./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-theta/unwind1-1.i --full-output --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis PERSISTENT_SETS --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6f232940 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind1-1.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 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis PERSISTENT_SETS --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6f23294-m [2025-03-20 06:19:50,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-20 06:19:50,817 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-03-20 06:19:50,822 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-20 06:19:50,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-20 06:19:50,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-20 06:19:50,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-20 06:19:50,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-20 06:19:50,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-20 06:19:50,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-20 06:19:50,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-20 06:19:50,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-20 06:19:50,847 INFO L153 SettingsManager]: * Use SBE=true [2025-03-20 06:19:50,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-20 06:19:50,848 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-20 06:19:50,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-20 06:19:50,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-03-20 06:19:50,849 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/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 -> 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Partial Order Reduction in concurrent analysis -> PERSISTENT_SETS [2025-03-20 06:19:51,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-20 06:19:51,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-20 06:19:51,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-20 06:19:51,072 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-20 06:19:51,072 INFO L274 PluginConnector]: CDTParser initialized [2025-03-20 06:19:51,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-theta/unwind1-1.i [2025-03-20 06:19:52,379 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/6de80bbb6/83aae617f1fd4fb9b49e0ff03cda0f24/FLAG063836adb [2025-03-20 06:19:52,586 INFO L389 CDTParser]: Found 1 translation units. [2025-03-20 06:19:52,586 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-1.i [2025-03-20 06:19:52,600 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/6de80bbb6/83aae617f1fd4fb9b49e0ff03cda0f24/FLAG063836adb [2025-03-20 06:19:53,429 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/6de80bbb6/83aae617f1fd4fb9b49e0ff03cda0f24 [2025-03-20 06:19:53,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-20 06:19:53,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-20 06:19:53,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-20 06:19:53,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-20 06:19:53,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-20 06:19:53,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c73954b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53, skipping insertion in model container [2025-03-20 06:19:53,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,459 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-20 06:19:53,648 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-1.i[33026,33039] [2025-03-20 06:19:53,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-20 06:19:53,668 INFO L200 MainTranslator]: Completed pre-run [2025-03-20 06:19:53,732 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-1.i[33026,33039] [2025-03-20 06:19:53,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-20 06:19:53,765 INFO L204 MainTranslator]: Completed translation [2025-03-20 06:19:53,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53 WrapperNode [2025-03-20 06:19:53,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-20 06:19:53,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-20 06:19:53,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-20 06:19:53,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-20 06:19:53,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,799 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 51 [2025-03-20 06:19:53,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-20 06:19:53,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-20 06:19:53,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-20 06:19:53,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-20 06:19:53,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,813 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-20 06:19:53,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-20 06:19:53,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-20 06:19:53,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-20 06:19:53,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (1/1) ... [2025-03-20 06:19:53,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-20 06:19:53,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 06:19:53,851 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) [2025-03-20 06:19:53,854 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 [2025-03-20 06:19:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-20 06:19:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-20 06:19:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-20 06:19:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-20 06:19:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-20 06:19:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-20 06:19:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-20 06:19:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-20 06:19:53,875 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-20 06:19:53,969 INFO L234 CfgBuilder]: Building ICFG [2025-03-20 06:19:53,971 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-20 06:19:54,062 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-20 06:19:54,062 INFO L283 CfgBuilder]: Performing block encoding [2025-03-20 06:19:54,150 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-20 06:19:54,150 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-20 06:19:54,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 06:19:54 BoogieIcfgContainer [2025-03-20 06:19:54,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-20 06:19:54,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-20 06:19:54,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-20 06:19:54,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-20 06:19:54,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 06:19:53" (1/3) ... [2025-03-20 06:19:54,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2877c3de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 06:19:54, skipping insertion in model container [2025-03-20 06:19:54,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 06:19:53" (2/3) ... [2025-03-20 06:19:54,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2877c3de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 06:19:54, skipping insertion in model container [2025-03-20 06:19:54,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 06:19:54" (3/3) ... [2025-03-20 06:19:54,160 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-1.i [2025-03-20 06:19:54,171 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-20 06:19:54,173 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-1.i that has 3 procedures, 22 locations, 22 edges, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-20 06:19:54,173 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-20 06:19:54,211 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-20 06:19:54,243 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-20 06:19:54,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-03-20 06:19:54,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 06:19:54,246 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) [2025-03-20 06:19:54,248 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 [2025-03-20 06:19:54,304 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-03-20 06:19:54,309 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == f2Thread1of1ForFork0 ======== [2025-03-20 06:19:54,314 INFO L340 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;@2dcae3a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-20 06:19:54,314 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-20 06:19:54,489 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-20 06:19:54,493 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 06:19:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1012823644, now seen corresponding path program 1 times [2025-03-20 06:19:54,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 06:19:54,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324007865] [2025-03-20 06:19:54,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 06:19:54,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 06:19:54,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-20 06:19:54,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-20 06:19:54,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 06:19:54,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 06:19:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 06:19:54,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 06:19:54,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324007865] [2025-03-20 06:19:54,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324007865] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-20 06:19:54,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-20 06:19:54,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-20 06:19:54,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135977452] [2025-03-20 06:19:54,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-20 06:19:54,747 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-20 06:19:54,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 06:19:54,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-20 06:19:54,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-20 06:19:54,758 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 06:19:54,759 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 06:19:54,760 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-03-20 06:19:54,760 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 06:19:54,810 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-20 06:19:54,811 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-20 06:19:54,811 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-20 06:19:54,811 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 06:19:54,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1332731253, now seen corresponding path program 1 times [2025-03-20 06:19:54,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 06:19:54,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137870529] [2025-03-20 06:19:54,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 06:19:54,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 06:19:54,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-20 06:19:54,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-20 06:19:54,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 06:19:54,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 06:19:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 06:19:54,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 06:19:54,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137870529] [2025-03-20 06:19:54,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137870529] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-20 06:19:54,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836026723] [2025-03-20 06:19:54,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 06:19:54,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 06:19:54,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 06:19:54,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 06:19:54,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-20 06:19:54,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-20 06:19:54,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-20 06:19:54,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 06:19:54,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 06:19:54,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-20 06:19:54,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 06:19:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 06:19:55,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-20 06:19:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 06:19:55,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836026723] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-20 06:19:55,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-20 06:19:55,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-20 06:19:55,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564662631] [2025-03-20 06:19:55,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-20 06:19:55,126 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-20 06:19:55,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 06:19:55,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-20 06:19:55,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-20 06:19:55,127 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 06:19:55,127 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 06:19:55,127 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 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) [2025-03-20 06:19:55,127 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-03-20 06:19:55,127 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 06:19:55,214 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-20 06:19:55,214 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-20 06:19:55,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-20 06:19:55,415 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-20 06:19:55,415 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-20 06:19:55,415 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 06:19:55,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1635034756, now seen corresponding path program 2 times [2025-03-20 06:19:55,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 06:19:55,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861313377] [2025-03-20 06:19:55,416 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-20 06:19:55,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 06:19:55,420 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-20 06:19:55,425 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-20 06:19:55,425 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-20 06:19:55,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 06:19:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 06:19:55,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-20 06:19:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861313377] [2025-03-20 06:19:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861313377] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-20 06:19:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338670566] [2025-03-20 06:19:55,498 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-20 06:19:55,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 06:19:55,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-20 06:19:55,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-20 06:19:55,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-20 06:19:55,537 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-20 06:19:55,546 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-20 06:19:55,547 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-20 06:19:55,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-20 06:19:55,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-20 06:19:55,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-20 06:19:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-20 06:19:55,575 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-20 06:19:55,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338670566] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-20 06:19:55,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-20 06:19:55,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-20 06:19:55,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651636607] [2025-03-20 06:19:55,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-20 06:19:55,576 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-20 06:19:55,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-20 06:19:55,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-20 06:19:55,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-20 06:19:55,576 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-20 06:19:55,577 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-20 06:19:55,577 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2025-03-20 06:19:55,577 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-03-20 06:19:55,577 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2025-03-20 06:19:55,577 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-20 06:19:55,667 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-20 06:19:55,667 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-20 06:19:55,668 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-20 06:19:55,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-20 06:19:55,868 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-20 06:19:55,868 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-20 06:19:55,869 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-20 06:19:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash 995279260, now seen corresponding path program 1 times [2025-03-20 06:19:55,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-20 06:19:55,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539290384] [2025-03-20 06:19:55,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-20 06:19:55,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-20 06:19:55,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-20 06:19:55,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-20 06:19:55,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 06:19:55,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-20 06:19:55,876 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-20 06:19:55,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-20 06:19:55,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-20 06:19:55,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-20 06:19:55,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-20 06:19:55,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-20 06:19:55,890 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-20 06:19:55,891 INFO L791 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-20 06:19:55,892 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-20 06:19:55,895 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2025-03-20 06:19:55,896 INFO L320 ceAbstractionStarter]: Result for error location f2Thread1of1ForFork0 was UNSAFE (1/2) [2025-03-20 06:19:55,924 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-20 06:19:55,924 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-03-20 06:19:55,933 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 [2025-03-20 06:19:55,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 06:19:55 BasicIcfg [2025-03-20 06:19:55,933 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-20 06:19:55,934 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-20 06:19:55,934 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-20 06:19:55,934 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-20 06:19:55,934 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 06:19:54" (3/4) ... [2025-03-20 06:19:55,935 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-20 06:19:55,965 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 10. [2025-03-20 06:19:55,991 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-03-20 06:19:55,992 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2025-03-20 06:19:55,992 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-20 06:19:55,992 INFO L158 Benchmark]: Toolchain (without parser) took 2560.68ms. Allocated memory is still 109.1MB. Free memory was 78.7MB in the beginning and 30.5MB in the end (delta: 48.2MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2025-03-20 06:19:55,992 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-20 06:19:55,992 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.85ms. Allocated memory is still 109.1MB. Free memory was 78.5MB in the beginning and 55.9MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-20 06:19:55,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.71ms. Allocated memory is still 109.1MB. Free memory was 55.7MB in the beginning and 54.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-20 06:19:55,993 INFO L158 Benchmark]: Boogie Preprocessor took 24.00ms. Allocated memory is still 109.1MB. Free memory was 54.1MB in the beginning and 53.2MB in the end (delta: 953.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-20 06:19:55,993 INFO L158 Benchmark]: RCFGBuilder took 327.58ms. Allocated memory is still 109.1MB. Free memory was 53.2MB in the beginning and 73.5MB in the end (delta: -20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2025-03-20 06:19:55,993 INFO L158 Benchmark]: TraceAbstraction took 1778.64ms. Allocated memory is still 109.1MB. Free memory was 72.6MB in the beginning and 37.4MB in the end (delta: 35.2MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2025-03-20 06:19:55,993 INFO L158 Benchmark]: Witness Printer took 57.85ms. Allocated memory is still 109.1MB. Free memory was 37.4MB in the beginning and 30.5MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-20 06:19:55,994 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.85ms. Allocated memory is still 109.1MB. Free memory was 78.5MB in the beginning and 55.9MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.71ms. Allocated memory is still 109.1MB. Free memory was 55.7MB in the beginning and 54.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.00ms. Allocated memory is still 109.1MB. Free memory was 54.1MB in the beginning and 53.2MB in the end (delta: 953.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 327.58ms. Allocated memory is still 109.1MB. Free memory was 53.2MB in the beginning and 73.5MB in the end (delta: -20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1778.64ms. Allocated memory is still 109.1MB. Free memory was 72.6MB in the beginning and 37.4MB in the end (delta: 35.2MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Witness Printer took 57.85ms. Allocated memory is still 109.1MB. Free memory was 37.4MB in the beginning and 30.5MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. 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: 164, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 164, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 164, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 164, independent: 157, independent conditional: 0, independent unconditional: 157, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 7, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 7, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 160, independent: 43, independent conditional: 0, independent unconditional: 43, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 164, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 164, unknown conditional: 0, unknown unconditional: 164] , Statistics on independence cache: Total cache size (in pairs): 164, Positive cache size: 158, Positive conditional cache size: 0, Positive unconditional cache size: 158, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Independence queries for same thread: 0, Persistent sets #1 benchmarks: Persistent set computation time: 0.2s, Number of persistent set computation: 14, Number of trivial persistent sets: 2, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 164, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 164, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 164, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 164, independent: 157, independent conditional: 0, independent unconditional: 157, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 7, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 7, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 160, independent: 43, independent conditional: 0, independent unconditional: 43, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 164, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 164, unknown conditional: 0, unknown unconditional: 164] , Statistics on independence cache: Total cache size (in pairs): 164, Positive cache size: 158, Positive conditional cache size: 0, Positive unconditional cache size: 158, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Independence queries for same thread: 0 - CounterExampleResult [Line: 753]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L772] 0 _N = 1 [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\at(arg, Pre)={0:0}, _N=1, limit=0, t1=0] [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\at(arg, Pre)={0:0}, _N=1, limit=0, t1=0, t2=1] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L760] 1 limit = _N + 1 VAL [\at(arg, Pre)={0:0}, _N=1, arg={0:0}, limit=2] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=0, limit=2] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=1, limit=2] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, limit=2] [L767] COND FALSE 2 !(i < bound) [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression VAL [\at(arg, Pre)={0:0}, \at(expression, Pre)=0, _N=1, arg={0:0}, expression=0, limit=2] [L753] 2 reach_error() VAL [\at(arg, Pre)={0:0}, \at(expression, Pre)=0, _N=1, arg={0:0}, expression=0, limit=2] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: f2Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 37 locations, 42 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.4s, 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: 18, 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, 0.5s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 5 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 5/9 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: No data available RESULT: Ultimate proved your program to be incorrect! [2025-03-20 06:19:56,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE