./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 18:35:28,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 18:35:28,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 18:35:28,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 18:35:28,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 18:35:28,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 18:35:28,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 18:35:28,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 18:35:28,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 18:35:28,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 18:35:28,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 18:35:28,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 18:35:28,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 18:35:28,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 18:35:28,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 18:35:28,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 18:35:28,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 18:35:28,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 18:35:28,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 18:35:28,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 18:35:28,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 18:35:28,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 18:35:28,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 18:35:28,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 18:35:28,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 18:35:28,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 18:35:28,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 18:35:28,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 18:35:28,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 18:35:28,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 18:35:28,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 18:35:28,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 18:35:28,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 18:35:28,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 18:35:28,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 18:35:28,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 18:35:28,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 18:35:28,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 18:35:28,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 18:35:28,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 18:35:28,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 18:35:28,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 18:35:28,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 18:35:28,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 18:35:28,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 18:35:28,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 18:35:28,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 18:35:28,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 18:35:28,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 18:35:28,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 18:35:28,441 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 18:35:28,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 18:35:28,442 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 18:35:28,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 18:35:28,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 18:35:28,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 18:35:28,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 18:35:28,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 18:35:28,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 18:35:28,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 18:35:28,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 18:35:28,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 18:35:28,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 18:35:28,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 18:35:28,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 18:35:28,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 18:35:28,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:35:28,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 18:35:28,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 18:35:28,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 18:35:28,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 18:35:28,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 18:35:28,451 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 18:35:28,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 18:35:28,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 18:35:28,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2022-02-20 18:35:28,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 18:35:28,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 18:35:28,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 18:35:28,643 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 18:35:28,644 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 18:35:28,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2022-02-20 18:35:28,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ac906ca/40391235033243e2aad473a0351598b6/FLAGe9a28783b [2022-02-20 18:35:29,112 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 18:35:29,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2022-02-20 18:35:29,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ac906ca/40391235033243e2aad473a0351598b6/FLAGe9a28783b [2022-02-20 18:35:29,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ac906ca/40391235033243e2aad473a0351598b6 [2022-02-20 18:35:29,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 18:35:29,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 18:35:29,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 18:35:29,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 18:35:29,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 18:35:29,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:29,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645c7af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29, skipping insertion in model container [2022-02-20 18:35:29,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:29,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 18:35:29,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 18:35:29,350 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2022-02-20 18:35:29,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:35:29,628 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 18:35:29,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2022-02-20 18:35:29,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:35:29,850 INFO L208 MainTranslator]: Completed translation [2022-02-20 18:35:29,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29 WrapperNode [2022-02-20 18:35:29,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 18:35:29,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 18:35:29,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 18:35:29,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 18:35:29,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:29,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:30,004 INFO L137 Inliner]: procedures = 57, calls = 1672, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3715 [2022-02-20 18:35:30,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 18:35:30,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 18:35:30,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 18:35:30,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 18:35:30,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:30,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:30,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:30,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:30,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:30,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:30,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:30,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 18:35:30,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 18:35:30,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 18:35:30,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 18:35:30,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (1/1) ... [2022-02-20 18:35:30,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:35:30,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 18:35:30,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 18:35:30,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 18:35:30,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 18:35:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-02-20 18:35:30,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-02-20 18:35:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:35:30,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:35:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 18:35:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-02-20 18:35:30,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-02-20 18:35:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-02-20 18:35:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-02-20 18:35:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-02-20 18:35:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-02-20 18:35:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 18:35:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-02-20 18:35:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-02-20 18:35:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-02-20 18:35:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-02-20 18:35:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:35:30,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:35:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:35:30,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:35:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 18:35:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:35:30,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:35:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 18:35:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-02-20 18:35:30,214 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-02-20 18:35:30,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-20 18:35:30,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-20 18:35:30,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 18:35:30,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 18:35:30,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 18:35:30,214 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-02-20 18:35:30,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-02-20 18:35:30,214 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-02-20 18:35:30,215 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-02-20 18:35:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:35:30,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:35:30,575 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 18:35:30,576 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 18:35:36,989 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 18:35:37,000 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 18:35:37,000 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 18:35:37,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:35:37 BoogieIcfgContainer [2022-02-20 18:35:37,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 18:35:37,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 18:35:37,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 18:35:37,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 18:35:37,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 06:35:29" (1/3) ... [2022-02-20 18:35:37,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17103d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:35:37, skipping insertion in model container [2022-02-20 18:35:37,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:35:29" (2/3) ... [2022-02-20 18:35:37,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17103d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:35:37, skipping insertion in model container [2022-02-20 18:35:37,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:35:37" (3/3) ... [2022-02-20 18:35:37,007 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2022-02-20 18:35:37,012 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 18:35:37,013 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 18:35:37,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 18:35:37,050 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 18:35:37,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 18:35:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 1138 states, 729 states have (on average 1.289437585733882) internal successors, (940), 761 states have internal predecessors, (940), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2022-02-20 18:35:37,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2022-02-20 18:35:37,122 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 18:35:37,123 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 18:35:37,123 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 18:35:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 18:35:37,127 INFO L85 PathProgramCache]: Analyzing trace with hash -435675448, now seen corresponding path program 1 times [2022-02-20 18:35:37,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 18:35:37,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135348364] [2022-02-20 18:35:37,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 18:35:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms