./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ebd41074 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --- Real Ultimate output --- This is Ultimate 0.3.0-dev-ebd4107-m [2025-01-23 01:04:08,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-23 01:04:08,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-01-23 01:04:08,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-23 01:04:08,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-23 01:04:09,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-23 01:04:09,004 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-23 01:04:09,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-23 01:04:09,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-23 01:04:09,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-23 01:04:09,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-23 01:04:09,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-23 01:04:09,005 INFO L153 SettingsManager]: * Use SBE=true [2025-01-23 01:04:09,005 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-23 01:04:09,005 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-23 01:04:09,005 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-23 01:04:09,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-23 01:04:09,006 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-23 01:04:09,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-23 01:04:09,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-23 01:04:09,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-23 01:04:09,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-23 01:04:09,006 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-23 01:04:09,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-23 01:04:09,006 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-23 01:04:09,006 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-23 01:04:09,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-23 01:04:09,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-23 01:04:09,007 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-23 01:04:09,007 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-23 01:04:09,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 01:04:09,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-23 01:04:09,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-23 01:04:09,007 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-23 01:04:09,007 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-01-23 01:04:09,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-23 01:04:09,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-23 01:04:09,008 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-01-23 01:04:09,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-23 01:04:09,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-23 01:04:09,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-01-23 01:04:09,008 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-01-23 01:04:09,008 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-01-23 01:04:09,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-jdk21/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 -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE [2025-01-23 01:04:09,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-23 01:04:09,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-23 01:04:09,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-23 01:04:09,271 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-23 01:04:09,272 INFO L274 PluginConnector]: CDTParser initialized [2025-01-23 01:04:09,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2025-01-23 01:04:10,410 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/930bc754b/0d3e89c805f446b2b0b18f0412f87599/FLAGe73ba28ec [2025-01-23 01:04:10,649 INFO L384 CDTParser]: Found 1 translation units. [2025-01-23 01:04:10,650 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2025-01-23 01:04:10,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/930bc754b/0d3e89c805f446b2b0b18f0412f87599/FLAGe73ba28ec [2025-01-23 01:04:10,981 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/930bc754b/0d3e89c805f446b2b0b18f0412f87599 [2025-01-23 01:04:10,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-23 01:04:10,984 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-23 01:04:10,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-23 01:04:10,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-23 01:04:10,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-23 01:04:10,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 01:04:10" (1/1) ... [2025-01-23 01:04:10,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a714ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:10, skipping insertion in model container [2025-01-23 01:04:10,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 01:04:10" (1/1) ... [2025-01-23 01:04:11,013 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-23 01:04:11,218 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2025-01-23 01:04:11,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 01:04:11,228 INFO L200 MainTranslator]: Completed pre-run [2025-01-23 01:04:11,283 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2025-01-23 01:04:11,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 01:04:11,309 INFO L204 MainTranslator]: Completed translation [2025-01-23 01:04:11,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11 WrapperNode [2025-01-23 01:04:11,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-23 01:04:11,312 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-23 01:04:11,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-23 01:04:11,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-23 01:04:11,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,328 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,340 INFO L138 Inliner]: procedures = 166, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2025-01-23 01:04:11,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-23 01:04:11,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-23 01:04:11,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-23 01:04:11,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-23 01:04:11,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,352 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-23 01:04:11,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-23 01:04:11,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-23 01:04:11,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-23 01:04:11,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (1/1) ... [2025-01-23 01:04:11,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 01:04:11,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 01:04:11,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-01-23 01:04:11,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-01-23 01:04:11,410 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-01-23 01:04:11,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-01-23 01:04:11,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-23 01:04:11,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-23 01:04:11,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-23 01:04:11,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-23 01:04:11,411 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-23 01:04:11,478 INFO L234 CfgBuilder]: Building ICFG [2025-01-23 01:04:11,479 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-23 01:04:11,561 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-23 01:04:11,561 INFO L283 CfgBuilder]: Performing block encoding [2025-01-23 01:04:11,637 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-23 01:04:11,638 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-23 01:04:11,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 01:04:11 BoogieIcfgContainer [2025-01-23 01:04:11,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-23 01:04:11,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-23 01:04:11,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-23 01:04:11,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-23 01:04:11,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 01:04:10" (1/3) ... [2025-01-23 01:04:11,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169ec25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 01:04:11, skipping insertion in model container [2025-01-23 01:04:11,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 01:04:11" (2/3) ... [2025-01-23 01:04:11,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169ec25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 01:04:11, skipping insertion in model container [2025-01-23 01:04:11,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 01:04:11" (3/3) ... [2025-01-23 01:04:11,647 INFO L128 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2025-01-23 01:04:11,658 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-23 01:04:11,659 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28_buggy_simple_loop1_vf.i that has 2 procedures, 15 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-01-23 01:04:11,659 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-23 01:04:11,708 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-23 01:04:11,737 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 01:04:11,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-01-23 01:04:11,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 01:04:11,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-01-23 01:04:11,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-01-23 01:04:11,817 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-01-23 01:04:11,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2025-01-23 01:04:11,841 INFO L333 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;@2410d8a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 01:04:11,841 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-23 01:04:12,018 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-23 01:04:12,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 01:04:12,021 INFO L85 PathProgramCache]: Analyzing trace with hash -301422642, now seen corresponding path program 1 times [2025-01-23 01:04:12,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 01:04:12,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353887113] [2025-01-23 01:04:12,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 01:04:12,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 01:04:12,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-23 01:04:12,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-23 01:04:12,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 01:04:12,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-23 01:04:12,119 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-23 01:04:12,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-23 01:04:12,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-23 01:04:12,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 01:04:12,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-23 01:04:12,161 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-23 01:04:12,163 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-23 01:04:12,163 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-23 01:04:12,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-23 01:04:12,170 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-23 01:04:12,171 INFO L319 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was UNSAFE (1/2) [2025-01-23 01:04:12,189 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-23 01:04:12,189 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-23 01:04:12,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-01-23 01:04:12,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 01:04:12 BasicIcfg [2025-01-23 01:04:12,202 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-23 01:04:12,202 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-23 01:04:12,202 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-23 01:04:12,202 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-23 01:04:12,203 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 01:04:11" (3/4) ... [2025-01-23 01:04:12,204 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-01-23 01:04:12,235 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 3. [2025-01-23 01:04:12,261 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-01-23 01:04:12,261 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/witness.yml [2025-01-23 01:04:12,261 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-23 01:04:12,262 INFO L158 Benchmark]: Toolchain (without parser) took 1278.23ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 59.2MB in the end (delta: 32.0MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2025-01-23 01:04:12,262 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 83.9MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-23 01:04:12,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.65ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 70.3MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-23 01:04:12,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.32ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-23 01:04:12,263 INFO L158 Benchmark]: Boogie Preprocessor took 20.22ms. Allocated memory is still 117.4MB. Free memory was 68.8MB in the beginning and 67.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-23 01:04:12,263 INFO L158 Benchmark]: RCFGBuilder took 275.74ms. Allocated memory is still 117.4MB. Free memory was 67.8MB in the beginning and 51.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-23 01:04:12,263 INFO L158 Benchmark]: TraceAbstraction took 561.41ms. Allocated memory is still 117.4MB. Free memory was 50.6MB in the beginning and 64.7MB in the end (delta: -14.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-23 01:04:12,263 INFO L158 Benchmark]: Witness Printer took 58.95ms. Allocated memory is still 117.4MB. Free memory was 64.7MB in the beginning and 59.2MB in the end (delta: 5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-23 01:04:12,264 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 83.9MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.65ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 70.3MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.32ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.22ms. Allocated memory is still 117.4MB. Free memory was 68.8MB in the beginning and 67.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 275.74ms. Allocated memory is still 117.4MB. Free memory was 67.8MB in the beginning and 51.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 561.41ms. Allocated memory is still 117.4MB. Free memory was 50.6MB in the beginning and 64.7MB in the end (delta: -14.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 58.95ms. Allocated memory is still 117.4MB. Free memory was 64.7MB in the beginning and 59.2MB in the end (delta: 5.5MB). There was no memory consumed. 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: 100, independent: 91, independent conditional: 15, independent unconditional: 76, dependent: 9, dependent conditional: 7, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 93, independent: 91, independent conditional: 0, independent unconditional: 91, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 78, independent: 76, independent conditional: 0, independent unconditional: 76, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 78, independent: 75, independent conditional: 0, independent unconditional: 75, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 3, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 3, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 144, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 93, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 78, unknown conditional: 0, unknown unconditional: 78] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Independence queries for same thread: 7, Persistent sets #1 benchmarks: Persistent set computation time: 0.2s, Number of persistent set computation: 8, Number of trivial persistent sets: 6, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 100, independent: 91, independent conditional: 15, independent unconditional: 76, dependent: 9, dependent conditional: 7, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 93, independent: 91, independent conditional: 0, independent unconditional: 91, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 78, independent: 76, independent conditional: 0, independent unconditional: 76, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 78, independent: 75, independent conditional: 0, independent unconditional: 75, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 3, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 3, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 144, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 93, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 78, unknown conditional: 0, unknown unconditional: 78] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Independence queries for same thread: 7 - CounterExampleResult [Line: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [\at(arg, Pre)={0:0}, t=-1] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i