./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/rekh_aso.2.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 e0f65ddacc19e229149f7733305e27ede1d7c46ea04122324ae4c2ba294bcff0 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:22:09,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:22:09,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:22:09,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:22:09,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:22:09,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:22:09,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:22:09,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:22:09,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:22:09,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:22:09,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:22:09,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:22:09,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:22:09,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:22:09,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:22:09,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:22:09,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:22:09,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:22:09,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:22:09,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:22:09,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:22:09,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:22:09,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:22:09,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:22:09,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:22:09,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:22:09,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:22:09,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:22:09,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:22:09,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:22:09,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:22:09,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:22:09,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:22:09,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:22:09,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:22:09,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:22:09,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:22:09,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:22:09,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:22:09,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:22:09,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:22:09,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:22:09,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:22:09,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:22:09,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:22:09,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:22:09,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:22:09,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:22:09,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:22:09,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:22:09,392 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:22:09,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:22:09,392 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:22:09,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:22:09,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:22:09,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:22:09,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:22:09,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:22:09,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:22:09,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:22:09,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:22:09,393 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:22:09,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:22:09,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:22:09,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:22:09,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:22:09,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:22:09,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:22:09,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:22:09,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:22:09,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:22:09,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:22:09,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:22:09,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:22:09,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:22:09,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:22:09,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f65ddacc19e229149f7733305e27ede1d7c46ea04122324ae4c2ba294bcff0 [2021-12-15 11:22:09,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:22:09,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:22:09,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:22:09,590 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:22:09,591 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:22:09,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M1-2.c [2021-12-15 11:22:09,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efee50ebf/11ad6eb9dbde41ce8eb725bb3dba124c/FLAG591093177 [2021-12-15 11:22:10,162 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:22:10,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M1-2.c [2021-12-15 11:22:10,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efee50ebf/11ad6eb9dbde41ce8eb725bb3dba124c/FLAG591093177 [2021-12-15 11:22:10,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efee50ebf/11ad6eb9dbde41ce8eb725bb3dba124c [2021-12-15 11:22:10,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:22:10,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:22:10,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:22:10,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:22:10,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:22:10,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:22:10" (1/1) ... [2021-12-15 11:22:10,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47caddff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:10, skipping insertion in model container [2021-12-15 11:22:10,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:22:10" (1/1) ... [2021-12-15 11:22:10,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:22:10,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:22:10,879 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/rekh_aso.2.M1-2.c[1974,1987] [2021-12-15 11:22:11,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:22:11,213 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:22:11,221 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/rekh_aso.2.M1-2.c[1974,1987] [2021-12-15 11:22:11,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:22:11,400 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:22:11,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11 WrapperNode [2021-12-15 11:22:11,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:22:11,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:22:11,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:22:11,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:22:11,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (1/1) ... [2021-12-15 11:22:11,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (1/1) ... [2021-12-15 11:22:11,595 INFO L137 Inliner]: procedures = 61, calls = 3158, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 6014 [2021-12-15 11:22:11,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:22:11,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:22:11,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:22:11,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:22:11,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (1/1) ... [2021-12-15 11:22:11,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (1/1) ... [2021-12-15 11:22:11,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (1/1) ... [2021-12-15 11:22:11,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (1/1) ... [2021-12-15 11:22:11,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (1/1) ... [2021-12-15 11:22:11,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (1/1) ... [2021-12-15 11:22:11,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (1/1) ... [2021-12-15 11:22:11,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:22:11,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:22:11,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:22:11,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:22:11,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (1/1) ... [2021-12-15 11:22:11,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:22:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:22:11,838 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) [2021-12-15 11:22:11,860 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 [2021-12-15 11:22:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:22:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-12-15 11:22:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-12-15 11:22:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-15 11:22:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-15 11:22:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-15 11:22:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-15 11:22:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 11:22:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-15 11:22:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-15 11:22:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-15 11:22:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-15 11:22:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-15 11:22:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-15 11:22:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 11:22:11,873 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-15 11:22:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-15 11:22:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-15 11:22:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-15 11:22:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-12-15 11:22:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-12-15 11:22:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-15 11:22:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-15 11:22:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-15 11:22:11,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-15 11:22:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-15 11:22:11,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-15 11:22:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 11:22:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 11:22:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-15 11:22:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-15 11:22:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-15 11:22:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-15 11:22:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-12-15 11:22:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-12-15 11:22:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-15 11:22:11,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-15 11:22:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 11:22:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 11:22:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:22:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:22:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:22:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-15 11:22:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-15 11:22:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-15 11:22:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-15 11:22:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-15 11:22:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-15 11:22:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-12-15 11:22:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-12-15 11:22:12,409 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:22:12,411 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:22:21,297 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:22:21,320 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:22:21,321 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:22:21,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:21 BoogieIcfgContainer [2021-12-15 11:22:21,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:22:21,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:22:21,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:22:21,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:22:21,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:22:10" (1/3) ... [2021-12-15 11:22:21,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d79a1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:22:21, skipping insertion in model container [2021-12-15 11:22:21,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:11" (2/3) ... [2021-12-15 11:22:21,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d79a1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:22:21, skipping insertion in model container [2021-12-15 11:22:21,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:21" (3/3) ... [2021-12-15 11:22:21,333 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_aso.2.M1-2.c [2021-12-15 11:22:21,337 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:22:21,337 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:22:21,380 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:22:21,384 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 [2021-12-15 11:22:21,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:22:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 2371 states, 1382 states have (on average 1.2011577424023154) internal successors, (1660), 1386 states have internal predecessors, (1660), 966 states have call successors, (966), 21 states have call predecessors, (966), 21 states have return successors, (966), 964 states have call predecessors, (966), 966 states have call successors, (966) [2021-12-15 11:22:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2021-12-15 11:22:21,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:22:21,488 INFO L514 BasicCegarLoop]: trace histogram [209, 209, 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, 1, 1, 1, 1, 1, 1] [2021-12-15 11:22:21,489 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:22:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:22:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash -982308712, now seen corresponding path program 1 times [2021-12-15 11:22:21,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:22:21,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131751087] [2021-12-15 11:22:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:22:21,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms