./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.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 ead4d47009bf2f1ade65f6eacfdab211d65347e20b879f4822b8ceaab9ef42cd --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:51:25,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:51:25,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:51:25,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:51:25,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:51:25,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:51:25,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:51:25,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:51:25,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:51:25,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:51:25,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:51:25,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:51:25,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:51:25,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:51:25,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:51:25,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:51:25,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:51:25,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:51:25,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:51:25,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:51:25,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:51:25,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:51:25,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:51:25,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:51:25,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:51:25,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:51:25,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:51:25,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:51:25,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:51:25,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:51:25,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:51:25,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:51:25,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:51:25,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:51:25,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:51:25,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:51:25,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:51:25,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:51:25,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:51:25,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:51:25,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:51:25,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:51:25,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:51:25,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:51:25,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:51:25,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:51:25,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:51:25,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:51:25,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:51:25,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:51:25,145 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:51:25,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:51:25,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:51:25,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:51:25,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:51:25,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:51:25,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:51:25,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:51:25,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:51:25,147 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:51:25,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:51:25,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:51:25,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:51:25,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:51:25,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:51:25,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:51:25,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:25,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:51:25,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:51:25,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:51:25,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:51:25,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:51:25,149 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:51:25,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:51:25,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:51:25,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:51:25,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ead4d47009bf2f1ade65f6eacfdab211d65347e20b879f4822b8ceaab9ef42cd [2021-12-15 11:51:25,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:51:25,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:51:25,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:51:25,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:51:25,369 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:51:25,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c [2021-12-15 11:51:25,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4df032c2a/e039e2e419b44c29afb04fce8714385b/FLAG78993c6a1 [2021-12-15 11:51:26,122 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:51:26,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c [2021-12-15 11:51:26,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4df032c2a/e039e2e419b44c29afb04fce8714385b/FLAG78993c6a1 [2021-12-15 11:51:26,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4df032c2a/e039e2e419b44c29afb04fce8714385b [2021-12-15 11:51:26,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:51:26,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:51:26,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:26,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:51:26,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:51:26,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:26" (1/1) ... [2021-12-15 11:51:26,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d29fadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:26, skipping insertion in model container [2021-12-15 11:51:26,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:26" (1/1) ... [2021-12-15 11:51:26,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:51:26,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:51:27,800 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[380593,380606] [2021-12-15 11:51:27,820 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[383339,383352] [2021-12-15 11:51:28,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:28,015 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:51:28,619 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[380593,380606] [2021-12-15 11:51:28,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[383339,383352] [2021-12-15 11:51:28,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:28,687 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:51:28,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28 WrapperNode [2021-12-15 11:51:28,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:28,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:28,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:51:28,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:51:28,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (1/1) ... [2021-12-15 11:51:28,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (1/1) ... [2021-12-15 11:51:29,012 INFO L137 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2021-12-15 11:51:29,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:29,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:51:29,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:51:29,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:51:29,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (1/1) ... [2021-12-15 11:51:29,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (1/1) ... [2021-12-15 11:51:29,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (1/1) ... [2021-12-15 11:51:29,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (1/1) ... [2021-12-15 11:51:29,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (1/1) ... [2021-12-15 11:51:29,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (1/1) ... [2021-12-15 11:51:29,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (1/1) ... [2021-12-15 11:51:29,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:51:29,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:51:29,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:51:29,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:51:29,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (1/1) ... [2021-12-15 11:51:29,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:29,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:51:29,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:51:29,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:51:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:51:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:51:29,550 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:51:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:51:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:51:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:51:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:51:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:51:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:51:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:51:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:51:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:51:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:51:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:51:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:51:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:51:29,745 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:51:29,746 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:51:34,425 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:51:34,521 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:51:34,521 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-15 11:51:34,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:34 BoogieIcfgContainer [2021-12-15 11:51:34,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:51:34,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:51:34,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:51:34,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:51:34,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:51:26" (1/3) ... [2021-12-15 11:51:34,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5521fe45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:34, skipping insertion in model container [2021-12-15 11:51:34,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:28" (2/3) ... [2021-12-15 11:51:34,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5521fe45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:34, skipping insertion in model container [2021-12-15 11:51:34,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:34" (3/3) ... [2021-12-15 11:51:34,532 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.10.cil-2.c [2021-12-15 11:51:34,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:51:34,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:51:34,587 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:51:34,591 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:51:34,591 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:51:34,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-15 11:51:34,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-15 11:51:34,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:51:34,645 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] [2021-12-15 11:51:34,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:51:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:51:34,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2021-12-15 11:51:34,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:51:34,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069124912] [2021-12-15 11:51:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:51:34,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:51:34,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:51:34,696 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:51:34,700 INFO L158 Benchmark]: Toolchain (without parser) took 8247.61ms. Allocated memory was 109.1MB in the beginning and 784.3MB in the end (delta: 675.3MB). Free memory was 68.5MB in the beginning and 574.9MB in the end (delta: -506.4MB). Peak memory consumption was 169.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:34,700 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:51:34,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2231.60ms. Allocated memory was 109.1MB in the beginning and 266.3MB in the end (delta: 157.3MB). Free memory was 68.2MB in the beginning and 153.4MB in the end (delta: -85.3MB). Peak memory consumption was 129.3MB. Max. memory is 16.1GB. [2021-12-15 11:51:34,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 324.13ms. Allocated memory is still 266.3MB. Free memory was 153.4MB in the beginning and 124.0MB in the end (delta: 29.4MB). Peak memory consumption was 90.2MB. Max. memory is 16.1GB. [2021-12-15 11:51:34,702 INFO L158 Benchmark]: Boogie Preprocessor took 377.46ms. Allocated memory was 266.3MB in the beginning and 532.7MB in the end (delta: 266.3MB). Free memory was 123.0MB in the beginning and 368.4MB in the end (delta: -245.4MB). Peak memory consumption was 89.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:34,702 INFO L158 Benchmark]: RCFGBuilder took 5134.23ms. Allocated memory was 532.7MB in the beginning and 784.3MB in the end (delta: 251.7MB). Free memory was 368.4MB in the beginning and 598.0MB in the end (delta: -229.6MB). Peak memory consumption was 442.5MB. Max. memory is 16.1GB. [2021-12-15 11:51:34,703 INFO L158 Benchmark]: TraceAbstraction took 171.33ms. Allocated memory is still 784.3MB. Free memory was 597.0MB in the beginning and 574.9MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:34,705 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2231.60ms. Allocated memory was 109.1MB in the beginning and 266.3MB in the end (delta: 157.3MB). Free memory was 68.2MB in the beginning and 153.4MB in the end (delta: -85.3MB). Peak memory consumption was 129.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 324.13ms. Allocated memory is still 266.3MB. Free memory was 153.4MB in the beginning and 124.0MB in the end (delta: 29.4MB). Peak memory consumption was 90.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 377.46ms. Allocated memory was 266.3MB in the beginning and 532.7MB in the end (delta: 266.3MB). Free memory was 123.0MB in the beginning and 368.4MB in the end (delta: -245.4MB). Peak memory consumption was 89.1MB. Max. memory is 16.1GB. * RCFGBuilder took 5134.23ms. Allocated memory was 532.7MB in the beginning and 784.3MB in the end (delta: 251.7MB). Free memory was 368.4MB in the beginning and 598.0MB in the end (delta: -229.6MB). Peak memory consumption was 442.5MB. Max. memory is 16.1GB. * TraceAbstraction took 171.33ms. Allocated memory is still 784.3MB. Free memory was 597.0MB in the beginning and 574.9MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:51:34,729 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.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 ead4d47009bf2f1ade65f6eacfdab211d65347e20b879f4822b8ceaab9ef42cd --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:51:36,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:51:36,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:51:36,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:51:36,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:51:36,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:51:36,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:51:36,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:51:36,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:51:36,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:51:36,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:51:36,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:51:36,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:51:36,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:51:36,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:51:36,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:51:36,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:51:36,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:51:36,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:51:36,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:51:36,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:51:36,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:51:36,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:51:36,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:51:36,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:51:36,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:51:36,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:51:36,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:51:36,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:51:36,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:51:36,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:51:36,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:51:36,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:51:36,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:51:36,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:51:36,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:51:36,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:51:36,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:51:36,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:51:36,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:51:36,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:51:36,554 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:51:36,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:51:36,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:51:36,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:51:36,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:51:36,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:51:36,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:51:36,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:51:36,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:51:36,585 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:51:36,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:51:36,586 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:51:36,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:51:36,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:51:36,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:51:36,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:51:36,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:51:36,587 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:51:36,587 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:51:36,587 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:51:36,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:51:36,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:51:36,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:51:36,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:51:36,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:51:36,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:51:36,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:51:36,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:36,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:51:36,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:51:36,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:51:36,592 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:51:36,592 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:51:36,593 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:51:36,593 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:51:36,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:51:36,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:51:36,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:51:36,594 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ead4d47009bf2f1ade65f6eacfdab211d65347e20b879f4822b8ceaab9ef42cd [2021-12-15 11:51:36,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:51:36,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:51:36,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:51:36,879 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:51:36,879 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:51:36,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c [2021-12-15 11:51:36,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546e5788a/d5e40ab5251d45f69902602382ef6ccd/FLAG61e6b0fa7 [2021-12-15 11:51:37,618 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:51:37,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c [2021-12-15 11:51:37,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546e5788a/d5e40ab5251d45f69902602382ef6ccd/FLAG61e6b0fa7 [2021-12-15 11:51:38,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546e5788a/d5e40ab5251d45f69902602382ef6ccd [2021-12-15 11:51:38,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:51:38,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:51:38,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:38,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:51:38,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:51:38,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:38" (1/1) ... [2021-12-15 11:51:38,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3a2fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:38, skipping insertion in model container [2021-12-15 11:51:38,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:38" (1/1) ... [2021-12-15 11:51:38,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:51:38,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:51:39,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[380593,380606] [2021-12-15 11:51:39,534 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[383339,383352] [2021-12-15 11:51:39,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:39,724 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:51:40,379 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[380593,380606] [2021-12-15 11:51:40,410 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[383339,383352] [2021-12-15 11:51:40,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:40,498 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:51:40,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40 WrapperNode [2021-12-15 11:51:40,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:40,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:40,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:51:40,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:51:40,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (1/1) ... [2021-12-15 11:51:40,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (1/1) ... [2021-12-15 11:51:40,987 INFO L137 Inliner]: procedures = 65, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13045 [2021-12-15 11:51:40,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:40,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:51:40,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:51:40,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:51:40,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (1/1) ... [2021-12-15 11:51:40,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (1/1) ... [2021-12-15 11:51:41,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (1/1) ... [2021-12-15 11:51:41,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (1/1) ... [2021-12-15 11:51:41,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (1/1) ... [2021-12-15 11:51:41,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (1/1) ... [2021-12-15 11:51:41,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (1/1) ... [2021-12-15 11:51:41,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:51:41,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:51:41,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:51:41,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:51:41,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (1/1) ... [2021-12-15 11:51:41,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:41,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:51:41,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:51:41,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:51:41,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:51:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:51:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:51:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:51:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:51:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:51:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:51:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:51:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:51:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:51:41,464 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:51:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:51:41,464 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:51:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:51:41,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:51:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:51:41,593 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:51:41,594 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:51:47,906 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:51:47,931 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:51:47,931 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-15 11:51:47,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:47 BoogieIcfgContainer [2021-12-15 11:51:47,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:51:47,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:51:47,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:51:47,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:51:47,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:51:38" (1/3) ... [2021-12-15 11:51:47,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea67b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:47, skipping insertion in model container [2021-12-15 11:51:47,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:40" (2/3) ... [2021-12-15 11:51:47,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea67b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:47, skipping insertion in model container [2021-12-15 11:51:47,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:47" (3/3) ... [2021-12-15 11:51:47,942 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.10.cil-2.c [2021-12-15 11:51:47,946 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:51:47,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:51:47,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:51:47,987 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:51:47,988 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:51:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-15 11:51:48,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-15 11:51:48,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:51:48,046 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] [2021-12-15 11:51:48,047 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:51:48,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:51:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2021-12-15 11:51:48,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:51:48,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824215472] [2021-12-15 11:51:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:51:48,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:51:48,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:51:48,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:51:48,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:51:48,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 11:51:48,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:51:48,316 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:51:48,319 INFO L158 Benchmark]: Toolchain (without parser) took 10154.53ms. Allocated memory was 60.8MB in the beginning and 677.4MB in the end (delta: 616.6MB). Free memory was 24.7MB in the beginning and 396.7MB in the end (delta: -372.0MB). Peak memory consumption was 242.9MB. Max. memory is 16.1GB. [2021-12-15 11:51:48,319 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.0MB in the beginning and 32.0MB in the end (delta: 37.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:51:48,320 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2333.89ms. Allocated memory was 60.8MB in the beginning and 161.5MB in the end (delta: 100.7MB). Free memory was 24.5MB in the beginning and 60.7MB in the end (delta: -36.1MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. [2021-12-15 11:51:48,320 INFO L158 Benchmark]: Boogie Procedure Inliner took 487.46ms. Allocated memory was 161.5MB in the beginning and 264.2MB in the end (delta: 102.8MB). Free memory was 60.7MB in the beginning and 133.8MB in the end (delta: -73.1MB). Peak memory consumption was 84.3MB. Max. memory is 16.1GB. [2021-12-15 11:51:48,320 INFO L158 Benchmark]: Boogie Preprocessor took 355.66ms. Allocated memory is still 264.2MB. Free memory was 133.8MB in the beginning and 101.0MB in the end (delta: 32.8MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. [2021-12-15 11:51:48,321 INFO L158 Benchmark]: RCFGBuilder took 6590.96ms. Allocated memory was 264.2MB in the beginning and 677.4MB in the end (delta: 413.1MB). Free memory was 101.0MB in the beginning and 423.9MB in the end (delta: -323.0MB). Peak memory consumption was 354.4MB. Max. memory is 16.1GB. [2021-12-15 11:51:48,321 INFO L158 Benchmark]: TraceAbstraction took 380.61ms. Allocated memory is still 677.4MB. Free memory was 422.9MB in the beginning and 396.7MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:51:48,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.0MB in the beginning and 32.0MB in the end (delta: 37.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2333.89ms. Allocated memory was 60.8MB in the beginning and 161.5MB in the end (delta: 100.7MB). Free memory was 24.5MB in the beginning and 60.7MB in the end (delta: -36.1MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 487.46ms. Allocated memory was 161.5MB in the beginning and 264.2MB in the end (delta: 102.8MB). Free memory was 60.7MB in the beginning and 133.8MB in the end (delta: -73.1MB). Peak memory consumption was 84.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 355.66ms. Allocated memory is still 264.2MB. Free memory was 133.8MB in the beginning and 101.0MB in the end (delta: 32.8MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. * RCFGBuilder took 6590.96ms. Allocated memory was 264.2MB in the beginning and 677.4MB in the end (delta: 413.1MB). Free memory was 101.0MB in the beginning and 423.9MB in the end (delta: -323.0MB). Peak memory consumption was 354.4MB. Max. memory is 16.1GB. * TraceAbstraction took 380.61ms. Allocated memory is still 677.4MB. Free memory was 422.9MB in the beginning and 396.7MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:51:48,347 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