./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --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/pthread-complex/elimination_backoff_stack.i -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 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:25:52,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:25:52,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:25:52,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:25:52,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:25:52,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:25:52,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:25:52,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:25:52,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:25:52,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:25:52,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:25:52,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:25:52,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:25:52,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:25:52,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:25:52,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:25:52,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:25:52,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:25:52,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:25:52,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:25:52,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:25:52,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:25:52,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:25:52,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:25:52,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:25:52,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:25:52,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:25:52,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:25:52,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:25:52,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:25:52,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:25:52,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:25:52,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:25:52,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:25:52,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:25:52,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:25:52,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:25:52,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:25:52,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:25:52,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:25:52,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:25:52,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:25:52,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:25:52,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:25:52,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:25:52,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:25:52,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:25:52,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:25:52,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:25:52,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:25:52,186 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:25:52,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:25:52,187 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:25:52,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:25:52,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:25:52,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:25:52,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:25:52,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:25:52,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:25:52,188 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:25:52,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:25:52,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:25:52,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:25:52,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:25:52,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:25:52,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:25:52,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:25:52,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:25:52,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:25:52,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:25:52,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:25:52,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:25:52,190 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:25:52,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:25:52,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:25:52,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:25:52,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2021-12-15 12:25:52,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:25:52,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:25:52,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:25:52,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:25:52,398 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:25:52,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2021-12-15 12:25:52,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1b41edd/a3f2995f4b094bd098d35d9b7993a29e/FLAGc96cd15aa [2021-12-15 12:25:52,834 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:25:52,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2021-12-15 12:25:52,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1b41edd/a3f2995f4b094bd098d35d9b7993a29e/FLAGc96cd15aa [2021-12-15 12:25:53,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1b41edd/a3f2995f4b094bd098d35d9b7993a29e [2021-12-15 12:25:53,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:25:53,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:25:53,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:25:53,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:25:53,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:25:53,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:53,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13493cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53, skipping insertion in model container [2021-12-15 12:25:53,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:53,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:25:53,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:25:53,734 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/pthread-complex/elimination_backoff_stack.i[63494,63507] [2021-12-15 12:25:53,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:25:53,753 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:25:53,806 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/pthread-complex/elimination_backoff_stack.i[63494,63507] [2021-12-15 12:25:53,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:25:53,894 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:25:53,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53 WrapperNode [2021-12-15 12:25:53,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:25:53,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:25:53,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:25:53,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:25:53,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:53,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:54,004 INFO L137 Inliner]: procedures = 397, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3713 [2021-12-15 12:25:54,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:25:54,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:25:54,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:25:54,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:25:54,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:54,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:54,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:54,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:54,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:54,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:54,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:54,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:25:54,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:25:54,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:25:54,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:25:54,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:25:53" (1/1) ... [2021-12-15 12:25:54,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:25:54,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:25:54,180 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 12:25:54,187 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 12:25:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-15 12:25:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:25:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-15 12:25:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 12:25:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:25:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 12:25:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2021-12-15 12:25:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2021-12-15 12:25:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2021-12-15 12:25:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2021-12-15 12:25:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2021-12-15 12:25:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2021-12-15 12:25:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:25:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:25:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:25:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 12:25:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 12:25:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 12:25:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2021-12-15 12:25:54,208 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2021-12-15 12:25:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2021-12-15 12:25:54,209 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2021-12-15 12:25:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2021-12-15 12:25:54,209 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2021-12-15 12:25:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2021-12-15 12:25:54,210 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2021-12-15 12:25:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:25:54,212 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-15 12:25:54,497 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:25:54,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:25:56,476 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:25:56,888 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 12:25:56,895 INFO L158 Benchmark]: Toolchain (without parser) took 3711.98ms. Allocated memory was 102.8MB in the beginning and 184.5MB in the end (delta: 81.8MB). Free memory was 70.8MB in the beginning and 58.8MB in the end (delta: 12.0MB). Peak memory consumption was 105.0MB. Max. memory is 16.1GB. [2021-12-15 12:25:56,896 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:25:56,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 712.60ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 70.8MB in the beginning and 93.2MB in the end (delta: -22.4MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2021-12-15 12:25:56,897 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.62ms. Allocated memory is still 127.9MB. Free memory was 93.2MB in the beginning and 75.0MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-15 12:25:56,898 INFO L158 Benchmark]: Boogie Preprocessor took 142.00ms. Allocated memory is still 127.9MB. Free memory was 75.0MB in the beginning and 86.6MB in the end (delta: -11.7MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2021-12-15 12:25:56,899 INFO L158 Benchmark]: RCFGBuilder took 2745.29ms. Allocated memory was 127.9MB in the beginning and 184.5MB in the end (delta: 56.6MB). Free memory was 86.6MB in the beginning and 58.8MB in the end (delta: 27.8MB). Peak memory consumption was 94.6MB. Max. memory is 16.1GB. [2021-12-15 12:25:56,904 INFO L339 ainManager$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 102.8MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 712.60ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 70.8MB in the beginning and 93.2MB in the end (delta: -22.4MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.62ms. Allocated memory is still 127.9MB. Free memory was 93.2MB in the beginning and 75.0MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 142.00ms. Allocated memory is still 127.9MB. Free memory was 75.0MB in the beginning and 86.6MB in the end (delta: -11.7MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * RCFGBuilder took 2745.29ms. Allocated memory was 127.9MB in the beginning and 184.5MB in the end (delta: 56.6MB). Free memory was 86.6MB in the beginning and 58.8MB in the end (delta: 27.8MB). Peak memory consumption was 94.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:25:56,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -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 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:25:58,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:25:58,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:25:58,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:25:58,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:25:58,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:25:58,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:25:58,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:25:58,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:25:58,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:25:58,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:25:58,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:25:58,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:25:58,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:25:58,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:25:58,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:25:58,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:25:58,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:25:58,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:25:58,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:25:58,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:25:58,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:25:58,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:25:58,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:25:58,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:25:58,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:25:58,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:25:58,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:25:58,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:25:58,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:25:58,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:25:58,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:25:58,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:25:58,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:25:58,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:25:58,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:25:58,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:25:58,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:25:58,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:25:58,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:25:58,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:25:58,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:25:58,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:25:58,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:25:58,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:25:58,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:25:58,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:25:58,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:25:58,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:25:58,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:25:58,695 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:25:58,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:25:58,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:25:58,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:25:58,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:25:58,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:25:58,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:25:58,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:25:58,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:25:58,697 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:25:58,697 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:25:58,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:25:58,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:25:58,698 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:25:58,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:25:58,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:25:58,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:25:58,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:25:58,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:25:58,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:25:58,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:25:58,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:25:58,703 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:25:58,703 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:25:58,704 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:25:58,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:25:58,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:25:58,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:25:58,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:25:58,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2021-12-15 12:25:58,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:25:59,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:25:59,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:25:59,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:25:59,014 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:25:59,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2021-12-15 12:25:59,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cebba1de3/d1fbbb833a3b4c848970e579df00a09b/FLAG0518824c4 [2021-12-15 12:25:59,515 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:25:59,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2021-12-15 12:25:59,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cebba1de3/d1fbbb833a3b4c848970e579df00a09b/FLAG0518824c4 [2021-12-15 12:26:00,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cebba1de3/d1fbbb833a3b4c848970e579df00a09b [2021-12-15 12:26:00,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:26:00,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:26:00,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:26:00,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:26:00,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:26:00,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7903a627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00, skipping insertion in model container [2021-12-15 12:26:00,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:26:00,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:26:00,474 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/pthread-complex/elimination_backoff_stack.i[63494,63507] [2021-12-15 12:26:00,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:26:00,501 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:26:00,561 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/pthread-complex/elimination_backoff_stack.i[63494,63507] [2021-12-15 12:26:00,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:26:00,647 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:26:00,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00 WrapperNode [2021-12-15 12:26:00,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:26:00,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:26:00,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:26:00,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:26:00,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,774 INFO L137 Inliner]: procedures = 401, calls = 214, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3601 [2021-12-15 12:26:00,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:26:00,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:26:00,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:26:00,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:26:00,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:26:00,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:26:00,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:26:00,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:26:00,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:26:00" (1/1) ... [2021-12-15 12:26:00,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:26:00,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:26:00,981 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 12:26:01,023 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 12:26:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-15 12:26:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:26:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:26:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-15 12:26:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-15 12:26:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:26:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 12:26:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2021-12-15 12:26:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2021-12-15 12:26:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2021-12-15 12:26:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2021-12-15 12:26:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2021-12-15 12:26:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2021-12-15 12:26:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:26:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:26:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 12:26:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:26:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 12:26:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 12:26:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 12:26:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2021-12-15 12:26:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2021-12-15 12:26:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2021-12-15 12:26:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2021-12-15 12:26:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2021-12-15 12:26:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2021-12-15 12:26:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2021-12-15 12:26:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2021-12-15 12:26:01,032 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-15 12:26:01,389 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:26:01,390 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:26:04,682 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:26:05,133 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 12:26:05,136 INFO L158 Benchmark]: Toolchain (without parser) took 5090.63ms. Allocated memory was 50.3MB in the beginning and 151.0MB in the end (delta: 100.7MB). Free memory was 24.3MB in the beginning and 50.6MB in the end (delta: -26.4MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. [2021-12-15 12:26:05,136 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory is still 32.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:26:05,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.46ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 24.1MB in the beginning and 29.3MB in the end (delta: -5.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-12-15 12:26:05,137 INFO L158 Benchmark]: Boogie Procedure Inliner took 126.46ms. Allocated memory is still 60.8MB. Free memory was 29.3MB in the beginning and 25.2MB in the end (delta: 4.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-12-15 12:26:05,138 INFO L158 Benchmark]: Boogie Preprocessor took 173.96ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 25.2MB in the beginning and 29.5MB in the end (delta: -4.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-15 12:26:05,138 INFO L158 Benchmark]: RCFGBuilder took 4182.65ms. Allocated memory was 73.4MB in the beginning and 151.0MB in the end (delta: 77.6MB). Free memory was 29.5MB in the beginning and 50.6MB in the end (delta: -21.2MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. [2021-12-15 12:26:05,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory is still 32.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 602.46ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 24.1MB in the beginning and 29.3MB in the end (delta: -5.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 126.46ms. Allocated memory is still 60.8MB. Free memory was 29.3MB in the beginning and 25.2MB in the end (delta: 4.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 173.96ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 25.2MB in the beginning and 29.5MB in the end (delta: -4.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * RCFGBuilder took 4182.65ms. Allocated memory was 73.4MB in the beginning and 151.0MB in the end (delta: 77.6MB). Free memory was 29.5MB in the beginning and 50.6MB in the end (delta: -21.2MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:26:05,170 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