./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.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/Problem05_label49+token_ring.09.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 16b6a38408403620534e0fd3420fc5cec7a59a0b00c704b760a1c7da59bda35b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:51:21,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:51:21,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:51:21,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:51:21,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:51:21,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:51:21,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:51:21,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:51:21,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:51:21,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:51:21,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:51:21,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:51:21,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:51:21,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:51:21,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:51:21,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:51:21,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:51:21,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:51:21,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:51:21,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:51:21,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:51:21,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:51:21,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:51:21,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:51:21,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:51:21,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:51:21,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:51:21,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:51:21,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:51:21,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:51:21,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:51:21,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:51:21,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:51:21,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:51:21,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:51:21,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:51:21,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:51:21,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:51:21,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:51:21,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:51:21,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:51:21,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:51:21,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:51:21,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:51:21,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:51:21,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:51:21,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:51:21,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:51:21,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:51:21,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:51:21,182 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:51:21,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:51:21,182 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:51:21,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:51:21,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:51:21,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:51:21,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:51:21,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:51:21,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:51:21,183 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:51:21,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:51:21,184 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:51:21,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:51:21,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:51:21,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:51:21,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:51:21,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:21,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:51:21,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:51:21,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:51:21,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:51:21,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:51:21,185 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:51:21,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:51:21,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:51:21,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:51:21,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16b6a38408403620534e0fd3420fc5cec7a59a0b00c704b760a1c7da59bda35b [2021-12-15 11:51:21,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:51:21,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:51:21,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:51:21,400 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:51:21,400 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:51:21,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-2.c [2021-12-15 11:51:21,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9008758/25c0fcb36a684c97ab6d0fb3697b9fed/FLAG13f1d797b [2021-12-15 11:51:22,127 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:51:22,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-2.c [2021-12-15 11:51:22,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9008758/25c0fcb36a684c97ab6d0fb3697b9fed/FLAG13f1d797b [2021-12-15 11:51:22,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9008758/25c0fcb36a684c97ab6d0fb3697b9fed [2021-12-15 11:51:22,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:51:22,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:51:22,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:22,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:51:22,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:51:22,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:22" (1/1) ... [2021-12-15 11:51:22,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d6c539d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:22, skipping insertion in model container [2021-12-15 11:51:22,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:22" (1/1) ... [2021-12-15 11:51:22,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:51:22,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:51:23,785 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/Problem05_label49+token_ring.09.cil-2.c[380593,380606] [2021-12-15 11:51:23,805 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/Problem05_label49+token_ring.09.cil-2.c[383339,383352] [2021-12-15 11:51:23,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:23,999 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:51:24,599 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/Problem05_label49+token_ring.09.cil-2.c[380593,380606] [2021-12-15 11:51:24,616 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/Problem05_label49+token_ring.09.cil-2.c[383339,383352] [2021-12-15 11:51:24,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:24,719 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:51:24,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24 WrapperNode [2021-12-15 11:51:24,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:24,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:24,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:51:24,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:51:24,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (1/1) ... [2021-12-15 11:51:24,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (1/1) ... [2021-12-15 11:51:25,200 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2021-12-15 11:51:25,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:25,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:51:25,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:51:25,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:51:25,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (1/1) ... [2021-12-15 11:51:25,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (1/1) ... [2021-12-15 11:51:25,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (1/1) ... [2021-12-15 11:51:25,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (1/1) ... [2021-12-15 11:51:25,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (1/1) ... [2021-12-15 11:51:25,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (1/1) ... [2021-12-15 11:51:25,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (1/1) ... [2021-12-15 11:51:25,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:51:25,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:51:25,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:51:25,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:51:25,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (1/1) ... [2021-12-15 11:51:25,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:25,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:51:25,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:51:25,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:51:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:51:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:51:25,870 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:51:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:51:25,870 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:51:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:51:25,871 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:51:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:51:25,871 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:51:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:51:25,871 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:51:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:51:25,871 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:51:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:51:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:51:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:51:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:51:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:51:26,060 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:51:26,066 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:51:31,006 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:51:31,031 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:51:31,031 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-15 11:51:31,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:31 BoogieIcfgContainer [2021-12-15 11:51:31,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:51:31,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:51:31,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:51:31,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:51:31,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:51:22" (1/3) ... [2021-12-15 11:51:31,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242e9121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:31, skipping insertion in model container [2021-12-15 11:51:31,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:24" (2/3) ... [2021-12-15 11:51:31,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242e9121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:31, skipping insertion in model container [2021-12-15 11:51:31,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:31" (3/3) ... [2021-12-15 11:51:31,041 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.09.cil-2.c [2021-12-15 11:51:31,044 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:51:31,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:51:31,081 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:51:31,086 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:51:31,086 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:51:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-15 11:51:31,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-15 11:51:31,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:51:31,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:51:31,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:51:31,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:51:31,164 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2021-12-15 11:51:31,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:51:31,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975829362] [2021-12-15 11:51:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:51:31,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:51:31,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:51:31,238 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:51:31,243 INFO L158 Benchmark]: Toolchain (without parser) took 8811.07ms. Allocated memory was 96.5MB in the beginning and 851.4MB in the end (delta: 755.0MB). Free memory was 47.7MB in the beginning and 411.5MB in the end (delta: -363.8MB). Peak memory consumption was 392.2MB. Max. memory is 16.1GB. [2021-12-15 11:51:31,243 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 79.7MB. Free memory was 39.0MB in the beginning and 39.0MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:51:31,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2288.59ms. Allocated memory was 96.5MB in the beginning and 159.4MB in the end (delta: 62.9MB). Free memory was 47.3MB in the beginning and 51.0MB in the end (delta: -3.7MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. [2021-12-15 11:51:31,244 INFO L158 Benchmark]: Boogie Procedure Inliner took 480.61ms. Allocated memory was 159.4MB in the beginning and 239.1MB in the end (delta: 79.7MB). Free memory was 51.0MB in the beginning and 105.7MB in the end (delta: -54.8MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2021-12-15 11:51:31,244 INFO L158 Benchmark]: Boogie Preprocessor took 505.36ms. Allocated memory is still 239.1MB. Free memory was 105.7MB in the beginning and 104.2MB in the end (delta: 1.6MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2021-12-15 11:51:31,245 INFO L158 Benchmark]: RCFGBuilder took 5327.10ms. Allocated memory was 239.1MB in the beginning and 851.4MB in the end (delta: 612.4MB). Free memory was 104.2MB in the beginning and 433.5MB in the end (delta: -329.4MB). Peak memory consumption was 283.0MB. Max. memory is 16.1GB. [2021-12-15 11:51:31,245 INFO L158 Benchmark]: TraceAbstraction took 205.38ms. Allocated memory is still 851.4MB. Free memory was 433.5MB in the beginning and 411.5MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:31,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 79.7MB. Free memory was 39.0MB in the beginning and 39.0MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2288.59ms. Allocated memory was 96.5MB in the beginning and 159.4MB in the end (delta: 62.9MB). Free memory was 47.3MB in the beginning and 51.0MB in the end (delta: -3.7MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 480.61ms. Allocated memory was 159.4MB in the beginning and 239.1MB in the end (delta: 79.7MB). Free memory was 51.0MB in the beginning and 105.7MB in the end (delta: -54.8MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 505.36ms. Allocated memory is still 239.1MB. Free memory was 105.7MB in the beginning and 104.2MB in the end (delta: 1.6MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * RCFGBuilder took 5327.10ms. Allocated memory was 239.1MB in the beginning and 851.4MB in the end (delta: 612.4MB). Free memory was 104.2MB in the beginning and 433.5MB in the end (delta: -329.4MB). Peak memory consumption was 283.0MB. Max. memory is 16.1GB. * TraceAbstraction took 205.38ms. Allocated memory is still 851.4MB. Free memory was 433.5MB in the beginning and 411.5MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:51:31,276 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/Problem05_label49+token_ring.09.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 16b6a38408403620534e0fd3420fc5cec7a59a0b00c704b760a1c7da59bda35b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:51:33,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:51:33,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:51:33,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:51:33,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:51:33,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:51:33,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:51:33,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:51:33,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:51:33,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:51:33,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:51:33,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:51:33,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:51:33,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:51:33,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:51:33,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:51:33,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:51:33,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:51:33,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:51:33,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:51:33,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:51:33,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:51:33,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:51:33,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:51:33,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:51:33,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:51:33,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:51:33,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:51:33,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:51:33,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:51:33,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:51:33,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:51:33,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:51:33,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:51:33,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:51:33,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:51:33,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:51:33,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:51:33,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:51:33,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:51:33,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:51:33,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:51:33,113 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:51:33,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:51:33,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:51:33,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:51:33,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:51:33,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:51:33,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:51:33,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:51:33,116 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:51:33,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:51:33,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:51:33,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:51:33,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:51:33,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:51:33,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:51:33,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:51:33,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:51:33,117 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:51:33,117 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:51:33,117 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:51:33,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:51:33,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:51:33,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:51:33,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:51:33,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:51:33,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:51:33,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:33,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:51:33,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:51:33,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:51:33,119 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:51:33,119 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:51:33,119 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:51:33,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:51:33,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:51:33,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:51:33,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:51:33,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16b6a38408403620534e0fd3420fc5cec7a59a0b00c704b760a1c7da59bda35b [2021-12-15 11:51:33,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:51:33,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:51:33,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:51:33,439 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:51:33,439 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:51:33,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-2.c [2021-12-15 11:51:33,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0d9142d/1b36611074e94f6fa7bb3e7e30ef8265/FLAG2be7bebb5 [2021-12-15 11:51:34,265 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:51:34,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-2.c [2021-12-15 11:51:34,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0d9142d/1b36611074e94f6fa7bb3e7e30ef8265/FLAG2be7bebb5 [2021-12-15 11:51:34,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0d9142d/1b36611074e94f6fa7bb3e7e30ef8265 [2021-12-15 11:51:34,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:51:34,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:51:34,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:34,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:51:34,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:51:34,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:34" (1/1) ... [2021-12-15 11:51:34,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c8f3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:34, skipping insertion in model container [2021-12-15 11:51:34,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:34" (1/1) ... [2021-12-15 11:51:34,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:51:34,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:51:36,083 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/Problem05_label49+token_ring.09.cil-2.c[380593,380606] [2021-12-15 11:51:36,105 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/Problem05_label49+token_ring.09.cil-2.c[383339,383352] [2021-12-15 11:51:36,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:36,331 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:51:37,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-2.c[380593,380606] [2021-12-15 11:51:37,063 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/Problem05_label49+token_ring.09.cil-2.c[383339,383352] [2021-12-15 11:51:37,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:37,161 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:51:37,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37 WrapperNode [2021-12-15 11:51:37,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:37,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:37,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:51:37,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:51:37,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (1/1) ... [2021-12-15 11:51:37,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (1/1) ... [2021-12-15 11:51:37,525 INFO L137 Inliner]: procedures = 63, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 12993 [2021-12-15 11:51:37,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:37,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:51:37,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:51:37,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:51:37,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (1/1) ... [2021-12-15 11:51:37,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (1/1) ... [2021-12-15 11:51:37,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (1/1) ... [2021-12-15 11:51:37,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (1/1) ... [2021-12-15 11:51:37,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (1/1) ... [2021-12-15 11:51:37,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (1/1) ... [2021-12-15 11:51:37,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (1/1) ... [2021-12-15 11:51:38,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:51:38,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:51:38,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:51:38,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:51:38,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (1/1) ... [2021-12-15 11:51:38,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:38,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:51:38,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:51:38,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:51:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:51:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:51:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:51:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:51:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:51:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:51:38,151 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:51:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:51:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:51:38,151 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:51:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:51:38,151 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:51:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:51:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:51:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:51:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:51:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:51:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:51:38,309 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:51:38,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:51:45,172 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:51:45,200 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:51:45,200 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-15 11:51:45,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:45 BoogieIcfgContainer [2021-12-15 11:51:45,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:51:45,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:51:45,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:51:45,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:51:45,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:51:34" (1/3) ... [2021-12-15 11:51:45,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cec57c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:45, skipping insertion in model container [2021-12-15 11:51:45,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:37" (2/3) ... [2021-12-15 11:51:45,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cec57c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:45, skipping insertion in model container [2021-12-15 11:51:45,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:45" (3/3) ... [2021-12-15 11:51:45,210 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.09.cil-2.c [2021-12-15 11:51:45,213 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:51:45,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:51:45,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:51:45,260 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:51:45,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:51:45,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-15 11:51:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-15 11:51:45,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:51:45,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:51:45,330 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:51:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:51:45,334 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2021-12-15 11:51:45,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:51:45,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771417896] [2021-12-15 11:51:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:51:45,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:51:45,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:51:45,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:51:45,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:51:45,410 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 11:51:45,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:51:45,608 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:51:45,613 INFO L158 Benchmark]: Toolchain (without parser) took 11095.64ms. Allocated memory was 60.8MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 32.6MB in the beginning and 412.4MB in the end (delta: -379.8MB). Peak memory consumption was 630.9MB. Max. memory is 16.1GB. [2021-12-15 11:51:45,614 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:51:45,614 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2643.60ms. Allocated memory was 60.8MB in the beginning and 222.3MB in the end (delta: 161.5MB). Free memory was 32.6MB in the beginning and 132.8MB in the end (delta: -100.1MB). Peak memory consumption was 118.9MB. Max. memory is 16.1GB. [2021-12-15 11:51:45,614 INFO L158 Benchmark]: Boogie Procedure Inliner took 362.84ms. Allocated memory is still 222.3MB. Free memory was 132.8MB in the beginning and 84.1MB in the end (delta: 48.7MB). Peak memory consumption was 88.0MB. Max. memory is 16.1GB. [2021-12-15 11:51:45,615 INFO L158 Benchmark]: Boogie Preprocessor took 500.77ms. Allocated memory was 222.3MB in the beginning and 536.9MB in the end (delta: 314.6MB). Free memory was 84.1MB in the beginning and 375.7MB in the end (delta: -291.6MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:45,615 INFO L158 Benchmark]: RCFGBuilder took 7175.87ms. Allocated memory was 536.9MB in the beginning and 1.1GB in the end (delta: 536.9MB). Free memory was 375.7MB in the beginning and 437.6MB in the end (delta: -61.9MB). Peak memory consumption was 476.5MB. Max. memory is 16.1GB. [2021-12-15 11:51:45,616 INFO L158 Benchmark]: TraceAbstraction took 406.87ms. Allocated memory is still 1.1GB. Free memory was 437.6MB in the beginning and 412.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:51:45,618 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 50.3MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2643.60ms. Allocated memory was 60.8MB in the beginning and 222.3MB in the end (delta: 161.5MB). Free memory was 32.6MB in the beginning and 132.8MB in the end (delta: -100.1MB). Peak memory consumption was 118.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 362.84ms. Allocated memory is still 222.3MB. Free memory was 132.8MB in the beginning and 84.1MB in the end (delta: 48.7MB). Peak memory consumption was 88.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 500.77ms. Allocated memory was 222.3MB in the beginning and 536.9MB in the end (delta: 314.6MB). Free memory was 84.1MB in the beginning and 375.7MB in the end (delta: -291.6MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. * RCFGBuilder took 7175.87ms. Allocated memory was 536.9MB in the beginning and 1.1GB in the end (delta: 536.9MB). Free memory was 375.7MB in the beginning and 437.6MB in the end (delta: -61.9MB). Peak memory consumption was 476.5MB. Max. memory is 16.1GB. * TraceAbstraction took 406.87ms. Allocated memory is still 1.1GB. Free memory was 437.6MB in the beginning and 412.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:51:45,669 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