./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:57:11,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:57:11,131 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:57:11,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:57:11,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:57:11,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:57:11,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:57:11,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:57:11,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:57:11,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:57:11,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:57:11,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:57:11,176 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:57:11,177 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:57:11,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:57:11,178 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:57:11,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:57:11,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:57:11,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:57:11,181 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:57:11,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:57:11,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:57:11,183 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:57:11,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:57:11,184 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:57:11,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:57:11,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:57:11,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:57:11,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:11,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:57:11,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:57:11,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:57:11,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:57:11,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:57:11,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:57:11,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:57:11,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:57:11,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:57:11,192 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:57:11,193 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_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f [2023-11-06 22:57:11,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:57:11,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:57:11,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:57:11,590 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:57:11,590 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:57:11,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2023-11-06 22:57:14,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:57:15,186 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:57:15,187 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2023-11-06 22:57:15,219 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/data/0f2e6d1ae/c17ec57444184bd3b570faa71906161b/FLAG9bef959a9 [2023-11-06 22:57:15,237 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/data/0f2e6d1ae/c17ec57444184bd3b570faa71906161b [2023-11-06 22:57:15,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:57:15,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:57:15,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:15,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:57:15,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:57:15,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:15" (1/1) ... [2023-11-06 22:57:15,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5315154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:15, skipping insertion in model container [2023-11-06 22:57:15,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:15" (1/1) ... [2023-11-06 22:57:15,351 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:57:15,615 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_839246bc-06b6-4b8b-92ea-498c303cb360/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c[1868,1881] [2023-11-06 22:57:16,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:16,186 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:57:16,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/ctm.ok4.i","-S") [42] [2023-11-06 22:57:16,204 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_839246bc-06b6-4b8b-92ea-498c303cb360/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c[1868,1881] [2023-11-06 22:57:16,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:16,653 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:57:16,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16 WrapperNode [2023-11-06 22:57:16,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:16,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:16,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:57:16,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:57:16,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:16,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:17,075 INFO L138 Inliner]: procedures = 99, calls = 2906, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8677 [2023-11-06 22:57:17,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:17,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:57:17,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:57:17,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:57:17,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:17,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:17,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:17,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:17,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:17,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:17,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:17,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:17,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:57:17,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:57:17,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:57:17,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:57:17,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (1/1) ... [2023-11-06 22:57:17,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:17,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:17,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:57:17,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839246bc-06b6-4b8b-92ea-498c303cb360/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:57:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2023-11-06 22:57:17,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2023-11-06 22:57:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2023-11-06 22:57:17,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2023-11-06 22:57:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:57:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2023-11-06 22:57:17,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2023-11-06 22:57:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-06 22:57:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-06 22:57:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2023-11-06 22:57:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2023-11-06 22:57:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2023-11-06 22:57:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2023-11-06 22:57:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-11-06 22:57:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-11-06 22:57:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2023-11-06 22:57:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2023-11-06 22:57:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2023-11-06 22:57:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2023-11-06 22:57:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2023-11-06 22:57:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2023-11-06 22:57:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:57:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-06 22:57:17,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-06 22:57:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2023-11-06 22:57:17,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2023-11-06 22:57:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2023-11-06 22:57:17,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2023-11-06 22:57:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2023-11-06 22:57:17,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2023-11-06 22:57:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2023-11-06 22:57:17,598 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2023-11-06 22:57:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2023-11-06 22:57:17,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2023-11-06 22:57:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-06 22:57:17,598 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-06 22:57:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:57:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-06 22:57:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-06 22:57:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2023-11-06 22:57:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2023-11-06 22:57:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2023-11-06 22:57:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2023-11-06 22:57:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2023-11-06 22:57:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2023-11-06 22:57:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-06 22:57:17,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-06 22:57:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2023-11-06 22:57:17,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2023-11-06 22:57:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-06 22:57:17,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-06 22:57:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2023-11-06 22:57:17,600 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2023-11-06 22:57:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2023-11-06 22:57:17,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2023-11-06 22:57:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2023-11-06 22:57:17,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2023-11-06 22:57:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2023-11-06 22:57:17,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2023-11-06 22:57:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2023-11-06 22:57:17,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2023-11-06 22:57:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2023-11-06 22:57:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2023-11-06 22:57:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-06 22:57:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-06 22:57:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2023-11-06 22:57:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2023-11-06 22:57:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2023-11-06 22:57:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2023-11-06 22:57:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2023-11-06 22:57:17,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2023-11-06 22:57:17,603 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2023-11-06 22:57:17,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2023-11-06 22:57:17,603 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2023-11-06 22:57:17,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2023-11-06 22:57:17,603 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2023-11-06 22:57:17,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2023-11-06 22:57:17,603 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2023-11-06 22:57:17,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2023-11-06 22:57:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2023-11-06 22:57:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2023-11-06 22:57:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2023-11-06 22:57:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2023-11-06 22:57:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2023-11-06 22:57:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2023-11-06 22:57:17,604 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2023-11-06 22:57:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2023-11-06 22:57:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2023-11-06 22:57:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2023-11-06 22:57:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:57:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2023-11-06 22:57:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2023-11-06 22:57:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:57:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:57:18,135 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:57:18,138 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:57:50,859 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:57:50,884 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:57:50,884 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:57:50,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:50 BoogieIcfgContainer [2023-11-06 22:57:50,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:57:50,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:57:50,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:57:50,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:57:50,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:15" (1/3) ... [2023-11-06 22:57:50,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269e25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:50, skipping insertion in model container [2023-11-06 22:57:50,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:16" (2/3) ... [2023-11-06 22:57:50,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269e25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:50, skipping insertion in model container [2023-11-06 22:57:50,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:50" (3/3) ... [2023-11-06 22:57:50,901 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.4.c [2023-11-06 22:57:50,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:57:50,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:57:51,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:51,087 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=LoopsAndPotentialCycles, 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;@14e42cb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:51,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:57:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 2469 states, 2115 states have (on average 1.4799054373522458) internal successors, (3130), 2139 states have internal predecessors, (3130), 308 states have call successors, (308), 44 states have call predecessors, (308), 44 states have return successors, (308), 298 states have call predecessors, (308), 308 states have call successors, (308) [2023-11-06 22:57:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-06 22:57:51,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:51,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:51,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:51,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:51,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1151272851, now seen corresponding path program 1 times [2023-11-06 22:57:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117680686] [2023-11-06 22:57:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:51,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-06 23:01:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:25,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:25,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:25,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117680686] [2023-11-06 23:01:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117680686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:25,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:01:25,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113586907] [2023-11-06 23:01:25,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:25,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:25,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:25,294 INFO L87 Difference]: Start difference. First operand has 2469 states, 2115 states have (on average 1.4799054373522458) internal successors, (3130), 2139 states have internal predecessors, (3130), 308 states have call successors, (308), 44 states have call predecessors, (308), 44 states have return successors, (308), 298 states have call predecessors, (308), 308 states have call successors, (308) Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:27,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:01:28,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:01:31,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []