./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.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_label45+token_ring.12.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 2c24bc45cf56e090de9596945e0f5e2694e330a653ff2d4e505361654a060374 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:48:54,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:48:54,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:48:54,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:48:54,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:48:54,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:48:54,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:48:54,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:48:54,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:48:54,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:48:54,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:48:54,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:48:54,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:48:54,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:48:54,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:48:54,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:48:54,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:48:54,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:48:54,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:48:54,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:48:54,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:48:54,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:48:54,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:48:54,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:48:54,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:48:54,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:48:54,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:48:54,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:48:54,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:48:54,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:48:54,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:48:54,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:48:54,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:48:54,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:48:54,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:48:54,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:48:54,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:48:54,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:48:54,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:48:54,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:48:54,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:48:54,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:48:54,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:48:54,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:48:54,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:48:54,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:48:54,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:48:54,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:48:54,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:48:54,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:48:54,205 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:48:54,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:48:54,205 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:48:54,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:48:54,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:48:54,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:48:54,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:48:54,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:48:54,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:48:54,207 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:48:54,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:48:54,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:48:54,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:48:54,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:48:54,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:48:54,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:48:54,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:54,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:48:54,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:48:54,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:48:54,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:48:54,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:48:54,210 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:48:54,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:48:54,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:48:54,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:48:54,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c24bc45cf56e090de9596945e0f5e2694e330a653ff2d4e505361654a060374 [2021-12-15 11:48:54,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:48:54,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:48:54,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:48:54,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:48:54,443 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:48:54,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c [2021-12-15 11:48:54,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/131a55b5e/97a612fd96444bc681cbc346212c7305/FLAG91a671eb0 [2021-12-15 11:48:55,152 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:48:55,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c [2021-12-15 11:48:55,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/131a55b5e/97a612fd96444bc681cbc346212c7305/FLAG91a671eb0 [2021-12-15 11:48:55,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/131a55b5e/97a612fd96444bc681cbc346212c7305 [2021-12-15 11:48:55,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:48:55,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:48:55,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:55,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:48:55,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:48:55,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:55" (1/1) ... [2021-12-15 11:48:55,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb93949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:55, skipping insertion in model container [2021-12-15 11:48:55,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:55" (1/1) ... [2021-12-15 11:48:55,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:48:55,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:48:56,879 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_label45+token_ring.12.cil-2.c[380323,380336] [2021-12-15 11:48:56,900 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_label45+token_ring.12.cil-2.c[383339,383352] [2021-12-15 11:48:57,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:57,102 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:48:57,694 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_label45+token_ring.12.cil-2.c[380323,380336] [2021-12-15 11:48:57,700 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_label45+token_ring.12.cil-2.c[383339,383352] [2021-12-15 11:48:57,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:57,761 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:48:57,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57 WrapperNode [2021-12-15 11:48:57,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:57,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:57,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:48:57,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:48:57,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (1/1) ... [2021-12-15 11:48:57,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (1/1) ... [2021-12-15 11:48:58,214 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2021-12-15 11:48:58,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:58,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:48:58,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:48:58,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:48:58,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (1/1) ... [2021-12-15 11:48:58,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (1/1) ... [2021-12-15 11:48:58,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (1/1) ... [2021-12-15 11:48:58,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (1/1) ... [2021-12-15 11:48:58,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (1/1) ... [2021-12-15 11:48:58,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (1/1) ... [2021-12-15 11:48:58,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (1/1) ... [2021-12-15 11:48:58,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:48:58,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:48:58,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:48:58,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:48:58,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (1/1) ... [2021-12-15 11:48:58,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:58,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:48:58,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:48:58,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:48:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:48:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:48:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:48:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:48:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:48:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:48:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:48:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:48:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:48:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:48:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:48:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:48:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:48:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:48:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:48:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:48:58,841 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:48:58,849 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:49:03,337 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:49:03,354 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:49:03,355 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-15 11:49:03,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:49:03 BoogieIcfgContainer [2021-12-15 11:49:03,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:49:03,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:49:03,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:49:03,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:49:03,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:48:55" (1/3) ... [2021-12-15 11:49:03,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc7053f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:49:03, skipping insertion in model container [2021-12-15 11:49:03,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:57" (2/3) ... [2021-12-15 11:49:03,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc7053f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:49:03, skipping insertion in model container [2021-12-15 11:49:03,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:49:03" (3/3) ... [2021-12-15 11:49:03,364 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.12.cil-2.c [2021-12-15 11:49:03,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:49:03,368 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:49:03,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:49:03,409 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 11:49:03,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:49:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-15 11:49:03,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-15 11:49:03,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:49:03,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:49:03,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:49:03,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:49:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2021-12-15 11:49:03,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:49:03,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889959212] [2021-12-15 11:49:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:49:03,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:49:03,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:49:03,524 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 11:49:03,527 INFO L158 Benchmark]: Toolchain (without parser) took 7999.75ms. Allocated memory was 96.5MB in the beginning and 922.7MB in the end (delta: 826.3MB). Free memory was 43.0MB in the beginning and 452.7MB in the end (delta: -409.7MB). Peak memory consumption was 417.0MB. Max. memory is 16.1GB. [2021-12-15 11:49:03,528 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:49:03,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2234.06ms. Allocated memory was 96.5MB in the beginning and 184.5MB in the end (delta: 88.1MB). Free memory was 43.0MB in the beginning and 58.0MB in the end (delta: -15.0MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. [2021-12-15 11:49:03,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 451.43ms. Allocated memory was 184.5MB in the beginning and 276.8MB in the end (delta: 92.3MB). Free memory was 58.0MB in the beginning and 142.1MB in the end (delta: -84.1MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2021-12-15 11:49:03,529 INFO L158 Benchmark]: Boogie Preprocessor took 412.23ms. Allocated memory is still 276.8MB. Free memory was 141.0MB in the beginning and 137.7MB in the end (delta: 3.4MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2021-12-15 11:49:03,530 INFO L158 Benchmark]: RCFGBuilder took 4730.67ms. Allocated memory was 276.8MB in the beginning and 922.7MB in the end (delta: 645.9MB). Free memory was 137.7MB in the beginning and 475.8MB in the end (delta: -338.2MB). Peak memory consumption was 308.8MB. Max. memory is 16.1GB. [2021-12-15 11:49:03,530 INFO L158 Benchmark]: TraceAbstraction took 166.78ms. Allocated memory is still 922.7MB. Free memory was 474.8MB in the beginning and 452.7MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 11:49:03,532 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 96.5MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2234.06ms. Allocated memory was 96.5MB in the beginning and 184.5MB in the end (delta: 88.1MB). Free memory was 43.0MB in the beginning and 58.0MB in the end (delta: -15.0MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 451.43ms. Allocated memory was 184.5MB in the beginning and 276.8MB in the end (delta: 92.3MB). Free memory was 58.0MB in the beginning and 142.1MB in the end (delta: -84.1MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 412.23ms. Allocated memory is still 276.8MB. Free memory was 141.0MB in the beginning and 137.7MB in the end (delta: 3.4MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. * RCFGBuilder took 4730.67ms. Allocated memory was 276.8MB in the beginning and 922.7MB in the end (delta: 645.9MB). Free memory was 137.7MB in the beginning and 475.8MB in the end (delta: -338.2MB). Peak memory consumption was 308.8MB. Max. memory is 16.1GB. * TraceAbstraction took 166.78ms. Allocated memory is still 922.7MB. Free memory was 474.8MB in the beginning and 452.7MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:49:03,559 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_label45+token_ring.12.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 2c24bc45cf56e090de9596945e0f5e2694e330a653ff2d4e505361654a060374 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:49:05,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:49:05,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:49:05,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:49:05,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:49:05,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:49:05,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:49:05,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:49:05,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:49:05,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:49:05,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:49:05,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:49:05,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:49:05,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:49:05,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:49:05,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:49:05,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:49:05,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:49:05,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:49:05,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:49:05,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:49:05,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:49:05,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:49:05,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:49:05,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:49:05,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:49:05,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:49:05,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:49:05,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:49:05,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:49:05,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:49:05,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:49:05,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:49:05,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:49:05,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:49:05,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:49:05,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:49:05,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:49:05,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:49:05,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:49:05,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:49:05,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:49:05,318 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:49:05,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:49:05,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:49:05,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:49:05,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:49:05,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:49:05,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:49:05,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:49:05,320 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:49:05,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:49:05,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:49:05,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:49:05,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:49:05,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:49:05,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:49:05,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:49:05,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:49:05,322 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:49:05,322 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:49:05,322 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:49:05,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:49:05,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:49:05,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:49:05,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:49:05,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:49:05,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:49:05,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:49:05,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:49:05,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:49:05,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:49:05,329 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:49:05,329 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:49:05,329 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:49:05,329 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:49:05,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:49:05,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:49:05,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:49:05,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c24bc45cf56e090de9596945e0f5e2694e330a653ff2d4e505361654a060374 [2021-12-15 11:49:05,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:49:05,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:49:05,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:49:05,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:49:05,617 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:49:05,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c [2021-12-15 11:49:05,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9e9a123/fee343b70b1e47709b54da53f64d309d/FLAG6dc906e3e [2021-12-15 11:49:06,386 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:49:06,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c [2021-12-15 11:49:06,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9e9a123/fee343b70b1e47709b54da53f64d309d/FLAG6dc906e3e [2021-12-15 11:49:06,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9e9a123/fee343b70b1e47709b54da53f64d309d [2021-12-15 11:49:06,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:49:06,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:49:06,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:49:06,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:49:06,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:49:06,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:49:06" (1/1) ... [2021-12-15 11:49:06,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc13114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:06, skipping insertion in model container [2021-12-15 11:49:06,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:49:06" (1/1) ... [2021-12-15 11:49:06,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:49:06,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:49:08,146 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_label45+token_ring.12.cil-2.c[380323,380336] [2021-12-15 11:49:08,183 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_label45+token_ring.12.cil-2.c[383339,383352] [2021-12-15 11:49:08,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:49:08,419 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:49:09,100 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_label45+token_ring.12.cil-2.c[380323,380336] [2021-12-15 11:49:09,111 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_label45+token_ring.12.cil-2.c[383339,383352] [2021-12-15 11:49:09,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:49:09,193 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:49:09,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09 WrapperNode [2021-12-15 11:49:09,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:49:09,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:49:09,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:49:09,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:49:09,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (1/1) ... [2021-12-15 11:49:09,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (1/1) ... [2021-12-15 11:49:09,539 INFO L137 Inliner]: procedures = 69, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13157 [2021-12-15 11:49:09,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:49:09,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:49:09,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:49:09,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:49:09,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (1/1) ... [2021-12-15 11:49:09,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (1/1) ... [2021-12-15 11:49:09,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (1/1) ... [2021-12-15 11:49:09,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (1/1) ... [2021-12-15 11:49:09,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (1/1) ... [2021-12-15 11:49:09,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (1/1) ... [2021-12-15 11:49:09,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (1/1) ... [2021-12-15 11:49:09,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:49:09,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:49:09,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:49:09,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:49:09,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (1/1) ... [2021-12-15 11:49:09,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:49:09,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:49:09,984 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 11:49:10,035 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 11:49:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:49:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:49:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:49:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:49:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:49:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:49:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:49:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:49:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:49:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:49:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:49:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:49:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:49:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:49:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:49:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:49:10,258 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:49:10,259 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:49:16,602 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:49:16,628 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:49:16,629 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-15 11:49:16,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:49:16 BoogieIcfgContainer [2021-12-15 11:49:16,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:49:16,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:49:16,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:49:16,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:49:16,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:49:06" (1/3) ... [2021-12-15 11:49:16,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e639939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:49:16, skipping insertion in model container [2021-12-15 11:49:16,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:09" (2/3) ... [2021-12-15 11:49:16,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e639939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:49:16, skipping insertion in model container [2021-12-15 11:49:16,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:49:16" (3/3) ... [2021-12-15 11:49:16,637 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.12.cil-2.c [2021-12-15 11:49:16,640 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:49:16,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:49:16,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:49:16,679 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 11:49:16,680 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:49:16,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-15 11:49:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-15 11:49:16,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:49:16,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:49:16,734 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:49:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:49:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2021-12-15 11:49:16,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:49:16,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961389323] [2021-12-15 11:49:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:49:16,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:49:16,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:49:16,748 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 11:49:16,749 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 11:49:16,798 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 11:49:16,997 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 11:49:16,997 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 11:49:17,002 INFO L158 Benchmark]: Toolchain (without parser) took 10303.52ms. Allocated memory was 71.3MB in the beginning and 817.9MB in the end (delta: 746.6MB). Free memory was 36.7MB in the beginning and 474.3MB in the end (delta: -437.6MB). Peak memory consumption was 308.8MB. Max. memory is 16.1GB. [2021-12-15 11:49:17,002 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 39.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:49:17,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2494.13ms. Allocated memory was 71.3MB in the beginning and 243.3MB in the end (delta: 172.0MB). Free memory was 36.5MB in the beginning and 129.3MB in the end (delta: -92.8MB). Peak memory consumption was 91.8MB. Max. memory is 16.1GB. [2021-12-15 11:49:17,003 INFO L158 Benchmark]: Boogie Procedure Inliner took 345.43ms. Allocated memory is still 243.3MB. Free memory was 129.3MB in the beginning and 92.3MB in the end (delta: 37.0MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. [2021-12-15 11:49:17,004 INFO L158 Benchmark]: Boogie Preprocessor took 382.41ms. Allocated memory is still 243.3MB. Free memory was 92.3MB in the beginning and 83.5MB in the end (delta: 8.8MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. [2021-12-15 11:49:17,004 INFO L158 Benchmark]: RCFGBuilder took 6708.46ms. Allocated memory was 243.3MB in the beginning and 817.9MB in the end (delta: 574.6MB). Free memory was 83.5MB in the beginning and 500.5MB in the end (delta: -417.0MB). Peak memory consumption was 331.4MB. Max. memory is 16.1GB. [2021-12-15 11:49:17,005 INFO L158 Benchmark]: TraceAbstraction took 367.10ms. Allocated memory is still 817.9MB. Free memory was 500.5MB in the beginning and 474.3MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:49:17,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 39.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2494.13ms. Allocated memory was 71.3MB in the beginning and 243.3MB in the end (delta: 172.0MB). Free memory was 36.5MB in the beginning and 129.3MB in the end (delta: -92.8MB). Peak memory consumption was 91.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 345.43ms. Allocated memory is still 243.3MB. Free memory was 129.3MB in the beginning and 92.3MB in the end (delta: 37.0MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 382.41ms. Allocated memory is still 243.3MB. Free memory was 92.3MB in the beginning and 83.5MB in the end (delta: 8.8MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. * RCFGBuilder took 6708.46ms. Allocated memory was 243.3MB in the beginning and 817.9MB in the end (delta: 574.6MB). Free memory was 83.5MB in the beginning and 500.5MB in the end (delta: -417.0MB). Peak memory consumption was 331.4MB. Max. memory is 16.1GB. * TraceAbstraction took 367.10ms. Allocated memory is still 817.9MB. Free memory was 500.5MB in the beginning and 474.3MB 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 11:49:17,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable