./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX --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 bc7a523a551103aeb2dd7ea3e708e9b42a327a50ce055e0932147e1f855a3338 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:10:28,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:10:29,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:10:29,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:10:29,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:10:29,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:10:29,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:10:29,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:10:29,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:10:29,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:10:29,081 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:10:29,082 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:10:29,082 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:10:29,084 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:10:29,085 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:10:29,085 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:10:29,086 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:10:29,086 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:10:29,086 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:10:29,087 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:10:29,089 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:10:29,090 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:10:29,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:10:29,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:10:29,092 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:10:29,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:10:29,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:10:29,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:10:29,094 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:10:29,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:10:29,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:10:29,096 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:10:29,096 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:10:29,096 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:10:29,097 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:10:29,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:10:29,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:29,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:10:29,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:10:29,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:10:29,098 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:10:29,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:10:29,099 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:10:29,099 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:10:29,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:10:29,100 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_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc7a523a551103aeb2dd7ea3e708e9b42a327a50ce055e0932147e1f855a3338 [2023-11-12 00:10:29,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:10:29,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:10:29,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:10:29,438 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:10:29,439 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:10:29,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c [2023-11-12 00:10:32,549 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:10:33,036 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:10:33,038 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c [2023-11-12 00:10:33,073 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/data/8d939b09f/5024ec3935db4aa39e065f3e87152439/FLAGb0d7f448d [2023-11-12 00:10:33,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/data/8d939b09f/5024ec3935db4aa39e065f3e87152439 [2023-11-12 00:10:33,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:10:33,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:10:33,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:33,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:10:33,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:10:33,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:33" (1/1) ... [2023-11-12 00:10:33,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55be9740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:33, skipping insertion in model container [2023-11-12 00:10:33,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:33" (1/1) ... [2023-11-12 00:10:33,189 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:10:33,363 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_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c[1719,1732] [2023-11-12 00:10:33,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:33,928 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:10:33,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/aso.bug1.i","-S") [43] [2023-11-12 00:10:33,946 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_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c[1719,1732] [2023-11-12 00:10:34,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:34,281 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:10:34,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34 WrapperNode [2023-11-12 00:10:34,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:34,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:10:34,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:10:34,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:10:34,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:34,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:34,637 INFO L138 Inliner]: procedures = 58, calls = 3154, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 6186 [2023-11-12 00:10:34,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:10:34,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:10:34,639 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:10:34,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:10:34,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:34,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:34,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:34,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:35,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:35,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:35,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:35,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:35,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:10:35,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:10:35,159 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:10:35,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:10:35,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (1/1) ... [2023-11-12 00:10:35,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:35,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:35,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:10:35,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a11c1d30-9d8d-4f90-8bc3-b99927ef6211/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:10:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:10:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2023-11-12 00:10:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2023-11-12 00:10:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-12 00:10:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-12 00:10:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-11-12 00:10:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-11-12 00:10:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:10:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-12 00:10:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-12 00:10:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-12 00:10:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-12 00:10:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-11-12 00:10:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-11-12 00:10:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:10:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-12 00:10:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-12 00:10:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-11-12 00:10:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-11-12 00:10:35,273 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2023-11-12 00:10:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2023-11-12 00:10:35,273 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-12 00:10:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-12 00:10:35,274 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-12 00:10:35,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-12 00:10:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2023-11-12 00:10:35,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2023-11-12 00:10:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:10:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-11-12 00:10:35,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-11-12 00:10:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:10:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-12 00:10:35,277 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-12 00:10:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-11-12 00:10:35,278 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-11-12 00:10:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2023-11-12 00:10:35,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2023-11-12 00:10:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2023-11-12 00:10:35,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2023-11-12 00:10:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:10:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:10:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:10:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:10:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:10:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-11-12 00:10:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-11-12 00:10:35,280 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-12 00:10:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-12 00:10:35,280 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-11-12 00:10:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-11-12 00:10:35,280 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2023-11-12 00:10:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2023-11-12 00:10:35,946 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:10:35,953 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:10:51,086 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:10:51,528 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:10:51,529 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:10:51,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:51 BoogieIcfgContainer [2023-11-12 00:10:51,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:10:51,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:10:51,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:10:51,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:10:51,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:10:33" (1/3) ... [2023-11-12 00:10:51,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcb11fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:10:51, skipping insertion in model container [2023-11-12 00:10:51,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:34" (2/3) ... [2023-11-12 00:10:51,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcb11fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:10:51, skipping insertion in model container [2023-11-12 00:10:51,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:51" (3/3) ... [2023-11-12 00:10:51,545 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_aso.1.M4-2.c [2023-11-12 00:10:51,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:10:51,566 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:10:51,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:10:51,685 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;@45107c6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:10:51,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:10:51,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 2295 states, 1331 states have (on average 1.199098422238918) internal successors, (1596), 1336 states have internal predecessors, (1596), 940 states have call successors, (940), 22 states have call predecessors, (940), 22 states have return successors, (940), 938 states have call predecessors, (940), 940 states have call successors, (940) [2023-11-12 00:10:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2023-11-12 00:10:51,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:51,792 INFO L195 NwaCegarLoop]: trace histogram [209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:51,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:10:51,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:51,799 INFO L85 PathProgramCache]: Analyzing trace with hash 346875143, now seen corresponding path program 1 times [2023-11-12 00:10:51,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:51,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622504083] [2023-11-12 00:10:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:51,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms