./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.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/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:15:59,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:15:59,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:15:59,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:15:59,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:15:59,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:15:59,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:15:59,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:15:59,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:15:59,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:15:59,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:15:59,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:15:59,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:15:59,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:15:59,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:15:59,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:15:59,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:15:59,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:15:59,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:15:59,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:15:59,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:15:59,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:15:59,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:15:59,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:15:59,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:15:59,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:15:59,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:15:59,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:15:59,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:15:59,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:15:59,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:15:59,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:15:59,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:15:59,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:15:59,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:15:59,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:15:59,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:15:59,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:15:59,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:15:59,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:15:59,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:15:59,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:15:59,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:15:59,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:15:59,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:15:59,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:15:59,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:15:59,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:15:59,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:15:59,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:15:59,881 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:15:59,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:15:59,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:15:59,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:15:59,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:15:59,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:15:59,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:15:59,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:15:59,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:15:59,882 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:15:59,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:15:59,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:15:59,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:15:59,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:15:59,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:15:59,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:15:59,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:15:59,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:15:59,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:15:59,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:15:59,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:15:59,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:15:59,885 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:15:59,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:15:59,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:15:59,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:15:59,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af [2021-12-15 12:16:00,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:16:00,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:16:00,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:16:00,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:16:00,052 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:16:00,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-15 12:16:00,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/357f57cd6/84fbcdb7fa65462397c404c6a0724f7e/FLAG7f61a5eb2 [2021-12-15 12:16:00,511 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:16:00,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-15 12:16:00,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/357f57cd6/84fbcdb7fa65462397c404c6a0724f7e/FLAG7f61a5eb2 [2021-12-15 12:16:00,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/357f57cd6/84fbcdb7fa65462397c404c6a0724f7e [2021-12-15 12:16:00,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:16:00,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:16:00,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:00,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:16:00,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:16:00,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:00,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1b025c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00, skipping insertion in model container [2021-12-15 12:16:00,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:00,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:16:00,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:16:00,716 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/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[911,924] [2021-12-15 12:16:00,768 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/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[8416,8429] [2021-12-15 12:16:00,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:00,838 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:16:00,847 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/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[911,924] [2021-12-15 12:16:00,869 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/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[8416,8429] [2021-12-15 12:16:00,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:00,915 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:16:00,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00 WrapperNode [2021-12-15 12:16:00,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:00,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:00,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:16:00,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:16:00,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:00,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:00,962 INFO L137 Inliner]: procedures = 69, calls = 83, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 793 [2021-12-15 12:16:00,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:00,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:16:00,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:16:00,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:16:00,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:00,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:00,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:00,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:00,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:01,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:01,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:01,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:16:01,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:16:01,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:16:01,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:16:01,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (1/1) ... [2021-12-15 12:16:01,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:01,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:16:01,091 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 12:16:01,097 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 12:16:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:16:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 12:16:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 12:16:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-15 12:16:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-15 12:16:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-15 12:16:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-15 12:16:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-15 12:16:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-15 12:16:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-15 12:16:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-15 12:16:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-15 12:16:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-15 12:16:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-15 12:16:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-15 12:16:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-15 12:16:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-15 12:16:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-15 12:16:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-15 12:16:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-15 12:16:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-15 12:16:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-15 12:16:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-15 12:16:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:16:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-15 12:16:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-15 12:16:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-15 12:16:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-15 12:16:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:16:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:16:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-15 12:16:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-15 12:16:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-15 12:16:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-15 12:16:01,326 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:16:01,327 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:16:01,696 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-12-15 12:16:01,697 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2021-12-15 12:16:01,740 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:16:01,747 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:16:01,748 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-15 12:16:01,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:01 BoogieIcfgContainer [2021-12-15 12:16:01,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:16:01,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:16:01,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:16:01,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:16:01,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:16:00" (1/3) ... [2021-12-15 12:16:01,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2722d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:01, skipping insertion in model container [2021-12-15 12:16:01,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:00" (2/3) ... [2021-12-15 12:16:01,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2722d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:01, skipping insertion in model container [2021-12-15 12:16:01,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:01" (3/3) ... [2021-12-15 12:16:01,755 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-15 12:16:01,759 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:16:01,759 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:16:01,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:16:01,794 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 12:16:01,794 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:16:01,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 333 states have internal predecessors, (526), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-15 12:16:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 12:16:01,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:16:01,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:01,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:16:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:16:01,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1097425506, now seen corresponding path program 1 times [2021-12-15 12:16:01,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:16:01,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779381308] [2021-12-15 12:16:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:16:01,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:16:01,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:16:01,903 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 12:16:01,907 INFO L158 Benchmark]: Toolchain (without parser) took 1372.45ms. Allocated memory is still 134.2MB. Free memory was 104.5MB in the beginning and 102.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2021-12-15 12:16:01,907 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:01,908 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.11ms. Allocated memory is still 134.2MB. Free memory was 104.0MB in the beginning and 101.0MB in the end (delta: 3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:16:01,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.97ms. Allocated memory is still 134.2MB. Free memory was 101.0MB in the beginning and 96.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:01,909 INFO L158 Benchmark]: Boogie Preprocessor took 78.28ms. Allocated memory is still 134.2MB. Free memory was 96.9MB in the beginning and 93.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:16:01,909 INFO L158 Benchmark]: RCFGBuilder took 708.13ms. Allocated memory is still 134.2MB. Free memory was 93.8MB in the beginning and 56.0MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2021-12-15 12:16:01,909 INFO L158 Benchmark]: TraceAbstraction took 154.60ms. Allocated memory is still 134.2MB. Free memory was 55.5MB in the beginning and 102.9MB in the end (delta: -47.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:01,911 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 83.9MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.11ms. Allocated memory is still 134.2MB. Free memory was 104.0MB in the beginning and 101.0MB in the end (delta: 3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.97ms. Allocated memory is still 134.2MB. Free memory was 101.0MB in the beginning and 96.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.28ms. Allocated memory is still 134.2MB. Free memory was 96.9MB in the beginning and 93.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 708.13ms. Allocated memory is still 134.2MB. Free memory was 93.8MB in the beginning and 56.0MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 154.60ms. Allocated memory is still 134.2MB. Free memory was 55.5MB in the beginning and 102.9MB in the end (delta: -47.4MB). There was no memory consumed. 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 12:16:01,941 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/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.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 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:16:04,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:16:04,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:16:04,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:16:04,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:16:04,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:16:04,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:16:04,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:16:04,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:16:04,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:16:04,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:16:04,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:16:04,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:16:04,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:16:04,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:16:04,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:16:04,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:16:04,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:16:04,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:16:04,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:16:04,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:16:04,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:16:04,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:16:04,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:16:04,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:16:04,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:16:04,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:16:04,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:16:04,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:16:04,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:16:04,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:16:04,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:16:04,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:16:04,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:16:04,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:16:04,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:16:04,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:16:04,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:16:04,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:16:04,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:16:04,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:16:04,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:16:04,126 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:16:04,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:16:04,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:16:04,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:16:04,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:16:04,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:16:04,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:16:04,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:16:04,129 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:16:04,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:16:04,130 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:16:04,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:16:04,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:16:04,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:16:04,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:16:04,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:16:04,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:16:04,131 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:16:04,131 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:16:04,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:16:04,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:16:04,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:16:04,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:16:04,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:16:04,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:16:04,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:16:04,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:04,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:16:04,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:16:04,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:16:04,133 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:16:04,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:16:04,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:16:04,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:16:04,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:16:04,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:16:04,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:16:04,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af [2021-12-15 12:16:04,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:16:04,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:16:04,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:16:04,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:16:04,424 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:16:04,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-15 12:16:04,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c75967b2/ed6db1335cd942ab86a46a28bb561348/FLAG05955cecc [2021-12-15 12:16:04,922 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:16:04,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-15 12:16:04,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c75967b2/ed6db1335cd942ab86a46a28bb561348/FLAG05955cecc [2021-12-15 12:16:04,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c75967b2/ed6db1335cd942ab86a46a28bb561348 [2021-12-15 12:16:04,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:16:04,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:16:04,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:04,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:16:04,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:16:04,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:04" (1/1) ... [2021-12-15 12:16:04,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afcddba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:04, skipping insertion in model container [2021-12-15 12:16:04,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:04" (1/1) ... [2021-12-15 12:16:04,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:16:05,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:16:05,245 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/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[911,924] [2021-12-15 12:16:05,331 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/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[8416,8429] [2021-12-15 12:16:05,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:05,418 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:16:05,437 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/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[911,924] [2021-12-15 12:16:05,469 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/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[8416,8429] [2021-12-15 12:16:05,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:05,522 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:16:05,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05 WrapperNode [2021-12-15 12:16:05,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:05,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:05,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:16:05,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:16:05,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (1/1) ... [2021-12-15 12:16:05,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (1/1) ... [2021-12-15 12:16:05,593 INFO L137 Inliner]: procedures = 70, calls = 83, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 762 [2021-12-15 12:16:05,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:05,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:16:05,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:16:05,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:16:05,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (1/1) ... [2021-12-15 12:16:05,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (1/1) ... [2021-12-15 12:16:05,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (1/1) ... [2021-12-15 12:16:05,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (1/1) ... [2021-12-15 12:16:05,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (1/1) ... [2021-12-15 12:16:05,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (1/1) ... [2021-12-15 12:16:05,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (1/1) ... [2021-12-15 12:16:05,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:16:05,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:16:05,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:16:05,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:16:05,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (1/1) ... [2021-12-15 12:16:05,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:05,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:16:05,704 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 12:16:05,706 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 12:16:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:16:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 12:16:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 12:16:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-15 12:16:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-15 12:16:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-15 12:16:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-15 12:16:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-15 12:16:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-15 12:16:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-15 12:16:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-15 12:16:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-15 12:16:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-15 12:16:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-15 12:16:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-15 12:16:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-15 12:16:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-15 12:16:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:16:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-15 12:16:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-15 12:16:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-15 12:16:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-15 12:16:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-15 12:16:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-15 12:16:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-15 12:16:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-15 12:16:05,731 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-15 12:16:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-15 12:16:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:16:05,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:16:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-15 12:16:05,732 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-15 12:16:05,732 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-15 12:16:05,732 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-15 12:16:05,806 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:16:05,807 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:16:06,295 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2021-12-15 12:16:06,296 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2021-12-15 12:16:06,394 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:16:06,402 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:16:06,402 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-15 12:16:06,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:06 BoogieIcfgContainer [2021-12-15 12:16:06,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:16:06,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:16:06,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:16:06,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:16:06,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:16:04" (1/3) ... [2021-12-15 12:16:06,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655f3b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:06, skipping insertion in model container [2021-12-15 12:16:06,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:05" (2/3) ... [2021-12-15 12:16:06,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655f3b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:06, skipping insertion in model container [2021-12-15 12:16:06,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:06" (3/3) ... [2021-12-15 12:16:06,409 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-15 12:16:06,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:16:06,413 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:16:06,484 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:16:06,489 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 12:16:06,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:16:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 333 states have internal predecessors, (526), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-15 12:16:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 12:16:06,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:16:06,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:06,548 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:16:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:16:06,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1097425506, now seen corresponding path program 1 times [2021-12-15 12:16:06,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 12:16:06,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339644912] [2021-12-15 12:16:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:16:06,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 12:16:06,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 12:16:06,567 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 12:16:06,571 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 12:16:06,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 12:16:06,831 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 12:16:06,832 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 12:16:06,835 INFO L158 Benchmark]: Toolchain (without parser) took 1876.30ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.5MB in the beginning and 30.2MB in the end (delta: -7.7MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-12-15 12:16:06,836 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 48.2MB. Free memory was 30.2MB in the beginning and 30.1MB in the end (delta: 45.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:06,836 INFO L158 Benchmark]: CACSL2BoogieTranslator took 563.45ms. Allocated memory is still 48.2MB. Free memory was 22.3MB in the beginning and 21.5MB in the end (delta: 814.1kB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-12-15 12:16:06,836 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.35ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 21.5MB in the beginning and 41.9MB in the end (delta: -20.4MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2021-12-15 12:16:06,837 INFO L158 Benchmark]: Boogie Preprocessor took 53.69ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 38.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:06,837 INFO L158 Benchmark]: RCFGBuilder took 737.34ms. Allocated memory is still 60.8MB. Free memory was 38.0MB in the beginning and 27.4MB in the end (delta: 10.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:06,838 INFO L158 Benchmark]: TraceAbstraction took 428.60ms. Allocated memory is still 60.8MB. Free memory was 26.9MB in the beginning and 30.2MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:06,840 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 48.2MB. Free memory was 30.2MB in the beginning and 30.1MB in the end (delta: 45.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 563.45ms. Allocated memory is still 48.2MB. Free memory was 22.3MB in the beginning and 21.5MB in the end (delta: 814.1kB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.35ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 21.5MB in the beginning and 41.9MB in the end (delta: -20.4MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.69ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 38.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 737.34ms. Allocated memory is still 60.8MB. Free memory was 38.0MB in the beginning and 27.4MB in the end (delta: 10.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * TraceAbstraction took 428.60ms. Allocated memory is still 60.8MB. Free memory was 26.9MB in the beginning and 30.2MB in the end (delta: -3.3MB). There was no memory consumed. 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 12:16:06,872 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