./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.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 0d0faf19803047b9d51fb440293a8075aae4a757b1a8a36a5355760a1968a70e --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:23:07,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:23:07,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:23:07,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:23:07,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:23:07,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:23:07,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:23:07,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:23:07,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:23:07,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:23:07,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:23:07,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:23:07,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:23:07,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:23:07,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:23:07,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:23:07,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:23:07,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:23:07,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:23:07,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:23:07,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:23:07,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:23:07,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:23:07,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:23:07,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:23:07,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:23:07,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:23:07,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:23:07,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:23:07,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:23:07,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:23:07,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:23:07,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:23:07,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:23:07,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:23:07,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:23:07,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:23:07,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:23:07,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:23:07,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:23:07,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:23:07,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:23:07,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:23:07,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:23:07,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:23:07,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:23:07,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:23:07,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:23:07,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:23:07,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:23:07,822 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:23:07,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:23:07,823 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:23:07,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:23:07,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:23:07,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:23:07,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:23:07,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:23:07,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:23:07,824 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:23:07,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:23:07,824 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:23:07,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:23:07,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:23:07,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:23:07,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:23:07,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:23:07,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:23:07,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:23:07,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:23:07,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:23:07,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:23:07,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:23:07,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:23:07,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:23:07,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:23:07,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0faf19803047b9d51fb440293a8075aae4a757b1a8a36a5355760a1968a70e [2021-12-15 11:23:08,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:23:08,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:23:08,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:23:08,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:23:08,075 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:23:08,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2021-12-15 11:23:08,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74ae270f/910a79f248224809bd5f28f29b07e848/FLAG85242eef6 [2021-12-15 11:23:08,608 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:23:08,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2021-12-15 11:23:08,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74ae270f/910a79f248224809bd5f28f29b07e848/FLAG85242eef6 [2021-12-15 11:23:09,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74ae270f/910a79f248224809bd5f28f29b07e848 [2021-12-15 11:23:09,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:23:09,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:23:09,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:23:09,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:23:09,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:23:09,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:09,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e19471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09, skipping insertion in model container [2021-12-15 11:23:09,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:09,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:23:09,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:23:09,390 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.M4-1.c[1510,1523] [2021-12-15 11:23:09,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:23:09,643 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:23:09,665 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.M4-1.c[1510,1523] [2021-12-15 11:23:09,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:23:09,809 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:23:09,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09 WrapperNode [2021-12-15 11:23:09,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:23:09,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:23:09,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:23:09,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:23:09,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:09,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:10,017 INFO L137 Inliner]: procedures = 55, calls = 2046, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 3968 [2021-12-15 11:23:10,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:23:10,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:23:10,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:23:10,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:23:10,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:10,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:10,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:10,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:10,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:10,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:10,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:10,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:23:10,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:23:10,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:23:10,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:23:10,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (1/1) ... [2021-12-15 11:23:10,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:23:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:23:10,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:23:10,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:23:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:23:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-15 11:23:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-15 11:23:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-15 11:23:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-15 11:23:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 11:23:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-15 11:23:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-15 11:23:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-15 11:23:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-15 11:23:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-15 11:23:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-15 11:23:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 11:23:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-15 11:23:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-15 11:23:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-15 11:23:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-15 11:23:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-15 11:23:10,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-15 11:23:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-15 11:23:10,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-15 11:23:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 11:23:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-15 11:23:10,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-15 11:23:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-15 11:23:10,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-15 11:23:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 11:23:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-15 11:23:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-15 11:23:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 11:23:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 11:23:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:23:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:23:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:23:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-15 11:23:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-15 11:23:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-15 11:23:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-15 11:23:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-15 11:23:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-15 11:23:10,730 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:23:10,731 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:23:16,597 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:23:16,608 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:23:16,608 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:23:16,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:23:16 BoogieIcfgContainer [2021-12-15 11:23:16,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:23:16,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:23:16,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:23:16,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:23:16,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:23:09" (1/3) ... [2021-12-15 11:23:16,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a7d25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:23:16, skipping insertion in model container [2021-12-15 11:23:16,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:09" (2/3) ... [2021-12-15 11:23:16,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a7d25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:23:16, skipping insertion in model container [2021-12-15 11:23:16,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:23:16" (3/3) ... [2021-12-15 11:23:16,617 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-1.c [2021-12-15 11:23:16,621 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:23:16,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:23:16,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:23:16,663 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:23:16,663 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:23:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 1603 states, 972 states have (on average 1.228395061728395) internal successors, (1194), 977 states have internal predecessors, (1194), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 611 states have call predecessors, (613), 613 states have call successors, (613) [2021-12-15 11:23:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8483 [2021-12-15 11:23:17,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:23:17,332 INFO L514 BasicCegarLoop]: trace histogram [964, 964, 964, 108, 108, 108, 108, 108, 108, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:23:17,332 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:23:17,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:23:17,337 INFO L85 PathProgramCache]: Analyzing trace with hash -767459317, now seen corresponding path program 1 times [2021-12-15 11:23:17,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:23:17,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111995318] [2021-12-15 11:23:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:23:17,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:23:17,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:23:17,393 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:23:17,396 INFO L158 Benchmark]: Toolchain (without parser) took 8234.76ms. Allocated memory was 121.6MB in the beginning and 224.4MB in the end (delta: 102.8MB). Free memory was 90.3MB in the beginning and 92.5MB in the end (delta: -2.1MB). Peak memory consumption was 162.5MB. Max. memory is 16.1GB. [2021-12-15 11:23:17,397 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 51.9MB in the beginning and 51.9MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:23:17,397 INFO L158 Benchmark]: CACSL2BoogieTranslator took 646.58ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 48.4MB in the end (delta: 41.9MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2021-12-15 11:23:17,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 206.52ms. Allocated memory is still 121.6MB. Free memory was 48.4MB in the beginning and 72.6MB in the end (delta: -24.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-12-15 11:23:17,398 INFO L158 Benchmark]: Boogie Preprocessor took 153.48ms. Allocated memory is still 121.6MB. Free memory was 72.6MB in the beginning and 53.0MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 11:23:17,398 INFO L158 Benchmark]: RCFGBuilder took 6437.82ms. Allocated memory was 121.6MB in the beginning and 172.0MB in the end (delta: 50.3MB). Free memory was 52.2MB in the beginning and 103.7MB in the end (delta: -51.4MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2021-12-15 11:23:17,399 INFO L158 Benchmark]: TraceAbstraction took 783.06ms. Allocated memory was 172.0MB in the beginning and 224.4MB in the end (delta: 52.4MB). Free memory was 103.7MB in the beginning and 92.5MB in the end (delta: 11.2MB). Peak memory consumption was 126.7MB. Max. memory is 16.1GB. [2021-12-15 11:23:17,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 51.9MB in the beginning and 51.9MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 646.58ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 48.4MB in the end (delta: 41.9MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 206.52ms. Allocated memory is still 121.6MB. Free memory was 48.4MB in the beginning and 72.6MB in the end (delta: -24.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 153.48ms. Allocated memory is still 121.6MB. Free memory was 72.6MB in the beginning and 53.0MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * RCFGBuilder took 6437.82ms. Allocated memory was 121.6MB in the beginning and 172.0MB in the end (delta: 50.3MB). Free memory was 52.2MB in the beginning and 103.7MB in the end (delta: -51.4MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. * TraceAbstraction took 783.06ms. Allocated memory was 172.0MB in the beginning and 224.4MB in the end (delta: 52.4MB). Free memory was 103.7MB in the beginning and 92.5MB in the end (delta: 11.2MB). Peak memory consumption was 126.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:23:17,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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.M4-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 0d0faf19803047b9d51fb440293a8075aae4a757b1a8a36a5355760a1968a70e --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:23:19,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:23:19,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:23:19,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:23:19,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:23:19,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:23:19,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:23:19,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:23:19,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:23:19,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:23:19,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:23:19,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:23:19,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:23:19,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:23:19,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:23:19,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:23:19,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:23:19,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:23:19,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:23:19,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:23:19,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:23:19,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:23:19,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:23:19,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:23:19,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:23:19,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:23:19,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:23:19,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:23:19,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:23:19,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:23:19,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:23:19,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:23:19,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:23:19,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:23:19,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:23:19,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:23:19,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:23:19,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:23:19,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:23:19,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:23:19,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:23:19,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:23:19,660 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:23:19,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:23:19,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:23:19,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:23:19,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:23:19,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:23:19,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:23:19,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:23:19,663 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:23:19,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:23:19,664 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:23:19,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:23:19,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:23:19,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:23:19,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:23:19,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:23:19,665 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:23:19,665 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:23:19,665 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:23:19,665 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:23:19,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:23:19,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:23:19,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:23:19,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:23:19,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:23:19,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:23:19,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:23:19,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:23:19,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:23:19,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:23:19,667 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:23:19,667 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:23:19,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:23:19,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:23:19,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:23:19,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:23:19,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:23:19,668 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0faf19803047b9d51fb440293a8075aae4a757b1a8a36a5355760a1968a70e [2021-12-15 11:23:19,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:23:19,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:23:19,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:23:19,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:23:19,933 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:23:19,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2021-12-15 11:23:19,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5914120/5995696708a54f438388cf367aa4b377/FLAGadf79d5c5 [2021-12-15 11:23:20,395 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:23:20,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2021-12-15 11:23:20,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5914120/5995696708a54f438388cf367aa4b377/FLAGadf79d5c5 [2021-12-15 11:23:20,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5914120/5995696708a54f438388cf367aa4b377 [2021-12-15 11:23:20,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:23:20,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:23:20,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:23:20,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:23:20,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:23:20,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:23:20" (1/1) ... [2021-12-15 11:23:20,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7002ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:20, skipping insertion in model container [2021-12-15 11:23:20,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:23:20" (1/1) ... [2021-12-15 11:23:20,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:23:20,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:23:20,919 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.M4-1.c[1510,1523] [2021-12-15 11:23:21,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:23:21,290 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:23:21,299 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.M4-1.c[1510,1523] [2021-12-15 11:23:21,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:23:21,574 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:23:21,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21 WrapperNode [2021-12-15 11:23:21,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:23:21,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:23:21,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:23:21,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:23:21,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (1/1) ... [2021-12-15 11:23:21,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (1/1) ... [2021-12-15 11:23:21,866 INFO L137 Inliner]: procedures = 58, calls = 2046, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 3965 [2021-12-15 11:23:21,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:23:21,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:23:21,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:23:21,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:23:21,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (1/1) ... [2021-12-15 11:23:21,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (1/1) ... [2021-12-15 11:23:21,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (1/1) ... [2021-12-15 11:23:21,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (1/1) ... [2021-12-15 11:23:22,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (1/1) ... [2021-12-15 11:23:22,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (1/1) ... [2021-12-15 11:23:22,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (1/1) ... [2021-12-15 11:23:22,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:23:22,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:23:22,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:23:22,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:23:22,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (1/1) ... [2021-12-15 11:23:22,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:23:22,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:23:22,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:23:22,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:23:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:23:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-15 11:23:22,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-15 11:23:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 11:23:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-15 11:23:22,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-15 11:23:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 11:23:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-15 11:23:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-15 11:23:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-15 11:23:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-15 11:23:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 11:23:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-15 11:23:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-15 11:23:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-15 11:23:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-15 11:23:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-15 11:23:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-15 11:23:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-15 11:23:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-15 11:23:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-15 11:23:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-15 11:23:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-15 11:23:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 11:23:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 11:23:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-15 11:23:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-15 11:23:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-15 11:23:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-15 11:23:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:23:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-15 11:23:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-15 11:23:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 11:23:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 11:23:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:23:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:23:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-15 11:23:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-15 11:23:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-15 11:23:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-15 11:23:22,326 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-15 11:23:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-15 11:23:22,689 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:23:22,690 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:23:33,979 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:23:33,996 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:23:33,997 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:23:34,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:23:34 BoogieIcfgContainer [2021-12-15 11:23:34,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:23:34,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:23:34,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:23:34,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:23:34,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:23:20" (1/3) ... [2021-12-15 11:23:34,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee177c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:23:34, skipping insertion in model container [2021-12-15 11:23:34,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:23:21" (2/3) ... [2021-12-15 11:23:34,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee177c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:23:34, skipping insertion in model container [2021-12-15 11:23:34,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:23:34" (3/3) ... [2021-12-15 11:23:34,007 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-1.c [2021-12-15 11:23:34,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:23:34,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:23:34,068 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:23:34,075 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:23:34,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:23:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 1603 states, 972 states have (on average 1.228395061728395) internal successors, (1194), 977 states have internal predecessors, (1194), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 611 states have call predecessors, (613), 613 states have call successors, (613) [2021-12-15 11:23:34,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8483 [2021-12-15 11:23:34,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:23:34,819 INFO L514 BasicCegarLoop]: trace histogram [964, 964, 964, 108, 108, 108, 108, 108, 108, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:23:34,820 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:23:34,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:23:34,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1369427147, now seen corresponding path program 1 times [2021-12-15 11:23:34,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:23:34,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403705298] [2021-12-15 11:23:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:23:34,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:23:34,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:23:34,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:23:34,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:23:35,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 11:23:35,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:23:35,241 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:23:35,244 INFO L158 Benchmark]: Toolchain (without parser) took 14511.01ms. Allocated memory was 50.3MB in the beginning and 218.1MB in the end (delta: 167.8MB). Free memory was 24.6MB in the beginning and 64.1MB in the end (delta: -39.6MB). Peak memory consumption was 150.7MB. Max. memory is 16.1GB. [2021-12-15 11:23:35,245 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 31.3MB in the beginning and 31.3MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:23:35,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 840.99ms. Allocated memory was 50.3MB in the beginning and 73.4MB in the end (delta: 23.1MB). Free memory was 24.4MB in the beginning and 42.1MB in the end (delta: -17.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-12-15 11:23:35,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 289.96ms. Allocated memory is still 73.4MB. Free memory was 42.1MB in the beginning and 30.3MB in the end (delta: 11.8MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2021-12-15 11:23:35,246 INFO L158 Benchmark]: Boogie Preprocessor took 381.63ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 30.3MB in the beginning and 65.5MB in the end (delta: -35.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2021-12-15 11:23:35,246 INFO L158 Benchmark]: RCFGBuilder took 11749.62ms. Allocated memory was 113.2MB in the beginning and 167.8MB in the end (delta: 54.5MB). Free memory was 65.5MB in the beginning and 50.0MB in the end (delta: 15.5MB). Peak memory consumption was 83.8MB. Max. memory is 16.1GB. [2021-12-15 11:23:35,247 INFO L158 Benchmark]: TraceAbstraction took 1241.57ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 50.0MB in the beginning and 64.1MB in the end (delta: -14.1MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2021-12-15 11:23:35,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 31.3MB in the beginning and 31.3MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 840.99ms. Allocated memory was 50.3MB in the beginning and 73.4MB in the end (delta: 23.1MB). Free memory was 24.4MB in the beginning and 42.1MB in the end (delta: -17.7MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 289.96ms. Allocated memory is still 73.4MB. Free memory was 42.1MB in the beginning and 30.3MB in the end (delta: 11.8MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 381.63ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 30.3MB in the beginning and 65.5MB in the end (delta: -35.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * RCFGBuilder took 11749.62ms. Allocated memory was 113.2MB in the beginning and 167.8MB in the end (delta: 54.5MB). Free memory was 65.5MB in the beginning and 50.0MB in the end (delta: 15.5MB). Peak memory consumption was 83.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1241.57ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 50.0MB in the beginning and 64.1MB in the end (delta: -14.1MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:23:35,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable