./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.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_label43+token_ring.05.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 7ee209640ee994f311a04b9c2d813fadfd34b19e8b71a748e88ebcbbe5883af1 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:46:58,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:46:58,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:46:58,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:46:58,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:46:58,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:46:58,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:46:58,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:46:58,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:46:58,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:46:58,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:46:58,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:46:58,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:46:58,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:46:58,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:46:58,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:46:58,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:46:58,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:46:58,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:46:58,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:46:58,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:46:58,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:46:58,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:46:58,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:46:58,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:46:58,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:46:58,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:46:58,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:46:58,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:46:58,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:46:58,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:46:58,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:46:58,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:46:58,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:46:58,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:46:58,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:46:58,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:46:58,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:46:58,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:46:58,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:46:58,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:46:58,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:46:58,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:46:58,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:46:58,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:46:58,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:46:58,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:46:58,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:46:58,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:46:58,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:46:58,120 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:46:58,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:46:58,121 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:46:58,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:46:58,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:46:58,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:46:58,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:46:58,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:46:58,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:46:58,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:46:58,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:46:58,122 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:46:58,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:46:58,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:46:58,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:46:58,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:46:58,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:46:58,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:46:58,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:46:58,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:46:58,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:46:58,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:46:58,124 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:46:58,124 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:46:58,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:46:58,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:46:58,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ee209640ee994f311a04b9c2d813fadfd34b19e8b71a748e88ebcbbe5883af1 [2021-12-15 11:46:58,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:46:58,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:46:58,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:46:58,346 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:46:58,350 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:46:58,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c [2021-12-15 11:46:58,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b8236b8a/609d7e1d6e794179b0d8de601c29cd62/FLAG14fcaabe5 [2021-12-15 11:46:59,038 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:46:59,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c [2021-12-15 11:46:59,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b8236b8a/609d7e1d6e794179b0d8de601c29cd62/FLAG14fcaabe5 [2021-12-15 11:46:59,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b8236b8a/609d7e1d6e794179b0d8de601c29cd62 [2021-12-15 11:46:59,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:46:59,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:46:59,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:46:59,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:46:59,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:46:59,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:46:59,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f7bb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:46:59, skipping insertion in model container [2021-12-15 11:46:59,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:46:59" (1/1) ... [2021-12-15 11:46:59,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:46:59,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:47:00,743 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_label43+token_ring.05.cil-2.c[381679,381692] [2021-12-15 11:47:00,761 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_label43+token_ring.05.cil-2.c[383339,383352] [2021-12-15 11:47:00,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:00,899 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:47:01,493 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_label43+token_ring.05.cil-2.c[381679,381692] [2021-12-15 11:47:01,502 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_label43+token_ring.05.cil-2.c[383339,383352] [2021-12-15 11:47:01,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:01,572 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:47:01,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01 WrapperNode [2021-12-15 11:47:01,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:01,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:01,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:47:01,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:47:01,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (1/1) ... [2021-12-15 11:47:01,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (1/1) ... [2021-12-15 11:47:01,962 INFO L137 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12798 [2021-12-15 11:47:01,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:01,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:47:01,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:47:01,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:47:01,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (1/1) ... [2021-12-15 11:47:01,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (1/1) ... [2021-12-15 11:47:02,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (1/1) ... [2021-12-15 11:47:02,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (1/1) ... [2021-12-15 11:47:02,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (1/1) ... [2021-12-15 11:47:02,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (1/1) ... [2021-12-15 11:47:02,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (1/1) ... [2021-12-15 11:47:02,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:47:02,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:47:02,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:47:02,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:47:02,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (1/1) ... [2021-12-15 11:47:02,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:02,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:47:02,592 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 11:47:02,637 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 11:47:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:47:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:47:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:47:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:47:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:47:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:47:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:47:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:47:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:47:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:47:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:47:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:47:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:47:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:47:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:47:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:47:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:47:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:47:02,739 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:47:02,740 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:47:07,515 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:47:07,538 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:47:07,538 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-15 11:47:07,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:07 BoogieIcfgContainer [2021-12-15 11:47:07,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:47:07,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:47:07,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:47:07,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:47:07,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:46:59" (1/3) ... [2021-12-15 11:47:07,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760f1848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:07, skipping insertion in model container [2021-12-15 11:47:07,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:01" (2/3) ... [2021-12-15 11:47:07,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760f1848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:07, skipping insertion in model container [2021-12-15 11:47:07,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:07" (3/3) ... [2021-12-15 11:47:07,552 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.05.cil-2.c [2021-12-15 11:47:07,557 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:47:07,557 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:47:07,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:47:07,597 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 11:47:07,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:47:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-15 11:47:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-15 11:47:07,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:47:07,654 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] [2021-12-15 11:47:07,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:47:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:47:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2021-12-15 11:47:07,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:47:07,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677472703] [2021-12-15 11:47:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:47:07,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:47:07,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:47:07,710 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 11:47:07,718 INFO L158 Benchmark]: Toolchain (without parser) took 8261.48ms. Allocated memory was 90.2MB in the beginning and 926.9MB in the end (delta: 836.8MB). Free memory was 53.1MB in the beginning and 699.5MB in the end (delta: -646.4MB). Peak memory consumption was 192.4MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,718 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 90.2MB. Free memory was 63.6MB in the beginning and 63.5MB in the end (delta: 42.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:47:07,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2115.65ms. Allocated memory was 90.2MB in the beginning and 201.3MB in the end (delta: 111.1MB). Free memory was 52.9MB in the beginning and 103.1MB in the end (delta: -50.2MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 389.04ms. Allocated memory is still 201.3MB. Free memory was 103.1MB in the beginning and 55.7MB in the end (delta: 47.4MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,720 INFO L158 Benchmark]: Boogie Preprocessor took 588.75ms. Allocated memory was 201.3MB in the beginning and 450.9MB in the end (delta: 249.6MB). Free memory was 55.7MB in the beginning and 293.9MB in the end (delta: -238.2MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,725 INFO L158 Benchmark]: RCFGBuilder took 4991.12ms. Allocated memory was 450.9MB in the beginning and 926.9MB in the end (delta: 476.1MB). Free memory was 293.9MB in the beginning and 720.6MB in the end (delta: -426.6MB). Peak memory consumption was 312.6MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,725 INFO L158 Benchmark]: TraceAbstraction took 169.88ms. Allocated memory is still 926.9MB. Free memory was 720.6MB in the beginning and 699.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 11:47:07,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 90.2MB. Free memory was 63.6MB in the beginning and 63.5MB in the end (delta: 42.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2115.65ms. Allocated memory was 90.2MB in the beginning and 201.3MB in the end (delta: 111.1MB). Free memory was 52.9MB in the beginning and 103.1MB in the end (delta: -50.2MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 389.04ms. Allocated memory is still 201.3MB. Free memory was 103.1MB in the beginning and 55.7MB in the end (delta: 47.4MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 588.75ms. Allocated memory was 201.3MB in the beginning and 450.9MB in the end (delta: 249.6MB). Free memory was 55.7MB in the beginning and 293.9MB in the end (delta: -238.2MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * RCFGBuilder took 4991.12ms. Allocated memory was 450.9MB in the beginning and 926.9MB in the end (delta: 476.1MB). Free memory was 293.9MB in the beginning and 720.6MB in the end (delta: -426.6MB). Peak memory consumption was 312.6MB. Max. memory is 16.1GB. * TraceAbstraction took 169.88ms. Allocated memory is still 926.9MB. Free memory was 720.6MB in the beginning and 699.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. 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 11:47:07,761 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_label43+token_ring.05.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 7ee209640ee994f311a04b9c2d813fadfd34b19e8b71a748e88ebcbbe5883af1 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:47:09,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:47:09,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:47:09,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:47:09,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:47:09,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:47:09,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:47:09,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:47:09,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:47:09,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:47:09,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:47:09,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:47:09,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:47:09,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:47:09,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:47:09,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:47:09,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:47:09,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:47:09,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:47:09,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:47:09,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:47:09,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:47:09,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:47:09,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:47:09,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:47:09,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:47:09,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:47:09,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:47:09,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:47:09,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:47:09,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:47:09,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:47:09,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:47:09,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:47:09,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:47:09,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:47:09,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:47:09,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:47:09,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:47:09,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:47:09,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:47:09,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:47:09,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:47:09,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:47:09,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:47:09,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:47:09,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:47:09,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:47:09,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:47:09,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:47:09,719 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:47:09,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:47:09,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:47:09,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:47:09,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:47:09,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:47:09,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:47:09,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:47:09,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:47:09,721 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:47:09,721 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:47:09,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:47:09,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:47:09,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:47:09,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:47:09,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:47:09,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:47:09,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:47:09,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:09,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:47:09,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:47:09,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:47:09,723 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:47:09,723 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:47:09,723 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:47:09,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:47:09,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:47:09,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:47:09,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:47:09,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ee209640ee994f311a04b9c2d813fadfd34b19e8b71a748e88ebcbbe5883af1 [2021-12-15 11:47:09,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:47:10,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:47:10,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:47:10,006 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:47:10,007 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:47:10,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c [2021-12-15 11:47:10,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb32b5c0/7b9ddfd75f9e41e6967cfb4ea14f4d59/FLAGb2a8d5ce6 [2021-12-15 11:47:10,744 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:47:10,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c [2021-12-15 11:47:10,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb32b5c0/7b9ddfd75f9e41e6967cfb4ea14f4d59/FLAGb2a8d5ce6 [2021-12-15 11:47:10,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb32b5c0/7b9ddfd75f9e41e6967cfb4ea14f4d59 [2021-12-15 11:47:10,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:47:10,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:47:10,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:10,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:47:10,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:47:10,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:10,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e52fc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:10, skipping insertion in model container [2021-12-15 11:47:10,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:47:10" (1/1) ... [2021-12-15 11:47:10,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:47:11,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:47:12,563 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_label43+token_ring.05.cil-2.c[381679,381692] [2021-12-15 11:47:12,582 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_label43+token_ring.05.cil-2.c[383339,383352] [2021-12-15 11:47:12,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:12,727 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:47:13,332 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_label43+token_ring.05.cil-2.c[381679,381692] [2021-12-15 11:47:13,337 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_label43+token_ring.05.cil-2.c[383339,383352] [2021-12-15 11:47:13,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:47:13,412 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:47:13,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13 WrapperNode [2021-12-15 11:47:13,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:47:13,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:13,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:47:13,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:47:13,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (1/1) ... [2021-12-15 11:47:13,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (1/1) ... [2021-12-15 11:47:13,825 INFO L137 Inliner]: procedures = 55, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12769 [2021-12-15 11:47:13,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:47:13,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:47:13,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:47:13,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:47:13,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (1/1) ... [2021-12-15 11:47:13,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (1/1) ... [2021-12-15 11:47:13,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (1/1) ... [2021-12-15 11:47:13,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (1/1) ... [2021-12-15 11:47:14,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (1/1) ... [2021-12-15 11:47:14,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (1/1) ... [2021-12-15 11:47:14,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (1/1) ... [2021-12-15 11:47:14,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:47:14,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:47:14,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:47:14,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:47:14,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (1/1) ... [2021-12-15 11:47:14,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:47:14,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:47:14,281 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 11:47:14,341 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 11:47:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:47:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:47:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:47:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:47:14,364 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:47:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:47:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:47:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:47:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:47:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:47:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:47:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:47:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:47:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:47:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:47:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:47:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:47:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:47:14,544 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:47:14,545 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:47:20,710 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:47:20,740 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:47:20,740 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-15 11:47:20,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:20 BoogieIcfgContainer [2021-12-15 11:47:20,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:47:20,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:47:20,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:47:20,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:47:20,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:47:10" (1/3) ... [2021-12-15 11:47:20,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795f963d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:20, skipping insertion in model container [2021-12-15 11:47:20,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:47:13" (2/3) ... [2021-12-15 11:47:20,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795f963d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:47:20, skipping insertion in model container [2021-12-15 11:47:20,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:47:20" (3/3) ... [2021-12-15 11:47:20,773 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.05.cil-2.c [2021-12-15 11:47:20,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:47:20,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:47:20,823 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:47:20,828 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 11:47:20,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:47:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-15 11:47:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-15 11:47:20,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:47:20,903 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] [2021-12-15 11:47:20,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:47:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:47:20,909 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2021-12-15 11:47:20,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:47:20,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894503059] [2021-12-15 11:47:20,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:47:20,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:47:20,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:47:20,922 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 11:47:20,927 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 11:47:20,996 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 11:47:21,192 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 11:47:21,193 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 11:47:21,197 INFO L158 Benchmark]: Toolchain (without parser) took 10362.66ms. Allocated memory was 58.7MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 22.5MB in the beginning and 683.6MB in the end (delta: -661.2MB). Peak memory consumption was 458.4MB. Max. memory is 16.1GB. [2021-12-15 11:47:21,198 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 40.0MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:47:21,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2577.55ms. Allocated memory was 58.7MB in the beginning and 257.9MB in the end (delta: 199.2MB). Free memory was 22.2MB in the beginning and 162.8MB in the end (delta: -140.7MB). Peak memory consumption was 121.4MB. Max. memory is 16.1GB. [2021-12-15 11:47:21,198 INFO L158 Benchmark]: Boogie Procedure Inliner took 411.57ms. Allocated memory is still 257.9MB. Free memory was 162.8MB in the beginning and 127.3MB in the end (delta: 35.6MB). Peak memory consumption was 104.8MB. Max. memory is 16.1GB. [2021-12-15 11:47:21,199 INFO L158 Benchmark]: Boogie Preprocessor took 392.64ms. Allocated memory was 257.9MB in the beginning and 589.3MB in the end (delta: 331.4MB). Free memory was 127.3MB in the beginning and 431.5MB in the end (delta: -304.2MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. [2021-12-15 11:47:21,199 INFO L158 Benchmark]: RCFGBuilder took 6531.61ms. Allocated memory was 589.3MB in the beginning and 1.2GB in the end (delta: 589.3MB). Free memory was 431.5MB in the beginning and 708.8MB in the end (delta: -277.3MB). Peak memory consumption was 325.1MB. Max. memory is 16.1GB. [2021-12-15 11:47:21,200 INFO L158 Benchmark]: TraceAbstraction took 443.02ms. Allocated memory is still 1.2GB. Free memory was 708.8MB in the beginning and 683.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:47:21,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 40.0MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2577.55ms. Allocated memory was 58.7MB in the beginning and 257.9MB in the end (delta: 199.2MB). Free memory was 22.2MB in the beginning and 162.8MB in the end (delta: -140.7MB). Peak memory consumption was 121.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 411.57ms. Allocated memory is still 257.9MB. Free memory was 162.8MB in the beginning and 127.3MB in the end (delta: 35.6MB). Peak memory consumption was 104.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 392.64ms. Allocated memory was 257.9MB in the beginning and 589.3MB in the end (delta: 331.4MB). Free memory was 127.3MB in the beginning and 431.5MB in the end (delta: -304.2MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. * RCFGBuilder took 6531.61ms. Allocated memory was 589.3MB in the beginning and 1.2GB in the end (delta: 589.3MB). Free memory was 431.5MB in the beginning and 708.8MB in the end (delta: -277.3MB). Peak memory consumption was 325.1MB. Max. memory is 16.1GB. * TraceAbstraction took 443.02ms. Allocated memory is still 1.2GB. Free memory was 708.8MB in the beginning and 683.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:47:21,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable