./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/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_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/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_de37def0-a1fa-4fd4-9403-168141872dec/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 0c11dfbc24d8e2936a0720b93d6e580e096b076c7149ef4cbc8369f1ef818941 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:13:56,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:13:56,687 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:13:56,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:13:56,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:13:56,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:13:56,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:13:56,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:13:56,721 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:13:56,721 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:13:56,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:13:56,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:13:56,723 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:13:56,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:13:56,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:13:56,725 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:13:56,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:13:56,726 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:13:56,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:13:56,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:13:56,727 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:13:56,727 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:13:56,728 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:13:56,728 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:13:56,729 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:13:56,729 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:13:56,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:13:56,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:13:56,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:13:56,730 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:13:56,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:13:56,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:13:56,731 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:13:56,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:13:56,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:13:56,732 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:13:56,732 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:13:56,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:13:56,733 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:13:56,733 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_de37def0-a1fa-4fd4-9403-168141872dec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c11dfbc24d8e2936a0720b93d6e580e096b076c7149ef4cbc8369f1ef818941 [2023-11-06 21:13:56,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:13:56,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:13:57,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:13:57,004 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:13:57,004 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:13:57,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c [2023-11-06 21:14:00,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:00,691 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:00,692 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c [2023-11-06 21:14:00,725 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP/data/fcc0e1139/f6c1f4ca022d48eabd4e014176d4f984/FLAG92e99477d [2023-11-06 21:14:00,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP/data/fcc0e1139/f6c1f4ca022d48eabd4e014176d4f984 [2023-11-06 21:14:00,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:00,747 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:00,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:00,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:00,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:00,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:00" (1/1) ... [2023-11-06 21:14:00,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a4328f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:00, skipping insertion in model container [2023-11-06 21:14:00,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:00" (1/1) ... [2023-11-06 21:14:00,878 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:01,138 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_de37def0-a1fa-4fd4-9403-168141872dec/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c[1870,1883] [2023-11-06 21:14:01,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:01,884 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:01,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/ctm.ok3.i","-S") [42] [2023-11-06 21:14:01,901 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_de37def0-a1fa-4fd4-9403-168141872dec/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c[1870,1883] [2023-11-06 21:14:02,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:02,286 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:02,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02 WrapperNode [2023-11-06 21:14:02,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:02,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:02,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:02,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:02,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:02,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:02,665 INFO L138 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8541 [2023-11-06 21:14:02,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:02,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:02,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:02,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:02,676 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:02,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:02,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:02,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:03,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:03,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:03,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:03,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:03,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:03,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:03,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:03,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:03,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (1/1) ... [2023-11-06 21:14:03,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:03,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:03,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:03,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de37def0-a1fa-4fd4-9403-168141872dec/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2023-11-06 21:14:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2023-11-06 21:14:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2023-11-06 21:14:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2023-11-06 21:14:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:14:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2023-11-06 21:14:03,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2023-11-06 21:14:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-06 21:14:03,279 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-06 21:14:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2023-11-06 21:14:03,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2023-11-06 21:14:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2023-11-06 21:14:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2023-11-06 21:14:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-11-06 21:14:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-11-06 21:14:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2023-11-06 21:14:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2023-11-06 21:14:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2023-11-06 21:14:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2023-11-06 21:14:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2023-11-06 21:14:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2023-11-06 21:14:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:14:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-06 21:14:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-06 21:14:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2023-11-06 21:14:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2023-11-06 21:14:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2023-11-06 21:14:03,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2023-11-06 21:14:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2023-11-06 21:14:03,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2023-11-06 21:14:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2023-11-06 21:14:03,286 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2023-11-06 21:14:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2023-11-06 21:14:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2023-11-06 21:14:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-06 21:14:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-06 21:14:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-06 21:14:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-06 21:14:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2023-11-06 21:14:03,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2023-11-06 21:14:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2023-11-06 21:14:03,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2023-11-06 21:14:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2023-11-06 21:14:03,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2023-11-06 21:14:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-06 21:14:03,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-06 21:14:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2023-11-06 21:14:03,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2023-11-06 21:14:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-06 21:14:03,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-06 21:14:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2023-11-06 21:14:03,290 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2023-11-06 21:14:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2023-11-06 21:14:03,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2023-11-06 21:14:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2023-11-06 21:14:03,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2023-11-06 21:14:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2023-11-06 21:14:03,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2023-11-06 21:14:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2023-11-06 21:14:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2023-11-06 21:14:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2023-11-06 21:14:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2023-11-06 21:14:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-06 21:14:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-06 21:14:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2023-11-06 21:14:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2023-11-06 21:14:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2023-11-06 21:14:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2023-11-06 21:14:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2023-11-06 21:14:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2023-11-06 21:14:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2023-11-06 21:14:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2023-11-06 21:14:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2023-11-06 21:14:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2023-11-06 21:14:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2023-11-06 21:14:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2023-11-06 21:14:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2023-11-06 21:14:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2023-11-06 21:14:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2023-11-06 21:14:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2023-11-06 21:14:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2023-11-06 21:14:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2023-11-06 21:14:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2023-11-06 21:14:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2023-11-06 21:14:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2023-11-06 21:14:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2023-11-06 21:14:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2023-11-06 21:14:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2023-11-06 21:14:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2023-11-06 21:14:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2023-11-06 21:14:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:03,863 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:03,865 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:31,112 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:31,138 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:31,138 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 21:14:31,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:31 BoogieIcfgContainer [2023-11-06 21:14:31,145 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:31,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:31,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:31,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:31,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:00" (1/3) ... [2023-11-06 21:14:31,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754a6562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:31, skipping insertion in model container [2023-11-06 21:14:31,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:02" (2/3) ... [2023-11-06 21:14:31,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754a6562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:31, skipping insertion in model container [2023-11-06 21:14:31,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:31" (3/3) ... [2023-11-06 21:14:31,155 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-1.c [2023-11-06 21:14:31,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:31,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:14:31,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:14:31,301 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;@18b89029, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:14:31,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:14:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2113 states have (on average 1.4803596781826787) internal successors, (3128), 2137 states have internal predecessors, (3128), 306 states have call successors, (306), 44 states have call predecessors, (306), 44 states have return successors, (306), 296 states have call predecessors, (306), 306 states have call successors, (306) [2023-11-06 21:14:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-06 21:14:31,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:31,355 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 21:14:31,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:31,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:31,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1381223433, now seen corresponding path program 1 times [2023-11-06 21:14:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812125129] [2023-11-06 21:14:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:58,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-06 21:17:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:58,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:17:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:58,810 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 21:17:58,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:58,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812125129] [2023-11-06 21:17:58,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812125129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:17:58,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:17:58,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:17:58,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833576619] [2023-11-06 21:17:58,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:17:58,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:17:58,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:17:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:17:58,857 INFO L87 Difference]: Start difference. First operand has 2465 states, 2113 states have (on average 1.4803596781826787) internal successors, (3128), 2137 states have internal predecessors, (3128), 306 states have call successors, (306), 44 states have call predecessors, (306), 44 states have return successors, (306), 296 states have call predecessors, (306), 306 states have call successors, (306) 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 21:18:00,959 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 21:18:02,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:18:05,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:18:17,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []