./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 00:07:17,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 00:07:17,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 00:07:17,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 00:07:17,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 00:07:17,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 00:07:17,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 00:07:17,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 00:07:17,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 00:07:17,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 00:07:17,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 00:07:17,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 00:07:17,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 00:07:17,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 00:07:17,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 00:07:17,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 00:07:17,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 00:07:17,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 00:07:17,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 00:07:17,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 00:07:17,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 00:07:17,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 00:07:17,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 00:07:17,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 00:07:17,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 00:07:17,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 00:07:17,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 00:07:17,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 00:07:17,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 00:07:17,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 00:07:17,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 00:07:17,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 00:07:17,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 00:07:17,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 00:07:17,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 00:07:17,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 00:07:17,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 00:07:17,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 00:07:17,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 00:07:17,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 00:07:17,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 00:07:17,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 00:07:17,931 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 00:07:17,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 00:07:17,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 00:07:17,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 00:07:17,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 00:07:17,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 00:07:17,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 00:07:17,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 00:07:17,935 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 00:07:17,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 00:07:17,936 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 00:07:17,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 00:07:17,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 00:07:17,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 00:07:17,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 00:07:17,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 00:07:17,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 00:07:17,938 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 00:07:17,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 00:07:17,938 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 00:07:17,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 00:07:17,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 00:07:17,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 00:07:17,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 00:07:17,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:07:17,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 00:07:17,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 00:07:17,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 00:07:17,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 00:07:17,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 00:07:17,940 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 00:07:17,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 00:07:17,941 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 00:07:17,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 00:07:17,941 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 00:07:17,942 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 00:07:18,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 00:07:18,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 00:07:18,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 00:07:18,312 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 00:07:18,312 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 00:07:18,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-31 00:07:19,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 00:07:19,925 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 00:07:19,925 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-31 00:07:19,943 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f135ee75/aca153a951ef40738d308250190ad5f5/FLAG42055a4ed [2023-08-31 00:07:19,955 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f135ee75/aca153a951ef40738d308250190ad5f5 [2023-08-31 00:07:19,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 00:07:19,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 00:07:19,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 00:07:19,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 00:07:19,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 00:07:19,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:07:19" (1/1) ... [2023-08-31 00:07:19,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d8786b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:19, skipping insertion in model container [2023-08-31 00:07:19,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:07:19" (1/1) ... [2023-08-31 00:07:19,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 00:07:20,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 00:07:20,372 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2023-08-31 00:07:20,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:07:20,427 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 00:07:20,464 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2023-08-31 00:07:20,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:07:20,545 INFO L208 MainTranslator]: Completed translation [2023-08-31 00:07:20,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20 WrapperNode [2023-08-31 00:07:20,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 00:07:20,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 00:07:20,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 00:07:20,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 00:07:20,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,637 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 202 [2023-08-31 00:07:20,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 00:07:20,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 00:07:20,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 00:07:20,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 00:07:20,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 00:07:20,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 00:07:20,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 00:07:20,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 00:07:20,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (1/1) ... [2023-08-31 00:07:20,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:07:20,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:07:20,702 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) [2023-08-31 00:07:20,731 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 [2023-08-31 00:07:20,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 00:07:20,751 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-31 00:07:20,751 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-31 00:07:20,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 00:07:20,751 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 00:07:20,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 00:07:20,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 00:07:20,752 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-31 00:07:20,752 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-31 00:07:20,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 00:07:20,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 00:07:20,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 00:07:20,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 00:07:20,754 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 00:07:20,945 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 00:07:20,947 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 00:07:21,203 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 00:07:21,211 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 00:07:21,212 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-31 00:07:21,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:07:21 BoogieIcfgContainer [2023-08-31 00:07:21,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 00:07:21,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 00:07:21,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 00:07:21,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 00:07:21,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 12:07:19" (1/3) ... [2023-08-31 00:07:21,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4a3de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:07:21, skipping insertion in model container [2023-08-31 00:07:21,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:07:20" (2/3) ... [2023-08-31 00:07:21,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4a3de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:07:21, skipping insertion in model container [2023-08-31 00:07:21,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:07:21" (3/3) ... [2023-08-31 00:07:21,229 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-08-31 00:07:21,237 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 00:07:21,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 00:07:21,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-31 00:07:21,245 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 00:07:21,352 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 00:07:21,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 200 transitions, 422 flow [2023-08-31 00:07:21,563 INFO L130 PetriNetUnfolder]: 58/358 cut-off events. [2023-08-31 00:07:21,563 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 00:07:21,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 358 events. 58/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1460 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-08-31 00:07:21,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 200 transitions, 422 flow [2023-08-31 00:07:21,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 200 transitions, 422 flow [2023-08-31 00:07:21,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 00:07:21,607 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 200 transitions, 422 flow [2023-08-31 00:07:21,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 200 transitions, 422 flow [2023-08-31 00:07:21,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 200 transitions, 422 flow [2023-08-31 00:07:21,679 INFO L130 PetriNetUnfolder]: 58/358 cut-off events. [2023-08-31 00:07:21,679 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 00:07:21,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 358 events. 58/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1460 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-08-31 00:07:21,697 INFO L119 LiptonReduction]: Number of co-enabled transitions 15876 [2023-08-31 00:07:25,204 INFO L134 LiptonReduction]: Checked pairs total: 27843 [2023-08-31 00:07:25,217 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-31 00:07:25,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 00:07:25,252 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@77dc183f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 00:07:25,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-31 00:07:25,258 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-08-31 00:07:25,258 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:07:25,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:07:25,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 00:07:25,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 00:07:25,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:07:25,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1882836693, now seen corresponding path program 1 times [2023-08-31 00:07:25,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:07:25,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715135887] [2023-08-31 00:07:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:07:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:07:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 00:07:25,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 00:07:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 00:07:25,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 00:07:25,416 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 00:07:25,417 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-31 00:07:25,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-31 00:07:25,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-31 00:07:25,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-31 00:07:25,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-31 00:07:25,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-31 00:07:25,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 00:07:25,421 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 00:07:25,423 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 00:07:25,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 00:07:25,466 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 00:07:25,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 314 transitions, 676 flow [2023-08-31 00:07:25,719 INFO L130 PetriNetUnfolder]: 197/1046 cut-off events. [2023-08-31 00:07:25,719 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-08-31 00:07:25,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 1046 events. 197/1046 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6040 event pairs, 1 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 647. Up to 32 conditions per place. [2023-08-31 00:07:25,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 314 transitions, 676 flow [2023-08-31 00:07:25,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 314 transitions, 676 flow [2023-08-31 00:07:25,745 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 00:07:25,745 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 314 transitions, 676 flow [2023-08-31 00:07:25,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 314 transitions, 676 flow [2023-08-31 00:07:25,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 314 transitions, 676 flow [2023-08-31 00:07:25,923 INFO L130 PetriNetUnfolder]: 197/1046 cut-off events. [2023-08-31 00:07:25,924 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-08-31 00:07:25,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 1046 events. 197/1046 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6040 event pairs, 1 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 647. Up to 32 conditions per place. [2023-08-31 00:07:25,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 57240 [2023-08-31 00:07:29,718 INFO L134 LiptonReduction]: Checked pairs total: 124201 [2023-08-31 00:07:29,719 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-08-31 00:07:29,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 00:07:29,722 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@77dc183f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 00:07:29,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-31 00:07:29,726 INFO L130 PetriNetUnfolder]: 5/40 cut-off events. [2023-08-31 00:07:29,726 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 00:07:29,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:07:29,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:07:29,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-08-31 00:07:29,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:07:29,727 INFO L85 PathProgramCache]: Analyzing trace with hash 561286303, now seen corresponding path program 1 times [2023-08-31 00:07:29,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:07:29,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460042701] [2023-08-31 00:07:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:07:29,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:07:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:07:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:07:29,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:07:29,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460042701] [2023-08-31 00:07:29,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460042701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:07:29,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:07:29,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 00:07:29,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567208905] [2023-08-31 00:07:29,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:07:29,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 00:07:29,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:07:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 00:07:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 00:07:29,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 519 [2023-08-31 00:07:29,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 152 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:07:29,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:07:29,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 519 [2023-08-31 00:07:29,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand