./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme --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 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:43:43,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:43:43,497 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:43:43,503 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:43:43,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:43:43,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:43:43,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:43:43,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:43:43,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:43:43,535 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:43:43,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:43:43,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:43:43,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:43:43,538 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:43:43,539 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:43:43,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:43:43,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:43:43,541 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:43:43,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:43:43,542 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:43:43,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:43:43,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:43:43,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:43:43,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:43:43,546 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:43:43,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:43:43,547 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:43:43,547 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:43:43,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:43:43,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:43:43,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:43:43,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:43:43,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:43:43,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:43:43,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:43:43,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:43:43,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:43:43,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:43:43,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:43:43,555 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:43:43,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:43:43,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:43:43,556 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec [2023-11-26 11:43:43,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:43:43,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:43:43,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:43:43,923 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:43:43,924 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:43:43,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2023-11-26 11:43:47,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:43:47,719 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:43:47,721 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2023-11-26 11:43:47,789 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/data/fa8715639/2c9a70bd7d8d40b785b4a895e63e17e8/FLAG6a2d35c0d [2023-11-26 11:43:47,807 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/data/fa8715639/2c9a70bd7d8d40b785b4a895e63e17e8 [2023-11-26 11:43:47,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:43:47,817 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:43:47,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:43:47,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:43:47,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:43:47,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15015f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47, skipping insertion in model container [2023-11-26 11:43:47,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:48,145 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:43:48,401 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c[2278,2291] [2023-11-26 11:43:49,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:43:49,911 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:43:49,922 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.bug2.i","-S") [51] [2023-11-26 11:43:49,930 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c[2278,2291] [2023-11-26 11:43:51,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:43:51,119 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:43:51,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51 WrapperNode [2023-11-26 11:43:51,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:43:51,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:43:51,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:43:51,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:43:51,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:53,892 INFO L138 Inliner]: procedures = 62, calls = 18852, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 41393 [2023-11-26 11:43:53,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:43:53,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:43:53,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:43:53,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:43:53,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:53,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:54,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:54,817 INFO L175 MemorySlicer]: Split 14458 memory accesses to 22 slices as follows [2, 193, 17, 4, 9, 2, 2689, 3717, 2400, 1676, 1252, 852, 218, 322, 8, 218, 322, 2, 218, 322, 7, 8]. 26 percent of accesses are in the largest equivalence class. The 136 initializations are split as follows [2, 96, 8, 0, 4, 0, 0, 0, 8, 8, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0]. The 888 writes are split as follows [0, 1, 1, 0, 1, 1, 97, 97, 8, 8, 4, 4, 110, 108, 4, 110, 108, 1, 110, 108, 3, 4]. [2023-11-26 11:43:54,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:54,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:55,911 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:55,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:56,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:56,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:56,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:43:56,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:43:56,521 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:43:56,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:43:56,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:56,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:43:56,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:56,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:43:56,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e0b3f7-be1e-4a91-abec-382301900c16/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:43:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:43:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-26 11:43:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-26 11:43:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-11-26 11:43:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-11-26 11:43:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:43:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-26 11:43:56,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-26 11:43:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-26 11:43:56,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-26 11:43:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2023-11-26 11:43:56,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2023-11-26 11:43:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-11-26 11:43:56,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-11-26 11:43:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:43:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:43:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:43:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:43:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:43:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:43:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:43:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:43:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-26 11:43:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-26 11:43:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-26 11:43:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-26 11:43:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-26 11:43:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-26 11:43:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-26 11:43:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-26 11:43:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2023-11-26 11:43:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2023-11-26 11:43:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2023-11-26 11:43:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#19 [2023-11-26 11:43:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#20 [2023-11-26 11:43:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#21 [2023-11-26 11:43:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-26 11:43:56,607 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-26 11:43:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-11-26 11:43:56,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-11-26 11:43:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-26 11:43:56,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-26 11:43:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-26 11:43:56,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-26 11:43:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:43:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2023-11-26 11:43:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2023-11-26 11:43:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:43:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:43:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:43:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:43:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:43:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:43:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:43:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:43:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-26 11:43:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-26 11:43:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-26 11:43:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-26 11:43:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-26 11:43:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-26 11:43:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-26 11:43:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-26 11:43:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2023-11-26 11:43:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2023-11-26 11:43:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2023-11-26 11:43:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#19 [2023-11-26 11:43:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#20 [2023-11-26 11:43:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#21 [2023-11-26 11:43:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-26 11:43:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-26 11:43:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-11-26 11:43:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-11-26 11:43:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2023-11-26 11:43:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2023-11-26 11:43:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:43:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:43:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:43:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:43:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:43:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:43:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:43:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:43:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:43:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:43:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 11:43:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 11:43:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 11:43:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 11:43:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-26 11:43:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-26 11:43:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-26 11:43:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-26 11:43:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-26 11:43:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-26 11:43:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-26 11:43:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-26 11:43:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#20 [2023-11-26 11:43:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#21 [2023-11-26 11:43:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:43:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:43:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-11-26 11:43:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-11-26 11:43:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-26 11:43:56,621 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-26 11:43:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-11-26 11:43:56,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-11-26 11:43:59,075 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:43:59,080 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:44:32,496 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:44:33,332 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:44:33,332 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:44:33,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:33 BoogieIcfgContainer [2023-11-26 11:44:33,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:44:33,344 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:44:33,344 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:44:33,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:44:33,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:43:47" (1/3) ... [2023-11-26 11:44:33,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362ec9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:33, skipping insertion in model container [2023-11-26 11:44:33,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (2/3) ... [2023-11-26 11:44:33,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362ec9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:33, skipping insertion in model container [2023-11-26 11:44:33,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:33" (3/3) ... [2023-11-26 11:44:33,360 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-2.c [2023-11-26 11:44:33,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:44:33,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:44:33,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:44:33,916 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c0026ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:44:33,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:44:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 12454 states, 8091 states have (on average 1.3128167099246075) internal successors, (10622), 8204 states have internal predecessors, (10622), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) [2023-11-26 11:44:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5254 [2023-11-26 11:44:34,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:34,698 INFO L195 NwaCegarLoop]: trace histogram [444, 444, 444, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:34,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:34,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2146243662, now seen corresponding path program 1 times [2023-11-26 11:44:34,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:34,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720065094] [2023-11-26 11:44:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:34,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms