./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 559b036c 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 0.2.3-?-559b036-m [2023-11-23 03:15:47,426 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 03:15:47,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-23 03:15:47,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 03:15:47,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 03:15:47,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 03:15:47,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 03:15:47,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 03:15:47,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 03:15:47,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 03:15:47,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 03:15:47,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 03:15:47,549 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 03:15:47,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 03:15:47,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 03:15:47,551 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 03:15:47,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 03:15:47,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 03:15:47,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 03:15:47,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 03:15:47,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 03:15:47,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 03:15:47,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 03:15:47,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 03:15:47,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 03:15:47,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 03:15:47,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 03:15:47,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 03:15:47,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 03:15:47,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 03:15:47,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 03:15:47,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 03:15:47,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 03:15:47,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 03:15:47,556 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-23 03:15:47,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 03:15:47,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 03:15:47,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-23 03:15:47,557 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 03:15:47,557 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-23 03:15:47,557 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-23 03:15:47,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2023-11-23 03:15:47,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 03:15:47,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 03:15:47,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 03:15:47,815 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 03:15:47,816 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 03:15:47,817 INFO L431 ainManager$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 [2023-11-23 03:15:48,883 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 03:15:49,100 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 03:15:49,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-23 03:15:49,116 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/5f49ac87f/264009c321fe46e6a6217f65ca488211/FLAG28b5ef1cc [2023-11-23 03:15:49,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/5f49ac87f/264009c321fe46e6a6217f65ca488211 [2023-11-23 03:15:49,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 03:15:49,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 03:15:49,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 03:15:49,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 03:15:49,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 03:15:49,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac8aa25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49, skipping insertion in model container [2023-11-23 03:15:49,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,183 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 03:15:49,646 WARN L240 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] [2023-11-23 03:15:49,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 03:15:49,693 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 03:15:49,728 WARN L240 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] [2023-11-23 03:15:49,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 03:15:49,882 INFO L206 MainTranslator]: Completed translation [2023-11-23 03:15:49,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49 WrapperNode [2023-11-23 03:15:49,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 03:15:49,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 03:15:49,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 03:15:49,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 03:15:49,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,935 INFO L138 Inliner]: procedures = 378, calls = 82, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 269 [2023-11-23 03:15:49,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 03:15:49,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 03:15:49,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 03:15:49,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 03:15:49,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,963 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 03:15:49,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 03:15:49,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 03:15:49,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 03:15:49,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (1/1) ... [2023-11-23 03:15:49,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 03:15:49,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 03:15:50,034 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) [2023-11-23 03:15:50,055 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 [2023-11-23 03:15:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 03:15:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 03:15:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 03:15:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 03:15:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 03:15:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 03:15:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 03:15:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 03:15:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 03:15:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 03:15:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 03:15:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-23 03:15:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-23 03:15:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 03:15:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 03:15:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 03:15:50,097 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 03:15:50,272 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 03:15:50,274 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 03:15:50,601 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 03:15:50,828 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 03:15:50,829 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-23 03:15:50,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:15:50 BoogieIcfgContainer [2023-11-23 03:15:50,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 03:15:50,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 03:15:50,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 03:15:50,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 03:15:50,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:15:49" (1/3) ... [2023-11-23 03:15:50,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2217227f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:15:50, skipping insertion in model container [2023-11-23 03:15:50,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:49" (2/3) ... [2023-11-23 03:15:50,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2217227f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:15:50, skipping insertion in model container [2023-11-23 03:15:50,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:15:50" (3/3) ... [2023-11-23 03:15:50,839 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-11-23 03:15:50,847 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 03:15:50,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 03:15:50,855 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 03:15:50,855 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 03:15:50,902 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-23 03:15:50,943 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 03:15:50,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-23 03:15:50,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 03:15:50,945 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) [2023-11-23 03:15:51,000 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 [2023-11-23 03:15:51,028 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-23 03:15:51,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2023-11-23 03:15:51,042 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=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;@1d10c24e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 03:15:51,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 03:15:54,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 03:15:54,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 03:15:54,831 INFO L85 PathProgramCache]: Analyzing trace with hash -459628659, now seen corresponding path program 1 times [2023-11-23 03:15:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 03:15:54,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309941186] [2023-11-23 03:15:54,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 03:15:54,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 03:15:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 03:15:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 03:15:55,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 03:15:55,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309941186] [2023-11-23 03:15:55,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309941186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 03:15:55,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 03:15:55,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 03:15:55,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5199553] [2023-11-23 03:15:55,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 03:15:55,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 03:15:55,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 03:15:55,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 03:15:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 03:15:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 03:15:55,216 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 03:15:55,252 INFO L496 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) [2023-11-23 03:15:55,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 03:16:15,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 03:16:15,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 03:16:15,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 03:16:15,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 03:16:15,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1680005222, now seen corresponding path program 1 times [2023-11-23 03:16:15,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 03:16:15,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35245174] [2023-11-23 03:16:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 03:16:15,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 03:16:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 03:16:15,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 03:16:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 03:16:15,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 03:16:15,426 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 03:16:15,427 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 03:16:15,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 03:16:15,436 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 03:16:15,437 INFO L307 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was UNSAFE (1/2) [2023-11-23 03:16:15,440 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 03:16:15,440 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 03:16:15,483 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre52 could not be translated [2023-11-23 03:16:15,484 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre52 could not be translated [2023-11-23 03:16:15,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:16:15 BasicIcfg [2023-11-23 03:16:15,490 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 03:16:15,491 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 03:16:15,491 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 03:16:15,491 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 03:16:15,492 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:15:50" (3/4) ... [2023-11-23 03:16:15,492 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 03:16:15,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre52 could not be translated [2023-11-23 03:16:15,509 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre52 could not be translated [2023-11-23 03:16:15,548 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2023-11-23 03:16:15,549 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 03:16:15,549 INFO L158 Benchmark]: Toolchain (without parser) took 26421.15ms. Allocated memory was 155.2MB in the beginning and 237.0MB in the end (delta: 81.8MB). Free memory was 94.8MB in the beginning and 187.2MB in the end (delta: -92.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 03:16:15,551 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 03:16:15,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 754.15ms. Allocated memory was 155.2MB in the beginning and 237.0MB in the end (delta: 81.8MB). Free memory was 94.5MB in the beginning and 191.1MB in the end (delta: -96.7MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2023-11-23 03:16:15,551 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.42ms. Allocated memory is still 237.0MB. Free memory was 191.1MB in the beginning and 187.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 03:16:15,552 INFO L158 Benchmark]: Boogie Preprocessor took 27.71ms. Allocated memory is still 237.0MB. Free memory was 187.1MB in the beginning and 185.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 03:16:15,552 INFO L158 Benchmark]: RCFGBuilder took 865.56ms. Allocated memory is still 237.0MB. Free memory was 185.0MB in the beginning and 114.8MB in the end (delta: 70.3MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2023-11-23 03:16:15,552 INFO L158 Benchmark]: TraceAbstraction took 24658.14ms. Allocated memory is still 237.0MB. Free memory was 114.8MB in the beginning and 192.4MB in the end (delta: -77.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2023-11-23 03:16:15,552 INFO L158 Benchmark]: Witness Printer took 57.64ms. Allocated memory is still 237.0MB. Free memory was 192.4MB in the beginning and 187.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 03:16:15,554 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 754.15ms. Allocated memory was 155.2MB in the beginning and 237.0MB in the end (delta: 81.8MB). Free memory was 94.5MB in the beginning and 191.1MB in the end (delta: -96.7MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.42ms. Allocated memory is still 237.0MB. Free memory was 191.1MB in the beginning and 187.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.71ms. Allocated memory is still 237.0MB. Free memory was 187.1MB in the beginning and 185.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 865.56ms. Allocated memory is still 237.0MB. Free memory was 185.0MB in the beginning and 114.8MB in the end (delta: 70.3MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * TraceAbstraction took 24658.14ms. Allocated memory is still 237.0MB. Free memory was 114.8MB in the beginning and 192.4MB in the end (delta: -77.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 57.64ms. Allocated memory is still 237.0MB. Free memory was 192.4MB in the beginning and 187.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre52 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre52 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 8669, independent: 8027, independent conditional: 1321, independent unconditional: 6706, dependent: 612, dependent conditional: 521, dependent unconditional: 91, unknown: 30, unknown conditional: 12, unknown unconditional: 18] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8200, independent: 8027, independent conditional: 1321, 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: 8200, independent: 8027, independent conditional: 1321, 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: 8264, independent: 8027, independent conditional: 0, independent unconditional: 8027, dependent: 195, dependent conditional: 52, dependent unconditional: 143, unknown: 42, unknown conditional: 12, unknown unconditional: 30] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8264, independent: 8027, independent conditional: 0, independent unconditional: 8027, 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: 8264, independent: 8027, independent conditional: 0, independent unconditional: 8027, 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: 3529, independent: 3418, independent conditional: 0, independent unconditional: 3418, 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: 3529, independent: 3363, independent conditional: 0, independent unconditional: 3363, 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: 23406, independent: 135, independent conditional: 0, independent unconditional: 135, dependent: 566, dependent conditional: 0, dependent unconditional: 566, unknown: 22706, unknown conditional: 0, unknown unconditional: 22706] , Protected Queries: 0 ], Cache Queries: [ total: 8264, independent: 4609, independent conditional: 0, independent unconditional: 4609, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 3551, unknown conditional: 0, unknown unconditional: 3551] , Statistics on independence cache: Total cache size (in pairs): 3509, Positive cache size: 3418, Positive conditional cache size: 0, Positive unconditional cache size: 3418, 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: 64, Maximal queried relation: 1, Independence queries for same thread: 469 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 21.3s, 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: 8669, independent: 8027, independent conditional: 1321, independent unconditional: 6706, dependent: 612, dependent conditional: 521, dependent unconditional: 91, unknown: 30, unknown conditional: 12, unknown unconditional: 18] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8200, independent: 8027, independent conditional: 1321, 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: 8200, independent: 8027, independent conditional: 1321, 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: 8264, independent: 8027, independent conditional: 0, independent unconditional: 8027, dependent: 195, dependent conditional: 52, dependent unconditional: 143, unknown: 42, unknown conditional: 12, unknown unconditional: 30] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8264, independent: 8027, independent conditional: 0, independent unconditional: 8027, 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: 8264, independent: 8027, independent conditional: 0, independent unconditional: 8027, 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: 3529, independent: 3418, independent conditional: 0, independent unconditional: 3418, 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: 3529, independent: 3363, independent conditional: 0, independent unconditional: 3363, 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: 23406, independent: 135, independent conditional: 0, independent unconditional: 135, dependent: 566, dependent conditional: 0, dependent unconditional: 566, unknown: 22706, unknown conditional: 0, unknown unconditional: 22706] , Protected Queries: 0 ], Cache Queries: [ total: 8264, independent: 4609, independent conditional: 0, independent unconditional: 4609, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 3551, unknown conditional: 0, unknown unconditional: 3551] , Statistics on independence cache: Total cache size (in pairs): 3509, Positive cache size: 3418, Positive conditional cache size: 0, Positive unconditional cache size: 3418, 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: 64, Maximal queried relation: 1, Independence queries for same thread: 469 - 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: 24.4s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 23.7s, 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, 0.2s 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! [2023-11-23 03:16:15,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2023-11-23 03:16:15,785 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