./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/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_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1 --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-d790fec [2024-12-02 10:49:02,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:49:02,632 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:49:02,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:49:02,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:49:02,659 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:49:02,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:49:02,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:49:02,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:49:02,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:49:02,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:49:02,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:49:02,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:49:02,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:49:02,661 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:49:02,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:49:02,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:49:02,662 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:49:02,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:49:02,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:49:02,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:49:02,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:49:02,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:49:02,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:49:02,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:49:02,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:49:02,662 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:49:02,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:49:02,663 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:49:02,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:49:02,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:49:02,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:49:02,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:49:02,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:49:02,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:49:02,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:49:02,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:49:02,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:49:02,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:49:02,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:49:02,664 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:49:02,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:49:02,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:49:02,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:49:02,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:49:02,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:49:02,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:49:02,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:49:02,664 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_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1 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 [2024-12-02 10:49:02,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:49:02,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:49:02,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:49:02,902 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:49:02,902 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:49:02,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2024-12-02 10:49:05,504 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/data/63b3b8c4a/5f50fc113f2d4f0fa782865f6385db5c/FLAGed55d5bf7 [2024-12-02 10:49:05,784 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:49:05,784 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2024-12-02 10:49:05,798 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/data/63b3b8c4a/5f50fc113f2d4f0fa782865f6385db5c/FLAGed55d5bf7 [2024-12-02 10:49:05,811 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/data/63b3b8c4a/5f50fc113f2d4f0fa782865f6385db5c [2024-12-02 10:49:05,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:49:05,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:49:05,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:49:05,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:49:05,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:49:05,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:49:05" (1/1) ... [2024-12-02 10:49:05,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ef81e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:05, skipping insertion in model container [2024-12-02 10:49:05,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:49:05" (1/1) ... [2024-12-02 10:49:05,854 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:49:05,977 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_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2024-12-02 10:49:06,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:49:06,239 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:49:06,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2024-12-02 10:49:06,250 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_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2024-12-02 10:49:06,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:49:06,400 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:49:06,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06 WrapperNode [2024-12-02 10:49:06,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:49:06,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:49:06,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:49:06,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:49:06,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,561 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3992 [2024-12-02 10:49:06,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:49:06,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:49:06,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:49:06,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:49:06,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,591 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,679 INFO L175 MemorySlicer]: Split 1382 memory accesses to 17 slices as follows [2, 264, 305, 156, 2, 113, 79, 57, 83, 105, 82, 2, 105, 8, 8, 7, 4]. 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, 0, 27, 0, 0, 2, 0]. The 175 writes are split as follows [0, 24, 24, 2, 1, 2, 1, 1, 28, 26, 28, 1, 26, 4, 4, 3, 0]. [2024-12-02 10:49:06,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,784 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:49:06,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:49:06,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:49:06,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:49:06,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (1/1) ... [2024-12-02 10:49:06,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:49:06,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:49:06,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:49:06,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:49:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:49:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-12-02 10:49:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-12-02 10:49:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-12-02 10:49:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-12-02 10:49:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 10:49:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-12-02 10:49:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-12-02 10:49:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-12-02 10:49:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-12-02 10:49:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-12-02 10:49:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-12-02 10:49:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-12-02 10:49:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-12-02 10:49:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-12-02 10:49:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-12-02 10:49:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-12-02 10:49:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-12-02 10:49:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-12-02 10:49:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-12-02 10:49:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-12-02 10:49:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-12-02 10:49:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-12-02 10:49:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-12-02 10:49:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-12-02 10:49:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 10:49:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-12-02 10:49:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-12-02 10:49:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-12-02 10:49:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 10:49:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 10:49:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:49:06,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:49:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-12-02 10:49:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-12-02 10:49:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-12-02 10:49:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-12-02 10:49:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-12-02 10:49:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-12-02 10:49:07,261 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:49:07,263 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:49:12,698 INFO L? ?]: Removed 191 outVars from TransFormulas that were not future-live. [2024-12-02 10:49:12,698 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:49:12,730 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:49:12,730 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 10:49:12,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:49:12 BoogieIcfgContainer [2024-12-02 10:49:12,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:49:12,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:49:12,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:49:12,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:49:12,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:49:05" (1/3) ... [2024-12-02 10:49:12,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753354d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:49:12, skipping insertion in model container [2024-12-02 10:49:12,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:49:06" (2/3) ... [2024-12-02 10:49:12,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753354d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:49:12, skipping insertion in model container [2024-12-02 10:49:12,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:49:12" (3/3) ... [2024-12-02 10:49:12,741 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2024-12-02 10:49:12,756 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:49:12,759 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. [2024-12-02 10:49:12,857 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:49:12,870 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;@36d1b44e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:49:12,870 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:49:12,878 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) [2024-12-02 10:49:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-12-02 10:49:12,943 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:49:12,944 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] [2024-12-02 10:49:12,945 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:49:12,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:49:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2120413097, now seen corresponding path program 1 times [2024-12-02 10:49:12,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:49:12,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066275036] [2024-12-02 10:49:12,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:12,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:49:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-12-02 10:49:14,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:49:14,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066275036] [2024-12-02 10:49:14,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066275036] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:49:14,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544977181] [2024-12-02 10:49:14,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:14,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:49:14,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:49:14,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:49:14,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:49:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:15,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 10:49:15,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:49:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-12-02 10:49:15,108 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:49:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544977181] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:49:15,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:49:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 10:49:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181500856] [2024-12-02 10:49:15,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:49:15,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:49:15,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:49:15,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:49:15,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:49:15,140 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) [2024-12-02 10:49:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:49:15,255 INFO L93 Difference]: Finished difference Result 2273 states and 3820 transitions. [2024-12-02 10:49:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:49:15,258 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 [2024-12-02 10:49:15,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:49:15,276 INFO L225 Difference]: With dead ends: 2273 [2024-12-02 10:49:15,276 INFO L226 Difference]: Without dead ends: 1133 [2024-12-02 10:49:15,288 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 [2024-12-02 10:49:15,291 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 [2024-12-02 10:49:15,291 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] [2024-12-02 10:49:15,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-12-02 10:49:15,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2024-12-02 10:49:15,482 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) [2024-12-02 10:49:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1715 transitions. [2024-12-02 10:49:15,497 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1715 transitions. Word has length 722 [2024-12-02 10:49:15,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:49:15,498 INFO L471 AbstractCegarLoop]: Abstraction has 1133 states and 1715 transitions. [2024-12-02 10:49:15,498 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) [2024-12-02 10:49:15,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1715 transitions. [2024-12-02 10:49:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-12-02 10:49:15,545 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:49:15,545 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] [2024-12-02 10:49:15,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:49:15,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:49:15,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:49:15,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:49:15,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1184015677, now seen corresponding path program 1 times [2024-12-02 10:49:15,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:49:15,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657431811] [2024-12-02 10:49:15,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:15,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:49:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 225 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2024-12-02 10:49:27,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:49:27,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657431811] [2024-12-02 10:49:27,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657431811] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:49:27,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872091340] [2024-12-02 10:49:27,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:27,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:49:27,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:49:27,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:49:27,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd93db5-1d3e-4a77-b21b-f0684c5ecda5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:49:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:31,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 10:49:31,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:49:31,965 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 [2024-12-02 10:49:31,972 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 [2024-12-02 10:49:32,037 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 [2024-12-02 10:49:32,049 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 [2024-12-02 10:49:32,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-12-02 10:58:15,763 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 618498 treesize of output 610296