./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.13.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ef6d9fd95a71cebdd37ca9ed44a21ae5d28bdad26eec5b7b5fe261fc1809e5a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:48:05,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:48:05,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:48:05,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:48:05,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:48:05,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:48:05,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:48:05,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:48:05,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:48:05,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:48:05,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:48:05,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:48:05,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:48:05,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:48:05,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:48:05,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:48:05,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:48:05,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:48:05,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:48:05,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:48:05,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:48:05,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:48:05,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:48:05,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:48:05,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:48:05,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:48:05,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:48:05,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:48:05,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:48:05,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:48:05,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:48:05,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:48:05,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:48:05,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:48:05,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:48:05,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:48:05,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:48:05,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:48:05,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:48:05,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:48:05,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:48:05,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:48:05,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:48:05,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:48:05,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:48:05,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:48:05,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:48:05,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:48:05,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:48:05,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:48:05,928 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:48:05,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:48:05,929 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:48:05,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:48:05,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:48:05,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:48:05,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:48:05,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:48:05,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:48:05,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:48:05,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:48:05,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:48:05,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:48:05,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:48:05,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:48:05,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:48:05,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:05,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:48:05,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:48:05,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:48:05,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:48:05,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:48:05,932 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:48:05,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:48:05,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:48:05,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:48:05,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ef6d9fd95a71cebdd37ca9ed44a21ae5d28bdad26eec5b7b5fe261fc1809e5a [2021-12-15 11:48:06,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:48:06,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:48:06,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:48:06,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:48:06,128 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:48:06,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.13.cil-2.c [2021-12-15 11:48:06,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f5fc93f/00268a45974a4c78bfa73a91794a6548/FLAGde967c6c5 [2021-12-15 11:48:06,873 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:48:06,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.13.cil-2.c [2021-12-15 11:48:06,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f5fc93f/00268a45974a4c78bfa73a91794a6548/FLAGde967c6c5 [2021-12-15 11:48:07,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f5fc93f/00268a45974a4c78bfa73a91794a6548 [2021-12-15 11:48:07,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:48:07,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:48:07,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:07,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:48:07,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:48:07,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:07" (1/1) ... [2021-12-15 11:48:07,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa5c1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:07, skipping insertion in model container [2021-12-15 11:48:07,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:07" (1/1) ... [2021-12-15 11:48:07,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:48:07,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:48:08,578 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_label44+token_ring.13.cil-2.c[377340,377353] [2021-12-15 11:48:08,599 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_label44+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:48:08,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:08,848 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:48:09,413 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_label44+token_ring.13.cil-2.c[377340,377353] [2021-12-15 11:48:09,434 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_label44+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:48:09,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:09,489 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:48:09,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09 WrapperNode [2021-12-15 11:48:09,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:09,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:09,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:48:09,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:48:09,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (1/1) ... [2021-12-15 11:48:09,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (1/1) ... [2021-12-15 11:48:09,795 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2021-12-15 11:48:09,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:09,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:48:09,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:48:09,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:48:09,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (1/1) ... [2021-12-15 11:48:09,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (1/1) ... [2021-12-15 11:48:09,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (1/1) ... [2021-12-15 11:48:09,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (1/1) ... [2021-12-15 11:48:10,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (1/1) ... [2021-12-15 11:48:10,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (1/1) ... [2021-12-15 11:48:10,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (1/1) ... [2021-12-15 11:48:10,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:48:10,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:48:10,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:48:10,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:48:10,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (1/1) ... [2021-12-15 11:48:10,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:10,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:48:10,292 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 11:48:10,325 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 11:48:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:48:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:48:10,348 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:48:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:48:10,348 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:48:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:48:10,349 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:48:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:48:10,349 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:48:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:48:10,349 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:48:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:48:10,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:48:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:48:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:48:10,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:48:10,492 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:48:10,493 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:48:15,454 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:48:15,477 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:48:15,477 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-15 11:48:15,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:15 BoogieIcfgContainer [2021-12-15 11:48:15,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:48:15,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:48:15,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:48:15,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:48:15,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:48:07" (1/3) ... [2021-12-15 11:48:15,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e5082d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:15, skipping insertion in model container [2021-12-15 11:48:15,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:09" (2/3) ... [2021-12-15 11:48:15,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e5082d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:15, skipping insertion in model container [2021-12-15 11:48:15,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:15" (3/3) ... [2021-12-15 11:48:15,487 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.13.cil-2.c [2021-12-15 11:48:15,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:48:15,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:48:15,527 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:48:15,532 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 11:48:15,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:48:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-15 11:48:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-15 11:48:15,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:48:15,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:15,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:48:15,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:48:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-15 11:48:15,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:48:15,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214692324] [2021-12-15 11:48:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:48:15,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:48:15,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:48:15,647 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 11:48:15,655 INFO L158 Benchmark]: Toolchain (without parser) took 8467.07ms. Allocated memory was 100.7MB in the beginning and 855.6MB in the end (delta: 755.0MB). Free memory was 55.4MB in the beginning and 382.1MB in the end (delta: -326.7MB). Peak memory consumption was 428.6MB. Max. memory is 16.1GB. [2021-12-15 11:48:15,655 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 100.7MB. Free memory was 57.7MB in the beginning and 57.7MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:48:15,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2303.46ms. Allocated memory was 100.7MB in the beginning and 218.1MB in the end (delta: 117.4MB). Free memory was 55.4MB in the beginning and 113.5MB in the end (delta: -58.1MB). Peak memory consumption was 101.6MB. Max. memory is 16.1GB. [2021-12-15 11:48:15,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 305.01ms. Allocated memory is still 218.1MB. Free memory was 113.5MB in the beginning and 67.6MB in the end (delta: 45.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2021-12-15 11:48:15,658 INFO L158 Benchmark]: Boogie Preprocessor took 446.39ms. Allocated memory was 218.1MB in the beginning and 436.2MB in the end (delta: 218.1MB). Free memory was 67.6MB in the beginning and 283.4MB in the end (delta: -215.8MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2021-12-15 11:48:15,662 INFO L158 Benchmark]: RCFGBuilder took 5237.58ms. Allocated memory was 436.2MB in the beginning and 855.6MB in the end (delta: 419.4MB). Free memory was 283.4MB in the beginning and 405.2MB in the end (delta: -121.8MB). Peak memory consumption was 300.7MB. Max. memory is 16.1GB. [2021-12-15 11:48:15,662 INFO L158 Benchmark]: TraceAbstraction took 170.47ms. Allocated memory is still 855.6MB. Free memory was 404.2MB in the beginning and 382.1MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 11:48:15,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 100.7MB. Free memory was 57.7MB in the beginning and 57.7MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2303.46ms. Allocated memory was 100.7MB in the beginning and 218.1MB in the end (delta: 117.4MB). Free memory was 55.4MB in the beginning and 113.5MB in the end (delta: -58.1MB). Peak memory consumption was 101.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 305.01ms. Allocated memory is still 218.1MB. Free memory was 113.5MB in the beginning and 67.6MB in the end (delta: 45.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 446.39ms. Allocated memory was 218.1MB in the beginning and 436.2MB in the end (delta: 218.1MB). Free memory was 67.6MB in the beginning and 283.4MB in the end (delta: -215.8MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * RCFGBuilder took 5237.58ms. Allocated memory was 436.2MB in the beginning and 855.6MB in the end (delta: 419.4MB). Free memory was 283.4MB in the beginning and 405.2MB in the end (delta: -121.8MB). Peak memory consumption was 300.7MB. Max. memory is 16.1GB. * TraceAbstraction took 170.47ms. Allocated memory is still 855.6MB. Free memory was 404.2MB in the beginning and 382.1MB 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 11:48:15,698 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_label44+token_ring.13.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ef6d9fd95a71cebdd37ca9ed44a21ae5d28bdad26eec5b7b5fe261fc1809e5a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:48:17,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:48:17,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:48:17,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:48:17,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:48:17,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:48:17,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:48:17,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:48:17,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:48:17,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:48:17,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:48:17,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:48:17,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:48:17,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:48:17,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:48:17,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:48:17,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:48:17,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:48:17,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:48:17,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:48:17,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:48:17,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:48:17,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:48:17,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:48:17,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:48:17,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:48:17,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:48:17,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:48:17,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:48:17,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:48:17,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:48:17,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:48:17,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:48:17,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:48:17,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:48:17,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:48:17,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:48:17,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:48:17,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:48:17,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:48:17,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:48:17,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:48:17,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:48:17,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:48:17,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:48:17,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:48:17,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:48:17,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:48:17,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:48:17,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:48:17,507 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:48:17,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:48:17,507 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:48:17,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:48:17,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:48:17,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:48:17,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:48:17,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:48:17,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:48:17,508 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:48:17,508 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:48:17,508 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:48:17,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:48:17,508 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:48:17,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:48:17,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:48:17,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:48:17,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:48:17,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:17,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:48:17,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:48:17,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:48:17,514 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:48:17,514 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:48:17,514 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:48:17,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:48:17,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:48:17,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:48:17,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:48:17,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ef6d9fd95a71cebdd37ca9ed44a21ae5d28bdad26eec5b7b5fe261fc1809e5a [2021-12-15 11:48:17,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:48:17,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:48:17,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:48:17,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:48:17,771 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:48:17,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.13.cil-2.c [2021-12-15 11:48:17,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be95b575a/17a6304c0fac4fb0a2d69c1e94fc91ac/FLAG046599985 [2021-12-15 11:48:18,584 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:48:18,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.13.cil-2.c [2021-12-15 11:48:18,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be95b575a/17a6304c0fac4fb0a2d69c1e94fc91ac/FLAG046599985 [2021-12-15 11:48:19,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be95b575a/17a6304c0fac4fb0a2d69c1e94fc91ac [2021-12-15 11:48:19,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:48:19,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:48:19,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:19,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:48:19,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:48:19,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:19" (1/1) ... [2021-12-15 11:48:19,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be5ce77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:19, skipping insertion in model container [2021-12-15 11:48:19,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:19" (1/1) ... [2021-12-15 11:48:19,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:48:19,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:48:20,588 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_label44+token_ring.13.cil-2.c[377340,377353] [2021-12-15 11:48:20,610 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_label44+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:48:20,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:20,931 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:48:21,684 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_label44+token_ring.13.cil-2.c[377340,377353] [2021-12-15 11:48:21,693 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_label44+token_ring.13.cil-2.c[383339,383352] [2021-12-15 11:48:21,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:21,775 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:48:21,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21 WrapperNode [2021-12-15 11:48:21,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:21,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:21,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:48:21,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:48:21,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (1/1) ... [2021-12-15 11:48:21,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (1/1) ... [2021-12-15 11:48:22,117 INFO L137 Inliner]: procedures = 71, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13213 [2021-12-15 11:48:22,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:22,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:48:22,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:48:22,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:48:22,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (1/1) ... [2021-12-15 11:48:22,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (1/1) ... [2021-12-15 11:48:22,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (1/1) ... [2021-12-15 11:48:22,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (1/1) ... [2021-12-15 11:48:22,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (1/1) ... [2021-12-15 11:48:22,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (1/1) ... [2021-12-15 11:48:22,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (1/1) ... [2021-12-15 11:48:22,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:48:22,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:48:22,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:48:22,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:48:22,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (1/1) ... [2021-12-15 11:48:22,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:22,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:48:22,643 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 11:48:22,704 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 11:48:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:48:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:48:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:48:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:48:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:48:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:48:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:48:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:48:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:48:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:48:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:48:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:48:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:48:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:48:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:48:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:48:22,904 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:48:22,905 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:48:29,442 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:48:29,466 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:48:29,466 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-15 11:48:29,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:29 BoogieIcfgContainer [2021-12-15 11:48:29,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:48:29,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:48:29,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:48:29,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:48:29,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:48:19" (1/3) ... [2021-12-15 11:48:29,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189df308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:29, skipping insertion in model container [2021-12-15 11:48:29,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:21" (2/3) ... [2021-12-15 11:48:29,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189df308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:29, skipping insertion in model container [2021-12-15 11:48:29,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:29" (3/3) ... [2021-12-15 11:48:29,477 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.13.cil-2.c [2021-12-15 11:48:29,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:48:29,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:48:29,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:48:29,528 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 11:48:29,528 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:48:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-15 11:48:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-15 11:48:29,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:48:29,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:29,600 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:48:29,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:48:29,603 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-15 11:48:29,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:48:29,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977837748] [2021-12-15 11:48:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:48:29,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:48:29,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:48:29,615 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 11:48:29,618 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 11:48:29,690 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 11:48:29,882 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 11:48:29,883 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 11:48:29,888 INFO L158 Benchmark]: Toolchain (without parser) took 10751.74ms. Allocated memory was 69.2MB in the beginning and 910.2MB in the end (delta: 841.0MB). Free memory was 37.3MB in the beginning and 503.2MB in the end (delta: -465.9MB). Peak memory consumption was 373.1MB. Max. memory is 16.1GB. [2021-12-15 11:48:29,888 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:48:29,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2637.89ms. Allocated memory was 69.2MB in the beginning and 222.3MB in the end (delta: 153.1MB). Free memory was 37.0MB in the beginning and 116.2MB in the end (delta: -79.2MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. [2021-12-15 11:48:29,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 340.87ms. Allocated memory is still 222.3MB. Free memory was 116.2MB in the beginning and 75.7MB in the end (delta: 40.4MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. [2021-12-15 11:48:29,890 INFO L158 Benchmark]: Boogie Preprocessor took 456.33ms. Allocated memory was 222.3MB in the beginning and 455.1MB in the end (delta: 232.8MB). Free memory was 75.7MB in the beginning and 288.7MB in the end (delta: -212.9MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2021-12-15 11:48:29,894 INFO L158 Benchmark]: RCFGBuilder took 6896.24ms. Allocated memory was 455.1MB in the beginning and 910.2MB in the end (delta: 455.1MB). Free memory was 288.7MB in the beginning and 530.5MB in the end (delta: -241.8MB). Peak memory consumption was 429.7MB. Max. memory is 16.1GB. [2021-12-15 11:48:29,894 INFO L158 Benchmark]: TraceAbstraction took 413.10ms. Allocated memory is still 910.2MB. Free memory was 530.5MB in the beginning and 503.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-12-15 11:48:29,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2637.89ms. Allocated memory was 69.2MB in the beginning and 222.3MB in the end (delta: 153.1MB). Free memory was 37.0MB in the beginning and 116.2MB in the end (delta: -79.2MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 340.87ms. Allocated memory is still 222.3MB. Free memory was 116.2MB in the beginning and 75.7MB in the end (delta: 40.4MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 456.33ms. Allocated memory was 222.3MB in the beginning and 455.1MB in the end (delta: 232.8MB). Free memory was 75.7MB in the beginning and 288.7MB in the end (delta: -212.9MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. * RCFGBuilder took 6896.24ms. Allocated memory was 455.1MB in the beginning and 910.2MB in the end (delta: 455.1MB). Free memory was 288.7MB in the beginning and 530.5MB in the end (delta: -241.8MB). Peak memory consumption was 429.7MB. Max. memory is 16.1GB. * TraceAbstraction took 413.10ms. Allocated memory is still 910.2MB. Free memory was 530.5MB in the beginning and 503.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. 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 11:48:29,929 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