./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 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/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_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/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_50302d96-f254-4b63-960d-e2f1dc8647f7/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 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:45:57,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:45:57,762 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:45:57,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:45:57,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:45:57,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:45:57,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:45:57,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:45:57,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:45:57,801 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:45:57,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:45:57,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:45:57,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:45:57,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:45:57,802 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:45:57,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:45:57,803 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:45:57,803 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:45:57,803 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:45:57,803 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:45:57,803 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:45:57,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:45:57,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:45:57,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:45:57,804 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:45:57,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:45:57,804 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:45:57,804 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:45:57,804 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:45:57,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:45:57,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:45:57,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:45:57,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:45:57,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:45:57,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:45:57,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:45:57,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:45:57,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:45:57,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:45:57,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:45:57,805 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:45:57,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:45:57,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:45:57,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:45:57,806 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:45:57,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:45:57,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:45:57,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:45:57,808 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_50302d96-f254-4b63-960d-e2f1dc8647f7/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 -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2024-11-23 22:45:58,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:45:58,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:45:58,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:45:58,146 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:45:58,146 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:45:58,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2024-11-23 22:46:01,319 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/data/c09312612/ebb235ce44ca46ed85a6e8a9094f24a8/FLAGc0a07a026 [2024-11-23 22:46:01,744 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:46:01,744 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2024-11-23 22:46:01,768 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/data/c09312612/ebb235ce44ca46ed85a6e8a9094f24a8/FLAGc0a07a026 [2024-11-23 22:46:01,786 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/data/c09312612/ebb235ce44ca46ed85a6e8a9094f24a8 [2024-11-23 22:46:01,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:46:01,790 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:46:01,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:46:01,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:46:01,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:46:01,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:46:01" (1/1) ... [2024-11-23 22:46:01,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104b3491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:01, skipping insertion in model container [2024-11-23 22:46:01,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:46:01" (1/1) ... [2024-11-23 22:46:01,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:46:02,048 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_50302d96-f254-4b63-960d-e2f1dc8647f7/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2024-11-23 22:46:02,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:46:02,418 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:46:02,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2024-11-23 22:46:02,438 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_50302d96-f254-4b63-960d-e2f1dc8647f7/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2024-11-23 22:46:02,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:46:02,748 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:46:02,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02 WrapperNode [2024-11-23 22:46:02,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:46:02,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:46:02,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:46:02,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:46:02,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:02,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,053 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3992 [2024-11-23 22:46:03,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:46:03,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:46:03,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:46:03,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:46:03,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,187 INFO L175 MemorySlicer]: Split 1382 memory accesses to 17 slices as follows [2, 264, 305, 156, 2, 113, 79, 57, 83, 105, 82, 105, 8, 4, 7, 2, 8]. 22 percent of accesses are in the largest equivalence class. The 166 initializations are split as follows [2, 24, 24, 2, 0, 2, 1, 1, 27, 27, 27, 27, 0, 0, 2, 0, 0]. The 175 writes are split as follows [0, 24, 24, 2, 1, 2, 1, 1, 28, 26, 28, 26, 4, 0, 3, 1, 4]. [2024-11-23 22:46:03,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,412 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:46:03,549 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:46:03,549 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:46:03,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:46:03,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (1/1) ... [2024-11-23 22:46:03,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:46:03,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:46:03,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:46:03,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:46:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:46:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-11-23 22:46:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-11-23 22:46:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-11-23 22:46:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-11-23 22:46:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 22:46:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-11-23 22:46:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-11-23 22:46:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-11-23 22:46:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-11-23 22:46:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-11-23 22:46:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-11-23 22:46:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 22:46:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 22:46:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 22:46:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 22:46:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-11-23 22:46:03,628 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-11-23 22:46:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-11-23 22:46:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-23 22:46:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-23 22:46:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-23 22:46:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 22:46:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 22:46:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 22:46:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-23 22:46:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-11-23 22:46:03,634 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:46:03,634 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:46:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 22:46:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:46:03,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:46:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-11-23 22:46:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-11-23 22:46:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-11-23 22:46:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-11-23 22:46:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-11-23 22:46:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-11-23 22:46:04,141 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:46:04,143 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:46:11,704 INFO L? ?]: Removed 191 outVars from TransFormulas that were not future-live. [2024-11-23 22:46:11,705 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:46:11,773 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:46:11,774 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 22:46:11,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:46:11 BoogieIcfgContainer [2024-11-23 22:46:11,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:46:11,780 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:46:11,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:46:11,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:46:11,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:46:01" (1/3) ... [2024-11-23 22:46:11,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f8acdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:46:11, skipping insertion in model container [2024-11-23 22:46:11,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:02" (2/3) ... [2024-11-23 22:46:11,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f8acdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:46:11, skipping insertion in model container [2024-11-23 22:46:11,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:46:11" (3/3) ... [2024-11-23 22:46:11,794 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2024-11-23 22:46:11,814 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:46:11,817 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M1-2.c that has 16 procedures, 1139 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:46:11,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:46:11,961 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;@223f2fc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:46:11,962 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:46:11,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 1139 states, 730 states have (on average 1.289041095890411) internal successors, (941), 762 states have internal predecessors, (941), 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) [2024-11-23 22:46:12,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-11-23 22:46:12,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:46:12,074 INFO L218 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] [2024-11-23 22:46:12,074 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:46:12,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2120413097, now seen corresponding path program 1 times [2024-11-23 22:46:12,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:12,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437313012] [2024-11-23 22:46:12,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:13,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-23 22:46:13,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:13,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437313012] [2024-11-23 22:46:13,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437313012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:46:13,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009565829] [2024-11-23 22:46:13,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:13,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:46:13,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:46:13,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:46:13,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:46:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:15,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:46:15,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:46:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-23 22:46:15,666 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:46:15,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009565829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:15,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:46:15,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 22:46:15,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958763658] [2024-11-23 22:46:15,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:15,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:46:15,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:15,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:46:15,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:46:15,712 INFO L87 Difference]: Start difference. First operand has 1139 states, 730 states have (on average 1.289041095890411) internal successors, (941), 762 states have internal predecessors, (941), 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) [2024-11-23 22:46:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:46:15,901 INFO L93 Difference]: Finished difference Result 2273 states and 3820 transitions. [2024-11-23 22:46:15,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:46:15,904 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 [2024-11-23 22:46:15,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:46:15,927 INFO L225 Difference]: With dead ends: 2273 [2024-11-23 22:46:15,927 INFO L226 Difference]: Without dead ends: 1133 [2024-11-23 22:46:15,948 INFO L434 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 [2024-11-23 22:46:15,951 INFO L435 NwaCegarLoop]: 1722 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, 1722 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 [2024-11-23 22:46:15,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:46:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-11-23 22:46:16,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2024-11-23 22:46:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 725 states have (on average 1.2841379310344827) internal successors, (931), 756 states have internal predecessors, (931), 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) [2024-11-23 22:46:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1715 transitions. [2024-11-23 22:46:16,374 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1715 transitions. Word has length 722 [2024-11-23 22:46:16,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:46:16,393 INFO L471 AbstractCegarLoop]: Abstraction has 1133 states and 1715 transitions. [2024-11-23 22:46:16,394 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) [2024-11-23 22:46:16,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1715 transitions. [2024-11-23 22:46:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-11-23 22:46:16,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:46:16,470 INFO L218 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] [2024-11-23 22:46:16,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:46:16,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:46:16,671 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:46:16,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:16,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1184015677, now seen corresponding path program 1 times [2024-11-23 22:46:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:16,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120324215] [2024-11-23 22:46:16,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:45,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 471 refuted. 0 times theorem prover too weak. 13782 trivial. 0 not checked. [2024-11-23 22:46:45,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:45,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120324215] [2024-11-23 22:46:45,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120324215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:46:45,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254737925] [2024-11-23 22:46:45,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:45,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:46:45,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:46:45,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:46:45,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50302d96-f254-4b63-960d-e2f1dc8647f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:46:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:52,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-23 22:46:52,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:46:52,495 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 [2024-11-23 22:46:52,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 3 [2024-11-23 22:46:52,594 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 [2024-11-23 22:46:53,135 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