./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI --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 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:48:45,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:48:45,367 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:48:45,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:48:45,372 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:48:45,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:48:45,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:48:45,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:48:45,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:48:45,401 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:48:45,402 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:48:45,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:48:45,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:48:45,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:48:45,405 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:48:45,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:48:45,406 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:48:45,407 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:48:45,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:48:45,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:48:45,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:48:45,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:48:45,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:48:45,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:48:45,411 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:48:45,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:48:45,412 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:48:45,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:48:45,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:48:45,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:48:45,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:48:45,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:48:45,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:48:45,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:48:45,417 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:48:45,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:48:45,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:48:45,418 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:48:45,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:48:45,419 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:48:45,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:48:45,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:48:45,421 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 [2023-11-24 21:48:45,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:48:45,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:48:45,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:48:45,824 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:48:45,828 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:48:45,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2023-11-24 21:48:49,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:48:49,857 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:48:49,859 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2023-11-24 21:48:49,909 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/data/9c3840313/b0ee992535ad452ebcdf00e4d6fd1466/FLAGbc5331f06 [2023-11-24 21:48:49,927 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/data/9c3840313/b0ee992535ad452ebcdf00e4d6fd1466 [2023-11-24 21:48:49,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:48:49,936 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:48:49,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:49,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:48:49,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:48:49,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:49" (1/1) ... [2023-11-24 21:48:49,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b0c888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:49, skipping insertion in model container [2023-11-24 21:48:49,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:49" (1/1) ... [2023-11-24 21:48:50,263 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:48:50,576 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686] [2023-11-24 21:48:52,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:52,127 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:48:52,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2023-11-24 21:48:52,161 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686] [2023-11-24 21:48:53,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:53,413 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:48:53,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53 WrapperNode [2023-11-24 21:48:53,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:53,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:48:53,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:48:53,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:48:53,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:53,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:56,198 INFO L138 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39744 [2023-11-24 21:48:56,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:48:56,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:48:56,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:48:56,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:48:56,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:56,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:56,725 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:57,182 INFO L175 MemorySlicer]: Split 13700 memory accesses to 17 slices as follows [2, 2689, 3717, 2400, 1676, 1252, 852, 219, 322, 218, 322, 8, 4, 2, 7, 2, 8]. 27 percent of accesses are in the largest equivalence class. The 28 initializations are split as follows [2, 0, 0, 8, 8, 4, 4, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0]. The 667 writes are split as follows [0, 97, 97, 8, 8, 4, 4, 110, 108, 110, 108, 4, 0, 1, 3, 1, 4]. [2023-11-24 21:48:57,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:57,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:58,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:58,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:58,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:58,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:58,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:48:58,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:48:58,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:48:58,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:48:58,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (1/1) ... [2023-11-24 21:48:58,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:48:58,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:48:58,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:48:58,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e42a72-7927-4b87-8cbf-e660c7204eda/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:48:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:48:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-24 21:48:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-24 21:48:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-11-24 21:48:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-11-24 21:48:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:48:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-24 21:48:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-24 21:48:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-24 21:48:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-24 21:48:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-11-24 21:48:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-11-24 21:48:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:48:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:48:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:48:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:48:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 21:48:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-24 21:48:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-24 21:48:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-24 21:48:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-24 21:48:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-24 21:48:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-24 21:48:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-24 21:48:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-24 21:48:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-24 21:48:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-24 21:48:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-24 21:48:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2023-11-24 21:48:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-24 21:48:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-24 21:48:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-11-24 21:48:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-11-24 21:48:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-24 21:48:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-24 21:48:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-24 21:48:58,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-24 21:48:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:48:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2023-11-24 21:48:58,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2023-11-24 21:48:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:48:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:48:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:48:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:48:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:48:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-24 21:48:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-24 21:48:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-24 21:48:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-24 21:48:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-24 21:48:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-24 21:48:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-24 21:48:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-24 21:48:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-24 21:48:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-24 21:48:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-24 21:48:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2023-11-24 21:48:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-11-24 21:48:58,904 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-11-24 21:48:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 21:48:58,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 21:48:58,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:48:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:48:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:48:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:48:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:48:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 21:48:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-24 21:48:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-24 21:48:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-24 21:48:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-24 21:48:58,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-24 21:48:58,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-24 21:48:58,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-24 21:48:58,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-24 21:48:58,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-24 21:48:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-24 21:48:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-24 21:48:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:48:58,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:48:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-11-24 21:48:58,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-11-24 21:48:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-24 21:48:58,911 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-24 21:48:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-11-24 21:48:58,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-11-24 21:49:01,168 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:49:01,173 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:49:32,003 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:49:32,995 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:49:32,995 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:49:33,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:33 BoogieIcfgContainer [2023-11-24 21:49:33,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:49:33,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:49:33,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:49:33,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:49:33,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:48:49" (1/3) ... [2023-11-24 21:49:33,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd8d5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:33, skipping insertion in model container [2023-11-24 21:49:33,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:53" (2/3) ... [2023-11-24 21:49:33,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd8d5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:33, skipping insertion in model container [2023-11-24 21:49:33,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:33" (3/3) ... [2023-11-24 21:49:33,013 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c [2023-11-24 21:49:33,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:49:33,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:49:33,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:49:33,311 INFO L357 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, mHoare=true, 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;@7ae1fa7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:49:33,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:49:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 11980 states, 7845 states have (on average 1.3209687699171446) internal successors, (10363), 7958 states have internal predecessors, (10363), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2023-11-24 21:49:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4611 [2023-11-24 21:49:33,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:49:34,000 INFO L195 NwaCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-24 21:49:34,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:49:34,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:34,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1972581055, now seen corresponding path program 1 times [2023-11-24 21:49:34,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:34,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707466288] [2023-11-24 21:49:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:34,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms