./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.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/weaver/popl20-channel-sum.wvr.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 c902137dd689344b33e1214981c74c26e47854ade5db7e5e71980f90fd07d90c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:28:47,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:28:47,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:28:47,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:28:47,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:28:47,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:28:47,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:28:47,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:28:47,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:28:47,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:28:47,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:28:47,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:28:47,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:28:47,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:28:47,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:28:48,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:28:48,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:28:48,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:28:48,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:28:48,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:28:48,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:28:48,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:28:48,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:28:48,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:28:48,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:28:48,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:28:48,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:28:48,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:28:48,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:28:48,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:28:48,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:28:48,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:28:48,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:28:48,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:28:48,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:28:48,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:28:48,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:28:48,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:28:48,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:28:48,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:28:48,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:28:48,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:28:48,052 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:28:48,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:28:48,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:28:48,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:28:48,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:28:48,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:28:48,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:28:48,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:28:48,056 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:28:48,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:28:48,057 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:28:48,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:28:48,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:28:48,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:28:48,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:28:48,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:28:48,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:28:48,058 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:28:48,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:28:48,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:28:48,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:28:48,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:28:48,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:28:48,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:28:48,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:28:48,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:28:48,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:28:48,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:28:48,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:28:48,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:28:48,067 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:28:48,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:28:48,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:28:48,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:28:48,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c902137dd689344b33e1214981c74c26e47854ade5db7e5e71980f90fd07d90c [2021-12-15 12:28:48,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:28:48,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:28:48,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:28:48,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:28:48,313 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:28:48,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-12-15 12:28:48,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd9cca87/0567ea820ba74e839325744c6481f823/FLAGdbfa93775 [2021-12-15 12:28:48,719 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:28:48,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-12-15 12:28:48,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd9cca87/0567ea820ba74e839325744c6481f823/FLAGdbfa93775 [2021-12-15 12:28:49,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd9cca87/0567ea820ba74e839325744c6481f823 [2021-12-15 12:28:49,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:28:49,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:28:49,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:28:49,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:28:49,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:28:49,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489c718f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49, skipping insertion in model container [2021-12-15 12:28:49,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:28:49,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:28:49,277 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/weaver/popl20-channel-sum.wvr.c[2947,2960] [2021-12-15 12:28:49,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:28:49,295 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:28:49,325 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/weaver/popl20-channel-sum.wvr.c[2947,2960] [2021-12-15 12:28:49,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:28:49,340 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:28:49,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49 WrapperNode [2021-12-15 12:28:49,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:28:49,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:28:49,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:28:49,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:28:49,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,381 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 151 [2021-12-15 12:28:49,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:28:49,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:28:49,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:28:49,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:28:49,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:28:49,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:28:49,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:28:49,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:28:49,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:49" (1/1) ... [2021-12-15 12:28:49,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:28:49,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:28:49,452 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 12:28:49,475 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 12:28:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:28:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-15 12:28:49,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-15 12:28:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-15 12:28:49,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-15 12:28:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:28:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:28:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 12:28:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-15 12:28:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-15 12:28:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 12:28:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:28:49,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:28:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 12:28:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:28:49,481 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 12:28:49,587 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:28:49,588 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:28:49,729 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:28:49,761 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 12:28:49,778 INFO L158 Benchmark]: Toolchain (without parser) took 649.44ms. Allocated memory is still 130.0MB. Free memory was 100.0MB in the beginning and 84.5MB in the end (delta: 15.5MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2021-12-15 12:28:49,779 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 81.8MB. Free memory was 39.7MB in the beginning and 39.7MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:28:49,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.77ms. Allocated memory is still 130.0MB. Free memory was 100.0MB in the beginning and 104.3MB in the end (delta: -4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 12:28:49,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.40ms. Allocated memory is still 130.0MB. Free memory was 104.3MB in the beginning and 102.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:28:49,780 INFO L158 Benchmark]: Boogie Preprocessor took 36.78ms. Allocated memory is still 130.0MB. Free memory was 102.0MB in the beginning and 100.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:28:49,780 INFO L158 Benchmark]: RCFGBuilder took 357.39ms. Allocated memory is still 130.0MB. Free memory was 100.7MB in the beginning and 84.5MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-15 12:28:49,783 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 81.8MB. Free memory was 39.7MB in the beginning and 39.7MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.77ms. Allocated memory is still 130.0MB. Free memory was 100.0MB in the beginning and 104.3MB in the end (delta: -4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.40ms. Allocated memory is still 130.0MB. Free memory was 104.3MB in the beginning and 102.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.78ms. Allocated memory is still 130.0MB. Free memory was 102.0MB in the beginning and 100.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 357.39ms. Allocated memory is still 130.0MB. Free memory was 100.7MB in the beginning and 84.5MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. 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 12:28:49,823 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/weaver/popl20-channel-sum.wvr.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 c902137dd689344b33e1214981c74c26e47854ade5db7e5e71980f90fd07d90c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:28:51,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:28:51,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:28:51,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:28:51,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:28:51,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:28:51,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:28:51,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:28:51,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:28:51,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:28:51,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:28:51,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:28:51,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:28:51,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:28:51,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:28:51,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:28:51,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:28:51,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:28:51,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:28:51,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:28:51,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:28:51,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:28:51,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:28:51,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:28:51,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:28:51,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:28:51,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:28:51,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:28:51,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:28:51,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:28:51,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:28:51,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:28:51,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:28:51,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:28:51,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:28:51,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:28:51,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:28:51,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:28:51,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:28:51,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:28:51,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:28:51,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:28:51,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:28:51,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:28:51,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:28:51,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:28:51,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:28:51,623 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:28:51,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:28:51,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:28:51,624 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:28:51,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:28:51,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:28:51,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:28:51,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:28:51,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:28:51,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:28:51,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:28:51,626 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:28:51,626 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:28:51,626 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:28:51,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:28:51,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:28:51,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:28:51,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:28:51,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:28:51,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:28:51,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:28:51,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:28:51,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:28:51,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:28:51,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:28:51,637 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:28:51,637 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:28:51,637 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:28:51,637 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:28:51,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:28:51,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:28:51,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:28:51,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c902137dd689344b33e1214981c74c26e47854ade5db7e5e71980f90fd07d90c [2021-12-15 12:28:51,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:28:51,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:28:51,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:28:51,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:28:51,938 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:28:51,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-12-15 12:28:51,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c7e019f/d2ffb3f6345046709cfc687f947a3050/FLAGc3632935d [2021-12-15 12:28:52,377 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:28:52,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-12-15 12:28:52,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c7e019f/d2ffb3f6345046709cfc687f947a3050/FLAGc3632935d [2021-12-15 12:28:52,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c7e019f/d2ffb3f6345046709cfc687f947a3050 [2021-12-15 12:28:52,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:28:52,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:28:52,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:28:52,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:28:52,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:28:52,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:28:52" (1/1) ... [2021-12-15 12:28:52,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69793503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:52, skipping insertion in model container [2021-12-15 12:28:52,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:28:52" (1/1) ... [2021-12-15 12:28:52,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:28:52,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:28:53,015 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/weaver/popl20-channel-sum.wvr.c[2947,2960] [2021-12-15 12:28:53,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:28:53,038 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 12:28:53,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:28:53,065 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/weaver/popl20-channel-sum.wvr.c[2947,2960] [2021-12-15 12:28:53,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:28:53,074 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:28:53,101 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/weaver/popl20-channel-sum.wvr.c[2947,2960] [2021-12-15 12:28:53,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:28:53,122 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:28:53,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53 WrapperNode [2021-12-15 12:28:53,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:28:53,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:28:53,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:28:53,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:28:53,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53" (1/1) ... [2021-12-15 12:28:53,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53" (1/1) ... [2021-12-15 12:28:53,166 INFO L137 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 148 [2021-12-15 12:28:53,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:28:53,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:28:53,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:28:53,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:28:53,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53" (1/1) ... [2021-12-15 12:28:53,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53" (1/1) ... [2021-12-15 12:28:53,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53" (1/1) ... [2021-12-15 12:28:53,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53" (1/1) ... [2021-12-15 12:28:53,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53" (1/1) ... [2021-12-15 12:28:53,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53" (1/1) ... [2021-12-15 12:28:53,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53" (1/1) ... [2021-12-15 12:28:53,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:28:53,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:28:53,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:28:53,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:28:53,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:28:53" (1/1) ... [2021-12-15 12:28:53,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:28:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:28:53,228 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 12:28:53,244 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 12:28:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:28:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:28:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:28:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 12:28:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-15 12:28:53,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-15 12:28:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-15 12:28:53,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-15 12:28:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-15 12:28:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-15 12:28:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 12:28:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:28:53,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:28:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:28:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 12:28:53,261 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 12:28:53,353 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:28:53,354 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:28:53,610 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:28:53,696 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 12:28:53,698 INFO L158 Benchmark]: Toolchain (without parser) took 910.34ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 30.5MB in the beginning and 56.9MB in the end (delta: -26.4MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-12-15 12:28:53,698 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:28:53,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.40ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 30.3MB in the beginning and 56.8MB in the end (delta: -26.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-12-15 12:28:53,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.53ms. Allocated memory is still 77.6MB. Free memory was 56.8MB in the beginning and 54.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:28:53,700 INFO L158 Benchmark]: Boogie Preprocessor took 39.52ms. Allocated memory is still 77.6MB. Free memory was 54.7MB in the beginning and 53.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:28:53,700 INFO L158 Benchmark]: RCFGBuilder took 489.78ms. Allocated memory is still 77.6MB. Free memory was 53.0MB in the beginning and 56.9MB in the end (delta: -3.8MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-12-15 12:28:53,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.40ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 30.3MB in the beginning and 56.8MB in the end (delta: -26.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.53ms. Allocated memory is still 77.6MB. Free memory was 56.8MB in the beginning and 54.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.52ms. Allocated memory is still 77.6MB. Free memory was 54.7MB in the beginning and 53.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 489.78ms. Allocated memory is still 77.6MB. Free memory was 53.0MB in the beginning and 56.9MB in the end (delta: -3.8MB). Peak memory consumption was 19.0MB. 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 12:28:53,745 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