/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/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/2_thr/lock2.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:24:22,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:22,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:22,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:22,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:22,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:22,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:22,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:22,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:22,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:22,972 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:22,972 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:22,972 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:22,972 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:22,972 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:22,972 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:22,972 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:22,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:22,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:22,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:22,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:22,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:22,974 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:22,974 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:23,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:23,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:23,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:23,219 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:23,220 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:23,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/lock2.c.bpl [2025-04-26 16:24:23,221 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/lock2.c.bpl' [2025-04-26 16:24:23,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:23,240 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:23,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:23,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:23,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:23,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,274 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:23,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:23,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:23,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:23,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:23,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,284 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:23,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:23,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:23,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:23,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/1) ... [2025-04-26 16:24:23,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:23,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:23,323 INFO L229 MonitoredProcess]: Starting monitored process 1 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 16:24:23,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-04-26 16:24:23,346 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:23,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:23,347 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:23,347 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:23,348 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 16:24:23,383 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:23,385 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:23,475 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:23,475 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:23,490 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:23,490 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:23,491 INFO L201 PluginConnector]: Adding new model lock2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:23 BoogieIcfgContainer [2025-04-26 16:24:23,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:23,494 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:23,494 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:23,498 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:23,499 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:23,499 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:23" (1/2) ... [2025-04-26 16:24:23,500 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f9fb6bf and model type lock2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:23, skipping insertion in model container [2025-04-26 16:24:23,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:23,501 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "lock2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:23" (2/2) ... [2025-04-26 16:24:23,502 INFO L376 chiAutomizerObserver]: Analyzing ICFG lock2.c.bpl [2025-04-26 16:24:23,554 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:24:23,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 26 transitions, 66 flow [2025-04-26 16:24:23,608 INFO L116 PetriNetUnfolderBase]: 3/22 cut-off events. [2025-04-26 16:24:23,612 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:24:23,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 3/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2025-04-26 16:24:23,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 26 transitions, 66 flow [2025-04-26 16:24:23,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 56 flow [2025-04-26 16:24:23,622 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 26 places, 22 transitions, 56 flow [2025-04-26 16:24:23,630 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:23,630 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:23,630 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:23,630 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:23,630 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:23,630 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:23,630 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:23,630 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:23,631 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:23,662 INFO L131 ngComponentsAnalysis]: Automaton has 17 accepting balls. 55 [2025-04-26 16:24:23,663 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:23,663 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:23,665 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:23,665 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:24:23,665 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:23,666 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 81 states, but on-demand construction may add more states [2025-04-26 16:24:23,668 INFO L131 ngComponentsAnalysis]: Automaton has 17 accepting balls. 55 [2025-04-26 16:24:23,669 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:23,669 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:23,669 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:23,669 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:24:23,672 INFO L752 eck$LassoCheckResult]: Stem: "[82] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[60] $Ultimate##0-->L27: Formula: (and (= v_l_7 0) (< 0 v_l_8)) InVars {l=v_l_8} OutVars{l=v_l_7} AuxVars[] AssignedVars[l]" [2025-04-26 16:24:23,672 INFO L754 eck$LassoCheckResult]: Loop: "[62] L27-->L29: Formula: (< v_x1_1 v_z_2) InVars {x1=v_x1_1, z=v_z_2} OutVars{x1=v_x1_1, z=v_z_2} AuxVars[] AssignedVars[]" "[64] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[67] L30-->L27: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-04-26 16:24:23,675 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:23,676 INFO L85 PathProgramCache]: Analyzing trace with hash 3563, now seen corresponding path program 1 times [2025-04-26 16:24:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:23,680 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484248086] [2025-04-26 16:24:23,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:23,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:23,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:23,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:23,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:23,736 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:23,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:23,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:23,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:23,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:23,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:23,767 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash 91424, now seen corresponding path program 1 times [2025-04-26 16:24:23,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:23,768 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84291112] [2025-04-26 16:24:23,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:23,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:23,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:23,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:23,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:23,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:23,776 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:23,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:23,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:23,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:23,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:23,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:23,782 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:23,782 INFO L85 PathProgramCache]: Analyzing trace with hash 106206966, now seen corresponding path program 1 times [2025-04-26 16:24:23,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:23,782 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120938600] [2025-04-26 16:24:23,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:23,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:23,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:23,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:23,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:23,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:23,791 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:23,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:23,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:23,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:23,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:23,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:23,853 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:23,854 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:23,854 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:23,854 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:23,854 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:23,854 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:23,854 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:23,854 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:23,854 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock2.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:23,854 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:23,854 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:23,866 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:23,882 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:23,948 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:23,952 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:23,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:23,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:23,961 INFO L229 MonitoredProcess]: Starting monitored process 2 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 16:24:23,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:24:23,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:23,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:23,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-04-26 16:24:23,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:23,998 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 16:24:24,002 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 16:24:24,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:24,003 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:24,078 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:24,083 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 16:24:24,083 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:24,083 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:24,083 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:24,083 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:24,083 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:24,083 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,083 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:24,084 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:24,084 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock2.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:24,084 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:24,084 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:24,085 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:24,090 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:24,111 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:24,114 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:24,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:24,117 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 16:24:24,117 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 16:24:24,118 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:24,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:24,129 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:24,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:24,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:24,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:24,135 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:24,135 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:24,138 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:24,143 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:24,144 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:24,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:24,148 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 16:24:24,149 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 16:24:24,150 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:24,153 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 16:24:24,154 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:24,154 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:24,154 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 16:24:24,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:24:24,162 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:24,192 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:24,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:24,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:24,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:24,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:24,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:24,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:24,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:24,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:24,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:24,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:24,218 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:24,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:24,338 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:24:24,340 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 81 states, but on-demand construction may add more states Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 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 16:24:24,496 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 81 states, but on-demand construction may add more states. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 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) Result 256 states and 558 transitions. Complement of second has 7 states. [2025-04-26 16:24:24,498 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 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 16:24:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2025-04-26 16:24:24,509 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:24:24,510 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:24,510 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:24:24,510 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:24,510 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:24:24,510 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:24,511 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 256 states and 558 transitions. [2025-04-26 16:24:24,524 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 61 [2025-04-26 16:24:24,529 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 256 states to 179 states and 397 transitions. [2025-04-26 16:24:24,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 118 [2025-04-26 16:24:24,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 148 [2025-04-26 16:24:24,530 INFO L74 IsDeterministic]: Start isDeterministic. Operand 179 states and 397 transitions. [2025-04-26 16:24:24,531 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:24,531 INFO L218 hiAutomatonCegarLoop]: Abstraction has 179 states and 397 transitions. [2025-04-26 16:24:24,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states and 397 transitions. [2025-04-26 16:24:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 124. [2025-04-26 16:24:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 124 states have (on average 2.2983870967741935) internal successors, (in total 285), 123 states have internal predecessors, (285), 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 16:24:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 285 transitions. [2025-04-26 16:24:24,566 INFO L240 hiAutomatonCegarLoop]: Abstraction has 124 states and 285 transitions. [2025-04-26 16:24:24,566 INFO L438 stractBuchiCegarLoop]: Abstraction has 124 states and 285 transitions. [2025-04-26 16:24:24,566 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:24:24,566 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 124 states and 285 transitions. [2025-04-26 16:24:24,568 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 49 [2025-04-26 16:24:24,569 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:24,569 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:24,569 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:24:24,569 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:24:24,569 INFO L752 eck$LassoCheckResult]: Stem: "[82] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[79] L13-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[70] $Ultimate##0-->L47: Formula: (and (= v_l_11 0) (< 0 v_l_12)) InVars {l=v_l_12} OutVars{l=v_l_11} AuxVars[] AssignedVars[l]" [2025-04-26 16:24:24,570 INFO L754 eck$LassoCheckResult]: Loop: "[72] L47-->L49: Formula: (< v_x2_3 v_z_5) InVars {x2=v_x2_3, z=v_z_5} OutVars{x2=v_x2_3, z=v_z_5} AuxVars[] AssignedVars[]" "[74] L49-->L50: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[76] L50-->L47: Formula: (= v_x1_6 (+ v_x1_5 1)) InVars {x1=v_x1_6} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" [2025-04-26 16:24:24,570 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash 111112, now seen corresponding path program 1 times [2025-04-26 16:24:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:24,570 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147228476] [2025-04-26 16:24:24,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:24,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:24,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:24,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:24,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:24,574 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:24,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:24,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:24,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:24,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:24,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:24,577 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:24,577 INFO L85 PathProgramCache]: Analyzing trace with hash 101353, now seen corresponding path program 1 times [2025-04-26 16:24:24,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:24,578 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202633307] [2025-04-26 16:24:24,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:24,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:24,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:24,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:24,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:24,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:24,584 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:24,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:24,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:24,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:24,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:24,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:24,593 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:24,593 INFO L85 PathProgramCache]: Analyzing trace with hash -984758142, now seen corresponding path program 1 times [2025-04-26 16:24:24,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:24,593 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74961251] [2025-04-26 16:24:24,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:24,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:24,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:24,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:24,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:24,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:24,604 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:24,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:24,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:24,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:24,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:24,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:24,644 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:24,644 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:24,644 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:24,644 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:24,644 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:24,644 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,644 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:24,644 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:24,644 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock2.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:24,644 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:24,644 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:24,645 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:24,655 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:24,688 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:24,688 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:24,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:24,692 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 16:24:24,693 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 16:24:24,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:24,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:24,713 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 16:24:24,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:24,715 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 16:24:24,717 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 16:24:24,719 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:24,719 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:24,747 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:24,747 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x1=0} Honda state: {x1=0} Generalized eigenvectors: [{x1=-1}, {x1=7}, {x1=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2025-04-26 16:24:24,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:24,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:24,758 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 16:24:24,761 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 16:24:24,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:24,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:24,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:24,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:24,786 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 16:24:24,788 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 16:24:24,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:24,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:24,857 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:24,861 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 16:24:24,862 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:24,862 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:24,862 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:24,862 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:24,862 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:24,862 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,862 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:24,862 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:24,862 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock2.