./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.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/rekcba_nxt.2.M4-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:57:17,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:57:17,223 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:57:17,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:57:17,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:57:17,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:57:17,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:57:17,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:57:17,249 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:57:17,249 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:57:17,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:57:17,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:57:17,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:57:17,250 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:57:17,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:57:17,251 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:57:17,251 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:57:17,251 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:57:17,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:57:17,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:57:17,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:57:17,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:57:17,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:57:17,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:57:17,251 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:57:17,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:57:17,252 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:57:17,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:57:17,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:57:17,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:57:17,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:57:17,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:57:17,252 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 -> 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec [2025-03-03 14:57:17,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:57:17,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:57:17,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:57:17,481 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:57:17,482 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:57:17,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2025-03-03 14:57:18,635 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd0a1eb71/85ffe4664f0e4953bb8018d1550c4936/FLAG22b5a0a6c [2025-03-03 14:57:19,113 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:57:19,114 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2025-03-03 14:57:19,146 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd0a1eb71/85ffe4664f0e4953bb8018d1550c4936/FLAG22b5a0a6c [2025-03-03 14:57:19,207 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd0a1eb71/85ffe4664f0e4953bb8018d1550c4936 [2025-03-03 14:57:19,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:57:19,210 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:57:19,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:57:19,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:57:19,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:57:19,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:57:19" (1/1) ... [2025-03-03 14:57:19,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cd8bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:19, skipping insertion in model container [2025-03-03 14:57:19,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:57:19" (1/1) ... [2025-03-03 14:57:19,311 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:57:19,486 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c[2278,2291] [2025-03-03 14:57:20,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:57:20,282 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:57:20,287 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.bug2.i","-S") [51] [2025-03-03 14:57:20,292 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c[2278,2291] [2025-03-03 14:57:20,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:57:21,023 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:57:21,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21 WrapperNode [2025-03-03 14:57:21,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:57:21,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:57:21,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:57:21,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:57:21,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:21,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:22,428 INFO L138 Inliner]: procedures = 63, calls = 19692, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 42452 [2025-03-03 14:57:22,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:57:22,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:57:22,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:57:22,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:57:22,439 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:22,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:22,742 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:22,943 INFO L175 MemorySlicer]: Split 15291 memory accesses to 22 slices as follows [2, 194, 17, 9, 4, 2784, 3812, 2400, 1676, 1252, 852, 325, 8, 429, 325, 429, 325, 429, 7, 2, 8, 2]. 25 percent of accesses are in the largest equivalence class. The 880 initializations are split as follows [2, 0, 8, 4, 0, 96, 96, 8, 8, 4, 4, 108, 0, 108, 108, 108, 108, 108, 2, 0, 0, 0]. The 977 writes are split as follows [0, 98, 1, 1, 0, 96, 96, 8, 8, 4, 4, 109, 4, 107, 109, 107, 109, 107, 3, 1, 4, 1]. [2025-03-03 14:57:22,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:22,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:23,615 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:23,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:23,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:23,809 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:23,963 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:57:23,964 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:57:23,964 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:57:23,964 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:57:23,964 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (1/1) ... [2025-03-03 14:57:23,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:57:23,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:57:23,986 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 14:57:23,988 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 14:57:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:57:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2025-03-03 14:57:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2025-03-03 14:57:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2025-03-03 14:57:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2025-03-03 14:57:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2025-03-03 14:57:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#15 [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#16 [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#17 [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#18 [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#19 [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#20 [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#21 [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2025-03-03 14:57:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2025-03-03 14:57:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2025-03-03 14:57:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2025-03-03 14:57:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2025-03-03 14:57:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#19 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#20 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#21 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2025-03-03 14:57:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2025-03-03 14:57:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-03 14:57:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-03 14:57:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 14:57:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-03 14:57:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#19 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#20 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#21 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2025-03-03 14:57:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2025-03-03 14:57:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2025-03-03 14:57:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 14:57:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:57:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:57:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:57:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:57:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:57:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#20 [2025-03-03 14:57:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#21 [2025-03-03 14:57:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:57:24,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:57:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2025-03-03 14:57:24,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2025-03-03 14:57:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2025-03-03 14:57:24,009 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2025-03-03 14:57:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2025-03-03 14:57:24,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2025-03-03 14:57:25,337 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:57:25,339 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:57:25,635 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L225: 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 14:57:25,635 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L93: 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 14:57:49,084 INFO L? ?]: Removed 303 outVars from TransFormulas that were not future-live. [2025-03-03 14:57:49,084 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:57:49,327 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:57:49,327 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:57:49,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:57:49 BoogieIcfgContainer [2025-03-03 14:57:49,328 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:57:49,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:57:49,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:57:49,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:57:49,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:57:19" (1/3) ... [2025-03-03 14:57:49,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101366ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:57:49, skipping insertion in model container [2025-03-03 14:57:49,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:21" (2/3) ... [2025-03-03 14:57:49,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101366ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:57:49, skipping insertion in model container [2025-03-03 14:57:49,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:57:49" (3/3) ... [2025-03-03 14:57:49,335 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-2.c [2025-03-03 14:57:49,349 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:57:49,352 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.2.M4-2.c that has 19 procedures, 12488 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:57:49,578 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:57:49,585 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;@3574481b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:57:49,586 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:57:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 12488 states, 8125 states have (on average 1.3113846153846154) internal successors, (10655), 8238 states have internal predecessors, (10655), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) [2025-03-03 14:57:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5259 [2025-03-03 14:57:49,963 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:57:49,966 INFO L218 NwaCegarLoop]: trace histogram [444, 444, 444, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:57:49,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:57:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash 297040045, now seen corresponding path program 1 times [2025-03-03 14:57:49,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:57:49,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231248482] [2025-03-03 14:57:49,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:57:49,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:58:08,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5258 statements into 1 equivalence classes. [2025-03-03 14:58:08,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5258 of 5258 statements. [2025-03-03 14:58:08,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:58:08,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:58:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 393384 backedges. 0 proven. 886 refuted. 0 times theorem prover too weak. 392498 trivial. 0 not checked. [2025-03-03 14:58:12,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:58:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231248482] [2025-03-03 14:58:12,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231248482] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:58:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411034773] [2025-03-03 14:58:12,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:58:12,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:58:12,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:58:12,708 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 14:58:12,709 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 14:58:31,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5258 statements into 1 equivalence classes. [2025-03-03 14:58:33,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5258 of 5258 statements. [2025-03-03 14:58:33,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:58:33,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:58:33,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 16602 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 14:58:33,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:58:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 393384 backedges. 886 proven. 0 refuted. 0 times theorem prover too weak. 392498 trivial. 0 not checked. [2025-03-03 14:58:33,881 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:58:33,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411034773] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:58:33,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:58:33,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 14:58:33,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070403656] [2025-03-03 14:58:33,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:58:33,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 14:58:33,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:58:33,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 14:58:33,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 14:58:33,964 INFO L87 Difference]: Start difference. First operand has 12488 states, 8125 states have (on average 1.3113846153846154) internal successors, (10655), 8238 states have internal predecessors, (10655), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) Second operand has 2 states, 2 states have (on average 1521.0) internal successors, (3042), 2 states have internal predecessors, (3042), 2 states have call successors, (445), 2 states have call predecessors, (445), 1 states have return successors, (444), 1 states have call predecessors, (444), 2 states have call successors, (444) [2025-03-03 14:58:34,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:58:34,411 INFO L93 Difference]: Finished difference Result 24971 states and 43001 transitions. [2025-03-03 14:58:34,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 14:58:34,415 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1521.0) internal successors, (3042), 2 states have internal predecessors, (3042), 2 states have call successors, (445), 2 states have call predecessors, (445), 1 states have return successors, (444), 1 states have call predecessors, (444), 2 states have call successors, (444) Word has length 5258 [2025-03-03 14:58:34,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:58:34,524 INFO L225 Difference]: With dead ends: 24971 [2025-03-03 14:58:34,525 INFO L226 Difference]: Without dead ends: 12480 [2025-03-03 14:58:34,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5259 GetRequests, 5259 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 14:58:34,609 INFO L435 NwaCegarLoop]: 19339 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19339 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:58:34,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19339 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:58:34,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12480 states. [2025-03-03 14:58:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 12480. [2025-03-03 14:58:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12480 states, 8118 states have (on average 1.3112835673811283) internal successors, (10645), 8231 states have internal predecessors, (10645), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4342), 4340 states have call predecessors, (4342), 4342 states have call successors, (4342) [2025-03-03 14:58:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12480 states to 12480 states and 19330 transitions. [2025-03-03 14:58:42,510 INFO L78 Accepts]: Start accepts. Automaton has 12480 states and 19330 transitions. Word has length 5258 [2025-03-03 14:58:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:58:42,512 INFO L471 AbstractCegarLoop]: Abstraction has 12480 states and 19330 transitions. [2025-03-03 14:58:42,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1521.0) internal successors, (3042), 2 states have internal predecessors, (3042), 2 states have call successors, (445), 2 states have call predecessors, (445), 1 states have return successors, (444), 1 states have call predecessors, (444), 2 states have call successors, (444) [2025-03-03 14:58:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 12480 states and 19330 transitions. [2025-03-03 14:58:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5259 [2025-03-03 14:58:42,725 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:58:42,728 INFO L218 NwaCegarLoop]: trace histogram [444, 444, 444, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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 14:58:42,929 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 14:58:42,930 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:58:42,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:58:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash -418397357, now seen corresponding path program 1 times [2025-03-03 14:58:42,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:58:42,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747602016] [2025-03-03 14:58:42,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:58:42,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms