./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 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/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_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC --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 0.3.0-dev-6497de0 [2024-11-24 00:42:43,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:42:43,603 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:42:43,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:42:43,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:42:43,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:42:43,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:42:43,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:42:43,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:42:43,635 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:42:43,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:42:43,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:42:43,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:42:43,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:42:43,636 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:42:43,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:42:43,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:42:43,637 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:42:43,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:42:43,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:42:43,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:42:43,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:42:43,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:42:43,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:42:43,638 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:42:43,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:42:43,638 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:42:43,638 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:42:43,638 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:42:43,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:42:43,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:42:43,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:42:43,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:42:43,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:42:43,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:42:43,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:42:43,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:42:43,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:42:43,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:42:43,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:42:43,640 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:42:43,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:42:43,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:42:43,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:42:43,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:42:43,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:42:43,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:42:43,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:42:43,641 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC 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 [2024-11-24 00:42:43,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:42:43,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:42:43,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:42:43,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:42:43,934 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:42:43,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2024-11-24 00:42:47,013 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/data/5576b2197/539f5e0e0956436181646ab1c88d66bf/FLAG4951ecb7e [2024-11-24 00:42:47,907 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:42:47,908 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2024-11-24 00:42:47,956 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/data/5576b2197/539f5e0e0956436181646ab1c88d66bf/FLAG4951ecb7e [2024-11-24 00:42:48,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/data/5576b2197/539f5e0e0956436181646ab1c88d66bf [2024-11-24 00:42:48,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:42:48,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:42:48,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:42:48,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:42:48,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:42:48,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:42:48" (1/1) ... [2024-11-24 00:42:48,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4cc957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:48, skipping insertion in model container [2024-11-24 00:42:48,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:42:48" (1/1) ... [2024-11-24 00:42:48,353 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:42:48,609 WARN L250 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_9a5a5102-7efe-4a8b-8cb9-073d857352e8/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686] [2024-11-24 00:42:50,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:42:50,219 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:42:50,230 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2024-11-24 00:42:50,241 WARN L250 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_9a5a5102-7efe-4a8b-8cb9-073d857352e8/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686] [2024-11-24 00:42:51,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:42:51,942 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:42:51,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51 WrapperNode [2024-11-24 00:42:51,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:42:51,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:42:51,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:42:51,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:42:52,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:52,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:55,653 INFO L138 Inliner]: procedures = 57, calls = 18490, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40481 [2024-11-24 00:42:55,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:42:55,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:42:55,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:42:55,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:42:55,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:55,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:56,235 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:56,594 INFO L175 MemorySlicer]: Split 14318 memory accesses to 17 slices as follows [2, 2784, 3812, 2400, 2, 8, 1676, 1252, 852, 326, 4, 429, 325, 429, 2, 7, 8]. 27 percent of accesses are in the largest equivalence class. The 652 initializations are split as follows [2, 96, 96, 8, 0, 0, 8, 4, 4, 108, 0, 108, 108, 108, 0, 2, 0]. The 661 writes are split as follows [0, 96, 96, 8, 1, 4, 8, 4, 4, 109, 0, 107, 109, 107, 1, 3, 4]. [2024-11-24 00:42:56,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:56,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:57,829 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:57,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:58,024 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:58,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:58,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:58,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:42:58,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:42:58,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:42:58,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:42:58,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (1/1) ... [2024-11-24 00:42:58,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:42:58,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:42:58,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:42:58,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:42:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:42:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-11-24 00:42:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-11-24 00:42:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-11-24 00:42:58,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-11-24 00:42:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:42:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-11-24 00:42:58,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-11-24 00:42:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-11-24 00:42:58,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-11-24 00:42:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-11-24 00:42:58,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-11-24 00:42:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:42:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:42:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:42:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:42:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 00:42:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 00:42:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 00:42:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-24 00:42:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-24 00:42:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-24 00:42:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-24 00:42:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-24 00:42:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-24 00:42:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-24 00:42:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-24 00:42:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-24 00:42:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-24 00:42:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-11-24 00:42:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-11-24 00:42:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-11-24 00:42:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-11-24 00:42:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-24 00:42:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-24 00:42:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-24 00:42:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-24 00:42:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:42:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-24 00:42:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-24 00:42:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:42:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:42:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:42:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:42:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 00:42:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 00:42:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 00:42:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-24 00:42:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-24 00:42:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-24 00:42:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-24 00:42:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-24 00:42:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-24 00:42:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-24 00:42:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-24 00:42:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-24 00:42:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-11-24 00:42:58,754 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:42:58,754 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 00:42:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 00:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 00:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-24 00:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-24 00:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-24 00:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-24 00:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-24 00:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:42:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-11-24 00:42:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-11-24 00:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-11-24 00:42:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-11-24 00:42:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-11-24 00:42:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-11-24 00:43:01,686 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:43:01,689 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:43:44,365 INFO L? ?]: Removed 272 outVars from TransFormulas that were not future-live. [2024-11-24 00:43:44,365 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:43:44,791 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:43:44,792 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 00:43:44,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:43:44 BoogieIcfgContainer [2024-11-24 00:43:44,793 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:43:44,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:43:44,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:43:44,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:43:44,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:42:48" (1/3) ... [2024-11-24 00:43:44,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b597d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:43:44, skipping insertion in model container [2024-11-24 00:43:44,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:42:51" (2/3) ... [2024-11-24 00:43:44,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b597d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:43:44, skipping insertion in model container [2024-11-24 00:43:44,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:43:44" (3/3) ... [2024-11-24 00:43:44,804 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c [2024-11-24 00:43:44,822 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:43:44,826 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M4-1.c that has 16 procedures, 12014 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:43:45,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:43:45,216 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;@49770acb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:43:45,216 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:43:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 12014 states, 7879 states have (on average 1.3195837035156746) internal successors, (10397), 7992 states have internal predecessors, (10397), 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) [2024-11-24 00:43:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2024-11-24 00:43:45,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:45,846 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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1, 1, 1] [2024-11-24 00:43:45,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:45,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash -877292869, now seen corresponding path program 1 times [2024-11-24 00:43:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:45,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181384677] [2024-11-24 00:43:45,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:45,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 226464 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 225792 trivial. 0 not checked. [2024-11-24 00:44:05,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:05,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181384677] [2024-11-24 00:44:05,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181384677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:44:05,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794951531] [2024-11-24 00:44:05,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:05,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:44:05,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:05,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:44:05,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:44:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:24,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 13978 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:44:24,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:44:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 226464 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 225792 trivial. 0 not checked. [2024-11-24 00:44:24,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:44:24,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794951531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:24,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:44:24,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:44:24,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468214348] [2024-11-24 00:44:24,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:24,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:44:24,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:24,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:44:24,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:44:25,024 INFO L87 Difference]: Start difference. First operand has 12014 states, 7879 states have (on average 1.3195837035156746) internal successors, (10397), 7992 states have internal predecessors, (10397), 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) Second operand has 2 states, 2 states have (on average 1468.0) internal successors, (2936), 2 states have internal predecessors, (2936), 2 states have call successors, (337), 2 states have call predecessors, (337), 1 states have return successors, (337), 1 states have call predecessors, (337), 2 states have call successors, (337) [2024-11-24 00:44:25,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:25,900 INFO L93 Difference]: Finished difference Result 24023 states and 41362 transitions. [2024-11-24 00:44:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:44:25,903 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1468.0) internal successors, (2936), 2 states have internal predecessors, (2936), 2 states have call successors, (337), 2 states have call predecessors, (337), 1 states have return successors, (337), 1 states have call predecessors, (337), 2 states have call successors, (337) Word has length 4616 [2024-11-24 00:44:25,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:26,044 INFO L225 Difference]: With dead ends: 24023 [2024-11-24 00:44:26,044 INFO L226 Difference]: Without dead ends: 12008 [2024-11-24 00:44:26,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4617 GetRequests, 4617 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:44:26,142 INFO L435 NwaCegarLoop]: 18630 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, 18630 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:26,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18630 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:44:26,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12008 states. [2024-11-24 00:44:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12008 to 12008. [2024-11-24 00:44:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12008 states, 7874 states have (on average 1.3191516383032766) internal successors, (10387), 7986 states have internal predecessors, (10387), 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) [2024-11-24 00:44:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12008 states to 12008 states and 18623 transitions. [2024-11-24 00:44:39,132 INFO L78 Accepts]: Start accepts. Automaton has 12008 states and 18623 transitions. Word has length 4616 [2024-11-24 00:44:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:39,137 INFO L471 AbstractCegarLoop]: Abstraction has 12008 states and 18623 transitions. [2024-11-24 00:44:39,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1468.0) internal successors, (2936), 2 states have internal predecessors, (2936), 2 states have call successors, (337), 2 states have call predecessors, (337), 1 states have return successors, (337), 1 states have call predecessors, (337), 2 states have call successors, (337) [2024-11-24 00:44:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 12008 states and 18623 transitions. [2024-11-24 00:44:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2024-11-24 00:44:39,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:39,599 INFO L218 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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1, 1, 1] [2024-11-24 00:44:39,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:44:39,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5a5102-7efe-4a8b-8cb9-073d857352e8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:44:39,801 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:39,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1365387983, now seen corresponding path program 1 times [2024-11-24 00:44:39,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:39,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306383473] [2024-11-24 00:44:39,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:39,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms