./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/reorder_2.i --full-output --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking RANDOM --traceabstraction.probability.for.random.criterion 50 --traceabstraction.seed.for.random.criterion 213 -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b86fb0b7 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 --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking RANDOM --traceabstraction.probability.for.random.criterion 50 --traceabstraction.seed.for.random.criterion 213 -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.conditional-comm-b86fb0b-m [2024-10-18 03:29:50,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-18 03:29:50,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-18 03:29:50,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-18 03:29:50,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-18 03:29:50,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-18 03:29:50,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-18 03:29:50,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-18 03:29:50,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-18 03:29:50,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-18 03:29:50,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-18 03:29:50,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-18 03:29:50,700 INFO L153 SettingsManager]: * Use SBE=true [2024-10-18 03:29:50,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-18 03:29:50,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-18 03:29:50,703 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-18 03:29:50,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-18 03:29:50,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-18 03:29:50,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-18 03:29:50,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-18 03:29:50,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-18 03:29:50,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-18 03:29:50,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-18 03:29:50,709 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-18 03:29:50,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-18 03:29:50,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-18 03:29:50,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-18 03:29:50,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-18 03:29:50,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-18 03:29:50,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-18 03:29:50,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-18 03:29:50,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-18 03:29:50,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-18 03:29:50,711 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-18 03:29:50,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-18 03:29:50,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-18 03:29:50,712 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-18 03:29:50,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-18 03:29:50,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-18 03:29:50,714 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-18 03:29:50,714 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-18 03:29:50,715 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> COUNTEREXAMPLE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> RANDOM Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Probability for random criterion as percentage -> 50 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Seed for random criterion -> 213 [2024-10-18 03:29:50,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-18 03:29:51,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-18 03:29:51,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-18 03:29:51,014 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-18 03:29:51,014 INFO L274 PluginConnector]: CDTParser initialized [2024-10-18 03:29:51,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread/reorder_2.i [2024-10-18 03:29:52,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-18 03:29:52,803 INFO L384 CDTParser]: Found 1 translation units. [2024-10-18 03:29:52,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_2.i [2024-10-18 03:29:52,824 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/bfc2e5b92/3f658598de164558b8e5627c95baf72f/FLAGbffe40c77 [2024-10-18 03:29:52,838 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/bfc2e5b92/3f658598de164558b8e5627c95baf72f [2024-10-18 03:29:52,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-18 03:29:52,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-18 03:29:52,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-18 03:29:52,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-18 03:29:52,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-18 03:29:52,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.10 03:29:52" (1/1) ... [2024-10-18 03:29:52,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc2ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:52, skipping insertion in model container [2024-10-18 03:29:52,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.10 03:29:52" (1/1) ... [2024-10-18 03:29:52,905 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-18 03:29:53,399 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] [2024-10-18 03:29:53,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-18 03:29:53,411 INFO L200 MainTranslator]: Completed pre-run [2024-10-18 03:29:53,495 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] [2024-10-18 03:29:53,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-18 03:29:53,573 INFO L204 MainTranslator]: Completed translation [2024-10-18 03:29:53,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53 WrapperNode [2024-10-18 03:29:53,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-18 03:29:53,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-18 03:29:53,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-18 03:29:53,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-18 03:29:53,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,606 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,639 INFO L138 Inliner]: procedures = 372, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 120 [2024-10-18 03:29:53,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-18 03:29:53,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-18 03:29:53,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-18 03:29:53,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-18 03:29:53,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-18 03:29:53,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-18 03:29:53,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-18 03:29:53,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-18 03:29:53,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (1/1) ... [2024-10-18 03:29:53,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-18 03:29:53,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 03:29:53,735 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) [2024-10-18 03:29:53,738 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 [2024-10-18 03:29:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-18 03:29:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-18 03:29:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-18 03:29:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-18 03:29:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-18 03:29:53,786 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-10-18 03:29:53,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-10-18 03:29:53,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-18 03:29:53,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-18 03:29:53,786 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-10-18 03:29:53,787 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-10-18 03:29:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-18 03:29:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-18 03:29:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-18 03:29:53,790 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-18 03:29:53,918 INFO L238 CfgBuilder]: Building ICFG [2024-10-18 03:29:53,920 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-18 03:29:54,145 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-18 03:29:54,145 INFO L287 CfgBuilder]: Performing block encoding [2024-10-18 03:29:54,307 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-18 03:29:54,308 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-18 03:29:54,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.10 03:29:54 BoogieIcfgContainer [2024-10-18 03:29:54,309 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-18 03:29:54,312 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-18 03:29:54,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-18 03:29:54,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-18 03:29:54,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.10 03:29:52" (1/3) ... [2024-10-18 03:29:54,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dc3cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.10 03:29:54, skipping insertion in model container [2024-10-18 03:29:54,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:29:53" (2/3) ... [2024-10-18 03:29:54,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dc3cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.10 03:29:54, skipping insertion in model container [2024-10-18 03:29:54,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.10 03:29:54" (3/3) ... [2024-10-18 03:29:54,320 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2024-10-18 03:29:54,359 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-18 03:29:54,359 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-18 03:29:54,359 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-18 03:29:54,400 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-18 03:29:54,449 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 03:29:54,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 03:29:54,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 03:29:54,452 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) [2024-10-18 03:29:54,453 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 [2024-10-18 03:29:54,553 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 03:29:54,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 03:29:54,577 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2024-10-18 03:29:54,585 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@378c7120, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=RANDOM, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=50, mConComCheckerRandomSeed=213, mConComCheckerConditionCriterion=false [2024-10-18 03:29:54,585 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 03:29:55,045 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 03:29:55,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 03:29:55,048 INFO L85 PathProgramCache]: Analyzing trace with hash 650918286, now seen corresponding path program 1 times [2024-10-18 03:29:55,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 03:29:55,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026824790] [2024-10-18 03:29:55,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 03:29:55,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 03:29:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 03:29:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 03:29:55,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 03:29:55,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026824790] [2024-10-18 03:29:55,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026824790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 03:29:55,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 03:29:55,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-18 03:29:55,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044185770] [2024-10-18 03:29:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 03:29:55,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-18 03:29:55,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 03:29:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-18 03:29:55,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-18 03:29:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 03:29:55,580 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 03:29:55,581 INFO L472 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) [2024-10-18 03:29:55,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 03:29:56,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-18 03:29:56,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-18 03:29:56,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 03:29:56,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 03:29:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1106094479, now seen corresponding path program 1 times [2024-10-18 03:29:56,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 03:29:56,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254797473] [2024-10-18 03:29:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 03:29:56,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 03:29:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 03:29:56,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 03:29:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 03:29:56,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-18 03:29:56,177 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-18 03:29:56,180 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-18 03:29:56,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-18 03:29:56,196 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-18 03:29:56,198 INFO L312 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was UNSAFE (1/2) [2024-10-18 03:29:56,249 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-18 03:29:56,250 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-18 03:29:56,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.10 03:29:56 BasicIcfg [2024-10-18 03:29:56,256 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-18 03:29:56,257 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-18 03:29:56,257 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-18 03:29:56,257 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-18 03:29:56,258 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.10 03:29:54" (3/4) ... [2024-10-18 03:29:56,260 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-18 03:29:56,262 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-18 03:29:56,264 INFO L158 Benchmark]: Toolchain (without parser) took 3420.59ms. Allocated memory was 157.3MB in the beginning and 207.6MB in the end (delta: 50.3MB). Free memory was 85.1MB in the beginning and 122.4MB in the end (delta: -37.3MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2024-10-18 03:29:56,264 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 157.3MB. Free memory is still 114.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-18 03:29:56,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 728.45ms. Allocated memory is still 157.3MB. Free memory was 84.8MB in the beginning and 92.3MB in the end (delta: -7.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2024-10-18 03:29:56,265 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.05ms. Allocated memory is still 157.3MB. Free memory was 92.3MB in the beginning and 89.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-18 03:29:56,265 INFO L158 Benchmark]: Boogie Preprocessor took 43.33ms. Allocated memory is still 157.3MB. Free memory was 89.6MB in the beginning and 88.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-18 03:29:56,266 INFO L158 Benchmark]: RCFGBuilder took 622.41ms. Allocated memory is still 157.3MB. Free memory was 88.2MB in the beginning and 53.3MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-10-18 03:29:56,266 INFO L158 Benchmark]: TraceAbstraction took 1944.59ms. Allocated memory was 157.3MB in the beginning and 207.6MB in the end (delta: 50.3MB). Free memory was 51.8MB in the beginning and 122.4MB in the end (delta: -70.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-18 03:29:56,266 INFO L158 Benchmark]: Witness Printer took 5.49ms. Allocated memory is still 207.6MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-18 03:29:56,272 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 157.3MB. Free memory is still 114.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 728.45ms. Allocated memory is still 157.3MB. Free memory was 84.8MB in the beginning and 92.3MB in the end (delta: -7.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.05ms. Allocated memory is still 157.3MB. Free memory was 92.3MB in the beginning and 89.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.33ms. Allocated memory is still 157.3MB. Free memory was 89.6MB in the beginning and 88.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 622.41ms. Allocated memory is still 157.3MB. Free memory was 88.2MB in the beginning and 53.3MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1944.59ms. Allocated memory was 157.3MB in the beginning and 207.6MB in the end (delta: 50.3MB). Free memory was 51.8MB in the beginning and 122.4MB in the end (delta: -70.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.49ms. Allocated memory is still 207.6MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 3, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, 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: 702, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 495, dependent conditional: 0, dependent unconditional: 495, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 601, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 14, dependent conditional: 0, dependent unconditional: 14, 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: 98, Maximal queried relation: 1, ConditionTransformingIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 3, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, 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: 702, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 495, dependent conditional: 0, dependent unconditional: 495, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 601, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 14, dependent conditional: 0, dependent unconditional: 14, 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: 98 ], Independence queries for same thread: 13, Persistent sets #1 benchmarks: Persistent set computation time: 0.8s, 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 3, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, 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: 702, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 495, dependent conditional: 0, dependent unconditional: 495, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 601, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 14, dependent conditional: 0, dependent unconditional: 14, 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: 98, Maximal queried relation: 1, ConditionTransformingIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 3, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, 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: 702, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 495, dependent conditional: 0, dependent unconditional: 495, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 601, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 14, dependent conditional: 0, dependent unconditional: 14, 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: 98 ], 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: 1.7s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.9s, 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, ConComCheckerStatistics: ConditionalCommutativityOverallTime: 0.0s, ConditionalCommutativityCheckTime: 0.0s, ConditionalCommutativityIAIntegrations: 0, ConditionalCommutativityDFSRestarts: 0, ConditionalCommutativityCommutingCounterexamples: 0, ConditionalCommutativityConditionCalculations: 0, ConditionalCommutativityTraceChecks: 0, ConditionalCommutativityImperfectProofs: 0 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-18 03:29:56,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2024-10-18 03:29:56,502 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 --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking RANDOM --traceabstraction.probability.for.random.criterion 50 --traceabstraction.seed.for.random.criterion 213 -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.conditional-comm-b86fb0b-m [2024-10-18 03:29:58,652 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-18 03:29:58,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2024-10-18 03:29:58,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-18 03:29:58,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-18 03:29:58,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-18 03:29:58,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-18 03:29:58,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-18 03:29:58,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-18 03:29:58,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-18 03:29:58,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-18 03:29:58,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-18 03:29:58,758 INFO L153 SettingsManager]: * Use SBE=true [2024-10-18 03:29:58,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-18 03:29:58,761 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-18 03:29:58,762 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-18 03:29:58,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-18 03:29:58,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-18 03:29:58,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-18 03:29:58,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-18 03:29:58,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-18 03:29:58,763 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-18 03:29:58,764 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-18 03:29:58,764 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-18 03:29:58,764 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-18 03:29:58,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-18 03:29:58,765 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-18 03:29:58,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-18 03:29:58,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-18 03:29:58,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-18 03:29:58,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-18 03:29:58,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-18 03:29:58,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-18 03:29:58,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-18 03:29:58,771 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-18 03:29:58,772 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-18 03:29:58,772 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-18 03:29:58,772 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-18 03:29:58,772 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-18 03:29:58,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-18 03:29:58,772 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-18 03:29:58,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-18 03:29:58,774 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-18 03:29:58,774 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> COUNTEREXAMPLE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> RANDOM Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Probability for random criterion as percentage -> 50 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Seed for random criterion -> 213 [2024-10-18 03:29:59,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-18 03:29:59,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-18 03:29:59,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-18 03:29:59,112 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-18 03:29:59,113 INFO L274 PluginConnector]: CDTParser initialized [2024-10-18 03:29:59,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread/reorder_2.i [2024-10-18 03:30:00,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-18 03:30:00,971 INFO L384 CDTParser]: Found 1 translation units. [2024-10-18 03:30:00,971 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_2.i [2024-10-18 03:30:00,997 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/cd6232592/ecb3cdc8d37143debc1917ed622aba5f/FLAG240b94284 [2024-10-18 03:30:01,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/cd6232592/ecb3cdc8d37143debc1917ed622aba5f [2024-10-18 03:30:01,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-18 03:30:01,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-18 03:30:01,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-18 03:30:01,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-18 03:30:01,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-18 03:30:01,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.10 03:30:01" (1/1) ... [2024-10-18 03:30:01,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf933c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:01, skipping insertion in model container [2024-10-18 03:30:01,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.10 03:30:01" (1/1) ... [2024-10-18 03:30:01,287 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-18 03:30:01,954 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] [2024-10-18 03:30:01,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-18 03:30:01,972 INFO L200 MainTranslator]: Completed pre-run [2024-10-18 03:30:02,040 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] [2024-10-18 03:30:02,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-18 03:30:02,143 INFO L204 MainTranslator]: Completed translation [2024-10-18 03:30:02,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02 WrapperNode [2024-10-18 03:30:02,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-18 03:30:02,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-18 03:30:02,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-18 03:30:02,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-18 03:30:02,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,218 INFO L138 Inliner]: procedures = 375, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 119 [2024-10-18 03:30:02,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-18 03:30:02,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-18 03:30:02,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-18 03:30:02,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-18 03:30:02,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-18 03:30:02,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-18 03:30:02,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-18 03:30:02,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-18 03:30:02,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (1/1) ... [2024-10-18 03:30:02,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-18 03:30:02,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 03:30:02,315 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) [2024-10-18 03:30:02,318 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 [2024-10-18 03:30:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-10-18 03:30:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-18 03:30:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-18 03:30:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-18 03:30:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-10-18 03:30:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-10-18 03:30:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-18 03:30:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-10-18 03:30:02,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-10-18 03:30:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-18 03:30:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-10-18 03:30:02,361 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-10-18 03:30:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-18 03:30:02,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-18 03:30:02,363 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-18 03:30:02,508 INFO L238 CfgBuilder]: Building ICFG [2024-10-18 03:30:02,509 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-18 03:30:02,740 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-18 03:30:02,741 INFO L287 CfgBuilder]: Performing block encoding [2024-10-18 03:30:02,957 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-18 03:30:02,958 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-18 03:30:02,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.10 03:30:02 BoogieIcfgContainer [2024-10-18 03:30:02,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-18 03:30:02,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-18 03:30:02,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-18 03:30:02,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-18 03:30:02,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.10 03:30:01" (1/3) ... [2024-10-18 03:30:02,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4355d98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.10 03:30:02, skipping insertion in model container [2024-10-18 03:30:02,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 03:30:02" (2/3) ... [2024-10-18 03:30:02,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4355d98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.10 03:30:02, skipping insertion in model container [2024-10-18 03:30:02,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.10 03:30:02" (3/3) ... [2024-10-18 03:30:02,969 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2024-10-18 03:30:02,987 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-18 03:30:02,987 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-18 03:30:02,987 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-18 03:30:03,028 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-18 03:30:03,077 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 03:30:03,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 03:30:03,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 03:30:03,080 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) [2024-10-18 03:30:03,081 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 [2024-10-18 03:30:03,188 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 03:30:03,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 03:30:03,220 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2024-10-18 03:30:03,231 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ac61d3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=RANDOM, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=50, mConComCheckerRandomSeed=213, mConComCheckerConditionCriterion=false [2024-10-18 03:30:03,231 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 03:30:03,725 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 03:30:03,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 03:30:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2016282738, now seen corresponding path program 1 times [2024-10-18 03:30:03,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-18 03:30:03,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809636929] [2024-10-18 03:30:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 03:30:03,747 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 [2024-10-18 03:30:03,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-18 03:30:03,751 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) [2024-10-18 03:30:03,752 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 [2024-10-18 03:30:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 03:30:03,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-18 03:30:03,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 03:30:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 03:30:04,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-18 03:30:04,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-18 03:30:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809636929] [2024-10-18 03:30:04,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809636929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 03:30:04,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 03:30:04,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-18 03:30:04,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037546594] [2024-10-18 03:30:04,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 03:30:04,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-18 03:30:04,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-18 03:30:04,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-18 03:30:04,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-18 03:30:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 03:30:04,038 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 03:30:04,039 INFO L472 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) [2024-10-18 03:30:04,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 03:30:04,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-18 03:30:04,494 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 [2024-10-18 03:30:04,691 WARN L453 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 [2024-10-18 03:30:04,692 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 03:30:04,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 03:30:04,692 INFO L85 PathProgramCache]: Analyzing trace with hash 432928719, now seen corresponding path program 1 times [2024-10-18 03:30:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-18 03:30:04,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824021390] [2024-10-18 03:30:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 03:30:04,693 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 [2024-10-18 03:30:04,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-10-18 03:30:04,697 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) [2024-10-18 03:30:04,699 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 [2024-10-18 03:30:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 03:30:04,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 03:30:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 03:30:04,856 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-10-18 03:30:04,857 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-18 03:30:04,859 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-18 03:30:04,867 INFO L552 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)] Ended with exit code 0 [2024-10-18 03:30:05,064 WARN L453 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 [2024-10-18 03:30:05,074 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-18 03:30:05,079 INFO L312 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was UNSAFE (1/2) [2024-10-18 03:30:05,124 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-18 03:30:05,125 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-18 03:30:05,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.10 03:30:05 BasicIcfg [2024-10-18 03:30:05,128 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-18 03:30:05,128 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-18 03:30:05,128 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-18 03:30:05,129 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-18 03:30:05,129 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.10 03:30:02" (3/4) ... [2024-10-18 03:30:05,131 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-18 03:30:05,132 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-18 03:30:05,133 INFO L158 Benchmark]: Toolchain (without parser) took 3910.98ms. Allocated memory was 60.8MB in the beginning and 92.3MB in the end (delta: 31.5MB). Free memory was 37.9MB in the beginning and 25.5MB in the end (delta: 12.3MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2024-10-18 03:30:05,133 INFO L158 Benchmark]: CDTParser took 0.92ms. Allocated memory is still 60.8MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-18 03:30:05,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 920.96ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 37.7MB in the beginning and 44.9MB in the end (delta: -7.2MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2024-10-18 03:30:05,134 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.18ms. Allocated memory is still 75.5MB. Free memory was 44.5MB in the beginning and 42.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-18 03:30:05,135 INFO L158 Benchmark]: Boogie Preprocessor took 55.57ms. Allocated memory is still 75.5MB. Free memory was 42.0MB in the beginning and 39.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-18 03:30:05,135 INFO L158 Benchmark]: RCFGBuilder took 684.04ms. Allocated memory is still 75.5MB. Free memory was 39.6MB in the beginning and 40.9MB in the end (delta: -1.3MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2024-10-18 03:30:05,136 INFO L158 Benchmark]: TraceAbstraction took 2166.08ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 39.8MB in the beginning and 25.5MB in the end (delta: 14.3MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2024-10-18 03:30:05,136 INFO L158 Benchmark]: Witness Printer took 3.86ms. Allocated memory is still 92.3MB. Free memory is still 25.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-18 03:30:05,138 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92ms. Allocated memory is still 60.8MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 920.96ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 37.7MB in the beginning and 44.9MB in the end (delta: -7.2MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.18ms. Allocated memory is still 75.5MB. Free memory was 44.5MB in the beginning and 42.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.57ms. Allocated memory is still 75.5MB. Free memory was 42.0MB in the beginning and 39.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 684.04ms. Allocated memory is still 75.5MB. Free memory was 39.6MB in the beginning and 40.9MB in the end (delta: -1.3MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2166.08ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 39.8MB in the beginning and 25.5MB in the end (delta: 14.3MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Witness Printer took 3.86ms. Allocated memory is still 92.3MB. Free memory is still 25.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 3, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, 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: 658, independent: 271, independent conditional: 0, independent unconditional: 271, dependent: 387, dependent conditional: 0, dependent unconditional: 387, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 601, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 14, dependent conditional: 0, dependent unconditional: 14, 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: 98, Maximal queried relation: 1, ConditionTransformingIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 3, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, 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: 658, independent: 271, independent conditional: 0, independent unconditional: 271, dependent: 387, dependent conditional: 0, dependent unconditional: 387, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 601, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 14, dependent conditional: 0, dependent unconditional: 14, 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: 98 ], Independence queries for same thread: 13, Persistent sets #1 benchmarks: Persistent set computation time: 0.7s, 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 3, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, 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: 658, independent: 271, independent conditional: 0, independent unconditional: 271, dependent: 387, dependent conditional: 0, dependent unconditional: 387, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 601, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 14, dependent conditional: 0, dependent unconditional: 14, 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: 98, Maximal queried relation: 1, ConditionTransformingIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 95, independent unconditional: 481, dependent: 25, dependent conditional: 3, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 601, independent: 576, independent conditional: 0, independent unconditional: 576, dependent: 25, dependent conditional: 0, dependent unconditional: 25, 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: 658, independent: 271, independent conditional: 0, independent unconditional: 271, dependent: 387, dependent conditional: 0, dependent unconditional: 387, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 601, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 14, dependent conditional: 0, dependent unconditional: 14, 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: 98 ], 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)={6:5}, a=0, argc=3, b=0, checkPool={3:0}, i=0, iCheck=2, iSet=1, setPool={7:0}] [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)={6:5}, \old(param)={0:0}, a=0, argc=3, b=0, checkPool={3:0}, i=0, iCheck=2, iSet=1, setPool={7:0}] [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)={6:5}, \old(param)={0:0}, a=1, argc=3, b=0, checkPool={3:0}, err=0, i=1, iCheck=2, iSet=1, param={0:0}, setPool={7:0}] [L1262] COND FALSE 0 !(i < iSet) [L1268] 0 i = 0 VAL [\old(argc)=3, \old(argv)={6:5}, \old(param)={0:0}, a=1, argc=3, b=0, checkPool={3:0}, err=0, i=0, iCheck=2, iSet=1, param={0:0}, setPool={7:0}] [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)={6:5}, \old(param)={0:0}, \old(param)={0:0}, a=1, argc=3, b=0, checkPool={3:0}, err=0, i=0, iCheck=2, iSet=1, param={0:0}, setPool={7:0}] [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: 1.9s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.9s, 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, 0.1s 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, ConComCheckerStatistics: ConditionalCommutativityOverallTime: 0.0s, ConditionalCommutativityCheckTime: 0.0s, ConditionalCommutativityIAIntegrations: 0, ConditionalCommutativityDFSRestarts: 0, ConditionalCommutativityCommutingCounterexamples: 0, ConditionalCommutativityConditionCalculations: 0, ConditionalCommutativityTraceChecks: 0, ConditionalCommutativityImperfectProofs: 0 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-18 03:30:05,184 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 [2024-10-18 03:30:05,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample