./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:24:06,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:24:07,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:24:07,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:24:07,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:24:07,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:24:07,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:24:07,115 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:24:07,115 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:24:07,119 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:24:07,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:24:07,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:24:07,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:24:07,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:24:07,122 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:24:07,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:24:07,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:24:07,123 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:24:07,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:24:07,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:24:07,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:24:07,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:24:07,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:24:07,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:24:07,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:24:07,125 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:24:07,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:24:07,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:24:07,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:24:07,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:24:07,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:24:07,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:24:07,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:24:07,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:24:07,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:24:07,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:24:07,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:24:07,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:24:07,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:24:07,128 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:24:07,128 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:24:07,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:24:07,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:24:07,129 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2024-06-27 17:24:07,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:24:07,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:24:07,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:24:07,336 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:24:07,336 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:24:07,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2024-06-27 17:24:08,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:24:08,584 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:24:08,586 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2024-06-27 17:24:08,602 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a1645f37/086f9df9c7804b3f8083e4d0c1b537c0/FLAG1c91223b3 [2024-06-27 17:24:08,612 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a1645f37/086f9df9c7804b3f8083e4d0c1b537c0 [2024-06-27 17:24:08,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:24:08,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:24:08,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:24:08,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:24:08,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:24:08,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:24:08" (1/1) ... [2024-06-27 17:24:08,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5828be0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:08, skipping insertion in model container [2024-06-27 17:24:08,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:24:08" (1/1) ... [2024-06-27 17:24:08,666 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:24:08,917 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2024-06-27 17:24:08,932 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:24:08,938 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:24:08,974 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2024-06-27 17:24:08,976 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:24:09,008 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:24:09,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09 WrapperNode [2024-06-27 17:24:09,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:24:09,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:24:09,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:24:09,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:24:09,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,048 INFO L138 Inliner]: procedures = 166, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-06-27 17:24:09,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:24:09,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:24:09,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:24:09,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:24:09,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,067 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 17:24:09,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:24:09,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:24:09,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:24:09,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:24:09,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (1/1) ... [2024-06-27 17:24:09,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:24:09,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:24:09,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 17:24:09,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 17:24:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-06-27 17:24:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-06-27 17:24:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:24:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:24:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:24:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:24:09,160 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:24:09,272 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:24:09,274 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:24:09,445 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:24:09,447 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:24:09,533 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:24:09,533 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-27 17:24:09,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:24:09 BoogieIcfgContainer [2024-06-27 17:24:09,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:24:09,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:24:09,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:24:09,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:24:09,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:24:08" (1/3) ... [2024-06-27 17:24:09,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbc5769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:24:09, skipping insertion in model container [2024-06-27 17:24:09,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:09" (2/3) ... [2024-06-27 17:24:09,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbc5769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:24:09, skipping insertion in model container [2024-06-27 17:24:09,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:24:09" (3/3) ... [2024-06-27 17:24:09,543 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-06-27 17:24:09,550 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:24:09,557 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:24:09,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 17:24:09,558 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:24:09,624 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:24:09,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 18 places, 20 transitions, 44 flow [2024-06-27 17:24:09,746 INFO L124 PetriNetUnfolderBase]: 5/22 cut-off events. [2024-06-27 17:24:09,749 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:24:09,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 5/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-06-27 17:24:09,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 18 places, 20 transitions, 44 flow [2024-06-27 17:24:09,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 20 transitions, 44 flow [2024-06-27 17:24:09,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:24:09,777 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@335a7123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:24:09,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-06-27 17:24:09,789 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:24:09,789 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2024-06-27 17:24:09,790 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:24:09,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:24:09,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-06-27 17:24:09,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 17:24:09,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:24:09,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1470737087, now seen corresponding path program 1 times [2024-06-27 17:24:09,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:24:09,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836232065] [2024-06-27 17:24:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:24:09,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:24:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 17:24:09,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 17:24:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 17:24:09,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 17:24:09,941 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 17:24:09,942 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-06-27 17:24:09,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-06-27 17:24:09,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-06-27 17:24:09,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:24:09,944 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-06-27 17:24:09,950 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-06-27 17:24:09,951 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-06-27 17:24:09,977 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:24:09,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 35 transitions, 80 flow [2024-06-27 17:24:09,989 INFO L124 PetriNetUnfolderBase]: 10/40 cut-off events. [2024-06-27 17:24:09,990 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 17:24:09,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 40 events. 10/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 31. Up to 3 conditions per place. [2024-06-27 17:24:09,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 35 transitions, 80 flow [2024-06-27 17:24:09,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 35 transitions, 80 flow [2024-06-27 17:24:09,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:24:09,993 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@335a7123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:24:09,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 17:24:09,997 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:24:09,998 INFO L124 PetriNetUnfolderBase]: 5/22 cut-off events. [2024-06-27 17:24:09,998 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 17:24:09,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:24:09,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:24:09,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-06-27 17:24:09,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:24:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash 395068404, now seen corresponding path program 1 times [2024-06-27 17:24:09,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:24:09,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850078912] [2024-06-27 17:24:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:24:09,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:24:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 17:24:10,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 17:24:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 17:24:10,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 17:24:10,042 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 17:24:10,043 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-06-27 17:24:10,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-06-27 17:24:10,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 17:24:10,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-06-27 17:24:10,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:24:10,047 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-06-27 17:24:10,050 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-06-27 17:24:10,050 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 17:24:10,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 05:24:10 BasicIcfg [2024-06-27 17:24:10,069 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 17:24:10,070 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 17:24:10,070 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 17:24:10,070 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 17:24:10,071 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:24:09" (3/4) ... [2024-06-27 17:24:10,072 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2024-06-27 17:24:10,111 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 17:24:10,111 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 17:24:10,112 INFO L158 Benchmark]: Toolchain (without parser) took 1497.29ms. Allocated memory is still 151.0MB. Free memory was 92.4MB in the beginning and 88.9MB in the end (delta: 3.5MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2024-06-27 17:24:10,113 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 115.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:24:10,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.21ms. Allocated memory is still 151.0MB. Free memory was 92.4MB in the beginning and 71.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 17:24:10,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.30ms. Allocated memory is still 151.0MB. Free memory was 71.4MB in the beginning and 69.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:24:10,115 INFO L158 Benchmark]: Boogie Preprocessor took 26.75ms. Allocated memory is still 151.0MB. Free memory was 69.8MB in the beginning and 67.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:24:10,115 INFO L158 Benchmark]: RCFGBuilder took 458.29ms. Allocated memory is still 151.0MB. Free memory was 67.8MB in the beginning and 49.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-27 17:24:10,116 INFO L158 Benchmark]: TraceAbstraction took 533.54ms. Allocated memory is still 151.0MB. Free memory was 48.9MB in the beginning and 91.0MB in the end (delta: -42.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:24:10,116 INFO L158 Benchmark]: Witness Printer took 41.00ms. Allocated memory is still 151.0MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:24:10,119 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 115.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.21ms. Allocated memory is still 151.0MB. Free memory was 92.4MB in the beginning and 71.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.30ms. Allocated memory is still 151.0MB. Free memory was 71.4MB in the beginning and 69.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.75ms. Allocated memory is still 151.0MB. Free memory was 69.8MB in the beginning and 67.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 458.29ms. Allocated memory is still 151.0MB. Free memory was 67.8MB in the beginning and 49.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 533.54ms. Allocated memory is still 151.0MB. Free memory was 48.9MB in the beginning and 91.0MB in the end (delta: -42.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 41.00ms. Allocated memory is still 151.0MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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; [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [\old(arg)={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 [\old(arg)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i