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:24,862 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:24,862 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:24,863 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:24,866 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:24,895 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:24,896 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:24,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:24,898 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 16:24:24,899 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 16:24:24,901 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:24,911 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:24,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:24,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:24,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:24,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:24,913 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:24,913 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:24,915 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:24,922 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 16:24:24,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:24,924 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 16:24:24,926 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 16:24:24,926 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:24,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:24,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:24,937 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:24,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:24,937 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:24,938 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:24,938 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:24,943 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:24,945 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:24,945 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:24,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:24,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:24,947 INFO L229 MonitoredProcess]: Starting monitored process 12 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 16:24:24,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:24:24,950 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:24,953 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:24:24,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:24:24,954 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:24,954 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:24,954 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-04-26 16:24:24,960 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 16:24:24,961 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:24,978 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:24,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:24,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:24,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:24,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:24,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:24,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:25,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:25,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:25,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:25,004 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:25,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:25,039 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:24:25,039 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 124 states and 285 transitions. cyclomatic complexity: 184 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 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 16:24:25,093 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 124 states and 285 transitions. cyclomatic complexity: 184. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 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) Result 381 states and 840 transitions. Complement of second has 7 states. [2025-04-26 16:24:25,094 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 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 16:24:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2025-04-26 16:24:25,095 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 53 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 16:24:25,095 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:25,095 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 53 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:24:25,095 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:25,095 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 53 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 16:24:25,095 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:25,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 381 states and 840 transitions. [2025-04-26 16:24:25,100 INFO L131 ngComponentsAnalysis]: Automaton has 20 accepting balls. 58 [2025-04-26 16:24:25,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 381 states to 282 states and 638 transitions. [2025-04-26 16:24:25,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 137 [2025-04-26 16:24:25,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 167 [2025-04-26 16:24:25,103 INFO L74 IsDeterministic]: Start isDeterministic. Operand 282 states and 638 transitions. [2025-04-26 16:24:25,103 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:25,104 INFO L218 hiAutomatonCegarLoop]: Abstraction has 282 states and 638 transitions. [2025-04-26 16:24:25,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states and 638 transitions. [2025-04-26 16:24:25,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 213. [2025-04-26 16:24:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 213 states have (on average 2.3708920187793425) internal successors, (in total 505), 212 states have internal predecessors, (505), 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 16:24:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 505 transitions. [2025-04-26 16:24:25,113 INFO L240 hiAutomatonCegarLoop]: Abstraction has 213 states and 505 transitions. [2025-04-26 16:24:25,113 INFO L438 stractBuchiCegarLoop]: Abstraction has 213 states and 505 transitions. [2025-04-26 16:24:25,113 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:24:25,113 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 213 states and 505 transitions. [2025-04-26 16:24:25,115 INFO L131 ngComponentsAnalysis]: Automaton has 17 accepting balls. 52 [2025-04-26 16:24:25,116 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:25,116 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:25,116 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:24:25,116 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:25,116 INFO L752 eck$LassoCheckResult]: Stem: "[82] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[60] $Ultimate##0-->L27: Formula: (and (= v_l_7 0) (< 0 v_l_8)) InVars {l=v_l_8} OutVars{l=v_l_7} AuxVars[] AssignedVars[l]" "[61] L27-->L32: Formula: (<= v_z_3 v_x1_4) InVars {x1=v_x1_4, z=v_z_3} OutVars{x1=v_x1_4, z=v_z_3} AuxVars[] AssignedVars[]" "[63] L32-->L33-1: Formula: (= v_l_3 1) InVars {} OutVars{l=v_l_3} AuxVars[] AssignedVars[l]" [2025-04-26 16:24:25,116 INFO L754 eck$LassoCheckResult]: Loop: "[66] L33-1-->L35: Formula: (< v_x3_2 v_z_4) InVars {x3=v_x3_2, z=v_z_4} OutVars{x3=v_x3_2, z=v_z_4} AuxVars[] AssignedVars[]" "[69] L35-->L33-1: Formula: (= (+ v_x3_4 1) v_x3_3) InVars {x3=v_x3_4} OutVars{x3=v_x3_3} AuxVars[] AssignedVars[x3]" [2025-04-26 16:24:25,117 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:25,117 INFO L85 PathProgramCache]: Analyzing trace with hash 3425997, now seen corresponding path program 1 times [2025-04-26 16:24:25,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:25,117 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365851705] [2025-04-26 16:24:25,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:25,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:25,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:25,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:25,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:25,120 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:25,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:25,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:25,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:25,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:25,126 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:25,126 INFO L85 PathProgramCache]: Analyzing trace with hash 3076, now seen corresponding path program 1 times [2025-04-26 16:24:25,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:25,126 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627915746] [2025-04-26 16:24:25,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:25,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:25,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:25,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:25,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:25,129 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:25,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:25,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:25,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:25,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:25,131 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1002582064, now seen corresponding path program 1 times [2025-04-26 16:24:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:25,131 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479825638] [2025-04-26 16:24:25,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:25,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:25,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:25,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:25,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:25,135 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:25,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:25,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:25,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:25,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:25,153 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:25,154 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:25,154 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:25,154 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:25,154 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:25,154 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,154 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:25,154 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:25,154 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock2.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:25,154 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:25,154 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:25,154 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:25,173 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:25,174 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:25,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,177 INFO L229 MonitoredProcess]: Starting monitored process 13 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 16:24:25,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:24:25,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:25,187 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:25,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:24:25,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,206 INFO L229 MonitoredProcess]: Starting monitored process 14 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 16:24:25,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:24:25,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:25,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:25,277 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:25,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:24:25,282 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:25,282 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:25,282 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:25,282 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:25,282 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:25,282 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,282 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:25,282 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:25,282 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock2.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:25,282 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:25,282 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:25,283 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:25,297 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:25,297 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:25,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,300 INFO L229 MonitoredProcess]: Starting monitored process 15 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 16:24:25,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:24:25,306 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:25,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:25,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:25,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:25,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:25,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:25,317 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:25,317 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:25,322 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:25,325 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:25,325 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:25,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,328 INFO L229 MonitoredProcess]: Starting monitored process 16 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 16:24:25,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:24:25,330 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:25,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-04-26 16:24:25,333 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:25,333 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:25,333 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-04-26 16:24:25,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 16:24:25,340 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:25,354 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:25,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:25,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:25,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:25,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:25,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:25,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:25,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:25,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:25,372 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:25,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:25,390 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:24:25,391 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 213 states and 505 transitions. cyclomatic complexity: 323 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 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 16:24:25,437 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 213 states and 505 transitions. cyclomatic complexity: 323. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 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) Result 314 states and 768 transitions. Complement of second has 6 states. [2025-04-26 16:24:25,437 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 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 16:24:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2025-04-26 16:24:25,438 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:25,438 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:25,438 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:24:25,438 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:25,438 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 16:24:25,438 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:25,438 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 314 states and 768 transitions. [2025-04-26 16:24:25,444 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 36 [2025-04-26 16:24:25,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 314 states to 170 states and 371 transitions. [2025-04-26 16:24:25,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2025-04-26 16:24:25,447 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 89 [2025-04-26 16:24:25,447 INFO L74 IsDeterministic]: Start isDeterministic. Operand 170 states and 371 transitions. [2025-04-26 16:24:25,447 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:25,447 INFO L218 hiAutomatonCegarLoop]: Abstraction has 170 states and 371 transitions. [2025-04-26 16:24:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states and 371 transitions. [2025-04-26 16:24:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 161. [2025-04-26 16:24:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 161 states have (on average 2.1925465838509317) internal successors, (in total 353), 160 states have internal predecessors, (353), 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 16:24:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 353 transitions. [2025-04-26 16:24:25,454 INFO L240 hiAutomatonCegarLoop]: Abstraction has 161 states and 353 transitions. [2025-04-26 16:24:25,454 INFO L438 stractBuchiCegarLoop]: Abstraction has 161 states and 353 transitions. [2025-04-26 16:24:25,454 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:24:25,454 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 161 states and 353 transitions. [2025-04-26 16:24:25,455 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 36 [2025-04-26 16:24:25,455 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:25,455 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:25,455 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:24:25,455 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:24:25,456 INFO L752 eck$LassoCheckResult]: Stem: "[82] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[60] $Ultimate##0-->L27: Formula: (and (= v_l_7 0) (< 0 v_l_8)) InVars {l=v_l_8} OutVars{l=v_l_7} AuxVars[] AssignedVars[l]" "[62] L27-->L29: Formula: (< v_x1_1 v_z_2) InVars {x1=v_x1_1, z=v_z_2} OutVars{x1=v_x1_1, z=v_z_2} AuxVars[] AssignedVars[]" "[64] L29-->L30: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[79] L13-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[70] $Ultimate##0-->L47: Formula: (and (= v_l_11 0) (< 0 v_l_12)) InVars {l=v_l_12} OutVars{l=v_l_11} AuxVars[] AssignedVars[l]" "[67] L30-->L27: Formula: (= v_x2_2 (+ v_x2_1 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[61] L27-->L32: Formula: (<= v_z_3 v_x1_4) InVars {x1=v_x1_4, z=v_z_3} OutVars{x1=v_x1_4, z=v_z_3} AuxVars[] AssignedVars[]" [2025-04-26 16:24:25,456 INFO L754 eck$LassoCheckResult]: Loop: "[72] L47-->L49: Formula: (< v_x2_3 v_z_5) InVars {x2=v_x2_3, z=v_z_5} OutVars{x2=v_x2_3, z=v_z_5} AuxVars[] AssignedVars[]" "[74] L49-->L50: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[76] L50-->L47: Formula: (= v_x1_6 (+ v_x1_5 1)) InVars {x1=v_x1_6} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" [2025-04-26 16:24:25,456 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:25,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1378746146, now seen corresponding path program 1 times [2025-04-26 16:24:25,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:25,456 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465396605] [2025-04-26 16:24:25,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:25,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:25,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:24:25,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:24:25,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:25,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:24:25,494 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465396605] [2025-04-26 16:24:25,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465396605] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:24:25,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:24:25,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 16:24:25,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930862768] [2025-04-26 16:24:25,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:24:25,497 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:24:25,498 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash 101353, now seen corresponding path program 2 times [2025-04-26 16:24:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:25,498 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297175095] [2025-04-26 16:24:25,498 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 16:24:25,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:25,500 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:25,501 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:25,501 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 16:24:25,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:25,501 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:25,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:25,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:25,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:25,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:25,525 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:25,525 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:25,525 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:25,525 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:25,525 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:25,525 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,525 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:25,525 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:25,525 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock2.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:24:25,525 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:25,525 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:25,526 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:25,529 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:25,559 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:25,559 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:25,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,561 INFO L229 MonitoredProcess]: Starting monitored process 17 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 16:24:25,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:24:25,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:25,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:25,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:25,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,583 INFO L229 MonitoredProcess]: Starting monitored process 18 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 16:24:25,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:24:25,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:25,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:25,610 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:24:25,610 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x1=0} Honda state: {x1=0} Generalized eigenvectors: [{x1=-1}, {x1=7}, {x1=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2025-04-26 16:24:25,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 16:24:25,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,618 INFO L229 MonitoredProcess]: Starting monitored process 19 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 16:24:25,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 16:24:25,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:25,620 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:25,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-04-26 16:24:25,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,639 INFO L229 MonitoredProcess]: Starting monitored process 20 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 16:24:25,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:24:25,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:25,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:25,706 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:25,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-04-26 16:24:25,712 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:25,712 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:25,712 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:25,712 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:25,712 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:25,712 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,712 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:25,712 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:25,712 INFO L132 ssoRankerPreferences]: Filename of dumped script: lock2.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:24:25,712 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:25,712 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:25,713 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:25,715 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:25,739 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:25,740 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:25,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,741 INFO L229 MonitoredProcess]: Starting monitored process 21 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 16:24:25,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:24:25,744 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:25,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:25,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:25,754 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:25,754 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:25,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:25,754 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:25,754 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:25,756 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:24:25,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:25,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,763 INFO L229 MonitoredProcess]: Starting monitored process 22 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 16:24:25,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:24:25,766 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:25,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:25,776 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:25,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:25,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:25,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:25,777 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:25,777 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:25,779 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:25,781 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:25,781 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:25,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:25,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:25,783 INFO L229 MonitoredProcess]: Starting monitored process 23 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 16:24:25,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 16:24:25,785 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:25,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-04-26 16:24:25,788 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:25,788 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:25,788 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-04-26 16:24:25,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 16:24:25,794 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:25,807 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:25,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:24:25,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:24:25,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:25,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:25,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:25,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:25,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:25,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:25,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:25,833 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:25,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:25,865 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:24:25,865 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 161 states and 353 transitions. cyclomatic complexity: 212 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (in total 11), 4 states have internal predecessors, (11), 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 16:24:25,908 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 161 states and 353 transitions. cyclomatic complexity: 212. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (in total 11), 4 states have internal predecessors, (11), 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) Result 233 states and 533 transitions. Complement of second has 6 states. [2025-04-26 16:24:25,908 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (in total 11), 4 states have internal predecessors, (11), 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 16:24:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2025-04-26 16:24:25,909 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 39 transitions. Stem has 8 letters. Loop has 3 letters. [2025-04-26 16:24:25,909 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:25,909 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 39 transitions. Stem has 11 letters. Loop has 3 letters. [2025-04-26 16:24:25,909 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:25,909 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 39 transitions. Stem has 8 letters. Loop has 6 letters. [2025-04-26 16:24:25,909 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:25,909 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 233 states and 533 transitions. [2025-04-26 16:24:25,912 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 18 [2025-04-26 16:24:25,913 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 233 states to 131 states and 272 transitions. [2025-04-26 16:24:25,913 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2025-04-26 16:24:25,913 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2025-04-26 16:24:25,913 INFO L74 IsDeterministic]: Start isDeterministic. Operand 131 states and 272 transitions. [2025-04-26 16:24:25,913 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:25,913 INFO L218 hiAutomatonCegarLoop]: Abstraction has 131 states and 272 transitions. [2025-04-26 16:24:25,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states and 272 transitions. [2025-04-26 16:24:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2025-04-26 16:24:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 131 states have (on average 2.0763358778625953) internal successors, (in total 272), 130 states have internal predecessors, (272), 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 16:24:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 272 transitions. [2025-04-26 16:24:25,923 INFO L240 hiAutomatonCegarLoop]: Abstraction has 131 states and 272 transitions. [2025-04-26 16:24:25,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:24:25,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:24:25,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:24:25,927 INFO L87 Difference]: Start difference. First operand 131 states and 272 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 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 16:24:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:24:25,938 INFO L93 Difference]: Finished difference Result 23 states and 36 transitions. [2025-04-26 16:24:25,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 36 transitions. [2025-04-26 16:24:25,939 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:25,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2025-04-26 16:24:25,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:24:25,939 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:24:25,939 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:24:25,939 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:24:25,939 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:25,939 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:25,939 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 16:24:25,940 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:24:25,940 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:24:25,940 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:24:25,940 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:24:25,940 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:24:25,949 INFO L201 PluginConnector]: Adding new model lock2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:24:25 BoogieIcfgContainer [2025-04-26 16:24:25,949 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:24:25,950 INFO L158 Benchmark]: Toolchain (without parser) took 2709.65ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 85.2MB in the beginning and 32.5MB in the end (delta: 52.8MB). Peak memory consumption was 62.6MB. Max. memory is 8.0GB. [2025-04-26 16:24:25,950 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.84ms. Allocated memory is still 159.4MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:25,950 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.22ms. Allocated memory is still 159.4MB. Free memory was 85.1MB in the beginning and 83.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:25,950 INFO L158 Benchmark]: Boogie Preprocessor took 21.58ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 82.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:24:25,950 INFO L158 Benchmark]: RCFGBuilder took 192.87ms. Allocated memory is still 159.4MB. Free memory was 82.3MB in the beginning and 73.0MB in the end (delta: 9.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:24:25,951 INFO L158 Benchmark]: BuchiAutomizer took 2455.23ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 72.9MB in the beginning and 32.5MB in the end (delta: 40.4MB). Peak memory consumption was 50.0MB. Max. memory is 8.0GB. [2025-04-26 16:24:25,951 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 0.84ms. Allocated memory is still 159.4MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.22ms. Allocated memory is still 159.4MB. Free memory was 85.1MB in the beginning and 83.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 21.58ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 82.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 192.87ms. Allocated memory is still 159.4MB. Free memory was 82.3MB in the beginning and 73.0MB in the end (delta: 9.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 2455.23ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 72.9MB in the beginning and 32.5MB in the end (delta: 40.4MB). Peak memory consumption was 50.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 133 StatesRemovedByMinimization, 3 NontrivialMinimizations. 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 [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 140 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 142 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 160 IncrementalHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 80 mSDtfsCounter, 160 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp77 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 39ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 4 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 4 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:24:25,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...