./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a4c57e3 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-4a4c57e-m [2024-09-08 21:42:36,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-08 21:42:36,804 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-09-08 21:42:36,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-08 21:42:36,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-08 21:42:36,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-08 21:42:36,825 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-08 21:42:36,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-08 21:42:36,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-08 21:42:36,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-08 21:42:36,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-08 21:42:36,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-08 21:42:36,826 INFO L153 SettingsManager]: * Use SBE=true [2024-09-08 21:42:36,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-08 21:42:36,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-08 21:42:36,827 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-08 21:42:36,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-08 21:42:36,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-08 21:42:36,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-08 21:42:36,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-08 21:42:36,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-08 21:42:36,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-08 21:42:36,829 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-08 21:42:36,830 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-08 21:42:36,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-08 21:42:36,830 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-08 21:42:36,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-08 21:42:36,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-08 21:42:36,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-08 21:42:36,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-08 21:42:36,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-08 21:42:36,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-08 21:42:36,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-08 21:42:36,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-08 21:42:36,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-08 21:42:36,832 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-09-08 21:42:36,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-08 21:42:36,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-08 21:42:36,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-09-08 21:42:36,836 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-09-08 21:42:36,836 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-09-08 21:42:36,840 INFO L153 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/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2024-09-08 21:42:37,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-08 21:42:37,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-08 21:42:37,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-08 21:42:37,044 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-08 21:42:37,044 INFO L274 PluginConnector]: CDTParser initialized [2024-09-08 21:42:37,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-09-08 21:42:38,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-08 21:42:38,429 INFO L384 CDTParser]: Found 1 translation units. [2024-09-08 21:42:38,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-09-08 21:42:38,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/1f4ab98f2/c5d74152f9274cad95a87f291f2fd47a/FLAGfcc3291db [2024-09-08 21:42:38,456 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/1f4ab98f2/c5d74152f9274cad95a87f291f2fd47a [2024-09-08 21:42:38,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-08 21:42:38,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-08 21:42:38,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-08 21:42:38,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-08 21:42:38,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-08 21:42:38,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 09:42:38" (1/1) ... [2024-09-08 21:42:38,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c68495e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:38, skipping insertion in model container [2024-09-08 21:42:38,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 09:42:38" (1/1) ... [2024-09-08 21:42:38,501 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-08 21:42:38,886 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_94-alloc_region_racing.i[58135,58148] [2024-09-08 21:42:38,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-08 21:42:38,918 INFO L200 MainTranslator]: Completed pre-run [2024-09-08 21:42:38,948 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_94-alloc_region_racing.i[58135,58148] [2024-09-08 21:42:38,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-08 21:42:39,023 INFO L204 MainTranslator]: Completed translation [2024-09-08 21:42:39,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39 WrapperNode [2024-09-08 21:42:39,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-08 21:42:39,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-08 21:42:39,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-08 21:42:39,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-08 21:42:39,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,078 INFO L138 Inliner]: procedures = 378, calls = 82, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 266 [2024-09-08 21:42:39,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-08 21:42:39,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-08 21:42:39,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-08 21:42:39,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-08 21:42:39,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-08 21:42:39,110 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-08 21:42:39,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-08 21:42:39,110 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-08 21:42:39,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (1/1) ... [2024-09-08 21:42:39,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-08 21:42:39,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 21:42:39,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-09-08 21:42:39,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-09-08 21:42:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-08 21:42:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-09-08 21:42:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-08 21:42:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-09-08 21:42:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-09-08 21:42:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-08 21:42:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-08 21:42:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-09-08 21:42:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-08 21:42:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-08 21:42:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-09-08 21:42:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-09-08 21:42:39,198 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-09-08 21:42:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-08 21:42:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-08 21:42:39,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-08 21:42:39,200 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-09-08 21:42:39,349 INFO L242 CfgBuilder]: Building ICFG [2024-09-08 21:42:39,350 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-08 21:42:39,646 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-09-08 21:42:39,646 INFO L291 CfgBuilder]: Performing block encoding [2024-09-08 21:42:39,830 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-08 21:42:39,833 INFO L318 CfgBuilder]: Removed 23 assume(true) statements. [2024-09-08 21:42:39,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 09:42:39 BoogieIcfgContainer [2024-09-08 21:42:39,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-08 21:42:39,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-08 21:42:39,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-08 21:42:39,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-08 21:42:39,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 09:42:38" (1/3) ... [2024-09-08 21:42:39,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7ea8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 09:42:39, skipping insertion in model container [2024-09-08 21:42:39,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 09:42:39" (2/3) ... [2024-09-08 21:42:39,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7ea8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 09:42:39, skipping insertion in model container [2024-09-08 21:42:39,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 09:42:39" (3/3) ... [2024-09-08 21:42:39,840 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2024-09-08 21:42:39,853 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-08 21:42:39,853 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-08 21:42:39,853 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-09-08 21:42:39,949 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-09-08 21:42:39,991 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 21:42:39,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 21:42:39,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 21:42:39,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 21:42:39,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-09-08 21:42:40,020 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 21:42:40,031 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2024-09-08 21:42:40,036 INFO L336 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@2f886580, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 21:42:40,036 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 21:42:43,904 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 21:42:43,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 21:42:43,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1617961349, now seen corresponding path program 1 times [2024-09-08 21:42:43,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 21:42:43,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036426957] [2024-09-08 21:42:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 21:42:43,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 21:42:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 21:42:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 21:42:44,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 21:42:44,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036426957] [2024-09-08 21:42:44,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036426957] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 21:42:44,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 21:42:44,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 21:42:44,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672981272] [2024-09-08 21:42:44,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 21:42:44,182 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-08 21:42:44,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 21:42:44,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-08 21:42:44,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-08 21:42:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 21:42:44,202 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 21:42:44,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2024-09-08 21:42:44,204 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 21:43:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 21:43:04,892 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-08 21:43:04,892 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 21:43:04,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 21:43:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash 312496084, now seen corresponding path program 1 times [2024-09-08 21:43:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 21:43:04,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199753025] [2024-09-08 21:43:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 21:43:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 21:43:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 21:43:04,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-08 21:43:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 21:43:05,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-08 21:43:05,067 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-08 21:43:05,068 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-08 21:43:05,069 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-08 21:43:05,086 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1] [2024-09-08 21:43:05,088 INFO L312 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was UNSAFE (1/2) [2024-09-08 21:43:05,129 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-09-08 21:43:05,130 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-08 21:43:05,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 09:43:05 BasicIcfg [2024-09-08 21:43:05,133 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-08 21:43:05,133 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-08 21:43:05,133 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-08 21:43:05,133 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-08 21:43:05,134 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 09:42:39" (3/4) ... [2024-09-08 21:43:05,134 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-09-08 21:43:05,175 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2024-09-08 21:43:05,176 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-08 21:43:05,176 INFO L158 Benchmark]: Toolchain (without parser) took 26717.49ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 68.8MB in the beginning and 65.4MB in the end (delta: 3.4MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. [2024-09-08 21:43:05,176 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 92.0MB in the end (delta: 159.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-08 21:43:05,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.75ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 68.5MB in the beginning and 130.0MB in the end (delta: -61.5MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2024-09-08 21:43:05,177 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.88ms. Allocated memory is still 188.7MB. Free memory was 130.0MB in the beginning and 126.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-08 21:43:05,178 INFO L158 Benchmark]: Boogie Preprocessor took 30.34ms. Allocated memory is still 188.7MB. Free memory was 126.8MB in the beginning and 124.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-08 21:43:05,178 INFO L158 Benchmark]: RCFGBuilder took 723.60ms. Allocated memory is still 188.7MB. Free memory was 124.7MB in the beginning and 54.5MB in the end (delta: 70.3MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2024-09-08 21:43:05,178 INFO L158 Benchmark]: TraceAbstraction took 25297.60ms. Allocated memory is still 188.7MB. Free memory was 54.5MB in the beginning and 71.2MB in the end (delta: -16.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-08 21:43:05,178 INFO L158 Benchmark]: Witness Printer took 42.72ms. Allocated memory is still 188.7MB. Free memory was 71.2MB in the beginning and 65.4MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-08 21:43:05,179 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 92.0MB in the end (delta: 159.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.75ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 68.5MB in the beginning and 130.0MB in the end (delta: -61.5MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.88ms. Allocated memory is still 188.7MB. Free memory was 130.0MB in the beginning and 126.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.34ms. Allocated memory is still 188.7MB. Free memory was 126.8MB in the beginning and 124.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 723.60ms. Allocated memory is still 188.7MB. Free memory was 124.7MB in the beginning and 54.5MB in the end (delta: 70.3MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * TraceAbstraction took 25297.60ms. Allocated memory is still 188.7MB. Free memory was 54.5MB in the beginning and 71.2MB in the end (delta: -16.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 42.72ms. Allocated memory is still 188.7MB. Free memory was 71.2MB in the beginning and 65.4MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 8027, independent: 7625, independent conditional: 919, independent unconditional: 6706, dependent: 372, dependent conditional: 281, dependent unconditional: 91, unknown: 30, unknown conditional: 12, unknown unconditional: 18] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7798, independent: 7625, independent conditional: 919, independent unconditional: 6706, dependent: 143, dependent conditional: 52, dependent unconditional: 91, unknown: 30, unknown conditional: 12, unknown unconditional: 18] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 7798, independent: 7625, independent conditional: 919, independent unconditional: 6706, dependent: 143, dependent conditional: 52, dependent unconditional: 91, unknown: 30, unknown conditional: 12, unknown unconditional: 18] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7862, independent: 7625, independent conditional: 919, independent unconditional: 6706, dependent: 195, dependent conditional: 104, dependent unconditional: 91, unknown: 42, unknown conditional: 24, unknown unconditional: 18] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 7862, independent: 7625, independent conditional: 0, independent unconditional: 7625, dependent: 195, dependent conditional: 0, dependent unconditional: 195, unknown: 42, unknown conditional: 0, unknown unconditional: 42] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7862, independent: 7625, independent conditional: 0, independent unconditional: 7625, dependent: 195, dependent conditional: 0, dependent unconditional: 195, unknown: 42, unknown conditional: 0, unknown unconditional: 42] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3527, independent: 3416, independent conditional: 0, independent unconditional: 3416, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3527, independent: 3361, independent conditional: 0, independent unconditional: 3361, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 166, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 166, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24244, independent: 118, independent conditional: 0, independent unconditional: 118, dependent: 537, dependent conditional: 0, dependent unconditional: 537, unknown: 23589, unknown conditional: 0, unknown unconditional: 23589] , Protected Queries: 0 ], Cache Queries: [ total: 7862, independent: 4209, independent conditional: 0, independent unconditional: 4209, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 3549, unknown conditional: 0, unknown unconditional: 3549] , Statistics on independence cache: Total cache size (in pairs): 3507, Positive cache size: 3416, Positive conditional cache size: 0, Positive unconditional cache size: 3416, Negative cache size: 91, Negative conditional cache size: 0, Negative unconditional cache size: 91, Unknown cache size: 20, Unknown conditional cache size: 0, Unknown unconditional cache size: 20, Eliminated conditions: 1047, Maximal queried relation: 1, Independence queries for same thread: 229, Persistent sets #1 benchmarks: Persistent set computation time: 21.8s, Number of persistent set computation: 652, Number of trivial persistent sets: 540, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6815, independent: 6706, independent conditional: 0, independent unconditional: 6706, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 8027, independent: 7625, independent conditional: 919, independent unconditional: 6706, dependent: 372, dependent conditional: 281, dependent unconditional: 91, unknown: 30, unknown conditional: 12, unknown unconditional: 18] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7798, independent: 7625, independent conditional: 919, independent unconditional: 6706, dependent: 143, dependent conditional: 52, dependent unconditional: 91, unknown: 30, unknown conditional: 12, unknown unconditional: 18] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 7798, independent: 7625, independent conditional: 919, independent unconditional: 6706, dependent: 143, dependent conditional: 52, dependent unconditional: 91, unknown: 30, unknown conditional: 12, unknown unconditional: 18] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7862, independent: 7625, independent conditional: 919, independent unconditional: 6706, dependent: 195, dependent conditional: 104, dependent unconditional: 91, unknown: 42, unknown conditional: 24, unknown unconditional: 18] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 7862, independent: 7625, independent conditional: 0, independent unconditional: 7625, dependent: 195, dependent conditional: 0, dependent unconditional: 195, unknown: 42, unknown conditional: 0, unknown unconditional: 42] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7862, independent: 7625, independent conditional: 0, independent unconditional: 7625, dependent: 195, dependent conditional: 0, dependent unconditional: 195, unknown: 42, unknown conditional: 0, unknown unconditional: 42] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3527, independent: 3416, independent conditional: 0, independent unconditional: 3416, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3527, independent: 3361, independent conditional: 0, independent unconditional: 3361, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 166, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 166, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24244, independent: 118, independent conditional: 0, independent unconditional: 118, dependent: 537, dependent conditional: 0, dependent unconditional: 537, unknown: 23589, unknown conditional: 0, unknown unconditional: 23589] , Protected Queries: 0 ], Cache Queries: [ total: 7862, independent: 4209, independent conditional: 0, independent unconditional: 4209, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 3549, unknown conditional: 0, unknown unconditional: 3549] , Statistics on independence cache: Total cache size (in pairs): 3507, Positive cache size: 3416, Positive conditional cache size: 0, Positive unconditional cache size: 3416, Negative cache size: 91, Negative conditional cache size: 0, Negative unconditional cache size: 91, Unknown cache size: 20, Unknown conditional cache size: 0, Unknown unconditional cache size: 20, Eliminated conditions: 1047, Maximal queried relation: 1, Independence queries for same thread: 229 - CounterExampleResult [Line: 1235]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1240] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1241-L1244] 0 struct s { int datum; struct s *next; } *A; [L1253] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1254] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1267] 0 struct s *p; [L1268] 0 A = malloc(sizeof(struct s)) [L1269] EXPR 0 \read(*A) [L1269] CALL 0 init(A,3) [L1246] 0 p -> datum = x [L1247] 0 p -> next = ((void *)0) [L1269] RET 0 init(A,3) [L1270] 0 pthread_t t_ids[10000]; [L1270] 0 int i=0; VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=0, t_ids={14:0}] [L1270] COND TRUE 0 i<10000 [L1270] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=0, t_ids={14:0}] [L1256] 1 struct s *p = malloc(sizeof(struct s)); [L1257] CALL 1 init(p,7) [L1246] 1 p -> datum = x [L1247] 1 p -> next = ((void *)0) [L1257] RET 1 init(p,7) [L1259] CALL 1 insert(p, &A) [L1250] EXPR 1 \read(**list) [L1250] 1 p->next = *list [L1251] 1 *list = p [L1259] RET 1 insert(p, &A) [L1270] 0 i++ VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=1, t_ids={14:0}] [L1262] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1270] COND TRUE 0 i<10000 [L1270] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=1, t_ids={14:0}] [L1262] EXPR 1 p->datum [L1262] CALL 1 __VERIFIER_assert((p->datum) == 0) [L1235] COND TRUE 1 !(cond) VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, \old(cond)=0, __global_lock={3:0}, cond=0] [L1235] 1 reach_error() VAL [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, \old(cond)=0, __global_lock={3:0}, cond=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t_funThread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 112 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 25.1s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 24.6s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-09-08 21:43:05,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2024-09-08 21:43:05,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE