./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_aso.2.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_aso.2.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 d66bda3f947b403f01c3d2c281ac384b241cf0bf9299658426cacf75877297a8 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:22:10,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:22:10,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:22:10,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:22:10,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:22:10,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:22:10,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:22:10,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:22:10,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:22:10,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:22:10,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:22:10,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:22:10,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:22:10,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:22:10,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:22:10,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:22:10,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:22:10,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:22:10,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:22:10,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:22:10,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:22:10,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:22:10,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:22:10,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:22:10,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:22:10,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:22:10,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:22:10,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:22:10,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:22:10,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:22:10,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:22:10,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:22:10,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:22:10,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:22:10,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:22:10,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:22:10,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:22:10,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:22:10,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:22:10,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:22:10,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:22:10,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:22:10,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:22:10,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:22:10,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:22:10,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:22:10,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:22:10,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:22:10,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:22:10,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:22:10,998 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:22:10,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:22:10,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:22:10,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:22:10,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:22:11,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:22:11,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:22:11,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:22:11,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:22:11,000 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:22:11,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:22:11,001 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:22:11,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:22:11,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:22:11,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:22:11,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:22:11,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:22:11,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:22:11,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:22:11,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:22:11,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:22:11,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:22:11,002 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:22:11,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:22:11,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:22:11,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:22:11,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d66bda3f947b403f01c3d2c281ac384b241cf0bf9299658426cacf75877297a8 [2021-12-15 11:22:11,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:22:11,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:22:11,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:22:11,292 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:22:11,293 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:22:11,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c [2021-12-15 11:22:11,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afd4d22e/f7e50ab88e5d4804b1d9eff0918c4d66/FLAG10e888bb3 [2021-12-15 11:22:11,863 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:22:11,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c [2021-12-15 11:22:11,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afd4d22e/f7e50ab88e5d4804b1d9eff0918c4d66/FLAG10e888bb3 [2021-12-15 11:22:12,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afd4d22e/f7e50ab88e5d4804b1d9eff0918c4d66 [2021-12-15 11:22:12,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:22:12,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:22:12,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:22:12,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:22:12,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:22:12,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:22:12" (1/1) ... [2021-12-15 11:22:12,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c5ac48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:12, skipping insertion in model container [2021-12-15 11:22:12,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:22:12" (1/1) ... [2021-12-15 11:22:12,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:22:12,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:22:12,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c[1974,1987] [2021-12-15 11:22:12,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:22:12,848 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:22:12,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c[1974,1987] [2021-12-15 11:22:13,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:22:13,139 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:22:13,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13 WrapperNode [2021-12-15 11:22:13,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:22:13,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:22:13,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:22:13,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:22:13,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (1/1) ... [2021-12-15 11:22:13,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (1/1) ... [2021-12-15 11:22:13,398 INFO L137 Inliner]: procedures = 61, calls = 3183, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 6054 [2021-12-15 11:22:13,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:22:13,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:22:13,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:22:13,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:22:13,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (1/1) ... [2021-12-15 11:22:13,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (1/1) ... [2021-12-15 11:22:13,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (1/1) ... [2021-12-15 11:22:13,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (1/1) ... [2021-12-15 11:22:13,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (1/1) ... [2021-12-15 11:22:13,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (1/1) ... [2021-12-15 11:22:13,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (1/1) ... [2021-12-15 11:22:13,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:22:13,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:22:13,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:22:13,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:22:13,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (1/1) ... [2021-12-15 11:22:13,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:22:13,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:22:13,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:22:13,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:22:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:22:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-12-15 11:22:13,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-12-15 11:22:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-15 11:22:13,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-15 11:22:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-15 11:22:13,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-15 11:22:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 11:22:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-15 11:22:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-15 11:22:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-15 11:22:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-15 11:22:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-15 11:22:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-15 11:22:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 11:22:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-15 11:22:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-15 11:22:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-15 11:22:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-15 11:22:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-12-15 11:22:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-12-15 11:22:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-15 11:22:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-15 11:22:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-15 11:22:13,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-15 11:22:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-15 11:22:13,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-15 11:22:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 11:22:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-15 11:22:13,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-15 11:22:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 11:22:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-15 11:22:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-15 11:22:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-15 11:22:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-15 11:22:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-12-15 11:22:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-12-15 11:22:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-15 11:22:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-15 11:22:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 11:22:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 11:22:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:22:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:22:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:22:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-15 11:22:13,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-15 11:22:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-15 11:22:13,724 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-15 11:22:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-15 11:22:13,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-15 11:22:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-12-15 11:22:13,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-12-15 11:22:14,236 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:22:14,238 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:22:26,865 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:22:26,886 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:22:26,886 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:22:26,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:26 BoogieIcfgContainer [2021-12-15 11:22:26,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:22:26,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:22:26,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:22:26,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:22:26,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:22:12" (1/3) ... [2021-12-15 11:22:26,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fc1f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:22:26, skipping insertion in model container [2021-12-15 11:22:26,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:13" (2/3) ... [2021-12-15 11:22:26,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fc1f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:22:26, skipping insertion in model container [2021-12-15 11:22:26,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:26" (3/3) ... [2021-12-15 11:22:26,899 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_aso.2.M4-1.c [2021-12-15 11:22:26,903 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:22:26,903 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:22:26,955 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:22:26,963 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:22:26,964 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:22:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 2377 states, 1385 states have (on average 1.2007220216606498) internal successors, (1663), 1389 states have internal predecessors, (1663), 968 states have call successors, (968), 22 states have call predecessors, (968), 22 states have return successors, (968), 966 states have call predecessors, (968), 968 states have call successors, (968) [2021-12-15 11:22:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1339 [2021-12-15 11:22:27,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:22:27,082 INFO L514 BasicCegarLoop]: trace histogram [209, 209, 209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:22:27,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:22:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:22:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash 244192876, now seen corresponding path program 1 times [2021-12-15 11:22:27,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:22:27,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788268714] [2021-12-15 11:22:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:22:27,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:22:27,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:22:27,165 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 11:22:27,174 INFO L158 Benchmark]: Toolchain (without parser) took 14840.12ms. Allocated memory was 102.8MB in the beginning and 318.8MB in the end (delta: 216.0MB). Free memory was 64.7MB in the beginning and 135.3MB in the end (delta: -70.5MB). Peak memory consumption was 147.9MB. Max. memory is 16.1GB. [2021-12-15 11:22:27,175 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 81.8MB. Free memory was 54.6MB in the beginning and 54.5MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:22:27,176 INFO L158 Benchmark]: CACSL2BoogieTranslator took 806.15ms. Allocated memory is still 102.8MB. Free memory was 64.5MB in the beginning and 40.8MB in the end (delta: 23.7MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2021-12-15 11:22:27,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 257.78ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 40.8MB in the beginning and 106.4MB in the end (delta: -65.6MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-12-15 11:22:27,177 INFO L158 Benchmark]: Boogie Preprocessor took 211.51ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 75.6MB in the end (delta: 30.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-12-15 11:22:27,181 INFO L158 Benchmark]: RCFGBuilder took 13278.94ms. Allocated memory was 159.4MB in the beginning and 318.8MB in the end (delta: 159.4MB). Free memory was 75.6MB in the beginning and 184.6MB in the end (delta: -109.0MB). Peak memory consumption was 113.1MB. Max. memory is 16.1GB. [2021-12-15 11:22:27,182 INFO L158 Benchmark]: TraceAbstraction took 279.85ms. Allocated memory is still 318.8MB. Free memory was 184.6MB in the beginning and 135.3MB in the end (delta: 49.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2021-12-15 11:22:27,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 81.8MB. Free memory was 54.6MB in the beginning and 54.5MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 806.15ms. Allocated memory is still 102.8MB. Free memory was 64.5MB in the beginning and 40.8MB in the end (delta: 23.7MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 257.78ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 40.8MB in the beginning and 106.4MB in the end (delta: -65.6MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 211.51ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 75.6MB in the end (delta: 30.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * RCFGBuilder took 13278.94ms. Allocated memory was 159.4MB in the beginning and 318.8MB in the end (delta: 159.4MB). Free memory was 75.6MB in the beginning and 184.6MB in the end (delta: -109.0MB). Peak memory consumption was 113.1MB. Max. memory is 16.1GB. * TraceAbstraction took 279.85ms. Allocated memory is still 318.8MB. Free memory was 184.6MB in the beginning and 135.3MB in the end (delta: 49.3MB). Peak memory consumption was 50.3MB. 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 11:22:27,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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_aso.2.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 d66bda3f947b403f01c3d2c281ac384b241cf0bf9299658426cacf75877297a8 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:22:29,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:22:29,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:22:29,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:22:29,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:22:29,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:22:29,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:22:29,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:22:29,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:22:29,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:22:29,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:22:29,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:22:29,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:22:29,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:22:29,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:22:29,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:22:29,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:22:29,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:22:29,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:22:29,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:22:29,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:22:29,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:22:29,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:22:29,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:22:29,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:22:29,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:22:29,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:22:29,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:22:29,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:22:29,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:22:29,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:22:29,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:22:29,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:22:29,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:22:29,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:22:29,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:22:29,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:22:29,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:22:29,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:22:29,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:22:29,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:22:29,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:22:29,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:22:29,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:22:29,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:22:29,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:22:29,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:22:29,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:22:29,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:22:29,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:22:29,328 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:22:29,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:22:29,329 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:22:29,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:22:29,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:22:29,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:22:29,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:22:29,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:22:29,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:22:29,329 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:22:29,329 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:22:29,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:22:29,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:22:29,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:22:29,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:22:29,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:22:29,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:22:29,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:22:29,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:22:29,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:22:29,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:22:29,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:22:29,331 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:22:29,331 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:22:29,331 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:22:29,331 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:22:29,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:22:29,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:22:29,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:22:29,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d66bda3f947b403f01c3d2c281ac384b241cf0bf9299658426cacf75877297a8 [2021-12-15 11:22:29,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:22:29,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:22:29,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:22:29,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:22:29,709 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:22:29,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c [2021-12-15 11:22:29,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a0942c1/8ffa249e1f58468eb1404ef76dba8252/FLAGb223f53fd [2021-12-15 11:22:30,449 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:22:30,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c [2021-12-15 11:22:30,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a0942c1/8ffa249e1f58468eb1404ef76dba8252/FLAGb223f53fd [2021-12-15 11:22:30,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a0942c1/8ffa249e1f58468eb1404ef76dba8252 [2021-12-15 11:22:30,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:22:30,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:22:30,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:22:30,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:22:30,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:22:30,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:22:30" (1/1) ... [2021-12-15 11:22:30,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea1aadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:30, skipping insertion in model container [2021-12-15 11:22:30,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:22:30" (1/1) ... [2021-12-15 11:22:30,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:22:30,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:22:31,021 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c[1974,1987] [2021-12-15 11:22:31,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:22:31,444 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:22:31,453 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M4-1.c[1974,1987] [2021-12-15 11:22:31,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:22:31,674 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:22:31,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31 WrapperNode [2021-12-15 11:22:31,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:22:31,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:22:31,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:22:31,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:22:31,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (1/1) ... [2021-12-15 11:22:31,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (1/1) ... [2021-12-15 11:22:31,931 INFO L137 Inliner]: procedures = 64, calls = 3183, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5993 [2021-12-15 11:22:31,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:22:31,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:22:31,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:22:31,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:22:31,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (1/1) ... [2021-12-15 11:22:31,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (1/1) ... [2021-12-15 11:22:32,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (1/1) ... [2021-12-15 11:22:32,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (1/1) ... [2021-12-15 11:22:32,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (1/1) ... [2021-12-15 11:22:32,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (1/1) ... [2021-12-15 11:22:32,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (1/1) ... [2021-12-15 11:22:32,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:22:32,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:22:32,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:22:32,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:22:32,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (1/1) ... [2021-12-15 11:22:32,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:22:32,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:22:32,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:22:32,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:22:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:22:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-12-15 11:22:32,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-12-15 11:22:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-15 11:22:32,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-15 11:22:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 11:22:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-15 11:22:32,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-15 11:22:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 11:22:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-15 11:22:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-15 