total 36 [2025-03-03 15:01:02,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481649252] [2025-03-03 15:01:02,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 15:01:02,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-03 15:01:02,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:01:02,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-03 15:01:02,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2025-03-03 15:01:02,101 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)