./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dfe144c0 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/pthread/reorder_2.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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-dfe144c-m [2024-07-20 20:11:57,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-07-20 20:11:57,085 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-07-20 20:11:57,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-07-20 20:11:57,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-07-20 20:11:57,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-07-20 20:11:57,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-07-20 20:11:57,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-07-20 20:11:57,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-07-20 20:11:57,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-07-20 20:11:57,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-07-20 20:11:57,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-07-20 20:11:57,119 INFO L153 SettingsManager]: * Use SBE=true [2024-07-20 20:11:57,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-07-20 20:11:57,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-07-20 20:11:57,120 INFO L153 SettingsManager]: * sizeof long=4 [2024-07-20 20:11:57,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-07-20 20:11:57,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-07-20 20:11:57,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-07-20 20:11:57,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-07-20 20:11:57,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-07-20 20:11:57,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-07-20 20:11:57,122 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-07-20 20:11:57,122 INFO L153 SettingsManager]: * sizeof long double=12 [2024-07-20 20:11:57,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-07-20 20:11:57,123 INFO L153 SettingsManager]: * Use constant arrays=true [2024-07-20 20:11:57,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-07-20 20:11:57,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-07-20 20:11:57,124 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-07-20 20:11:57,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-07-20 20:11:57,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-20 20:11:57,125 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-07-20 20:11:57,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-07-20 20:11:57,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-07-20 20:11:57,126 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-07-20 20:11:57,126 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-07-20 20:11:57,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-07-20 20:11:57,126 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-07-20 20:11:57,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-07-20 20:11:57,127 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-07-20 20:11:57,127 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-07-20 20:11:57,127 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-07-20 20:11:57,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 [2024-07-20 20:11:57,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-07-20 20:11:57,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-07-20 20:11:57,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-07-20 20:11:57,351 INFO L270 PluginConnector]: Initializing CDTParser... [2024-07-20 20:11:57,352 INFO L274 PluginConnector]: CDTParser initialized [2024-07-20 20:11:57,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread/reorder_2.i [2024-07-20 20:11:58,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-07-20 20:11:58,596 INFO L384 CDTParser]: Found 1 translation units. [2024-07-20 20:11:58,597 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_2.i [2024-07-20 20:11:58,618 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b31d55b13/d67b46801fde482a8c10e99ec3417778/FLAG4ab1a66b8 [2024-07-20 20:11:58,629 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b31d55b13/d67b46801fde482a8c10e99ec3417778 [2024-07-20 20:11:58,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-07-20 20:11:58,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-07-20 20:11:58,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-07-20 20:11:58,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-07-20 20:11:58,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-07-20 20:11:58,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:11:58" (1/1) ... [2024-07-20 20:11:58,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a1fff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:58, skipping insertion in model container [2024-07-20 20:11:58,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:11:58" (1/1) ... [2024-07-20 20:11:58,690 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-07-20 20:11:59,096 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/reorder_2.i[60219,60232] [2024-07-20 20:11:59,099 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-20 20:11:59,104 INFO L202 MainTranslator]: Completed pre-run [2024-07-20 20:11:59,192 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/reorder_2.i[60219,60232] [2024-07-20 20:11:59,194 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-20 20:11:59,262 INFO L206 MainTranslator]: Completed translation [2024-07-20 20:11:59,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59 WrapperNode [2024-07-20 20:11:59,262 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-07-20 20:11:59,263 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-07-20 20:11:59,263 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-07-20 20:11:59,263 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-07-20 20:11:59,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,320 INFO L138 Inliner]: procedures = 372, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 120 [2024-07-20 20:11:59,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-07-20 20:11:59,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-07-20 20:11:59,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-07-20 20:11:59,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-07-20 20:11:59,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-07-20 20:11:59,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-07-20 20:11:59,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-07-20 20:11:59,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-07-20 20:11:59,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (1/1) ... [2024-07-20 20:11:59,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-20 20:11:59,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:11:59,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-07-20 20:11:59,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-07-20 20:11:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-07-20 20:11:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-07-20 20:11:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-07-20 20:11:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-07-20 20:11:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-07-20 20:11:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-07-20 20:11:59,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-07-20 20:11:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-07-20 20:11:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-07-20 20:11:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-07-20 20:11:59,457 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-07-20 20:11:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-07-20 20:11:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-07-20 20:11:59,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-07-20 20:11:59,459 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-07-20 20:11:59,571 INFO L244 CfgBuilder]: Building ICFG [2024-07-20 20:11:59,573 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-07-20 20:11:59,705 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-07-20 20:11:59,705 INFO L293 CfgBuilder]: Performing block encoding [2024-07-20 20:11:59,808 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-07-20 20:11:59,808 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-07-20 20:11:59,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:11:59 BoogieIcfgContainer [2024-07-20 20:11:59,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-07-20 20:11:59,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-07-20 20:11:59,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-07-20 20:11:59,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-07-20 20:11:59,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 08:11:58" (1/3) ... [2024-07-20 20:11:59,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292adb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:11:59, skipping insertion in model container [2024-07-20 20:11:59,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:11:59" (2/3) ... [2024-07-20 20:11:59,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292adb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:11:59, skipping insertion in model container [2024-07-20 20:11:59,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:11:59" (3/3) ... [2024-07-20 20:11:59,814 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2024-07-20 20:11:59,820 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-07-20 20:11:59,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-07-20 20:11:59,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-07-20 20:11:59,827 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-07-20 20:11:59,855 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-07-20 20:11:59,882 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:11:59,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:11:59,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:11:59,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:11:59,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-07-20 20:11:59,910 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:11:59,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2024-07-20 20:11:59,922 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;@63298b17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:11:59,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-20 20:12:00,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-20 20:12:00,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:12:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash 650918286, now seen corresponding path program 1 times [2024-07-20 20:12:00,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:12:00,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233700894] [2024-07-20 20:12:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:12:00,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:12:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:12:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-20 20:12:00,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 20:12:00,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233700894] [2024-07-20 20:12:00,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233700894] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:12:00,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:12:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-07-20 20:12:00,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496936491] [2024-07-20 20:12:00,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:12:00,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-07-20 20:12:00,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 20:12:00,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-07-20 20:12:00,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-07-20 20:12:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:12:00,485 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:12:00,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:12:00,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:12:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-07-20 20:12:00,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-07-20 20:12:00,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-20 20:12:00,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:12:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1106094479, now seen corresponding path program 1 times [2024-07-20 20:12:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 20:12:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077199956] [2024-07-20 20:12:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:12:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 20:12:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:12:00,682 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:12:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:12:00,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-20 20:12:00,721 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:12:00,723 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-07-20 20:12:00,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-07-20 20:12:00,732 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-07-20 20:12:00,734 INFO L308 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was UNSAFE (1/2) [2024-07-20 20:12:00,737 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-07-20 20:12:00,737 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-07-20 20:12:00,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 08:12:00 BasicIcfg [2024-07-20 20:12:00,777 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-07-20 20:12:00,778 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-07-20 20:12:00,778 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-07-20 20:12:00,778 INFO L274 PluginConnector]: Witness Printer initialized [2024-07-20 20:12:00,779 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:11:59" (3/4) ... [2024-07-20 20:12:00,780 INFO L140 WitnessPrinter]: No result that supports witness generation found [2024-07-20 20:12:00,781 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-07-20 20:12:00,784 INFO L158 Benchmark]: Toolchain (without parser) took 2148.91ms. Allocated memory was 167.8MB in the beginning and 241.2MB in the end (delta: 73.4MB). Free memory was 91.7MB in the beginning and 162.1MB in the end (delta: -70.4MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2024-07-20 20:12:00,786 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-07-20 20:12:00,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 628.32ms. Allocated memory was 167.8MB in the beginning and 241.2MB in the end (delta: 73.4MB). Free memory was 91.6MB in the beginning and 187.6MB in the end (delta: -96.0MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2024-07-20 20:12:00,787 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.06ms. Allocated memory is still 241.2MB. Free memory was 187.6MB in the beginning and 185.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-07-20 20:12:00,787 INFO L158 Benchmark]: Boogie Preprocessor took 42.48ms. Allocated memory is still 241.2MB. Free memory was 185.7MB in the beginning and 183.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-07-20 20:12:00,790 INFO L158 Benchmark]: RCFGBuilder took 444.88ms. Allocated memory is still 241.2MB. Free memory was 183.6MB in the beginning and 148.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-07-20 20:12:00,791 INFO L158 Benchmark]: TraceAbstraction took 967.67ms. Allocated memory is still 241.2MB. Free memory was 146.9MB in the beginning and 162.1MB in the end (delta: -15.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-07-20 20:12:00,791 INFO L158 Benchmark]: Witness Printer took 3.14ms. Allocated memory is still 241.2MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-07-20 20:12:00,793 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 167.8MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 628.32ms. Allocated memory was 167.8MB in the beginning and 241.2MB in the end (delta: 73.4MB). Free memory was 91.6MB in the beginning and 187.6MB in the end (delta: -96.0MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.06ms. Allocated memory is still 241.2MB. Free memory was 187.6MB in the beginning and 185.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.48ms. Allocated memory is still 241.2MB. Free memory was 185.7MB in the beginning and 183.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.88ms. Allocated memory is still 241.2MB. Free memory was 183.6MB in the beginning and 148.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 967.67ms. Allocated memory is still 241.2MB. Free memory was 146.9MB in the beginning and 162.1MB in the end (delta: -15.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.14ms. Allocated memory is still 241.2MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 14, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 588, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 12, dependent conditional: 1, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 588, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 12, dependent conditional: 1, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 465, independent: 454, independent conditional: 0, independent unconditional: 454, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 465, independent: 448, independent conditional: 0, independent unconditional: 448, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 17, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 17, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 589, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 465, unknown conditional: 0, unknown unconditional: 465] , Statistics on independence cache: Total cache size (in pairs): 465, Positive cache size: 454, Positive conditional cache size: 0, Positive unconditional cache size: 454, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 1, Maximal queried relation: 1, Independence queries for same thread: 13 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 50, Number of trivial persistent sets: 32, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 492, independent: 481, independent conditional: 0, independent unconditional: 481, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 14, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 588, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 12, dependent conditional: 1, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 588, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 12, dependent conditional: 1, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 465, independent: 454, independent conditional: 0, independent unconditional: 454, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 465, independent: 448, independent conditional: 0, independent unconditional: 448, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 17, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 17, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 589, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 465, unknown conditional: 0, unknown unconditional: 465] , Statistics on independence cache: Total cache size (in pairs): 465, Positive cache size: 454, Positive conditional cache size: 0, Positive unconditional cache size: 454, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 1, Maximal queried relation: 1, Independence queries for same thread: 13 - UnprovableResult [Line: 1307]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of sscanf at line 1253. Possible FailurePath: [L1238] 0 static int iSet = 2; [L1239] 0 static int iCheck = 2; [L1240] 0 static int a = 0; [L1241] 0 static int b = 0; [L1247] 0 int i, err; [L1248] COND TRUE 0 argc != 1 [L1249] COND FALSE 0 !(argc != 3) [L1257] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1260] 0 pthread_t setPool[iSet]; [L1261] 0 pthread_t checkPool[iCheck]; [L1262] 0 i = 0 VAL [\old(argc)=3, \old(argv)={50:52}, a=0, argc=3, b=0, checkPool={5:0}, i=0, iCheck=2, iSet=1, setPool={6:0}] [L1262] COND TRUE 0 i < iSet [L1263] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \old(argv)={50:52}, \old(param)={0:0}, a=0, argc=3, b=0, checkPool={5:0}, i=0, iCheck=2, iSet=1, setPool={6:0}] [L1291] 1 a = 1 VAL [\old(param)={0:0}, a=1, b=0, iCheck=2, iSet=1, param={0:0}] [L1263] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) [L1263] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1262] 0 i++ VAL [\old(argc)=3, \old(argv)={50:52}, \old(param)={0:0}, a=1, argc=3, b=0, checkPool={5:0}, err=0, i=1, iCheck=2, iSet=1, param={0:0}, setPool={6:0}] [L1262] COND FALSE 0 !(i < iSet) [L1268] 0 i = 0 VAL [\old(argc)=3, \old(argv)={50:52}, \old(param)={0:0}, a=1, argc=3, b=0, checkPool={5:0}, err=0, i=0, iCheck=2, iSet=1, param={0:0}, setPool={6:0}] [L1268] COND TRUE 0 i < iCheck [L1269-L1270] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, \old(argv)={50:52}, \old(param)={0:0}, \old(param)={0:0}, a=1, argc=3, b=0, checkPool={5:0}, err=0, i=0, iCheck=2, iSet=1, param={0:0}, setPool={6:0}] [L1300] 2 int la = a; VAL [\old(param)={0:0}, \old(param)={0:0}, a=1, b=0, iCheck=2, iSet=1, la=1, param={0:0}, param={0:0}] [L1303] 2 int lb = b; VAL [\old(param)={0:0}, \old(param)={0:0}, a=1, b=0, iCheck=2, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] [L1305] COND TRUE 2 ! ((la == 0 && lb == 0) || (la == 1 && lb == -1)) [L1307] 2 reach_error() VAL [\old(param)={0:0}, \old(param)={0:0}, a=1, b=0, iCheck=2, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: checkThreadThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, 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: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 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 could not prove your program: unable to determine feasibility of some traces [2024-07-20 20:12:00,817 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 [2024-07-20 20:12:01,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/pthread/reorder_2.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-dfe144c-m [2024-07-20 20:12:02,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-07-20 20:12:03,029 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2024-07-20 20:12:03,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-07-20 20:12:03,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-07-20 20:12:03,066 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-07-20 20:12:03,067 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-07-20 20:12:03,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-07-20 20:12:03,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-07-20 20:12:03,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-07-20 20:12:03,070 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-07-20 20:12:03,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-07-20 20:12:03,071 INFO L153 SettingsManager]: * Use SBE=true [2024-07-20 20:12:03,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-07-20 20:12:03,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-07-20 20:12:03,074 INFO L153 SettingsManager]: * sizeof long=4 [2024-07-20 20:12:03,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-07-20 20:12:03,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-07-20 20:12:03,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-07-20 20:12:03,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-07-20 20:12:03,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-07-20 20:12:03,076 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-07-20 20:12:03,076 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-07-20 20:12:03,076 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-07-20 20:12:03,077 INFO L153 SettingsManager]: * sizeof long double=12 [2024-07-20 20:12:03,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-07-20 20:12:03,077 INFO L153 SettingsManager]: * Use constant arrays=true [2024-07-20 20:12:03,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-07-20 20:12:03,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-07-20 20:12:03,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-07-20 20:12:03,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-07-20 20:12:03,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-20 20:12:03,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-07-20 20:12:03,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-07-20 20:12:03,080 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-07-20 20:12:03,080 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-07-20 20:12:03,080 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-07-20 20:12:03,080 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-07-20 20:12:03,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-07-20 20:12:03,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-07-20 20:12:03,081 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-07-20 20:12:03,081 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-07-20 20:12:03,082 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-07-20 20:12:03,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-07-20 20:12:03,082 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 [2024-07-20 20:12:03,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-07-20 20:12:03,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-07-20 20:12:03,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-07-20 20:12:03,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-07-20 20:12:03,396 INFO L274 PluginConnector]: CDTParser initialized [2024-07-20 20:12:03,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread/reorder_2.i [2024-07-20 20:12:04,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-07-20 20:12:04,793 INFO L384 CDTParser]: Found 1 translation units. [2024-07-20 20:12:04,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_2.i [2024-07-20 20:12:04,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/59ee40f27/b0e9af77c7614d3aa48215127eaa070f/FLAGa374ff612 [2024-07-20 20:12:04,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/59ee40f27/b0e9af77c7614d3aa48215127eaa070f [2024-07-20 20:12:04,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-07-20 20:12:04,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-07-20 20:12:04,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-07-20 20:12:04,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-07-20 20:12:04,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-07-20 20:12:04,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:12:04" (1/1) ... [2024-07-20 20:12:04,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108e26eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:04, skipping insertion in model container [2024-07-20 20:12:04,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:12:04" (1/1) ... [2024-07-20 20:12:04,891 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-07-20 20:12:05,374 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/reorder_2.i[60219,60232] [2024-07-20 20:12:05,378 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-20 20:12:05,389 INFO L202 MainTranslator]: Completed pre-run [2024-07-20 20:12:05,447 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/reorder_2.i[60219,60232] [2024-07-20 20:12:05,447 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-20 20:12:05,539 INFO L206 MainTranslator]: Completed translation [2024-07-20 20:12:05,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05 WrapperNode [2024-07-20 20:12:05,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-07-20 20:12:05,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-07-20 20:12:05,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-07-20 20:12:05,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-07-20 20:12:05,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,606 INFO L138 Inliner]: procedures = 375, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 119 [2024-07-20 20:12:05,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-07-20 20:12:05,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-07-20 20:12:05,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-07-20 20:12:05,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-07-20 20:12:05,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,642 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-07-20 20:12:05,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-07-20 20:12:05,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-07-20 20:12:05,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-07-20 20:12:05,680 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (1/1) ... [2024-07-20 20:12:05,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-20 20:12:05,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:12:05,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-07-20 20:12:05,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-07-20 20:12:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-07-20 20:12:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-07-20 20:12:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-07-20 20:12:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-07-20 20:12:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-07-20 20:12:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-07-20 20:12:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-07-20 20:12:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-07-20 20:12:05,752 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-07-20 20:12:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-07-20 20:12:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-07-20 20:12:05,752 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-07-20 20:12:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-07-20 20:12:05,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-07-20 20:12:05,753 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-07-20 20:12:05,894 INFO L244 CfgBuilder]: Building ICFG [2024-07-20 20:12:05,895 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-07-20 20:12:06,124 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-07-20 20:12:06,124 INFO L293 CfgBuilder]: Performing block encoding [2024-07-20 20:12:06,328 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-07-20 20:12:06,328 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-07-20 20:12:06,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:12:06 BoogieIcfgContainer [2024-07-20 20:12:06,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-07-20 20:12:06,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-07-20 20:12:06,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-07-20 20:12:06,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-07-20 20:12:06,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 08:12:04" (1/3) ... [2024-07-20 20:12:06,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7614204f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:12:06, skipping insertion in model container [2024-07-20 20:12:06,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:12:05" (2/3) ... [2024-07-20 20:12:06,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7614204f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:12:06, skipping insertion in model container [2024-07-20 20:12:06,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:12:06" (3/3) ... [2024-07-20 20:12:06,337 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2024-07-20 20:12:06,343 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-07-20 20:12:06,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-07-20 20:12:06,350 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-07-20 20:12:06,350 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-07-20 20:12:06,382 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-07-20 20:12:06,415 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:12:06,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 20:12:06,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 20:12:06,416 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 20:12:06,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-07-20 20:12:06,507 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 20:12:06,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2024-07-20 20:12:06,522 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;@53e54a02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 20:12:06,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-20 20:12:06,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-20 20:12:06,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:12:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2016282738, now seen corresponding path program 1 times [2024-07-20 20:12:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-07-20 20:12:06,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050835939] [2024-07-20 20:12:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:12:06,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-07-20 20:12:06,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-07-20 20:12:06,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-07-20 20:12:06,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-07-20 20:12:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 20:12:06,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2024-07-20 20:12:06,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-20 20:12:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-20 20:12:06,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-07-20 20:12:06,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-07-20 20:12:06,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050835939] [2024-07-20 20:12:06,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050835939] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 20:12:06,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 20:12:06,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-07-20 20:12:06,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472576598] [2024-07-20 20:12:06,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 20:12:06,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-07-20 20:12:06,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-07-20 20:12:06,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-07-20 20:12:06,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-07-20 20:12:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:12:06,915 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 20:12:06,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 20:12:06,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 20:12:07,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-07-20 20:12:07,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-07-20 20:12:07,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-07-20 20:12:07,291 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-20 20:12:07,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 20:12:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 432928719, now seen corresponding path program 1 times [2024-07-20 20:12:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-07-20 20:12:07,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652831220] [2024-07-20 20:12:07,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 20:12:07,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-07-20 20:12:07,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-07-20 20:12:07,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-07-20 20:12:07,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-07-20 20:12:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:12:07,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-20 20:12:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-20 20:12:07,419 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-07-20 20:12:07,419 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-20 20:12:07,420 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-07-20 20:12:07,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-07-20 20:12:07,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-07-20 20:12:07,628 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-07-20 20:12:07,629 INFO L308 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was UNSAFE (1/2) [2024-07-20 20:12:07,631 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-07-20 20:12:07,631 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-07-20 20:12:07,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 08:12:07 BasicIcfg [2024-07-20 20:12:07,725 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-07-20 20:12:07,726 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-07-20 20:12:07,726 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-07-20 20:12:07,726 INFO L274 PluginConnector]: Witness Printer initialized [2024-07-20 20:12:07,726 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:12:06" (3/4) ... [2024-07-20 20:12:07,728 INFO L140 WitnessPrinter]: No result that supports witness generation found [2024-07-20 20:12:07,729 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-07-20 20:12:07,729 INFO L158 Benchmark]: Toolchain (without parser) took 2891.86ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 41.7MB in the beginning and 76.0MB in the end (delta: -34.3MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2024-07-20 20:12:07,729 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 33.1MB in the beginning and 33.0MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-07-20 20:12:07,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.44ms. Allocated memory is still 69.2MB. Free memory was 41.5MB in the beginning and 34.9MB in the end (delta: 6.6MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2024-07-20 20:12:07,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.65ms. Allocated memory is still 69.2MB. Free memory was 34.5MB in the beginning and 31.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-07-20 20:12:07,733 INFO L158 Benchmark]: Boogie Preprocessor took 72.16ms. Allocated memory is still 69.2MB. Free memory was 31.8MB in the beginning and 29.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-07-20 20:12:07,735 INFO L158 Benchmark]: RCFGBuilder took 649.51ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 29.7MB in the beginning and 76.7MB in the end (delta: -47.0MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2024-07-20 20:12:07,735 INFO L158 Benchmark]: TraceAbstraction took 1394.76ms. Allocated memory is still 109.1MB. Free memory was 76.0MB in the beginning and 76.0MB in the end (delta: 36.4kB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2024-07-20 20:12:07,735 INFO L158 Benchmark]: Witness Printer took 3.07ms. Allocated memory is still 109.1MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-07-20 20:12:07,736 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 33.1MB in the beginning and 33.0MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 702.44ms. Allocated memory is still 69.2MB. Free memory was 41.5MB in the beginning and 34.9MB in the end (delta: 6.6MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.65ms. Allocated memory is still 69.2MB. Free memory was 34.5MB in the beginning and 31.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.16ms. Allocated memory is still 69.2MB. Free memory was 31.8MB in the beginning and 29.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 649.51ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 29.7MB in the beginning and 76.7MB in the end (delta: -47.0MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1394.76ms. Allocated memory is still 109.1MB. Free memory was 76.0MB in the beginning and 76.0MB in the end (delta: 36.4kB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. * Witness Printer took 3.07ms. Allocated memory is still 109.1MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 14, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 588, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 12, dependent conditional: 1, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 588, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 12, dependent conditional: 1, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 465, independent: 454, independent conditional: 0, independent unconditional: 454, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 465, independent: 448, independent conditional: 0, independent unconditional: 448, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 17, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 17, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 58, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 589, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 465, unknown conditional: 0, unknown unconditional: 465] , Statistics on independence cache: Total cache size (in pairs): 465, Positive cache size: 454, Positive conditional cache size: 0, Positive unconditional cache size: 454, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 1, Maximal queried relation: 1, Independence queries for same thread: 13 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 50, Number of trivial persistent sets: 32, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 492, independent: 481, independent conditional: 0, independent unconditional: 481, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 14, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 588, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 12, dependent conditional: 1, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 588, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 12, dependent conditional: 1, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 589, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 465, independent: 454, independent conditional: 0, independent unconditional: 454, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 465, independent: 448, independent conditional: 0, independent unconditional: 448, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 17, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 17, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 58, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 589, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 465, unknown conditional: 0, unknown unconditional: 465] , Statistics on independence cache: Total cache size (in pairs): 465, Positive cache size: 454, Positive conditional cache size: 0, Positive unconditional cache size: 454, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 1, Maximal queried relation: 1, Independence queries for same thread: 13 - UnprovableResult [Line: 1307]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of sscanf at line 1253. Possible FailurePath: [L1238] 0 static int iSet = 2; [L1239] 0 static int iCheck = 2; [L1240] 0 static int a = 0; [L1241] 0 static int b = 0; [L1247] 0 int i, err; [L1248] COND TRUE 0 argc != 1 [L1249] COND FALSE 0 !(argc != 3) [L1257] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1260] 0 pthread_t setPool[iSet]; [L1261] 0 pthread_t checkPool[iCheck]; [L1262] 0 i = 0 VAL [\old(argc)=3, \old(argv)={7:6}, a=0, argc=3, b=0, checkPool={3:0}, i=0, iCheck=65536, iSet=1, setPool={5:0}] [L1262] COND TRUE 0 i < iSet [L1263] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \old(argv)={7:6}, \old(param)={0:0}, a=0, argc=3, b=0, checkPool={3:0}, i=0, iCheck=65536, iSet=1, setPool={5:0}] [L1291] 1 a = 1 VAL [\old(param)={0:0}, a=1, b=0, iCheck=65536, iSet=1, param={0:0}] [L1263] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) [L1263] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1262] 0 i++ VAL [\old(argc)=3, \old(argv)={7:6}, \old(param)={0:0}, a=1, argc=3, b=0, checkPool={3:0}, err=0, i=1, iCheck=65536, iSet=1, param={0:0}, setPool={5:0}] [L1262] COND FALSE 0 !(i < iSet) [L1268] 0 i = 0 VAL [\old(argc)=3, \old(argv)={7:6}, \old(param)={0:0}, a=1, argc=3, b=0, checkPool={3:0}, err=0, i=0, iCheck=65536, iSet=1, param={0:0}, setPool={5:0}] [L1268] COND TRUE 0 i < iCheck [L1269-L1270] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, \old(argv)={7:6}, \old(param)={0:0}, \old(param)={0:0}, a=1, argc=3, b=0, checkPool={3:0}, err=0, i=0, iCheck=65536, iSet=1, param={0:0}, setPool={5:0}] [L1300] 2 int la = a; VAL [\old(param)={0:0}, \old(param)={0:0}, a=1, b=0, iCheck=65536, iSet=1, la=1, param={0:0}, param={0:0}] [L1303] 2 int lb = b; VAL [\old(param)={0:0}, \old(param)={0:0}, a=1, b=0, iCheck=65536, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] [L1305] COND TRUE 2 ! ((la == 0 && lb == 0) || (la == 1 && lb == -1)) [L1307] 2 reach_error() VAL [\old(param)={0:0}, \old(param)={0:0}, a=1, b=0, iCheck=65536, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: checkThreadThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, 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: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 2 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 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 could not prove your program: unable to determine feasibility of some traces [2024-07-20 20:12:07,763 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 [2024-07-20 20:12:07,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample