./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c106345e9477571987e92ea289ca141c8dda13e5ec4cb633eccf96e295486f4c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:15:38,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:15:38,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:15:38,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:15:38,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:15:38,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:15:38,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:15:38,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:15:38,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:15:38,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:15:38,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:15:38,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:15:38,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:15:38,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:15:38,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:15:38,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:15:38,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:15:38,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:15:38,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:15:38,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:15:38,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:15:38,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:15:38,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:15:38,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:15:38,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:15:38,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:15:38,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:15:38,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:15:38,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:15:38,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:15:38,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:15:38,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:15:38,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:15:38,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:15:38,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:15:38,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:15:38,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:15:38,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:15:38,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:15:38,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:15:38,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:15:38,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:15:38,268 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:15:38,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:15:38,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:15:38,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:15:38,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:15:38,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:15:38,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:15:38,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:15:38,269 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:15:38,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:15:38,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:15:38,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:15:38,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:15:38,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:15:38,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:15:38,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:15:38,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:15:38,270 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:15:38,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:15:38,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:15:38,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:15:38,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:15:38,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:15:38,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:15:38,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:15:38,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:15:38,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:15:38,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:15:38,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:15:38,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:15:38,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:15:38,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:15:38,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:15:38,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:15:38,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c106345e9477571987e92ea289ca141c8dda13e5ec4cb633eccf96e295486f4c [2021-12-15 12:15:38,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:15:38,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:15:38,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:15:38,476 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:15:38,476 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:15:38,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-12-15 12:15:38,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66d5929f9/77e68af989944b87b39df13873ec52f4/FLAG379466e12 [2021-12-15 12:15:38,903 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:15:38,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-12-15 12:15:38,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66d5929f9/77e68af989944b87b39df13873ec52f4/FLAG379466e12 [2021-12-15 12:15:38,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66d5929f9/77e68af989944b87b39df13873ec52f4 [2021-12-15 12:15:38,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:15:38,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:15:38,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:15:38,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:15:38,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:15:38,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:15:38" (1/1) ... [2021-12-15 12:15:38,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd5c25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:38, skipping insertion in model container [2021-12-15 12:15:38,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:15:38" (1/1) ... [2021-12-15 12:15:38,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:15:38,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:15:39,084 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_2.cil-2+token_ring.02.cil-1.c[914,927] [2021-12-15 12:15:39,110 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_2.cil-2+token_ring.02.cil-1.c[7125,7138] [2021-12-15 12:15:39,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:15:39,138 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:15:39,145 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_2.cil-2+token_ring.02.cil-1.c[914,927] [2021-12-15 12:15:39,158 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_2.cil-2+token_ring.02.cil-1.c[7125,7138] [2021-12-15 12:15:39,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:15:39,192 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:15:39,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39 WrapperNode [2021-12-15 12:15:39,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:15:39,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:15:39,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:15:39,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:15:39,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (1/1) ... [2021-12-15 12:15:39,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (1/1) ... [2021-12-15 12:15:39,245 INFO L137 Inliner]: procedures = 57, calls = 64, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 461 [2021-12-15 12:15:39,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:15:39,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:15:39,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:15:39,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:15:39,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (1/1) ... [2021-12-15 12:15:39,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (1/1) ... [2021-12-15 12:15:39,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (1/1) ... [2021-12-15 12:15:39,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (1/1) ... [2021-12-15 12:15:39,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (1/1) ... [2021-12-15 12:15:39,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (1/1) ... [2021-12-15 12:15:39,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (1/1) ... [2021-12-15 12:15:39,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:15:39,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:15:39,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:15:39,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:15:39,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (1/1) ... [2021-12-15 12:15:39,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:15:39,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:15:39,306 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 12:15:39,312 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 12:15:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:15:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 12:15:39,335 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 12:15:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-15 12:15:39,335 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-15 12:15:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-15 12:15:39,335 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-15 12:15:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-15 12:15:39,335 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-15 12:15:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-15 12:15:39,335 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-15 12:15:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-15 12:15:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-15 12:15:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-15 12:15:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-15 12:15:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-15 12:15:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-15 12:15:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-15 12:15:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-15 12:15:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-15 12:15:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-15 12:15:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-15 12:15:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-15 12:15:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:15:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-15 12:15:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-15 12:15:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-15 12:15:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-15 12:15:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:15:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:15:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-15 12:15:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-15 12:15:39,419 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:15:39,421 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:15:39,723 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:15:39,733 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:15:39,733 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-15 12:15:39,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:15:39 BoogieIcfgContainer [2021-12-15 12:15:39,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:15:39,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:15:39,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:15:39,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:15:39,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:15:38" (1/3) ... [2021-12-15 12:15:39,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e19a716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:15:39, skipping insertion in model container [2021-12-15 12:15:39,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:39" (2/3) ... [2021-12-15 12:15:39,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e19a716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:15:39, skipping insertion in model container [2021-12-15 12:15:39,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:15:39" (3/3) ... [2021-12-15 12:15:39,743 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-12-15 12:15:39,746 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:15:39,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:15:39,785 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:15:39,791 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 12:15:39,792 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:15:39,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 186 states have (on average 1.553763440860215) internal successors, (289), 193 states have internal predecessors, (289), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-15 12:15:39,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-15 12:15:39,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:15:39,831 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] [2021-12-15 12:15:39,831 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:15:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:15:39,835 INFO L85 PathProgramCache]: Analyzing trace with hash 381071048, now seen corresponding path program 1 times [2021-12-15 12:15:39,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:15:39,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302769404] [2021-12-15 12:15:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:15:39,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:15:39,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:15:39,894 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 12:15:39,900 INFO L158 Benchmark]: Toolchain (without parser) took 968.96ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 64.5MB in the beginning and 52.3MB in the end (delta: 12.2MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2021-12-15 12:15:39,900 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:15:39,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.15ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 64.2MB in the beginning and 93.6MB in the end (delta: -29.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 12:15:39,902 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.78ms. Allocated memory is still 123.7MB. Free memory was 93.6MB in the beginning and 90.8MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:15:39,902 INFO L158 Benchmark]: Boogie Preprocessor took 33.13ms. Allocated memory is still 123.7MB. Free memory was 90.8MB in the beginning and 88.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:15:39,903 INFO L158 Benchmark]: RCFGBuilder took 456.38ms. Allocated memory is still 123.7MB. Free memory was 88.7MB in the beginning and 63.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 12:15:39,907 INFO L158 Benchmark]: TraceAbstraction took 160.75ms. Allocated memory is still 123.7MB. Free memory was 62.8MB in the beginning and 52.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 12:15:39,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.15ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 64.2MB in the beginning and 93.6MB in the end (delta: -29.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.78ms. Allocated memory is still 123.7MB. Free memory was 93.6MB in the beginning and 90.8MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.13ms. Allocated memory is still 123.7MB. Free memory was 90.8MB in the beginning and 88.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 456.38ms. Allocated memory is still 123.7MB. Free memory was 88.7MB in the beginning and 63.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 160.75ms. Allocated memory is still 123.7MB. Free memory was 62.8MB in the beginning and 52.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. 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 12:15:39,943 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_2.cil-2+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c106345e9477571987e92ea289ca141c8dda13e5ec4cb633eccf96e295486f4c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:15:41,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:15:41,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:15:41,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:15:41,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:15:41,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:15:41,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:15:41,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:15:41,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:15:41,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:15:41,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:15:41,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:15:41,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:15:41,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:15:41,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:15:41,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:15:41,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:15:41,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:15:41,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:15:41,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:15:41,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:15:41,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:15:41,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:15:41,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:15:41,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:15:41,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:15:41,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:15:41,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:15:41,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:15:41,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:15:41,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:15:41,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:15:41,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:15:41,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:15:41,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:15:41,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:15:41,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:15:41,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:15:41,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:15:41,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:15:41,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:15:41,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:15:41,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:15:41,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:15:41,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:15:41,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:15:41,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:15:41,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:15:41,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:15:41,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:15:41,665 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:15:41,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:15:41,666 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:15:41,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:15:41,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:15:41,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:15:41,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:15:41,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:15:41,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:15:41,667 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:15:41,667 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:15:41,667 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:15:41,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:15:41,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:15:41,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:15:41,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:15:41,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:15:41,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:15:41,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:15:41,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:15:41,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:15:41,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:15:41,676 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:15:41,676 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:15:41,676 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:15:41,676 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:15:41,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:15:41,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:15:41,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:15:41,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c106345e9477571987e92ea289ca141c8dda13e5ec4cb633eccf96e295486f4c [2021-12-15 12:15:41,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:15:41,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:15:41,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:15:41,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:15:41,920 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:15:41,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-12-15 12:15:41,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72bb63ff3/0301e941df8f48fdb1aa632af8f1db44/FLAG17f5c20b0 [2021-12-15 12:15:42,381 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:15:42,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-12-15 12:15:42,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72bb63ff3/0301e941df8f48fdb1aa632af8f1db44/FLAG17f5c20b0 [2021-12-15 12:15:42,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72bb63ff3/0301e941df8f48fdb1aa632af8f1db44 [2021-12-15 12:15:42,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:15:42,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:15:42,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:15:42,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:15:42,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:15:42,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346f2ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42, skipping insertion in model container [2021-12-15 12:15:42,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:15:42,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:15:42,589 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_2.cil-2+token_ring.02.cil-1.c[914,927] [2021-12-15 12:15:42,661 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_2.cil-2+token_ring.02.cil-1.c[7125,7138] [2021-12-15 12:15:42,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:15:42,703 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:15:42,714 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_2.cil-2+token_ring.02.cil-1.c[914,927] [2021-12-15 12:15:42,739 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_2.cil-2+token_ring.02.cil-1.c[7125,7138] [2021-12-15 12:15:42,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:15:42,774 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:15:42,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42 WrapperNode [2021-12-15 12:15:42,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:15:42,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:15:42,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:15:42,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:15:42,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,843 INFO L137 Inliner]: procedures = 58, calls = 64, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 442 [2021-12-15 12:15:42,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:15:42,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:15:42,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:15:42,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:15:42,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:15:42,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:15:42,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:15:42,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:15:42,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (1/1) ... [2021-12-15 12:15:42,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:15:42,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:15:42,915 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 12:15:42,940 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 12:15:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:15:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 12:15:42,954 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 12:15:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-15 12:15:42,955 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-15 12:15:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-15 12:15:42,955 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-15 12:15:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-15 12:15:42,955 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-15 12:15:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-15 12:15:42,955 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-15 12:15:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-15 12:15:42,956 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-15 12:15:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-15 12:15:42,956 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-15 12:15:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-15 12:15:42,956 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-15 12:15:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:15:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-15 12:15:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-15 12:15:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-15 12:15:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-15 12:15:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-15 12:15:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-15 12:15:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-15 12:15:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-15 12:15:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-15 12:15:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-15 12:15:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:15:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:15:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-15 12:15:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-15 12:15:43,040 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:15:43,041 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:15:43,455 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:15:43,464 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:15:43,465 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-15 12:15:43,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:15:43 BoogieIcfgContainer [2021-12-15 12:15:43,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:15:43,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:15:43,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:15:43,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:15:43,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:15:42" (1/3) ... [2021-12-15 12:15:43,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9439b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:15:43, skipping insertion in model container [2021-12-15 12:15:43,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:15:42" (2/3) ... [2021-12-15 12:15:43,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9439b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:15:43, skipping insertion in model container [2021-12-15 12:15:43,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:15:43" (3/3) ... [2021-12-15 12:15:43,473 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-12-15 12:15:43,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:15:43,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:15:43,513 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:15:43,520 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 12:15:43,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:15:43,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 186 states have (on average 1.553763440860215) internal successors, (289), 193 states have internal predecessors, (289), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-15 12:15:43,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-15 12:15:43,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:15:43,547 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] [2021-12-15 12:15:43,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:15:43,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:15:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash 381071048, now seen corresponding path program 1 times [2021-12-15 12:15:43,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 12:15:43,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849398986] [2021-12-15 12:15:43,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:15:43,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 12:15:43,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 12:15:43,565 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 12:15:43,566 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 12:15:43,604 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 12:15:43,801 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 12:15:43,802 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 12:15:43,805 INFO L158 Benchmark]: Toolchain (without parser) took 1396.14ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.9MB in the beginning and 35.8MB in the end (delta: -6.9MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-12-15 12:15:43,805 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:15:43,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.31ms. 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 46.0MB in the end (delta: -17.4MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-12-15 12:15:43,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.02ms. Allocated memory is still 69.2MB. Free memory was 46.0MB in the beginning and 43.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:15:43,807 INFO L158 Benchmark]: Boogie Preprocessor took 46.35ms. Allocated memory is still 69.2MB. Free memory was 43.2MB in the beginning and 40.7MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:15:43,809 INFO L158 Benchmark]: RCFGBuilder took 574.43ms. Allocated memory is still 69.2MB. Free memory was 40.7MB in the beginning and 46.0MB in the end (delta: -5.3MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-12-15 12:15:43,812 INFO L158 Benchmark]: TraceAbstraction took 334.71ms. Allocated memory is still 69.2MB. Free memory was 45.7MB in the beginning and 35.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 12:15:43,816 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 is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.31ms. 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 46.0MB in the end (delta: -17.4MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.02ms. Allocated memory is still 69.2MB. Free memory was 46.0MB in the beginning and 43.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.35ms. Allocated memory is still 69.2MB. Free memory was 43.2MB in the beginning and 40.7MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 574.43ms. Allocated memory is still 69.2MB. Free memory was 40.7MB in the beginning and 46.0MB in the end (delta: -5.3MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 334.71ms. Allocated memory is still 69.2MB. Free memory was 45.7MB in the beginning and 35.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. 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 12:15:43,841 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