./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3ec7c03a28dc415c6db5fadbfd8dcd491b1a493cd1bf88ef12d02131cd13437 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:12:35,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:12:35,097 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:12:35,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:12:35,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:12:35,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:12:35,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:12:35,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:12:35,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:12:35,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:12:35,134 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:12:35,134 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:12:35,135 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:12:35,136 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:12:35,136 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:12:35,137 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:12:35,138 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:12:35,138 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:12:35,139 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:12:35,140 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:12:35,140 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:12:35,141 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:12:35,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:12:35,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:12:35,144 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:12:35,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:12:35,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:12:35,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:12:35,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:12:35,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:12:35,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:12:35,150 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:12:35,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:12:35,151 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:12:35,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:12:35,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:12:35,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:12:35,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:12:35,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:12:35,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:12:35,154 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:12:35,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:12:35,155 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:12:35,156 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:12:35,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:12:35,157 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3ec7c03a28dc415c6db5fadbfd8dcd491b1a493cd1bf88ef12d02131cd13437 [2023-11-19 04:12:35,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:12:35,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:12:35,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:12:35,409 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:12:35,410 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:12:35,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c [2023-11-19 04:12:38,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:12:38,932 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:12:38,933 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c [2023-11-19 04:12:38,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/data/d07ede6e5/b64f04bc066b4d56b00560d4b4e2ec8f/FLAG38aa08192 [2023-11-19 04:12:38,989 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/data/d07ede6e5/b64f04bc066b4d56b00560d4b4e2ec8f [2023-11-19 04:12:38,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:12:38,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:12:39,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:39,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:12:39,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:12:39,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:38" (1/1) ... [2023-11-19 04:12:39,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e85f5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:39, skipping insertion in model container [2023-11-19 04:12:39,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:38" (1/1) ... [2023-11-19 04:12:39,134 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:12:39,383 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_d15e47ba-1b32-4a12-8fba-d330e53a7103/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c[1868,1881] [2023-11-19 04:12:40,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:40,118 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:12:40,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/ctm.ok1.i","-S") [42] [2023-11-19 04:12:40,137 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_d15e47ba-1b32-4a12-8fba-d330e53a7103/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c[1868,1881] [2023-11-19 04:12:40,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:40,492 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:12:40,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40 WrapperNode [2023-11-19 04:12:40,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:40,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:12:40,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:12:40,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:12:40,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:40,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:40,869 INFO L138 Inliner]: procedures = 99, calls = 2727, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8412 [2023-11-19 04:12:40,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:12:40,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:12:40,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:12:40,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:12:40,883 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:40,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:40,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:40,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:41,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:41,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:41,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:41,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:41,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:12:41,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:12:41,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:12:41,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:12:41,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (1/1) ... [2023-11-19 04:12:41,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:12:41,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:41,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:12:41,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15e47ba-1b32-4a12-8fba-d330e53a7103/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:12:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2023-11-19 04:12:41,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2023-11-19 04:12:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2023-11-19 04:12:41,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2023-11-19 04:12:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:12:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2023-11-19 04:12:41,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2023-11-19 04:12:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-19 04:12:41,406 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-19 04:12:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2023-11-19 04:12:41,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2023-11-19 04:12:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2023-11-19 04:12:41,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2023-11-19 04:12:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-11-19 04:12:41,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-11-19 04:12:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2023-11-19 04:12:41,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2023-11-19 04:12:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2023-11-19 04:12:41,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2023-11-19 04:12:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2023-11-19 04:12:41,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2023-11-19 04:12:41,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:12:41,468 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-19 04:12:41,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-19 04:12:41,468 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2023-11-19 04:12:41,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2023-11-19 04:12:41,468 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2023-11-19 04:12:41,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2023-11-19 04:12:41,468 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2023-11-19 04:12:41,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2023-11-19 04:12:41,468 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2023-11-19 04:12:41,469 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2023-11-19 04:12:41,469 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2023-11-19 04:12:41,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2023-11-19 04:12:41,469 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-19 04:12:41,469 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-19 04:12:41,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:12:41,469 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-19 04:12:41,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-19 04:12:41,469 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2023-11-19 04:12:41,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2023-11-19 04:12:41,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2023-11-19 04:12:41,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2023-11-19 04:12:41,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2023-11-19 04:12:41,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2023-11-19 04:12:41,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-19 04:12:41,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-19 04:12:41,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2023-11-19 04:12:41,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2023-11-19 04:12:41,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-19 04:12:41,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-19 04:12:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2023-11-19 04:12:41,471 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2023-11-19 04:12:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2023-11-19 04:12:41,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2023-11-19 04:12:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2023-11-19 04:12:41,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2023-11-19 04:12:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2023-11-19 04:12:41,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2023-11-19 04:12:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2023-11-19 04:12:41,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2023-11-19 04:12:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2023-11-19 04:12:41,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2023-11-19 04:12:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-19 04:12:41,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-19 04:12:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2023-11-19 04:12:41,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2023-11-19 04:12:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2023-11-19 04:12:41,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2023-11-19 04:12:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2023-11-19 04:12:41,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2023-11-19 04:12:41,473 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2023-11-19 04:12:41,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2023-11-19 04:12:41,476 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2023-11-19 04:12:41,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2023-11-19 04:12:41,476 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2023-11-19 04:12:41,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2023-11-19 04:12:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2023-11-19 04:12:41,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2023-11-19 04:12:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2023-11-19 04:12:41,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2023-11-19 04:12:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2023-11-19 04:12:41,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2023-11-19 04:12:41,478 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2023-11-19 04:12:41,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2023-11-19 04:12:41,479 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2023-11-19 04:12:41,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2023-11-19 04:12:41,479 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2023-11-19 04:12:41,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2023-11-19 04:12:41,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:12:41,479 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2023-11-19 04:12:41,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2023-11-19 04:12:41,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:12:41,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:12:42,003 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:12:42,009 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:13:04,387 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:13:16,267 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:13:16,267 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 04:13:16,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:16 BoogieIcfgContainer [2023-11-19 04:13:16,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:13:16,284 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:13:16,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:13:16,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:13:16,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:12:38" (1/3) ... [2023-11-19 04:13:16,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7385feb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:16, skipping insertion in model container [2023-11-19 04:13:16,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:40" (2/3) ... [2023-11-19 04:13:16,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7385feb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:16, skipping insertion in model container [2023-11-19 04:13:16,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:16" (3/3) ... [2023-11-19 04:13:16,291 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.1.c [2023-11-19 04:13:16,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:13:16,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:13:16,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:13:16,418 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=FINITE_AUTOMATA, 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;@34d0f56b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:13:16,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:13:16,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 962 states, 611 states have (on average 1.386252045826514) internal successors, (847), 635 states have internal predecessors, (847), 305 states have call successors, (305), 44 states have call predecessors, (305), 44 states have return successors, (305), 295 states have call predecessors, (305), 305 states have call successors, (305) [2023-11-19 04:13:16,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 04:13:16,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:16,446 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] [2023-11-19 04:13:16,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:13:16,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:16,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1952278156, now seen corresponding path program 1 times [2023-11-19 04:13:16,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:13:16,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957368140] [2023-11-19 04:13:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:16,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms