./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.01.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/systemc/token_ring.01.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 7b0a21004c99a1cc1588d43a2481960a2ce9f2cdf68e9a363306433e7d24bd30 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:12:28,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:12:28,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:12:28,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:12:28,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:12:28,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:12:28,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:12:28,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:12:28,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:12:28,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:12:28,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:12:28,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:12:28,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:12:28,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:12:28,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:12:28,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:12:28,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:12:28,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:12:28,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:12:28,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:12:28,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:12:28,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:12:28,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:12:28,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:12:28,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:12:28,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:12:28,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:12:28,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:12:28,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:12:28,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:12:28,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:12:28,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:12:28,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:12:28,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:12:28,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:12:28,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:12:28,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:12:28,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:12:28,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:12:28,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:12:28,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:12:28,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:12:28,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:12:28,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:12:28,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:12:28,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:12:28,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:12:28,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:12:28,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:12:28,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:12:28,662 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:12:28,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:12:28,663 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:12:28,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:12:28,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:12:28,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:12:28,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:12:28,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:12:28,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:12:28,664 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:12:28,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:12:28,664 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:12:28,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:12:28,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:12:28,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:12:28,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:12:28,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:12:28,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:12:28,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:12:28,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:12:28,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:12:28,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:12:28,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:12:28,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:12:28,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:12:28,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:12:28,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b0a21004c99a1cc1588d43a2481960a2ce9f2cdf68e9a363306433e7d24bd30 [2021-12-15 11:12:28,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:12:28,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:12:28,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:12:28,944 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:12:28,945 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:12:28,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.01.cil-1.c [2021-12-15 11:12:29,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b91c0ec0/225408db8b0e4d95bbed9af88ff58bdc/FLAG2dd0f4332 [2021-12-15 11:12:29,395 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:12:29,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.01.cil-1.c [2021-12-15 11:12:29,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b91c0ec0/225408db8b0e4d95bbed9af88ff58bdc/FLAG2dd0f4332 [2021-12-15 11:12:29,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b91c0ec0/225408db8b0e4d95bbed9af88ff58bdc [2021-12-15 11:12:29,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:12:29,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:12:29,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:12:29,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:12:29,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:12:29,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a75c46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29, skipping insertion in model container [2021-12-15 11:12:29,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:12:29,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:12:29,599 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/systemc/token_ring.01.cil-1.c[671,684] [2021-12-15 11:12:29,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:12:29,689 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:12:29,703 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/systemc/token_ring.01.cil-1.c[671,684] [2021-12-15 11:12:29,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:12:29,752 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:12:29,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29 WrapperNode [2021-12-15 11:12:29,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:12:29,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:12:29,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:12:29,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:12:29,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,809 INFO L137 Inliner]: procedures = 30, calls = 34, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 215 [2021-12-15 11:12:29,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:12:29,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:12:29,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:12:29,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:12:29,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:12:29,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:12:29,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:12:29,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:12:29,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (1/1) ... [2021-12-15 11:12:29,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:12:29,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:12:29,875 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 11:12:29,887 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 11:12:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:12:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:12:29,911 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:12:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:12:29,911 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:12:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:12:29,911 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:12:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:12:29,912 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:12:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:12:29,912 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:12:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:12:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:12:29,912 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:12:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:12:29,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:12:29,983 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:12:29,984 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:12:30,170 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:12:30,176 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:12:30,176 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-15 11:12:30,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:12:30 BoogieIcfgContainer [2021-12-15 11:12:30,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:12:30,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:12:30,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:12:30,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:12:30,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:12:29" (1/3) ... [2021-12-15 11:12:30,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de7d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:12:30, skipping insertion in model container [2021-12-15 11:12:30,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:29" (2/3) ... [2021-12-15 11:12:30,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de7d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:12:30, skipping insertion in model container [2021-12-15 11:12:30,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:12:30" (3/3) ... [2021-12-15 11:12:30,185 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2021-12-15 11:12:30,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:12:30,203 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:12:30,283 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:12:30,301 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 11:12:30,301 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:12:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 84 states have (on average 1.5238095238095237) internal successors, (128), 86 states have internal predecessors, (128), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-15 11:12:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-15 11:12:30,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:12:30,330 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] [2021-12-15 11:12:30,330 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:12:30,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:12:30,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1624964503, now seen corresponding path program 1 times [2021-12-15 11:12:30,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:12:30,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74182681] [2021-12-15 11:12:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:12:30,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:12:30,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:12:30,391 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 11:12:30,395 INFO L158 Benchmark]: Toolchain (without parser) took 968.43ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 61.0MB in the beginning and 91.0MB in the end (delta: -30.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:12:30,396 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:12:30,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.15ms. Allocated memory is still 98.6MB. Free memory was 60.8MB in the beginning and 72.3MB in the end (delta: -11.5MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-12-15 11:12:30,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.38ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 70.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:12:30,399 INFO L158 Benchmark]: Boogie Preprocessor took 35.42ms. Allocated memory is still 98.6MB. Free memory was 70.1MB in the beginning and 68.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:12:30,400 INFO L158 Benchmark]: RCFGBuilder took 331.46ms. Allocated memory is still 98.6MB. Free memory was 68.7MB in the beginning and 54.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-15 11:12:30,404 INFO L158 Benchmark]: TraceAbstraction took 214.53ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 53.4MB in the beginning and 91.0MB in the end (delta: -37.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:12:30,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.15ms. Allocated memory is still 98.6MB. Free memory was 60.8MB in the beginning and 72.3MB in the end (delta: -11.5MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.38ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 70.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.42ms. Allocated memory is still 98.6MB. Free memory was 70.1MB in the beginning and 68.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 331.46ms. Allocated memory is still 98.6MB. Free memory was 68.7MB in the beginning and 54.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 214.53ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 53.4MB in the beginning and 91.0MB in the end (delta: -37.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:12:30,445 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/systemc/token_ring.01.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 7b0a21004c99a1cc1588d43a2481960a2ce9f2cdf68e9a363306433e7d24bd30 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:12:32,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:12:32,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:12:32,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:12:32,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:12:32,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:12:32,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:12:32,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:12:32,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:12:32,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:12:32,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:12:32,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:12:32,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:12:32,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:12:32,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:12:32,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:12:32,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:12:32,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:12:32,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:12:32,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:12:32,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:12:32,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:12:32,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:12:32,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:12:32,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:12:32,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:12:32,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:12:32,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:12:32,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:12:32,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:12:32,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:12:32,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:12:32,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:12:32,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:12:32,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:12:32,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:12:32,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:12:32,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:12:32,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:12:32,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:12:32,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:12:32,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:12:32,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:12:32,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:12:32,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:12:32,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:12:32,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:12:32,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:12:32,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:12:32,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:12:32,476 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:12:32,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:12:32,477 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:12:32,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:12:32,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:12:32,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:12:32,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:12:32,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:12:32,478 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:12:32,478 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:12:32,478 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:12:32,478 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:12:32,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:12:32,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:12:32,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:12:32,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:12:32,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:12:32,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:12:32,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:12:32,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:12:32,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:12:32,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:12:32,488 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:12:32,489 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:12:32,489 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:12:32,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:12:32,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:12:32,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:12:32,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:12:32,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b0a21004c99a1cc1588d43a2481960a2ce9f2cdf68e9a363306433e7d24bd30 [2021-12-15 11:12:32,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:12:32,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:12:32,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:12:32,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:12:32,824 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:12:32,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.01.cil-1.c [2021-12-15 11:12:32,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fabf9f6cb/37b956545a924d51b9b759526664b968/FLAGa629128dc [2021-12-15 11:12:33,339 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:12:33,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.01.cil-1.c [2021-12-15 11:12:33,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fabf9f6cb/37b956545a924d51b9b759526664b968/FLAGa629128dc [2021-12-15 11:12:33,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fabf9f6cb/37b956545a924d51b9b759526664b968 [2021-12-15 11:12:33,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:12:33,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:12:33,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:12:33,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:12:33,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:12:33,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:12:33" (1/1) ... [2021-12-15 11:12:33,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9bdd1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:33, skipping insertion in model container [2021-12-15 11:12:33,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:12:33" (1/1) ... [2021-12-15 11:12:33,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:12:33,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:12:33,883 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/systemc/token_ring.01.cil-1.c[671,684] [2021-12-15 11:12:33,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:12:33,928 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:12:33,976 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/systemc/token_ring.01.cil-1.c[671,684] [2021-12-15 11:12:33,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:12:34,012 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:12:34,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34 WrapperNode [2021-12-15 11:12:34,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:12:34,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:12:34,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:12:34,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:12:34,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (1/1) ... [2021-12-15 11:12:34,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (1/1) ... [2021-12-15 11:12:34,049 INFO L137 Inliner]: procedures = 30, calls = 34, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 206 [2021-12-15 11:12:34,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:12:34,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:12:34,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:12:34,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:12:34,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (1/1) ... [2021-12-15 11:12:34,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (1/1) ... [2021-12-15 11:12:34,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (1/1) ... [2021-12-15 11:12:34,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (1/1) ... [2021-12-15 11:12:34,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (1/1) ... [2021-12-15 11:12:34,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (1/1) ... [2021-12-15 11:12:34,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (1/1) ... [2021-12-15 11:12:34,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:12:34,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:12:34,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:12:34,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:12:34,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (1/1) ... [2021-12-15 11:12:34,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:12:34,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:12:34,118 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 11:12:34,120 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 11:12:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:12:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:12:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:12:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:12:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:12:34,151 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:12:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:12:34,152 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:12:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:12:34,152 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:12:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:12:34,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:12:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:12:34,152 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:12:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:12:34,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:12:34,221 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:12:34,223 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:12:34,529 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:12:34,535 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:12:34,551 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-15 11:12:34,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:12:34 BoogieIcfgContainer [2021-12-15 11:12:34,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:12:34,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:12:34,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:12:34,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:12:34,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:12:33" (1/3) ... [2021-12-15 11:12:34,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3607be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:12:34, skipping insertion in model container [2021-12-15 11:12:34,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:34" (2/3) ... [2021-12-15 11:12:34,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3607be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:12:34, skipping insertion in model container [2021-12-15 11:12:34,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:12:34" (3/3) ... [2021-12-15 11:12:34,561 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2021-12-15 11:12:34,569 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:12:34,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:12:34,629 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:12:34,638 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 11:12:34,639 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:12:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 84 states have (on average 1.5238095238095237) internal successors, (128), 86 states have internal predecessors, (128), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-15 11:12:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-15 11:12:34,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:12:34,680 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] [2021-12-15 11:12:34,681 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:12:34,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:12:34,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1624964503, now seen corresponding path program 1 times [2021-12-15 11:12:34,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:12:34,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192446443] [2021-12-15 11:12:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:12:34,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:12:34,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:12:34,707 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 11:12:34,761 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 11:12:34,766 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 11:12:34,961 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 11:12:34,962 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 11:12:34,965 INFO L158 Benchmark]: Toolchain (without parser) took 1228.61ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.2MB in the beginning and 42.7MB in the end (delta: -13.5MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-12-15 11:12:34,966 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:12:34,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.60ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.0MB in the beginning and 53.2MB in the end (delta: -24.2MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-12-15 11:12:34,967 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.03ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 51.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:12:34,967 INFO L158 Benchmark]: Boogie Preprocessor took 36.08ms. Allocated memory is still 71.3MB. Free memory was 51.1MB in the beginning and 49.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:12:34,968 INFO L158 Benchmark]: RCFGBuilder took 466.56ms. Allocated memory is still 71.3MB. Free memory was 49.5MB in the beginning and 51.9MB in the end (delta: -2.4MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2021-12-15 11:12:34,968 INFO L158 Benchmark]: TraceAbstraction took 408.66ms. Allocated memory is still 71.3MB. Free memory was 51.4MB in the beginning and 42.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:12:34,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.60ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 29.0MB in the beginning and 53.2MB in the end (delta: -24.2MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.03ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 51.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.08ms. Allocated memory is still 71.3MB. Free memory was 51.1MB in the beginning and 49.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 466.56ms. Allocated memory is still 71.3MB. Free memory was 49.5MB in the beginning and 51.9MB in the end (delta: -2.4MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * TraceAbstraction took 408.66ms. Allocated memory is still 71.3MB. Free memory was 51.4MB in the beginning and 42.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. 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 11:12:35,018 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