./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_queue-1.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/seq-pthread/cs_queue-1.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 38d92478d67c3996e3815aaa6d0075347cfc456da7f20d1b1bb733d11593b6cf --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:42:55,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:42:55,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:42:55,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:42:55,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:42:56,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:42:56,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:42:56,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:42:56,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:42:56,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:42:56,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:42:56,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:42:56,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:42:56,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:42:56,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:42:56,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:42:56,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:42:56,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:42:56,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:42:56,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:42:56,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:42:56,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:42:56,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:42:56,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:42:56,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:42:56,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:42:56,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:42:56,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:42:56,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:42:56,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:42:56,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:42:56,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:42:56,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:42:56,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:42:56,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:42:56,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:42:56,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:42:56,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:42:56,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:42:56,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:42:56,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:42:56,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:42:56,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:42:56,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:42:56,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:42:56,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:42:56,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:42:56,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:42:56,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:42:56,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:42:56,063 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:42:56,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:42:56,063 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:42:56,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:42:56,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:42:56,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:42:56,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:42:56,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:42:56,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:42:56,064 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:42:56,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:42:56,065 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:42:56,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:42:56,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:42:56,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:42:56,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:42:56,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:42:56,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:42:56,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:42:56,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:42:56,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:42:56,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:42:56,067 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:42:56,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:42:56,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:42:56,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:42:56,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38d92478d67c3996e3815aaa6d0075347cfc456da7f20d1b1bb733d11593b6cf [2021-12-15 11:42:56,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:42:56,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:42:56,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:42:56,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:42:56,266 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:42:56,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_queue-1.i [2021-12-15 11:42:56,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9237005/cf18fd181b5c421a97cd42043fc887a4/FLAG0f0a1db40 [2021-12-15 11:42:56,694 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:42:56,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_queue-1.i [2021-12-15 11:42:56,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9237005/cf18fd181b5c421a97cd42043fc887a4/FLAG0f0a1db40 [2021-12-15 11:42:57,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9237005/cf18fd181b5c421a97cd42043fc887a4 [2021-12-15 11:42:57,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:42:57,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:42:57,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:42:57,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:42:57,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:42:57,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5200ff9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57, skipping insertion in model container [2021-12-15 11:42:57,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:42:57,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:42:57,413 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/seq-pthread/cs_queue-1.i[34744,34757] [2021-12-15 11:42:57,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:42:57,541 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:42:57,562 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/seq-pthread/cs_queue-1.i[34744,34757] [2021-12-15 11:42:57,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:42:57,683 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:42:57,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57 WrapperNode [2021-12-15 11:42:57,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:42:57,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:42:57,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:42:57,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:42:57,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,820 INFO L137 Inliner]: procedures = 251, calls = 536, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 1156 [2021-12-15 11:42:57,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:42:57,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:42:57,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:42:57,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:42:57,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:42:57,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:42:57,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:42:57,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:42:57,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (1/1) ... [2021-12-15 11:42:57,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:42:57,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:42:57,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:42:57,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:42:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 11:42:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 11:42:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 11:42:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure empty [2021-12-15 11:42:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure empty [2021-12-15 11:42:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2021-12-15 11:42:58,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2021-12-15 11:42:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 11:42:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 11:42:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 11:42:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2021-12-15 11:42:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2021-12-15 11:42:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 11:42:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:42:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:42:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 11:42:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:42:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 11:42:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2021-12-15 11:42:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2021-12-15 11:42:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2021-12-15 11:42:58,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2021-12-15 11:42:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-15 11:42:58,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-15 11:42:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2021-12-15 11:42:58,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2021-12-15 11:42:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:42:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:42:58,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:42:58,147 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:42:58,149 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:42:58,205 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,206 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,206 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2021-12-15 11:42:58,206 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2021-12-15 11:42:58,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1093: SUMMARY for call __CS_cs(); srcloc: null [2021-12-15 11:42:58,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1093-1: assume 0 != ~__CS_ret~0 % 256;t2_#res#1.base, t2_#res#1.offset := 0, 0; [2021-12-15 11:42:58,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1093-1: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1129: SUMMARY for call __CS_cs(); srcloc: null [2021-12-15 11:42:58,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1129-1: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-12-15 11:42:58,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1129-1: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume 0 != ~__CS_ret~0 % 256;t2_#res#1.base, t2_#res#1.offset := 0, 0; [2021-12-15 11:42:58,587 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,587 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,587 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume 0 != ~__CS_ret~0 % 256;dequeue_#res#1 := 0; [2021-12-15 11:42:58,587 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##89: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume 0 != ~__CS_ret~0 % 256;t2_#res#1.base, t2_#res#1.offset := 0, 0; [2021-12-15 11:42:58,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-12-15 11:42:58,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-12-15 11:42:58,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##149: assume 0 != ~__CS_ret~0 % 256;enqueue_#res#1 := 0; [2021-12-15 11:42:58,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##150: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,589 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##166: assume 0 != ~__CS_ret~0 % 256;t1_#res#1.base, t1_#res#1.offset := 0, 0; [2021-12-15 11:42:58,589 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##167: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:42:58,589 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume 0 != ~__CS_ret~0 % 256;t2_#res#1.base, t2_#res#1.offset := 0, 0; [2021-12-15 11:42:58,589 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !(0 != ~__CS_ret~0 % 256); [2021-12-15 11:43:01,927 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:43:01,934 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:43:01,947 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-15 11:43:01,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:43:01 BoogieIcfgContainer [2021-12-15 11:43:01,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:43:01,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:43:01,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:43:01,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:43:01,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:42:57" (1/3) ... [2021-12-15 11:43:01,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5e1e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:43:01, skipping insertion in model container [2021-12-15 11:43:01,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:57" (2/3) ... [2021-12-15 11:43:01,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5e1e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:43:01, skipping insertion in model container [2021-12-15 11:43:01,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:43:01" (3/3) ... [2021-12-15 11:43:01,956 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_queue-1.i [2021-12-15 11:43:01,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:43:01,961 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:43:02,043 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:43:02,057 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:43:02,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:43:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 205 states have (on average 1.473170731707317) internal successors, (302), 207 states have internal predecessors, (302), 132 states have call successors, (132), 9 states have call predecessors, (132), 9 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2021-12-15 11:43:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-12-15 11:43:02,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:43:02,137 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:43:02,138 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:43:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:43:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1558796267, now seen corresponding path program 1 times [2021-12-15 11:43:02,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:43:02,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507788836] [2021-12-15 11:43:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:43:02,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms