./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.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.13.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 6f520cae1fe274b0f3a6786f3c06c3b2db48180a97ced5103b1a188b50ee581d --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:16:07,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:16:07,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:16:07,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:16:07,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:16:07,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:16:07,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:16:07,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:16:07,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:16:07,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:16:07,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:16:07,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:16:07,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:16:07,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:16:07,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:16:07,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:16:07,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:16:07,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:16:07,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:16:07,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:16:07,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:16:07,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:16:07,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:16:07,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:16:07,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:16:07,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:16:07,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:16:07,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:16:07,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:16:07,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:16:07,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:16:07,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:16:07,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:16:07,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:16:07,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:16:07,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:16:07,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:16:07,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:16:07,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:16:07,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:16:07,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:16:07,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:16:07,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:16:07,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:16:07,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:16:07,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:16:07,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:16:07,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:16:07,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:16:07,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:16:07,305 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:16:07,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:16:07,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:16:07,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:16:07,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:16:07,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:16:07,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:16:07,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:16:07,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:16:07,306 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:16:07,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:16:07,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:16:07,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:16:07,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:16:07,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:16:07,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:16:07,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:07,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:16:07,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:16:07,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:16:07,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:16:07,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:16:07,308 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:16:07,308 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:16:07,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:16:07,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:16:07,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f520cae1fe274b0f3a6786f3c06c3b2db48180a97ced5103b1a188b50ee581d [2021-12-15 12:16:07,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:16:07,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:16:07,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:16:07,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:16:07,521 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:16:07,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c [2021-12-15 12:16:07,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef84c7a62/4d58da137eca445ba88fb6cbf907592b/FLAG7ce06034b [2021-12-15 12:16:07,922 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:16:07,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c [2021-12-15 12:16:07,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef84c7a62/4d58da137eca445ba88fb6cbf907592b/FLAG7ce06034b [2021-12-15 12:16:08,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef84c7a62/4d58da137eca445ba88fb6cbf907592b [2021-12-15 12:16:08,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:16:08,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:16:08,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:08,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:16:08,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:16:08,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669c23fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08, skipping insertion in model container [2021-12-15 12:16:08,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:16:08,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:16:08,511 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.13.cil-2.c[911,924] [2021-12-15 12:16:08,554 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.13.cil-2.c[8416,8429] [2021-12-15 12:16:08,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:08,640 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:16:08,651 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.13.cil-2.c[911,924] [2021-12-15 12:16:08,666 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.13.cil-2.c[8416,8429] [2021-12-15 12:16:08,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:08,757 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:16:08,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08 WrapperNode [2021-12-15 12:16:08,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:08,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:08,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:16:08,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:16:08,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,827 INFO L137 Inliner]: procedures = 81, calls = 100, calls flagged for inlining = 50, calls inlined = 50, statements flattened = 1136 [2021-12-15 12:16:08,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:08,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:16:08,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:16:08,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:16:08,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:16:08,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:16:08,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:16:08,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:16:08,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (1/1) ... [2021-12-15 12:16:08,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:08,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:16:09,001 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 12:16:09,031 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 12:16:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:16:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 12:16:09,041 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 12:16:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-15 12:16:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-15 12:16:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-15 12:16:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-15 12:16:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-15 12:16:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-15 12:16:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-15 12:16:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-15 12:16:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-15 12:16:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-15 12:16:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-15 12:16:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-15 12:16:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-15 12:16:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-15 12:16:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-15 12:16:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-15 12:16:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-15 12:16:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-15 12:16:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-15 12:16:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-15 12:16:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:16:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-15 12:16:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-15 12:16:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-15 12:16:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-15 12:16:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:16:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:16:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-15 12:16:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-15 12:16:09,212 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:16:09,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:16:09,832 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-12-15 12:16:09,832 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 12:16:09,890 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:16:09,903 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:16:09,904 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-12-15 12:16:09,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:09 BoogieIcfgContainer [2021-12-15 12:16:09,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:16:09,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:16:09,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:16:09,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:16:09,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:16:08" (1/3) ... [2021-12-15 12:16:09,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9c8522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:09, skipping insertion in model container [2021-12-15 12:16:09,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:08" (2/3) ... [2021-12-15 12:16:09,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9c8522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:09, skipping insertion in model container [2021-12-15 12:16:09,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:09" (3/3) ... [2021-12-15 12:16:09,914 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.13.cil-2.c [2021-12-15 12:16:09,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:16:09,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:16:09,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:16:09,964 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 12:16:09,964 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:16:09,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 524 states, 464 states have (on average 1.6422413793103448) internal successors, (762), 470 states have internal predecessors, (762), 43 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-15 12:16:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 12:16:09,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:16:09,994 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 12:16:09,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:16:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:16:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1273219449, now seen corresponding path program 1 times [2021-12-15 12:16:10,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:16:10,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029236805] [2021-12-15 12:16:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:16:10,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:16:10,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:16:10,055 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 12:16:10,075 INFO L158 Benchmark]: Toolchain (without parser) took 1760.30ms. Allocated memory was 107.0MB in the beginning and 159.4MB in the end (delta: 52.4MB). Free memory was 66.4MB in the beginning and 103.9MB in the end (delta: -37.5MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,075 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 107.0MB. Free memory was 84.5MB in the beginning and 84.3MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:10,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.82ms. Allocated memory is still 107.0MB. Free memory was 66.1MB in the beginning and 64.1MB in the end (delta: 2.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.90ms. Allocated memory is still 107.0MB. Free memory was 64.1MB in the beginning and 58.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,078 INFO L158 Benchmark]: Boogie Preprocessor took 71.40ms. Allocated memory is still 107.0MB. Free memory was 58.9MB in the beginning and 54.4MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,079 INFO L158 Benchmark]: RCFGBuilder took 1006.21ms. Allocated memory was 107.0MB in the beginning and 159.4MB in the end (delta: 52.4MB). Free memory was 54.4MB in the beginning and 116.5MB in the end (delta: -62.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,083 INFO L158 Benchmark]: TraceAbstraction took 164.32ms. Allocated memory is still 159.4MB. Free memory was 116.5MB in the beginning and 103.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:16:10,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 107.0MB. Free memory was 84.5MB in the beginning and 84.3MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.82ms. Allocated memory is still 107.0MB. Free memory was 66.1MB in the beginning and 64.1MB in the end (delta: 2.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.90ms. Allocated memory is still 107.0MB. Free memory was 64.1MB in the beginning and 58.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.40ms. Allocated memory is still 107.0MB. Free memory was 58.9MB in the beginning and 54.4MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1006.21ms. Allocated memory was 107.0MB in the beginning and 159.4MB in the end (delta: 52.4MB). Free memory was 54.4MB in the beginning and 116.5MB in the end (delta: -62.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * TraceAbstraction took 164.32ms. Allocated memory is still 159.4MB. Free memory was 116.5MB in the beginning and 103.9MB in the end (delta: 12.6MB). 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 12:16:10,133 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.13.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 6f520cae1fe274b0f3a6786f3c06c3b2db48180a97ced5103b1a188b50ee581d --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:16:11,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:16:11,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:16:11,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:16:11,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:16:11,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:16:11,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:16:11,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:16:11,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:16:11,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:16:11,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:16:11,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:16:11,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:16:11,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:16:11,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:16:11,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:16:11,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:16:11,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:16:11,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:16:11,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:16:11,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:16:11,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:16:11,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:16:11,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:16:11,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:16:11,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:16:11,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:16:11,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:16:11,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:16:11,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:16:11,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:16:11,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:16:11,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:16:11,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:16:11,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:16:11,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:16:11,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:16:11,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:16:11,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:16:11,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:16:11,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:16:11,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:16:11,857 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:16:11,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:16:11,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:16:11,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:16:11,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:16:11,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:16:11,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:16:11,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:16:11,861 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:16:11,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:16:11,862 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:16:11,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:16:11,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:16:11,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:16:11,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:16:11,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:16:11,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:16:11,863 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:16:11,863 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:16:11,863 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:16:11,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:16:11,863 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:16:11,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:16:11,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:16:11,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:16:11,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:16:11,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:11,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:16:11,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:16:11,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:16:11,865 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:16:11,865 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:16:11,865 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:16:11,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:16:11,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:16:11,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:16:11,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:16:11,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f520cae1fe274b0f3a6786f3c06c3b2db48180a97ced5103b1a188b50ee581d [2021-12-15 12:16:12,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:16:12,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:16:12,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:16:12,148 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:16:12,148 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:16:12,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c [2021-12-15 12:16:12,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866b16821/14c40ae24eaf4408867781c0def9d4d4/FLAGd16860d42 [2021-12-15 12:16:12,610 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:16:12,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c [2021-12-15 12:16:12,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866b16821/14c40ae24eaf4408867781c0def9d4d4/FLAGd16860d42 [2021-12-15 12:16:12,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866b16821/14c40ae24eaf4408867781c0def9d4d4 [2021-12-15 12:16:12,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:16:12,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:16:12,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:12,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:16:12,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:16:12,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:12" (1/1) ... [2021-12-15 12:16:12,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc44a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:12, skipping insertion in model container [2021-12-15 12:16:12,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:16:12" (1/1) ... [2021-12-15 12:16:12,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:16:13,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:16:13,130 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.13.cil-2.c[911,924] [2021-12-15 12:16:13,222 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.13.cil-2.c[8416,8429] [2021-12-15 12:16:13,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:13,308 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:16:13,316 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.13.cil-2.c[911,924] [2021-12-15 12:16:13,329 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.13.cil-2.c[8416,8429] [2021-12-15 12:16:13,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:16:13,416 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:16:13,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13 WrapperNode [2021-12-15 12:16:13,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:16:13,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:13,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:16:13,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:16:13,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (1/1) ... [2021-12-15 12:16:13,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (1/1) ... [2021-12-15 12:16:13,502 INFO L137 Inliner]: procedures = 82, calls = 100, calls flagged for inlining = 50, calls inlined = 50, statements flattened = 1094 [2021-12-15 12:16:13,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:16:13,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:16:13,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:16:13,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:16:13,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (1/1) ... [2021-12-15 12:16:13,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (1/1) ... [2021-12-15 12:16:13,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (1/1) ... [2021-12-15 12:16:13,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (1/1) ... [2021-12-15 12:16:13,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (1/1) ... [2021-12-15 12:16:13,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (1/1) ... [2021-12-15 12:16:13,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (1/1) ... [2021-12-15 12:16:13,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:16:13,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:16:13,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:16:13,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:16:13,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (1/1) ... [2021-12-15 12:16:13,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:16:13,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:16:13,604 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 12:16:13,607 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 12:16:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:16:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 12:16:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 12:16:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-15 12:16:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-15 12:16:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-15 12:16:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-15 12:16:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-15 12:16:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-15 12:16:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-15 12:16:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-15 12:16:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-15 12:16:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-15 12:16:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-15 12:16:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-15 12:16:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-15 12:16:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-15 12:16:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:16:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-15 12:16:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-15 12:16:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-15 12:16:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-15 12:16:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-15 12:16:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-15 12:16:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-15 12:16:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-15 12:16:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-15 12:16:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-15 12:16:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:16:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:16:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-15 12:16:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-15 12:16:13,799 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:16:13,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:16:14,524 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2021-12-15 12:16:14,525 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 12:16:14,617 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:16:14,632 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:16:14,633 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-12-15 12:16:14,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:14 BoogieIcfgContainer [2021-12-15 12:16:14,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:16:14,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:16:14,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:16:14,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:16:14,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:16:12" (1/3) ... [2021-12-15 12:16:14,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6967da32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:14, skipping insertion in model container [2021-12-15 12:16:14,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:16:13" (2/3) ... [2021-12-15 12:16:14,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6967da32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:16:14, skipping insertion in model container [2021-12-15 12:16:14,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:16:14" (3/3) ... [2021-12-15 12:16:14,640 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.13.cil-2.c [2021-12-15 12:16:14,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:16:14,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:16:14,678 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:16:14,683 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 12:16:14,683 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:16:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 524 states, 464 states have (on average 1.6422413793103448) internal successors, (762), 470 states have internal predecessors, (762), 43 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-15 12:16:14,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 12:16:14,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:16:14,735 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 12:16:14,736 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:16:14,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:16:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1273219449, now seen corresponding path program 1 times [2021-12-15 12:16:14,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 12:16:14,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596623251] [2021-12-15 12:16:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:16:14,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 12:16:14,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 12:16:14,778 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 12:16:14,780 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 12:16:14,856 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 12:16:15,039 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 12:16:15,040 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 12:16:15,043 INFO L158 Benchmark]: Toolchain (without parser) took 2058.09ms. Allocated memory was 52.4MB in the beginning and 83.9MB in the end (delta: 31.5MB). Free memory was 28.7MB in the beginning and 56.3MB in the end (delta: -27.6MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2021-12-15 12:16:15,043 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 33.9MB in the beginning and 33.9MB in the end (delta: 37.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:16:15,043 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.72ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.6MB in the beginning and 37.5MB in the end (delta: -8.9MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-12-15 12:16:15,044 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.95ms. Allocated memory is still 69.2MB. Free memory was 37.5MB in the beginning and 49.5MB in the end (delta: -12.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-12-15 12:16:15,044 INFO L158 Benchmark]: Boogie Preprocessor took 72.31ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 44.4MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 12:16:15,045 INFO L158 Benchmark]: RCFGBuilder took 1059.04ms. Allocated memory is still 69.2MB. Free memory was 44.4MB in the beginning and 34.7MB in the end (delta: 9.6MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2021-12-15 12:16:15,045 INFO L158 Benchmark]: TraceAbstraction took 405.80ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 34.0MB in the beginning and 56.3MB in the end (delta: -22.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:16:15,047 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 52.4MB. Free memory was 33.9MB in the beginning and 33.9MB in the end (delta: 37.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.72ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.6MB in the beginning and 37.5MB in the end (delta: -8.9MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.95ms. Allocated memory is still 69.2MB. Free memory was 37.5MB in the beginning and 49.5MB in the end (delta: -12.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.31ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 44.4MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1059.04ms. Allocated memory is still 69.2MB. Free memory was 44.4MB in the beginning and 34.7MB in the end (delta: 9.6MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * TraceAbstraction took 405.80ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 34.0MB in the beginning and 56.3MB in the end (delta: -22.3MB). 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 12:16:15,071 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