./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.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.15.cil.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 af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:16:09,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:16:09,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:16:09,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:16:09,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:16:09,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:16:09,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:16:09,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:16:09,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:16:09,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:16:09,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:16:09,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:16:09,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:16:09,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:16:09,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:16:09,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:16:09,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:16:09,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:16:09,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:16:09,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:16:09,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:16:09,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:16:09,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:16:09,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:16:09,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:16:09,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:16:09,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:16:09,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:16:09,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:16:09,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:16:09,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:16:09,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:16:09,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:16:09,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:16:09,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:16:09,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:16:09,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:16:09,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:16:09,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:16:09,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:16:09,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:16:09,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:16:09,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:16:09,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:16:09,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:16:09,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:16:09,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:16:09,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:16:09,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:16:09,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:16:09,837 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:16:09,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:16:09,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:16:09,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:16:09,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:16:09,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:16:09,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:16:09,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:16:09,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:16:09,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:16:09,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:16:09,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:16:09,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:16:09,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:16:09,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:16:09,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:16:09,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:09,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:16:09,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:16:09,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:16:09,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:16:09,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:16:09,840 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:16:09,841 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:16:09,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:16:09,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:16:09,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 [2021-12-15 12:16:10,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:16:10,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:16:10,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:16:10,039 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:16:10,039 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:16:10,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2021-12-15 12:16:10,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3bfebe2/2f175c28ed3649acb76578d0808773be/FLAGcdbb172b6 [2021-12-15 12:16:10,540 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:16:10,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2021-12-15 12:16:10,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3bfebe2/2f175c28ed3649acb76578d0808773be/FLAGcdbb172b6 [2021-12-15 12:16:10,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3bfebe2/2f175c28ed3649acb76578d0808773be [2021-12-15 12:16:10,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:16:10,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:16:10,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:10,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:16:10,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:16:10,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:10" (1/1) ... [2021-12-15 12:16:10,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba200bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:10, skipping insertion in model container [2021-12-15 12:16:10,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:10" (1/1) ... [2021-12-15 12:16:10,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:16:10,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:16:11,116 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.15.cil.c[911,924] [2021-12-15 12:16:11,207 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.15.cil.c[8416,8429] [2021-12-15 12:16:11,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:11,401 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:16:11,410 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.15.cil.c[911,924] [2021-12-15 12:16:11,438 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.15.cil.c[8416,8429] [2021-12-15 12:16:11,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:11,526 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:16:11,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11 WrapperNode [2021-12-15 12:16:11,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:11,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:11,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:16:11,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:16:11,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (1/1) ... [2021-12-15 12:16:11,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (1/1) ... [2021-12-15 12:16:11,591 INFO L137 Inliner]: procedures = 81, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1139 [2021-12-15 12:16:11,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:11,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:16:11,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:16:11,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:16:11,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (1/1) ... [2021-12-15 12:16:11,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (1/1) ... [2021-12-15 12:16:11,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (1/1) ... [2021-12-15 12:16:11,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (1/1) ... [2021-12-15 12:16:11,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (1/1) ... [2021-12-15 12:16:11,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (1/1) ... [2021-12-15 12:16:11,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (1/1) ... [2021-12-15 12:16:11,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:16:11,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:16:11,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:16:11,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:16:11,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (1/1) ... [2021-12-15 12:16:11,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:11,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:16:11,748 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 12:16:11,767 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 12:16:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:16:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 12:16:11,784 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 12:16:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-15 12:16:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-15 12:16:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-15 12:16:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-15 12:16:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-15 12:16:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-15 12:16:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-15 12:16:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-15 12:16:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-15 12:16:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-15 12:16:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-15 12:16:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-15 12:16:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-15 12:16:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-15 12:16:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-15 12:16:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-15 12:16:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-15 12:16:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-15 12:16:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-15 12:16:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-15 12:16:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:16:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-15 12:16:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-15 12:16:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-15 12:16:11,788 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-15 12:16:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:16:11,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:16:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-15 12:16:11,788 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-15 12:16:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-15 12:16:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-15 12:16:11,939 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:16:11,946 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:16:12,568 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-12-15 12:16:12,568 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 12:16:12,626 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:16:12,638 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:16:12,639 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-12-15 12:16:12,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:12 BoogieIcfgContainer [2021-12-15 12:16:12,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:16:12,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:16:12,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:16:12,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:16:12,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:16:10" (1/3) ... [2021-12-15 12:16:12,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3c92bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:12, skipping insertion in model container [2021-12-15 12:16:12,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:11" (2/3) ... [2021-12-15 12:16:12,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3c92bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:12, skipping insertion in model container [2021-12-15 12:16:12,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:12" (3/3) ... [2021-12-15 12:16:12,648 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.15.cil.c [2021-12-15 12:16:12,651 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:16:12,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:16:12,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:16:12,702 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 12:16:12,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:16:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 467 states have (on average 1.6445396145610278) internal successors, (768), 475 states have internal predecessors, (768), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-15 12:16:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 12:16:12,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:16:12,741 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 12:16:12,742 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:16:12,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:16:12,745 INFO L85 PathProgramCache]: Analyzing trace with hash -103676450, now seen corresponding path program 1 times [2021-12-15 12:16:12,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:16:12,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315147440] [2021-12-15 12:16:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:16:12,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:16:12,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:16:12,790 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 12:16:12,794 INFO L158 Benchmark]: Toolchain (without parser) took 1890.59ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 80.4MB in the beginning and 87.4MB in the end (delta: -7.0MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2021-12-15 12:16:12,794 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:12,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 621.03ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 80.1MB in the beginning and 114.4MB in the end (delta: -34.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-15 12:16:12,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.82ms. Allocated memory is still 155.2MB. Free memory was 114.4MB in the beginning and 109.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 12:16:12,796 INFO L158 Benchmark]: Boogie Preprocessor took 61.65ms. Allocated memory is still 155.2MB. Free memory was 109.1MB in the beginning and 104.4MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:12,796 INFO L158 Benchmark]: RCFGBuilder took 986.91ms. Allocated memory is still 155.2MB. Free memory was 104.4MB in the beginning and 100.0MB in the end (delta: 4.4MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2021-12-15 12:16:12,797 INFO L158 Benchmark]: TraceAbstraction took 150.53ms. Allocated memory is still 155.2MB. Free memory was 99.4MB in the beginning and 87.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:16:12,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 621.03ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 80.1MB in the beginning and 114.4MB in the end (delta: -34.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.82ms. Allocated memory is still 155.2MB. Free memory was 114.4MB in the beginning and 109.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.65ms. Allocated memory is still 155.2MB. Free memory was 109.1MB in the beginning and 104.4MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 986.91ms. Allocated memory is still 155.2MB. Free memory was 104.4MB in the beginning and 100.0MB in the end (delta: 4.4MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * TraceAbstraction took 150.53ms. Allocated memory is still 155.2MB. Free memory was 99.4MB in the beginning and 87.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:16:12,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.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 af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:16:14,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:16:14,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:16:14,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:16:14,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:16:14,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:16:14,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:16:14,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:16:14,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:16:14,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:16:14,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:16:14,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:16:14,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:16:14,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:16:14,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:16:14,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:16:14,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:16:14,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:16:14,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:16:14,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:16:14,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:16:15,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:16:15,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:16:15,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:16:15,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:16:15,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:16:15,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:16:15,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:16:15,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:16:15,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:16:15,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:16:15,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:16:15,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:16:15,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:16:15,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:16:15,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:16:15,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:16:15,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:16:15,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:16:15,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:16:15,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:16:15,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:16:15,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:16:15,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:16:15,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:16:15,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:16:15,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:16:15,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:16:15,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:16:15,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:16:15,065 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:16:15,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:16:15,066 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:16:15,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:16:15,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:16:15,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:16:15,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:16:15,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:16:15,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:16:15,071 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:16:15,071 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:16:15,071 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:16:15,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:16:15,072 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:16:15,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:16:15,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:16:15,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:16:15,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:16:15,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:15,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:16:15,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:16:15,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:16:15,072 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:16:15,073 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:16:15,073 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:16:15,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:16:15,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:16:15,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:16:15,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:16:15,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 [2021-12-15 12:16:15,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:16:15,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:16:15,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:16:15,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:16:15,348 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:16:15,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2021-12-15 12:16:15,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9ddc726/c6a48c9a578541c89e96758b929902df/FLAGc620e0b76 [2021-12-15 12:16:15,842 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:16:15,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2021-12-15 12:16:15,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9ddc726/c6a48c9a578541c89e96758b929902df/FLAGc620e0b76 [2021-12-15 12:16:15,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9ddc726/c6a48c9a578541c89e96758b929902df [2021-12-15 12:16:15,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:16:15,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:16:15,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:15,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:16:15,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:16:15,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:15" (1/1) ... [2021-12-15 12:16:15,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db18c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:15, skipping insertion in model container [2021-12-15 12:16:15,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:15" (1/1) ... [2021-12-15 12:16:15,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:16:15,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:16:16,058 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.15.cil.c[911,924] [2021-12-15 12:16:16,116 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.15.cil.c[8416,8429] [2021-12-15 12:16:16,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:16,254 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:16:16,262 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.15.cil.c[911,924] [2021-12-15 12:16:16,289 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.15.cil.c[8416,8429] [2021-12-15 12:16:16,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:16,355 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:16:16,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16 WrapperNode [2021-12-15 12:16:16,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:16,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:16,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:16:16,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:16:16,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (1/1) ... [2021-12-15 12:16:16,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (1/1) ... [2021-12-15 12:16:16,413 INFO L137 Inliner]: procedures = 82, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1096 [2021-12-15 12:16:16,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:16,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:16:16,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:16:16,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:16:16,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (1/1) ... [2021-12-15 12:16:16,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (1/1) ... [2021-12-15 12:16:16,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (1/1) ... [2021-12-15 12:16:16,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (1/1) ... [2021-12-15 12:16:16,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (1/1) ... [2021-12-15 12:16:16,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (1/1) ... [2021-12-15 12:16:16,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (1/1) ... [2021-12-15 12:16:16,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:16:16,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:16:16,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:16:16,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:16:16,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (1/1) ... [2021-12-15 12:16:16,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:16,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:16:16,573 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 12:16:16,592 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 12:16:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:16:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 12:16:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 12:16:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-15 12:16:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-15 12:16:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-15 12:16:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-15 12:16:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-15 12:16:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-15 12:16:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-15 12:16:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-15 12:16:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-15 12:16:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-15 12:16:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-15 12:16:16,620 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-15 12:16:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-15 12:16:16,620 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-15 12:16:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:16:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-15 12:16:16,620 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-15 12:16:16,620 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-15 12:16:16,620 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-15 12:16:16,621 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-15 12:16:16,621 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-15 12:16:16,621 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-15 12:16:16,621 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-15 12:16:16,621 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-15 12:16:16,621 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-15 12:16:16,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:16:16,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:16:16,622 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-15 12:16:16,622 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-15 12:16:16,622 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-15 12:16:16,622 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-15 12:16:16,767 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:16:16,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:16:17,535 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2021-12-15 12:16:17,535 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 12:16:17,592 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:16:17,601 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:16:17,602 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-12-15 12:16:17,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:17 BoogieIcfgContainer [2021-12-15 12:16:17,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:16:17,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:16:17,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:16:17,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:16:17,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:16:15" (1/3) ... [2021-12-15 12:16:17,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22421b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:17, skipping insertion in model container [2021-12-15 12:16:17,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:16" (2/3) ... [2021-12-15 12:16:17,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22421b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:17, skipping insertion in model container [2021-12-15 12:16:17,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:17" (3/3) ... [2021-12-15 12:16:17,624 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.15.cil.c [2021-12-15 12:16:17,628 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:16:17,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:16:17,660 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:16:17,665 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 12:16:17,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:16:17,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 467 states have (on average 1.6445396145610278) internal successors, (768), 475 states have internal predecessors, (768), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-15 12:16:17,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 12:16:17,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:16:17,703 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 12:16:17,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:16:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:16:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash -103676450, now seen corresponding path program 1 times [2021-12-15 12:16:17,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 12:16:17,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313004351] [2021-12-15 12:16:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:16:17,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 12:16:17,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 12:16:17,718 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 12:16:17,723 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 12:16:17,789 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 12:16:17,989 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 12:16:17,989 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 12:16:17,993 INFO L158 Benchmark]: Toolchain (without parser) took 2099.01ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 36.1MB in the beginning and 42.6MB in the end (delta: -6.5MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-12-15 12:16:17,994 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 44.0MB. Free memory was 26.4MB in the beginning and 26.3MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:17,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.98ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 27.9MB in the end (delta: 8.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-12-15 12:16:17,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.20ms. Allocated memory is still 54.5MB. Free memory was 27.9MB in the beginning and 22.8MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:17,995 INFO L158 Benchmark]: Boogie Preprocessor took 79.50ms. Allocated memory is still 54.5MB. Free memory was 22.8MB in the beginning and 30.8MB in the end (delta: -7.9MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2021-12-15 12:16:17,995 INFO L158 Benchmark]: RCFGBuilder took 1124.00ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 30.6MB in the beginning and 39.2MB in the end (delta: -8.6MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2021-12-15 12:16:17,995 INFO L158 Benchmark]: TraceAbstraction took 372.24ms. Allocated memory is still 73.4MB. Free memory was 38.7MB in the beginning and 42.6MB in the end (delta: -3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:17,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 44.0MB. Free memory was 26.4MB in the beginning and 26.3MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.98ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 27.9MB in the end (delta: 8.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.20ms. Allocated memory is still 54.5MB. Free memory was 27.9MB in the beginning and 22.8MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.50ms. Allocated memory is still 54.5MB. Free memory was 22.8MB in the beginning and 30.8MB in the end (delta: -7.9MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * RCFGBuilder took 1124.00ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 30.6MB in the beginning and 39.2MB in the end (delta: -8.6MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 372.24ms. Allocated memory is still 73.4MB. Free memory was 38.7MB in the beginning and 42.6MB in the end (delta: -3.9MB). 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 12:16:18,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable