./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_nxt.1.M1-1.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 d2d3aad0694c3b388c0809528dd70602c78583397ee307f7b8ddb787c2822233 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:17:26,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:17:26,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:17:26,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:17:26,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:17:26,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:17:26,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:17:26,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:17:26,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:17:26,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:17:26,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:17:26,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:17:26,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:17:26,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:17:26,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:17:26,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:17:26,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:17:26,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:17:26,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:17:26,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:17:26,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:17:26,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:17:26,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:17:26,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:17:26,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:17:26,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:17:26,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:17:26,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:17:26,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:17:26,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:17:26,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:17:26,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:17:26,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:17:26,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:17:26,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:17:26,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:17:26,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:17:26,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:17:26,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:17:26,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:17:26,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:17:26,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:17:26,139 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:17:26,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:17:26,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:17:26,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:17:26,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:17:26,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:17:26,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:17:26,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:17:26,143 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:17:26,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:17:26,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:17:26,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:17:26,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:17:26,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:17:26,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:17:26,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:17:26,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:17:26,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:17:26,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:17:26,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:17:26,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:17:26,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:17:26,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:17:26,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:17:26,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:17:26,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:17:26,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:17:26,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:17:26,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:17:26,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:17:26,155 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:17:26,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:17:26,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:17:26,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2d3aad0694c3b388c0809528dd70602c78583397ee307f7b8ddb787c2822233 [2021-12-28 01:17:26,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:17:26,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:17:26,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:17:26,493 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:17:26,493 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:17:26,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-1.c [2021-12-28 01:17:26,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e138d2431/922968c1566043a0a425c71b6057fc8c/FLAG26f0375c8 [2021-12-28 01:17:27,087 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:17:27,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-1.c [2021-12-28 01:17:27,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e138d2431/922968c1566043a0a425c71b6057fc8c/FLAG26f0375c8 [2021-12-28 01:17:27,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e138d2431/922968c1566043a0a425c71b6057fc8c [2021-12-28 01:17:27,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:17:27,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:17:27,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:17:27,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:17:27,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:17:27,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:17:27" (1/1) ... [2021-12-28 01:17:27,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3750d975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:27, skipping insertion in model container [2021-12-28 01:17:27,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:17:27" (1/1) ... [2021-12-28 01:17:27,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:17:27,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:17:27,786 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_nxt.1.M1-1.c[1510,1523] [2021-12-28 01:17:28,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:17:28,154 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:17:28,180 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_nxt.1.M1-1.c[1510,1523] [2021-12-28 01:17:28,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:17:28,368 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:17:28,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28 WrapperNode [2021-12-28 01:17:28,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:17:28,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:17:28,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:17:28,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:17:28,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (1/1) ... [2021-12-28 01:17:28,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (1/1) ... [2021-12-28 01:17:28,616 INFO L137 Inliner]: procedures = 55, calls = 2033, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 3946 [2021-12-28 01:17:28,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:17:28,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:17:28,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:17:28,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:17:28,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (1/1) ... [2021-12-28 01:17:28,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (1/1) ... [2021-12-28 01:17:28,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (1/1) ... [2021-12-28 01:17:28,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (1/1) ... [2021-12-28 01:17:28,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (1/1) ... [2021-12-28 01:17:28,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (1/1) ... [2021-12-28 01:17:28,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (1/1) ... [2021-12-28 01:17:28,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:17:28,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:17:28,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:17:28,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:17:28,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (1/1) ... [2021-12-28 01:17:28,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:17:28,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:17:28,896 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) [2021-12-28 01:17:28,922 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 [2021-12-28 01:17:28,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:17:28,939 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-28 01:17:28,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-28 01:17:28,939 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-28 01:17:28,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-28 01:17:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 01:17:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-28 01:17:28,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-28 01:17:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-28 01:17:28,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-28 01:17:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-28 01:17:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-28 01:17:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 01:17:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-28 01:17:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-28 01:17:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-28 01:17:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-28 01:17:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-28 01:17:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-28 01:17:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-28 01:17:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-28 01:17:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 01:17:28,962 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-28 01:17:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-28 01:17:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 01:17:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-28 01:17:28,963 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-28 01:17:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 01:17:28,963 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 01:17:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:17:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:17:28,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:17:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-28 01:17:28,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-28 01:17:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-28 01:17:28,964 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-28 01:17:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-28 01:17:28,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-28 01:17:29,430 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:17:29,431 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:17:35,809 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:17:35,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:17:35,833 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 01:17:35,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:17:35 BoogieIcfgContainer [2021-12-28 01:17:35,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:17:35,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:17:35,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:17:35,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:17:35,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:17:27" (1/3) ... [2021-12-28 01:17:35,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649911ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:17:35, skipping insertion in model container [2021-12-28 01:17:35,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:17:28" (2/3) ... [2021-12-28 01:17:35,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649911ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:17:35, skipping insertion in model container [2021-12-28 01:17:35,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:17:35" (3/3) ... [2021-12-28 01:17:35,844 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M1-1.c [2021-12-28 01:17:35,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:17:35,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:17:35,919 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:17:35,925 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 [2021-12-28 01:17:35,925 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:17:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 1597 states, 969 states have (on average 1.2291021671826625) internal successors, (1191), 974 states have internal predecessors, (1191), 611 states have call successors, (611), 15 states have call predecessors, (611), 15 states have return successors, (611), 609 states have call predecessors, (611), 611 states have call successors, (611) [2021-12-28 01:17:36,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2134 [2021-12-28 01:17:36,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:17:36,138 INFO L514 BasicCegarLoop]: trace histogram [241, 241, 241, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:17:36,139 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:17:36,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:17:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash -937610375, now seen corresponding path program 1 times [2021-12-28 01:17:36,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:17:36,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910604190] [2021-12-28 01:17:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:17:36,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms