./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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.M4-2.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 bc7a523a551103aeb2dd7ea3e708e9b42a327a50ce055e0932147e1f855a3338 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:05:26,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:05:26,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:05:26,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:05:26,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:05:26,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:05:26,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:05:26,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:05:26,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:05:26,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:05:26,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:05:26,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:05:26,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:05:26,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:05:26,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:05:26,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:05:26,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:05:26,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:05:26,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:05:26,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:05:26,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:05:26,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:05:26,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:05:26,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:05:26,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:05:26,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:05:26,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:05:26,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:05:26,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:05:26,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:05:26,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:05:26,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:05:26,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:05:26,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:05:26,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:05:26,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:05:26,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:05:26,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:05:26,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:05:26,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:05:26,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:05:26,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:05:26,807 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:05:26,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:05:26,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:05:26,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:05:26,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:05:26,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:05:26,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:05:26,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:05:26,811 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:05:26,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:05:26,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:05:26,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:05:26,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:05:26,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:05:26,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:05:26,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:05:26,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:05:26,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:05:26,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:05:26,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:05:26,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:05:26,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:05:26,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:05:26,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:05:26,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:05:26,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:05:26,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:05:26,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:05:26,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:05:26,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:05:26,816 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:05:26,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:05:26,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:05:26,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:05:26,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc7a523a551103aeb2dd7ea3e708e9b42a327a50ce055e0932147e1f855a3338 [2021-12-14 15:05:27,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:05:27,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:05:27,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:05:27,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:05:27,064 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:05:27,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c [2021-12-14 15:05:27,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664b28dec/8d4e81c3bf5641248821aa26dfd50ee0/FLAG7c55737b4 [2021-12-14 15:05:27,655 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:05:27,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-2.c [2021-12-14 15:05:27,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664b28dec/8d4e81c3bf5641248821aa26dfd50ee0/FLAG7c55737b4 [2021-12-14 15:05:28,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664b28dec/8d4e81c3bf5641248821aa26dfd50ee0 [2021-12-14 15:05:28,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:05:28,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:05:28,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:05:28,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:05:28,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:05:28,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:28,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0313e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28, skipping insertion in model container [2021-12-14 15:05:28,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:28,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:05:28,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:05:28,332 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.M4-2.c[1719,1732] [2021-12-14 15:05:28,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:05:28,679 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:05:28,700 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.M4-2.c[1719,1732] [2021-12-14 15:05:28,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:05:28,923 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:05:28,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28 WrapperNode [2021-12-14 15:05:28,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:05:28,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:05:28,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:05:28,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:05:28,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:29,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:29,199 INFO L137 Inliner]: procedures = 58, calls = 3154, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5969 [2021-12-14 15:05:29,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:05:29,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:05:29,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:05:29,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:05:29,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:29,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:29,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:29,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:29,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:29,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:29,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:29,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:05:29,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:05:29,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:05:29,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:05:29,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (1/1) ... [2021-12-14 15:05:29,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:05:29,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:05:29,545 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) [2021-12-14 15:05:29,549 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 [2021-12-14 15:05:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:05:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-12-14 15:05:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-12-14 15:05:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-14 15:05:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-14 15:05:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-14 15:05:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-14 15:05:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 15:05:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-14 15:05:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-14 15:05:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-14 15:05:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-14 15:05:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-14 15:05:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-14 15:05:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 15:05:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-14 15:05:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-14 15:05:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-14 15:05:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-14 15:05:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-12-14 15:05:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-12-14 15:05:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-14 15:05:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-14 15:05:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-14 15:05:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-14 15:05:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-14 15:05:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-14 15:05:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 15:05:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-14 15:05:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-14 15:05:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 15:05:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-14 15:05:29,598 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-14 15:05:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-14 15:05:29,598 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-14 15:05:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-12-14 15:05:29,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-12-14 15:05:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-14 15:05:29,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-14 15:05:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 15:05:29,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 15:05:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:05:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:05:29,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:05:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-14 15:05:29,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-14 15:05:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-14 15:05:29,600 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-14 15:05:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-14 15:05:29,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-14 15:05:29,601 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-12-14 15:05:29,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-12-14 15:05:30,196 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:05:30,198 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:05:39,262 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:05:39,285 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:05:39,285 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 15:05:39,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:05:39 BoogieIcfgContainer [2021-12-14 15:05:39,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:05:39,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:05:39,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:05:39,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:05:39,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:05:28" (1/3) ... [2021-12-14 15:05:39,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6817578f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:05:39, skipping insertion in model container [2021-12-14 15:05:39,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:05:28" (2/3) ... [2021-12-14 15:05:39,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6817578f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:05:39, skipping insertion in model container [2021-12-14 15:05:39,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:05:39" (3/3) ... [2021-12-14 15:05:39,301 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_aso.1.M4-2.c [2021-12-14 15:05:39,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:05:39,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 15:05:39,371 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:05:39,384 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 [2021-12-14 15:05:39,385 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 15:05:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 2339 states, 1375 states have (on average 1.1985454545454546) internal successors, (1648), 1380 states have internal predecessors, (1648), 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) [2021-12-14 15:05:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1339 [2021-12-14 15:05:39,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:05:39,509 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] [2021-12-14 15:05:39,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:05:39,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:05:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash 181886461, now seen corresponding path program 1 times [2021-12-14 15:05:39,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:05:39,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377459822] [2021-12-14 15:05:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:05:39,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms