/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2023/sum-rwlock.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:54:07,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:54:07,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:54:07,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:54:07,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:54:07,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:54:07,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:54:07,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:54:07,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:54:07,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:54:07,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:54:07,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:54:07,639 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:54:07,639 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:54:07,639 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:54:07,639 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:54:07,639 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:54:07,639 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:54:07,639 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:54:07,639 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:54:07,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:54:07,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:54:07,641 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:54:07,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:54:07,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:54:07,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:54:07,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:54:07,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:54:07,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:54:07,641 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:54:07,642 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:54:07,642 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:54:07,642 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:54:07,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:54:07,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:54:07,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:54:07,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:54:07,642 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:54:07,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:54:07,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:54:07,642 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:54:07,642 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:54:07,642 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:54:07,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:54:07,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:54:07,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:54:07,847 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:54:07,847 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:54:07,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/POPL2023/sum-rwlock.bpl [2025-04-26 16:54:07,848 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/POPL2023/sum-rwlock.bpl' [2025-04-26 16:54:07,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:54:07,865 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:54:07,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:54:07,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:54:07,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:54:07,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,920 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 22 [2025-04-26 16:54:07,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:54:07,922 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:54:07,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:54:07,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:54:07,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,930 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:54:07,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:54:07,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:54:07,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:54:07,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/1) ... [2025-04-26 16:54:07,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:54:07,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:07,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:07,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 16:54:07,998 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:54:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:54:07,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:54:07,998 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T1 given in one single declaration [2025-04-26 16:54:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure T1 [2025-04-26 16:54:07,998 INFO L138 BoogieDeclarations]: Found implementation of procedure T1 [2025-04-26 16:54:07,999 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T2 given in one single declaration [2025-04-26 16:54:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure T2 [2025-04-26 16:54:07,999 INFO L138 BoogieDeclarations]: Found implementation of procedure T2 [2025-04-26 16:54:07,999 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T3 given in one single declaration [2025-04-26 16:54:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure T3 [2025-04-26 16:54:07,999 INFO L138 BoogieDeclarations]: Found implementation of procedure T3 [2025-04-26 16:54:07,999 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:54:08,033 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:54:08,035 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:54:08,111 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:54:08,111 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:54:08,140 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:54:08,141 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-26 16:54:08,141 INFO L201 PluginConnector]: Adding new model sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:54:08 BoogieIcfgContainer [2025-04-26 16:54:08,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:54:08,142 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:54:08,142 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:54:08,147 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:54:08,148 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:54:08,148 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:54:07" (1/2) ... [2025-04-26 16:54:08,149 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@255f8739 and model type sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:54:08, skipping insertion in model container [2025-04-26 16:54:08,149 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:54:08,149 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:54:08" (2/2) ... [2025-04-26 16:54:08,150 INFO L376 chiAutomizerObserver]: Analyzing ICFG sum-rwlock.bpl [2025-04-26 16:54:08,188 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-26 16:54:08,226 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:54:08,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:54:08,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:08,232 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) [2025-04-26 16:54:08,233 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 [2025-04-26 16:54:08,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 36 transitions, 93 flow [2025-04-26 16:54:08,309 INFO L116 PetriNetUnfolderBase]: 3/30 cut-off events. [2025-04-26 16:54:08,312 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-26 16:54:08,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 3/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-04-26 16:54:08,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 36 transitions, 93 flow [2025-04-26 16:54:08,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 30 transitions, 78 flow [2025-04-26 16:54:08,320 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 37 places, 30 transitions, 78 flow [2025-04-26 16:54:08,326 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:54:08,515 WARN L140 AmpleReduction]: Number of pruned transitions: 246 [2025-04-26 16:54:08,515 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:54:08,515 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 63 [2025-04-26 16:54:08,516 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:27 [2025-04-26 16:54:08,516 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:138 [2025-04-26 16:54:08,516 WARN L145 AmpleReduction]: Times succ was already a loop node:69 [2025-04-26 16:54:08,516 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:20 [2025-04-26 16:54:08,516 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:54:08,521 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 229 states, 227 states have (on average 1.881057268722467) internal successors, (in total 427), 228 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:54:08,526 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:54:08,527 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:54:08,527 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:54:08,527 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:54:08,527 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:54:08,527 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:54:08,527 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:54:08,527 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:54:08,530 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 229 states, 227 states have (on average 1.881057268722467) internal successors, (in total 427), 228 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:54:08,548 INFO L131 ngComponentsAnalysis]: Automaton has 24 accepting balls. 173 [2025-04-26 16:54:08,548 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:54:08,548 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:54:08,554 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:54:08,554 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:54:08,554 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:54:08,555 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 229 states, 227 states have (on average 1.881057268722467) internal successors, (in total 427), 228 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:54:08,559 INFO L131 ngComponentsAnalysis]: Automaton has 24 accepting balls. 173 [2025-04-26 16:54:08,560 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:54:08,560 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:54:08,560 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:54:08,560 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:54:08,565 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L64: Formula: (= v_x_1 0) InVars {} OutVars{x=v_x_1} AuxVars[] AssignedVars[x]" "[83] L64-->L66: Formula: (= v_y_1 0) InVars {} OutVars{y=v_y_1} AuxVars[] AssignedVars[y]" "[116] L66-->L17: Formula: (= v_T1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{T1Thread1of1ForFork0_thidvar0=v_T1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[T1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:54:08,565 INFO L754 eck$LassoCheckResult]: Loop: "[96] L17-->L19: Formula: (= (+ v_x_5 1) v_x_4) InVars {x=v_x_5} OutVars{x=v_x_4} AuxVars[] AssignedVars[x]" "[97] L19-->L17: Formula: (= (+ v_y_4 1) v_y_5) InVars {y=v_y_5} OutVars{y=v_y_4} AuxVars[] AssignedVars[y]" [2025-04-26 16:54:08,568 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:54:08,568 INFO L85 PathProgramCache]: Analyzing trace with hash 118970, now seen corresponding path program 1 times [2025-04-26 16:54:08,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:54:08,573 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846894551] [2025-04-26 16:54:08,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:54:08,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:54:08,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:54:08,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:54:08,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:08,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:08,621 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:54:08,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:54:08,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:54:08,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:08,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:08,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:54:08,637 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:54:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash 4034, now seen corresponding path program 1 times [2025-04-26 16:54:08,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:54:08,638 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846386328] [2025-04-26 16:54:08,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:54:08,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:54:08,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:54:08,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:54:08,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:08,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:08,645 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:54:08,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:54:08,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:54:08,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:08,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:08,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:54:08,648 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:54:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash 114333243, now seen corresponding path program 1 times [2025-04-26 16:54:08,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:54:08,648 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309606878] [2025-04-26 16:54:08,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:54:08,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:54:08,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:54:08,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:54:08,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:08,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:08,652 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:54:08,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:54:08,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:54:08,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:54:08,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:54:08,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:54:08,738 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:54:08,739 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:54:08,739 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:54:08,739 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:54:08,739 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:54:08,739 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:08,740 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:54:08,740 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:54:08,740 INFO L132 ssoRankerPreferences]: Filename of dumped script: sum-rwlock.bpl_petrified1_Iteration1_Loop [2025-04-26 16:54:08,740 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:54:08,740 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:54:08,768 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:54:08,776 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:54:08,815 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:54:08,816 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:54:08,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:08,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:08,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:08,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:54:08,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:54:08,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:54:08,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:54:08,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:08,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:08,858 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:08,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:54:08,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:54:08,862 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:54:08,887 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:54:08,888 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {y=0} Honda state: {y=0} Generalized eigenvectors: [{y=0}, {y=0}, {y=-1}] Lambdas: [7, 0, 1] Nus: [0, 0] [2025-04-26 16:54:08,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:54:08,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:08,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:08,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:08,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:54:08,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:54:08,900 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:54:08,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 16:54:08,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:08,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:08,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:08,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:54:08,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:54:08,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:54:08,943 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:54:08,944 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x=0} Honda state: {x=0} Generalized eigenvectors: [{x=1}, {x=7}, {x=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2025-04-26 16:54:08,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:54:08,969 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:54:08,969 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:54:08,969 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:54:08,969 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:54:08,969 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:54:08,969 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:08,969 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:54:08,969 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:54:08,969 INFO L132 ssoRankerPreferences]: Filename of dumped script: sum-rwlock.bpl_petrified1_Iteration1_Lasso [2025-04-26 16:54:08,969 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:54:08,969 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:54:08,970 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:54:08,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:54:08,976 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:54:09,019 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:54:09,019 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:54:09,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:09,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:09,022 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:09,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:54:09,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:54:09,024 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:54:09,035 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:54:09,035 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {T1Thread1of1ForFork0_thidvar0=0} Honda state: {T1Thread1of1ForFork0_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:54:09,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:54:09,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:09,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:09,042 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:09,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:54:09,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:54:09,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:54:09,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:54:09,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:09,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:09,062 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:09,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:54:09,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:54:09,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:54:09,088 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:54:09,088 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x=0} Honda state: {x=0} Generalized eigenvectors: [{x=1}, {x=7}, {x=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2025-04-26 16:54:09,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:54:09,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:09,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:09,096 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:09,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:54:09,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:54:09,099 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:54:09,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 16:54:09,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:54:09,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:54:09,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:54:09,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:54:09,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:54:09,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:54:09,141 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:54:09,141 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {y=0} Honda state: {y=0} Generalized eigenvectors: [{y=0}, {y=0}, {y=-1}] Lambdas: [7, 0, 1] Nus: [0, 0] [2025-04-26 16:54:09,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:54:09,156 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 [2025-04-26 16:54:09,166 INFO L201 PluginConnector]: Adding new model sum-rwlock.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:54:09 BoogieIcfgContainer [2025-04-26 16:54:09,166 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:54:09,167 INFO L158 Benchmark]: Toolchain (without parser) took 1301.62ms. Allocated memory is still 167.8MB. Free memory was 93.3MB in the beginning and 103.2MB in the end (delta: -9.9MB). Peak memory consumption was 60.2MB. Max. memory is 8.0GB. [2025-04-26 16:54:09,167 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:54:09,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.44ms. Allocated memory is still 167.8MB. Free memory was 93.3MB in the beginning and 90.9MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:54:09,167 INFO L158 Benchmark]: Boogie Preprocessor took 24.43ms. Allocated memory is still 167.8MB. Free memory was 90.9MB in the beginning and 89.9MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:54:09,168 INFO L158 Benchmark]: RCFGBuilder took 194.03ms. Allocated memory is still 167.8MB. Free memory was 89.9MB in the beginning and 79.1MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:54:09,168 INFO L158 Benchmark]: BuchiAutomizer took 1023.97ms. Allocated memory is still 167.8MB. Free memory was 78.8MB in the beginning and 103.2MB in the end (delta: -24.4MB). Peak memory consumption was 47.6MB. Max. memory is 8.0GB. [2025-04-26 16:54:09,169 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.44ms. Allocated memory is still 167.8MB. Free memory was 93.3MB in the beginning and 90.9MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 24.43ms. Allocated memory is still 167.8MB. Free memory was 90.9MB in the beginning and 89.9MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 194.03ms. Allocated memory is still 167.8MB. Free memory was 89.9MB in the beginning and 79.1MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1023.97ms. Allocated memory is still 167.8MB. Free memory was 78.8MB in the beginning and 103.2MB in the end (delta: -24.4MB). Peak memory consumption was 47.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq212 hnf100 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 4 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.2s InitialAbstraction: Time to compute Ample Reduction [ms]: 293, Number of transitions in reduction automaton: 427, Number of states in reduction automaton: 229, Underlying: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {x=0, y=0, freshIdentifier7=0} State at position 1 is {x=0, y=0, freshIdentifier8=1} For i>1, the state at position i is {x=0 + sum_{k=0}^i 1 + 7*2^k + -7 + -7*k*2^(k-1), y=0 + sum_{k=0}^i -1, freshIdentifier9=1 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 4GEVs Lambdas: [1, 2, 1, 7, 0, 1] Mus: [0, 1, 0, 0, 0] - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L63] 0 x := 0; [L64] 0 y := 0; [L66] FORK 0 fork 1 T1(); Loop: [L18] x := x + 1; [L19] y := y - 1; End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-04-26 16:54:09,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...