./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:49:24,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:49:24,809 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:49:24,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:49:24,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:49:24,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:49:24,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:49:24,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:49:24,829 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:49:24,829 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:49:24,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:49:24,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:49:24,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:49:24,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:49:24,831 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:49:24,831 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:49:24,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:49:24,832 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:49:24,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:49:24,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:49:24,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:49:24,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:49:24,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:49:24,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:49:24,839 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:49:24,840 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:49:24,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:49:24,840 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:49:24,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:49:24,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:49:24,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:49:24,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:49:24,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:49:24,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:49:24,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:49:24,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:49:24,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:49:24,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:49:24,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:49:24,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:49:24,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:49:24,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:49:24,843 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2024-11-18 14:49:25,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:49:25,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:49:25,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:49:25,056 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:49:25,057 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:49:25,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2024-11-18 14:49:26,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:49:26,508 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:49:26,509 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2024-11-18 14:49:26,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc4947e1/75b21bf1f82b4728b274db28e5612f2b/FLAG714bc534f [2024-11-18 14:49:26,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc4947e1/75b21bf1f82b4728b274db28e5612f2b [2024-11-18 14:49:26,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:49:26,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:49:26,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:49:26,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:49:26,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:49:26,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:49:26" (1/1) ... [2024-11-18 14:49:26,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e08399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:26, skipping insertion in model container [2024-11-18 14:49:26,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:49:26" (1/1) ... [2024-11-18 14:49:26,596 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:49:26,756 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2024-11-18 14:49:27,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:49:27,035 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:49:27,042 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2024-11-18 14:49:27,049 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2024-11-18 14:49:27,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:49:27,197 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:49:27,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27 WrapperNode [2024-11-18 14:49:27,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:49:27,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:49:27,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:49:27,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:49:27,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,361 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3995 [2024-11-18 14:49:27,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:49:27,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:49:27,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:49:27,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:49:27,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,434 INFO L175 MemorySlicer]: Split 1382 memory accesses to 17 slices as follows [2, 264, 2, 305, 156, 113, 79, 57, 83, 105, 4, 82, 105, 7, 8, 8, 2]. 22 percent of accesses are in the largest equivalence class. The 166 initializations are split as follows [2, 24, 0, 24, 2, 2, 1, 1, 27, 27, 0, 27, 27, 2, 0, 0, 0]. The 175 writes are split as follows [0, 24, 1, 24, 2, 2, 1, 1, 28, 26, 0, 28, 26, 3, 4, 4, 1]. [2024-11-18 14:49:27,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,493 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:49:27,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:49:27,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:49:27,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:49:27,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (1/1) ... [2024-11-18 14:49:27,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:49:27,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:49:27,721 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) [2024-11-18 14:49:27,724 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 [2024-11-18 14:49:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:49:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-11-18 14:49:27,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-11-18 14:49:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-11-18 14:49:27,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-11-18 14:49:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 14:49:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-11-18 14:49:27,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-11-18 14:49:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-11-18 14:49:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-11-18 14:49:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-11-18 14:49:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-11-18 14:49:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 14:49:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 14:49:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 14:49:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 14:49:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-18 14:49:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-18 14:49:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-18 14:49:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-11-18 14:49:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-11-18 14:49:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-11-18 14:49:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-11-18 14:49:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-18 14:49:27,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-18 14:49:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-18 14:49:27,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-18 14:49:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 14:49:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-18 14:49:27,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 14:49:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-11-18 14:49:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 14:49:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:49:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:49:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-11-18 14:49:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-11-18 14:49:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-11-18 14:49:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-11-18 14:49:27,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-11-18 14:49:28,082 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:49:28,084 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:49:34,140 INFO L? ?]: Removed 193 outVars from TransFormulas that were not future-live. [2024-11-18 14:49:34,140 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:49:34,177 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:49:34,178 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:49:34,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:49:34 BoogieIcfgContainer [2024-11-18 14:49:34,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:49:34,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:49:34,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:49:34,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:49:34,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:49:26" (1/3) ... [2024-11-18 14:49:34,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b05adb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:49:34, skipping insertion in model container [2024-11-18 14:49:34,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:27" (2/3) ... [2024-11-18 14:49:34,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b05adb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:49:34, skipping insertion in model container [2024-11-18 14:49:34,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:49:34" (3/3) ... [2024-11-18 14:49:34,186 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2024-11-18 14:49:34,200 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:49:34,201 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:49:34,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:49:34,296 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;@329158c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:49:34,296 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:49:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 1138 states, 729 states have (on average 1.289437585733882) internal successors, (940), 761 states have internal predecessors, (940), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-18 14:49:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-11-18 14:49:34,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:49:34,350 INFO L215 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:49:34,352 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:49:34,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:49:34,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1494844215, now seen corresponding path program 1 times [2024-11-18 14:49:34,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:49:34,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072054247] [2024-11-18 14:49:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:49:34,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:49:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:49:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-18 14:49:35,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:49:35,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072054247] [2024-11-18 14:49:35,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072054247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:49:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157367013] [2024-11-18 14:49:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:49:35,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:49:35,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:49:35,119 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) [2024-11-18 14:49:35,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:49:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:49:36,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:49:36,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:49:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-18 14:49:36,097 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:49:36,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157367013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:49:36,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:49:36,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 14:49:36,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612474150] [2024-11-18 14:49:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:49:36,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:49:36,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:49:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:49:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:49:36,135 INFO L87 Difference]: Start difference. First operand has 1138 states, 729 states have (on average 1.289437585733882) internal successors, (940), 761 states have internal predecessors, (940), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) Second operand has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2024-11-18 14:49:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:49:36,242 INFO L93 Difference]: Finished difference Result 2271 states and 3818 transitions. [2024-11-18 14:49:36,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:49:36,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) Word has length 722 [2024-11-18 14:49:36,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:49:36,270 INFO L225 Difference]: With dead ends: 2271 [2024-11-18 14:49:36,270 INFO L226 Difference]: Without dead ends: 1132 [2024-11-18 14:49:36,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:49:36,286 INFO L432 NwaCegarLoop]: 1721 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, 1721 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 [2024-11-18 14:49:36,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:49:36,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2024-11-18 14:49:36,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1132. [2024-11-18 14:49:36,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 724 states have (on average 1.2845303867403315) internal successors, (930), 755 states have internal predecessors, (930), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-18 14:49:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1714 transitions. [2024-11-18 14:49:36,444 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1714 transitions. Word has length 722 [2024-11-18 14:49:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:49:36,446 INFO L471 AbstractCegarLoop]: Abstraction has 1132 states and 1714 transitions. [2024-11-18 14:49:36,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2024-11-18 14:49:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1714 transitions. [2024-11-18 14:49:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-11-18 14:49:36,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:49:36,464 INFO L215 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:49:36,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:49:36,669 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 [2024-11-18 14:49:36,669 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:49:36,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:49:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash 504305693, now seen corresponding path program 1 times [2024-11-18 14:49:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:49:36,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916090833] [2024-11-18 14:49:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:49:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:49:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:49:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 48 proven. 924 refuted. 0 times theorem prover too weak. 13308 trivial. 0 not checked. [2024-11-18 14:49:52,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:49:52,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916090833] [2024-11-18 14:49:52,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916090833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:49:52,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342536515] [2024-11-18 14:49:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:49:52,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:49:52,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:49:52,458 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) [2024-11-18 14:49:52,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:49:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:49:56,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-18 14:49:56,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:49:56,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 14:49:56,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 14:49:56,462 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 15 treesize of output 1 [2024-11-18 14:49:56,478 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 15 treesize of output 1 [2024-11-18 14:49:56,826 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 17 treesize of output 9 [2024-11-18 14:50:01,478 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 17 treesize of output 9 [2024-11-18 14:50:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7050 proven. 180 refuted. 0 times theorem prover too weak. 7050 trivial. 0 not checked. [2024-11-18 14:50:01,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:50:03,583 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 9 proven. 492 refuted. 0 times theorem prover too weak. 13779 trivial. 0 not checked. [2024-11-18 14:50:03,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342536515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:50:03,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:50:03,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 13] total 43 [2024-11-18 14:50:03,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830481542] [2024-11-18 14:50:03,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:50:03,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 14:50:03,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:50:03,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 14:50:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1577, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 14:50:03,590 INFO L87 Difference]: Start difference. First operand 1132 states and 1714 transitions. Second operand has 43 states, 33 states have (on average 24.303030303030305) internal successors, (802), 38 states have internal predecessors, (802), 19 states have call successors, (255), 4 states have call predecessors, (255), 8 states have return successors, (255), 15 states have call predecessors, (255), 19 states have call successors, (255) [2024-11-18 14:50:11,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:13,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:15,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:18,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:21,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:24,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:28,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:31,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:34,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:37,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:40,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:43,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 14:50:46,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []