./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.1.M4-1.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 6591ce47dfe4224cb6f7a03e7ab6e8c9fb535aeaf619e89bc0784a15f3516b25 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:01:41,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:01:41,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:01:41,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:01:41,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:01:41,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:01:41,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:01:41,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:01:41,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:01:41,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:01:41,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:01:41,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:01:41,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:01:41,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:01:41,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:01:41,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:01:41,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:01:41,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:01:41,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:01:41,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:01:41,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:01:41,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:01:41,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:01:41,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:01:41,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:01:41,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:01:41,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:01:41,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:01:41,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:01:41,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:01:41,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:01:41,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:01:41,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:01:41,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:01:41,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:01:41,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:01:41,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:01:41,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:01:41,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:01:41,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:01:41,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:01:41,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:01:41,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:01:41,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:01:41,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:01:41,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:01:41,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:01:41,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:01:41,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:01:41,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:01:41,802 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:01:41,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:01:41,803 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:01:41,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:01:41,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:01:41,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:01:41,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:01:41,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:01:41,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:01:41,804 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:01:41,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:01:41,804 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:01:41,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:01:41,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:01:41,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:01:41,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:01:41,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:01:41,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:01:41,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:01:41,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:01:41,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:01:41,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:01:41,806 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:01:41,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:01:41,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:01:41,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:01:41,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6591ce47dfe4224cb6f7a03e7ab6e8c9fb535aeaf619e89bc0784a15f3516b25 [2021-12-17 16:01:42,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:01:42,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:01:42,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:01:42,044 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:01:42,046 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:01:42,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.c [2021-12-17 16:01:42,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0feb7e0cc/bd193c6dcd2940aea87192e478310e18/FLAGd4a3bed56 [2021-12-17 16:01:42,602 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:01:42,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.c [2021-12-17 16:01:42,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0feb7e0cc/bd193c6dcd2940aea87192e478310e18/FLAGd4a3bed56 [2021-12-17 16:01:43,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0feb7e0cc/bd193c6dcd2940aea87192e478310e18 [2021-12-17 16:01:43,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:01:43,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:01:43,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:01:43,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:01:43,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:01:43,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:43,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4965b69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43, skipping insertion in model container [2021-12-17 16:01:43,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:43,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:01:43,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:01:43,311 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.1.M4-1.c[1800,1813] [2021-12-17 16:01:43,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:01:43,584 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:01:43,593 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.1.M4-1.c[1800,1813] [2021-12-17 16:01:43,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:01:43,827 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:01:43,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43 WrapperNode [2021-12-17 16:01:43,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:01:43,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:01:43,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:01:43,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:01:43,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:43,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:44,029 INFO L137 Inliner]: procedures = 60, calls = 3154, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5973 [2021-12-17 16:01:44,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:01:44,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:01:44,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:01:44,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:01:44,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:44,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:44,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:44,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:44,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:44,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:44,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:44,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:01:44,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:01:44,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:01:44,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:01:44,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (1/1) ... [2021-12-17 16:01:44,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:01:44,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:01:44,289 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) [2021-12-17 16:01:44,303 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 [2021-12-17 16:01:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:01:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-12-17 16:01:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-12-17 16:01:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-17 16:01:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-17 16:01:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-17 16:01:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-17 16:01:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 16:01:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-17 16:01:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-17 16:01:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-17 16:01:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-17 16:01:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-17 16:01:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-17 16:01:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 16:01:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-17 16:01:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-17 16:01:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-17 16:01:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-17 16:01:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-12-17 16:01:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-12-17 16:01:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 16:01:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 16:01:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 16:01:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 16:01:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-17 16:01:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-17 16:01:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 16:01:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-17 16:01:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-17 16:01:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 16:01:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-17 16:01:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-17 16:01:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-17 16:01:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-17 16:01:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-12-17 16:01:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-12-17 16:01:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-17 16:01:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-17 16:01:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 16:01:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 16:01:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:01:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:01:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:01:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-17 16:01:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-17 16:01:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-17 16:01:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-17 16:01:44,325 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-17 16:01:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-17 16:01:44,326 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-12-17 16:01:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-12-17 16:01:44,750 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:01:44,752 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:01:56,671 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:01:56,688 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:01:56,688 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 16:01:56,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:01:56 BoogieIcfgContainer [2021-12-17 16:01:56,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:01:56,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:01:56,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:01:56,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:01:56,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:01:43" (1/3) ... [2021-12-17 16:01:56,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d880f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:01:56, skipping insertion in model container [2021-12-17 16:01:56,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:01:43" (2/3) ... [2021-12-17 16:01:56,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d880f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:01:56, skipping insertion in model container [2021-12-17 16:01:56,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:01:56" (3/3) ... [2021-12-17 16:01:56,698 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_aso.1.M4-1.c [2021-12-17 16:01:56,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:01:56,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 16:01:56,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:01:56,756 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 [2021-12-17 16:01:56,757 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 16:01:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 2341 states, 1377 states have (on average 1.198257080610022) internal successors, (1650), 1381 states have internal predecessors, (1650), 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) [2021-12-17 16:01:56,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1339 [2021-12-17 16:01:56,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:01:56,869 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, 1, 1] [2021-12-17 16:01:56,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:01:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:01:56,875 INFO L85 PathProgramCache]: Analyzing trace with hash -590931743, now seen corresponding path program 1 times [2021-12-17 16:01:56,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:01:56,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099768238] [2021-12-17 16:01:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:01:56,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms