./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.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.01.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 eeee6bfce8612e4c7a8797e69f7e2696f4f49417b2ea41e83d66cf7e8ad61db4 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:50:51,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:50:51,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:50:51,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:50:51,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:50:51,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:50:51,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:50:51,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:50:51,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:50:51,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:50:51,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:50:51,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:50:51,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:50:51,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:50:51,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:50:51,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:50:51,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:50:51,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:50:51,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:50:51,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:50:51,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:50:51,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:50:51,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:50:51,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:50:51,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:50:51,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:50:51,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:50:51,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:50:51,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:50:51,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:50:51,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:50:51,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:50:51,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:50:51,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:50:51,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:50:51,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:50:51,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:50:51,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:50:51,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:50:51,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:50:51,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:50:51,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:50:51,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:50:51,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:50:51,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:50:51,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:50:51,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:50:51,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:50:51,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:50:51,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:50:51,283 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:50:51,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:50:51,284 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:50:51,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:50:51,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:50:51,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:50:51,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:50:51,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:50:51,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:50:51,285 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:50:51,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:50:51,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:50:51,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:50:51,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:50:51,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:50:51,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:50:51,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:50:51,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:50:51,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:50:51,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:50:51,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:50:51,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:50:51,287 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:50:51,287 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:50:51,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:50:51,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:50:51,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eeee6bfce8612e4c7a8797e69f7e2696f4f49417b2ea41e83d66cf7e8ad61db4 [2021-12-15 11:50:51,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:50:51,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:50:51,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:50:51,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:50:51,522 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:50:51,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c [2021-12-15 11:50:51,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72950a264/d694f55e0c6245a394bcddd289b8e8d3/FLAG764d1c710 [2021-12-15 11:50:52,240 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:50:52,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c [2021-12-15 11:50:52,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72950a264/d694f55e0c6245a394bcddd289b8e8d3/FLAG764d1c710 [2021-12-15 11:50:52,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72950a264/d694f55e0c6245a394bcddd289b8e8d3 [2021-12-15 11:50:52,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:50:52,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:50:52,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:50:52,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:50:52,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:50:52,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:50:52" (1/1) ... [2021-12-15 11:50:52,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b02b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:52, skipping insertion in model container [2021-12-15 11:50:52,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:50:52" (1/1) ... [2021-12-15 11:50:52,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:50:52,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:50:54,032 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.01.cil-2.c[380593,380606] [2021-12-15 11:50:54,050 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.01.cil-2.c[383339,383352] [2021-12-15 11:50:54,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:50:54,157 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:50:54,736 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.01.cil-2.c[380593,380606] [2021-12-15 11:50:54,739 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.01.cil-2.c[383339,383352] [2021-12-15 11:50:54,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:50:54,794 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:50:54,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54 WrapperNode [2021-12-15 11:50:54,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:50:54,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:54,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:50:54,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:50:54,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (1/1) ... [2021-12-15 11:50:54,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (1/1) ... [2021-12-15 11:50:55,105 INFO L137 Inliner]: procedures = 46, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12566 [2021-12-15 11:50:55,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:55,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:50:55,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:50:55,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:50:55,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (1/1) ... [2021-12-15 11:50:55,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (1/1) ... [2021-12-15 11:50:55,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (1/1) ... [2021-12-15 11:50:55,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (1/1) ... [2021-12-15 11:50:55,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (1/1) ... [2021-12-15 11:50:55,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (1/1) ... [2021-12-15 11:50:55,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (1/1) ... [2021-12-15 11:50:55,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:50:55,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:50:55,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:50:55,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:50:55,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (1/1) ... [2021-12-15 11:50:55,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:50:55,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:50:55,516 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 11:50:55,525 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 11:50:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:50:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:50:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:50:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:50:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:50:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:50:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:50:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:50:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:50:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:50:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:50:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:50:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:50:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:50:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:50:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:50:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:50:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:50:55,599 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:50:55,600 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:51:00,351 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:51:00,369 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:51:00,369 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-15 11:51:00,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:00 BoogieIcfgContainer [2021-12-15 11:51:00,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:51:00,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:51:00,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:51:00,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:51:00,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:50:52" (1/3) ... [2021-12-15 11:51:00,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b793d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:00, skipping insertion in model container [2021-12-15 11:51:00,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:54" (2/3) ... [2021-12-15 11:51:00,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b793d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:00, skipping insertion in model container [2021-12-15 11:51:00,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:00" (3/3) ... [2021-12-15 11:51:00,379 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.01.cil-2.c [2021-12-15 11:51:00,382 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:51:00,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:51:00,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:51:00,427 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 11:51:00,427 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:51:00,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 2298 states, 2271 states have (on average 1.8590929106120653) internal successors, (4222), 2276 states have internal predecessors, (4222), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-15 11:51:00,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-15 11:51:00,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:51:00,470 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] [2021-12-15 11:51:00,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:51:00,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:51:00,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1417964819, now seen corresponding path program 1 times [2021-12-15 11:51:00,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:51:00,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788961602] [2021-12-15 11:51:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:51:00,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:51:00,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:51:00,522 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 11:51:00,526 INFO L158 Benchmark]: Toolchain (without parser) took 7912.77ms. Allocated memory was 140.5MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 98.3MB in the beginning and 748.2MB in the end (delta: -649.9MB). Peak memory consumption was 421.3MB. Max. memory is 16.1GB. [2021-12-15 11:51:00,526 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:51:00,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2182.25ms. Allocated memory was 140.5MB in the beginning and 283.1MB in the end (delta: 142.6MB). Free memory was 97.8MB in the beginning and 174.4MB in the end (delta: -76.6MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:00,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 310.06ms. Allocated memory is still 283.1MB. Free memory was 174.4MB in the beginning and 141.9MB in the end (delta: 32.5MB). Peak memory consumption was 89.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:00,528 INFO L158 Benchmark]: Boogie Preprocessor took 365.94ms. Allocated memory is still 283.1MB. Free memory was 141.9MB in the beginning and 120.2MB in the end (delta: 21.7MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2021-12-15 11:51:00,528 INFO L158 Benchmark]: RCFGBuilder took 4900.03ms. Allocated memory was 283.1MB in the beginning and 1.2GB in the end (delta: 929.0MB). Free memory was 120.2MB in the beginning and 769.2MB in the end (delta: -649.0MB). Peak memory consumption was 283.3MB. Max. memory is 16.1GB. [2021-12-15 11:51:00,528 INFO L158 Benchmark]: TraceAbstraction took 150.54ms. Allocated memory is still 1.2GB. Free memory was 768.1MB in the beginning and 748.2MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 11:51:00,530 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 104.9MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2182.25ms. Allocated memory was 140.5MB in the beginning and 283.1MB in the end (delta: 142.6MB). Free memory was 97.8MB in the beginning and 174.4MB in the end (delta: -76.6MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 310.06ms. Allocated memory is still 283.1MB. Free memory was 174.4MB in the beginning and 141.9MB in the end (delta: 32.5MB). Peak memory consumption was 89.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 365.94ms. Allocated memory is still 283.1MB. Free memory was 141.9MB in the beginning and 120.2MB in the end (delta: 21.7MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * RCFGBuilder took 4900.03ms. Allocated memory was 283.1MB in the beginning and 1.2GB in the end (delta: 929.0MB). Free memory was 120.2MB in the beginning and 769.2MB in the end (delta: -649.0MB). Peak memory consumption was 283.3MB. Max. memory is 16.1GB. * TraceAbstraction took 150.54ms. Allocated memory is still 1.2GB. Free memory was 768.1MB in the beginning and 748.2MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:51:00,570 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_label49+token_ring.01.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 eeee6bfce8612e4c7a8797e69f7e2696f4f49417b2ea41e83d66cf7e8ad61db4 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:51:02,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:51:02,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:51:02,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:51:02,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:51:02,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:51:02,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:51:02,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:51:02,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:51:02,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:51:02,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:51:02,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:51:02,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:51:02,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:51:02,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:51:02,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:51:02,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:51:02,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:51:02,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:51:02,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:51:02,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:51:02,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:51:02,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:51:02,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:51:02,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:51:02,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:51:02,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:51:02,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:51:02,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:51:02,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:51:02,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:51:02,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:51:02,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:51:02,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:51:02,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:51:02,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:51:02,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:51:02,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:51:02,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:51:02,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:51:02,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:51:02,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:51:02,546 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:51:02,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:51:02,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:51:02,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:51:02,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:51:02,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:51:02,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:51:02,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:51:02,549 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:51:02,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:51:02,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:51:02,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:51:02,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:51:02,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:51:02,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:51:02,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:51:02,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:02,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:51:02,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:51:02,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:51:02,551 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:51:02,551 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:51:02,552 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:51:02,552 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:51:02,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:51:02,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:51:02,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:51:02,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eeee6bfce8612e4c7a8797e69f7e2696f4f49417b2ea41e83d66cf7e8ad61db4 [2021-12-15 11:51:02,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:51:02,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:51:02,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:51:02,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:51:02,869 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:51:02,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c [2021-12-15 11:51:02,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86d732deb/c5c216f5202b4cbca2f692c0098bdb6b/FLAGa95181409 [2021-12-15 11:51:03,635 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:51:03,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.01.cil-2.c [2021-12-15 11:51:03,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86d732deb/c5c216f5202b4cbca2f692c0098bdb6b/FLAGa95181409 [2021-12-15 11:51:03,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86d732deb/c5c216f5202b4cbca2f692c0098bdb6b [2021-12-15 11:51:03,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:51:03,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:51:03,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:03,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:51:03,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:51:03,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:03" (1/1) ... [2021-12-15 11:51:03,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180aaf57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:03, skipping insertion in model container [2021-12-15 11:51:03,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:03" (1/1) ... [2021-12-15 11:51:03,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:51:04,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:51:05,242 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.01.cil-2.c[380593,380606] [2021-12-15 11:51:05,261 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.01.cil-2.c[383339,383352] [2021-12-15 11:51:05,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:05,363 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:51:06,141 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.01.cil-2.c[380593,380606] [2021-12-15 11:51:06,154 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.01.cil-2.c[383339,383352] [2021-12-15 11:51:06,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:06,212 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:51:06,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06 WrapperNode [2021-12-15 11:51:06,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:06,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:06,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:51:06,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:51:06,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (1/1) ... [2021-12-15 11:51:06,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (1/1) ... [2021-12-15 11:51:06,843 INFO L137 Inliner]: procedures = 47, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12545 [2021-12-15 11:51:06,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:06,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:51:06,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:51:06,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:51:06,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (1/1) ... [2021-12-15 11:51:06,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (1/1) ... [2021-12-15 11:51:06,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (1/1) ... [2021-12-15 11:51:06,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (1/1) ... [2021-12-15 11:51:07,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (1/1) ... [2021-12-15 11:51:07,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (1/1) ... [2021-12-15 11:51:07,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (1/1) ... [2021-12-15 11:51:07,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:51:07,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:51:07,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:51:07,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:51:07,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (1/1) ... [2021-12-15 11:51:07,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:07,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:51:07,427 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 11:51:07,430 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 11:51:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:51:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:51:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:51:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:51:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:51:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:51:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:51:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:51:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:51:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:51:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:51:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:51:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:51:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:51:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:51:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:51:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:51:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:51:07,537 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:51:07,538 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:51:13,656 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:51:13,710 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:51:13,711 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-15 11:51:13,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:13 BoogieIcfgContainer [2021-12-15 11:51:13,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:51:13,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:51:13,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:51:13,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:51:13,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:51:03" (1/3) ... [2021-12-15 11:51:13,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8527f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:13, skipping insertion in model container [2021-12-15 11:51:13,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:06" (2/3) ... [2021-12-15 11:51:13,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8527f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:13, skipping insertion in model container [2021-12-15 11:51:13,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:13" (3/3) ... [2021-12-15 11:51:13,750 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.01.cil-2.c [2021-12-15 11:51:13,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:51:13,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:51:13,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:51:13,804 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 11:51:13,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:51:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 2298 states, 2271 states have (on average 1.8590929106120653) internal successors, (4222), 2276 states have internal predecessors, (4222), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-15 11:51:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-15 11:51:13,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:51:13,856 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] [2021-12-15 11:51:13,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:51:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:51:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1417964819, now seen corresponding path program 1 times [2021-12-15 11:51:13,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:51:13,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670607114] [2021-12-15 11:51:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:51:13,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:51:13,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:51:13,870 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 11:51:13,871 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 11:51:13,905 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 11:51:14,103 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 11:51:14,104 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 11:51:14,108 INFO L158 Benchmark]: Toolchain (without parser) took 10154.94ms. Allocated memory was 73.4MB in the beginning and 954.2MB in the end (delta: 880.8MB). Free memory was 38.6MB in the beginning and 738.5MB in the end (delta: -699.9MB). Peak memory consumption was 179.0MB. Max. memory is 16.1GB. [2021-12-15 11:51:14,108 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:51:14,108 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2258.66ms. Allocated memory was 73.4MB in the beginning and 172.0MB in the end (delta: 98.6MB). Free memory was 38.4MB in the beginning and 76.9MB in the end (delta: -38.5MB). Peak memory consumption was 89.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:14,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 630.51ms. Allocated memory was 172.0MB in the beginning and 343.9MB in the end (delta: 172.0MB). Free memory was 76.9MB in the beginning and 231.0MB in the end (delta: -154.1MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:14,109 INFO L158 Benchmark]: Boogie Preprocessor took 543.81ms. Allocated memory is still 343.9MB. Free memory was 231.0MB in the beginning and 176.5MB in the end (delta: 54.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2021-12-15 11:51:14,110 INFO L158 Benchmark]: RCFGBuilder took 6333.37ms. Allocated memory was 343.9MB in the beginning and 954.2MB in the end (delta: 610.3MB). Free memory was 176.5MB in the beginning and 763.7MB in the end (delta: -587.2MB). Peak memory consumption was 340.8MB. Max. memory is 16.1GB. [2021-12-15 11:51:14,110 INFO L158 Benchmark]: TraceAbstraction took 377.63ms. Allocated memory is still 954.2MB. Free memory was 763.7MB in the beginning and 738.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:51:14,112 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2258.66ms. Allocated memory was 73.4MB in the beginning and 172.0MB in the end (delta: 98.6MB). Free memory was 38.4MB in the beginning and 76.9MB in the end (delta: -38.5MB). Peak memory consumption was 89.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 630.51ms. Allocated memory was 172.0MB in the beginning and 343.9MB in the end (delta: 172.0MB). Free memory was 76.9MB in the beginning and 231.0MB in the end (delta: -154.1MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 543.81ms. Allocated memory is still 343.9MB. Free memory was 231.0MB in the beginning and 176.5MB in the end (delta: 54.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * RCFGBuilder took 6333.37ms. Allocated memory was 343.9MB in the beginning and 954.2MB in the end (delta: 610.3MB). Free memory was 176.5MB in the beginning and 763.7MB in the end (delta: -587.2MB). Peak memory consumption was 340.8MB. Max. memory is 16.1GB. * TraceAbstraction took 377.63ms. Allocated memory is still 954.2MB. Free memory was 763.7MB in the beginning and 738.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:51:14,150 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