11:22:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-15 11:22:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-15 11:22:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 11:22:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-15 11:22:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-15 11:22:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-15 11:22:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-15 11:22:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-15 11:22:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-15 11:22:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-12-15 11:22:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-12-15 11:22:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-15 11:22:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-15 11:22:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-15 11:22:32,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-15 11:22:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-15 11:22:32,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-15 11:22:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-15 11:22:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 11:22:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 11:22:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-15 11:22:32,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-15 11:22:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:22:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-15 11:22:32,318 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-15 11:22:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-15 11:22:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-15 11:22:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-12-15 11:22:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-12-15 11:22:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-15 11:22:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-15 11:22:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 11:22:32,320 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 11:22:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:22:32,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:22:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-15 11:22:32,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-15 11:22:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-15 11:22:32,321 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-15 11:22:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-15 11:22:32,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-15 11:22:32,322 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-12-15 11:22:32,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-12-15 11:22:32,771 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:22:32,773 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:22:49,764 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:22:49,791 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:22:49,792 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:22:49,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:49 BoogieIcfgContainer [2021-12-15 11:22:49,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:22:49,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:22:49,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:22:49,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:22:49,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:22:30" (1/3) ... [2021-12-15 11:22:49,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b941010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:22:49, skipping insertion in model container [2021-12-15 11:22:49,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:31" (2/3) ... [2021-12-15 11:22:49,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b941010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:22:49, skipping insertion in model container [2021-12-15 11:22:49,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:49" (3/3) ... [2021-12-15 11:22:49,801 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_aso.2.M4-1.c [2021-12-15 11:22:49,804 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:22:49,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:22:49,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:22:49,887 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:22:49,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:22:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 2377 states, 1385 states have (on average 1.2007220216606498) internal successors, (1663), 1389 states have internal predecessors, (1663), 968 states have call successors, (968), 22 states have call predecessors, (968), 22 states have return successors, (968), 966 states have call predecessors, (968), 968 states have call successors, (968) [2021-12-15 11:22:50,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1339 [2021-12-15 11:22:50,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:22:50,119 INFO L514 BasicCegarLoop]: trace histogram [209, 209, 209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:22:50,120 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:22:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:22:50,126 INFO L85 PathProgramCache]: Analyzing trace with hash 244192876, now seen corresponding path program 1 times [2021-12-15 11:22:50,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:22:50,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216046392] [2021-12-15 11:22:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:22:50,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:22:50,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:22:50,146 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 11:22:50,148 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 11:22:50,448 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 11:22:50,648 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 11:22:50,651 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 11:22:50,656 INFO L158 Benchmark]: Toolchain (without parser) took 19844.87ms. Allocated memory was 73.4MB in the beginning and 375.4MB in the end (delta: 302.0MB). Free memory was 50.8MB in the beginning and 245.2MB in the end (delta: -194.5MB). Peak memory consumption was 269.2MB. Max. memory is 16.1GB. [2021-12-15 11:22:50,656 INFO L158 Benchmark]: CDTParser took 1.11ms. Allocated memory is still 73.4MB. Free memory was 54.2MB in the beginning and 54.1MB in the end (delta: 50.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:22:50,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 861.89ms. Allocated memory was 73.4MB in the beginning and 115.3MB in the end (delta: 41.9MB). Free memory was 50.5MB in the beginning and 71.1MB in the end (delta: -20.6MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2021-12-15 11:22:50,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 256.29ms. Allocated memory is still 115.3MB. Free memory was 71.1MB in the beginning and 60.3MB in the end (delta: 10.8MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2021-12-15 11:22:50,658 INFO L158 Benchmark]: Boogie Preprocessor took 306.92ms. Allocated memory was 115.3MB in the beginning and 222.3MB in the end (delta: 107.0MB). Free memory was 60.3MB in the beginning and 157.8MB in the end (delta: -97.6MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2021-12-15 11:22:50,659 INFO L158 Benchmark]: RCFGBuilder took 17554.92ms. Allocated memory was 222.3MB in the beginning and 375.4MB in the end (delta: 153.1MB). Free memory was 157.8MB in the beginning and 119.7MB in the end (delta: 38.2MB). Peak memory consumption was 194.4MB. Max. memory is 16.1GB. [2021-12-15 11:22:50,659 INFO L158 Benchmark]: TraceAbstraction took 858.32ms. Allocated memory is still 375.4MB. Free memory was 118.6MB in the beginning and 245.2MB in the end (delta: -126.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-12-15 11:22:50,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11ms. Allocated memory is still 73.4MB. Free memory was 54.2MB in the beginning and 54.1MB in the end (delta: 50.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 861.89ms. Allocated memory was 73.4MB in the beginning and 115.3MB in the end (delta: 41.9MB). Free memory was 50.5MB in the beginning and 71.1MB in the end (delta: -20.6MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 256.29ms. Allocated memory is still 115.3MB. Free memory was 71.1MB in the beginning and 60.3MB in the end (delta: 10.8MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 306.92ms. Allocated memory was 115.3MB in the beginning and 222.3MB in the end (delta: 107.0MB). Free memory was 60.3MB in the beginning and 157.8MB in the end (delta: -97.6MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * RCFGBuilder took 17554.92ms. Allocated memory was 222.3MB in the beginning and 375.4MB in the end (delta: 153.1MB). Free memory was 157.8MB in the beginning and 119.7MB in the end (delta: 38.2MB). Peak memory consumption was 194.4MB. Max. memory is 16.1GB. * TraceAbstraction took 858.32ms. Allocated memory is still 375.4MB. Free memory was 118.6MB in the beginning and 245.2MB in the end (delta: -126.6MB). Peak memory consumption was 35.7MB. 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 11:22:50,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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