/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 --buchiautomizer.automaton.type.for.concurrent.programs PARTIAL_ORDER_BA -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/3_thr/seq_loops_part_indep_3.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:49:05,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:49:05,786 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:49:05,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:49:05,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:49:05,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:49:05,815 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:49:05,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:49:05,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:49:05,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:49:05,816 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:49:05,816 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:49:05,816 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:49:05,816 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:49:05,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:49:05,817 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:49:05,817 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:49:05,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:49:05,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:49:05,818 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:49:05,818 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:49:05,818 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> PARTIAL_ORDER_BA [2025-02-17 22:49:06,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:49:06,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:49:06,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:49:06,072 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:49:06,073 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:49:06,075 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/seq_loops_part_indep_3.c.bpl [2025-02-17 22:49:06,075 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/seq_loops_part_indep_3.c.bpl' [2025-02-17 22:49:06,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:49:06,092 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:49:06,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:49:06,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:49:06,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:49:06,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,112 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:49:06,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:49:06,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:49:06,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:49:06,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:49:06,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,121 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:49:06,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:49:06,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:49:06,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:49:06,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/1) ... [2025-02-17 22:49:06,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:06,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:06,158 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) [2025-02-17 22:49:06,161 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 [2025-02-17 22:49:06,182 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:49:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:49:06,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:49:06,183 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:49:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:49:06,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:49:06,184 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:49:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:49:06,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:49:06,184 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:49:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:49:06,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:49:06,185 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:49:06,222 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:49:06,223 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:49:06,304 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:49:06,304 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:49:06,313 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:49:06,313 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:49:06,314 INFO L201 PluginConnector]: Adding new model seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:49:06 BoogieIcfgContainer [2025-02-17 22:49:06,314 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:49:06,316 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:49:06,316 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:49:06,320 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:49:06,320 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:49:06,320 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:49:06" (1/2) ... [2025-02-17 22:49:06,321 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a76dbe6 and model type seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:49:06, skipping insertion in model container [2025-02-17 22:49:06,322 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:49:06,322 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:49:06" (2/2) ... [2025-02-17 22:49:06,322 INFO L363 chiAutomizerObserver]: Analyzing ICFG seq_loops_part_indep_3.c.bpl [2025-02-17 22:49:06,387 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-17 22:49:06,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 37 transitions, 95 flow [2025-02-17 22:49:06,444 INFO L124 PetriNetUnfolderBase]: 6/31 cut-off events. [2025-02-17 22:49:06,447 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-17 22:49:06,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 31 events. 6/31 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-02-17 22:49:06,450 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 37 transitions, 95 flow [2025-02-17 22:49:06,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 31 transitions, 80 flow [2025-02-17 22:49:06,460 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:49:06,977 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:49:06,977 INFO L101 AmpleReduction]: Number of pruned transitions: 212, Number of non-trivial ample sets: 597 [2025-02-17 22:49:06,977 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 636 [2025-02-17 22:49:06,985 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:49:06,986 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:49:06,986 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:49:06,986 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:49:06,986 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:49:06,986 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:49:06,986 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:49:06,986 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:49:06,992 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 456 states, 455 states have (on average 2.8857142857142857) internal successors, (1313), 455 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:07,025 INFO L131 ngComponentsAnalysis]: Automaton has 82 accepting balls. 422 [2025-02-17 22:49:07,025 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:07,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:07,031 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:49:07,031 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:49:07,031 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:49:07,032 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 456 states, 455 states have (on average 2.8857142857142857) internal successors, (1313), 455 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:07,042 INFO L131 ngComponentsAnalysis]: Automaton has 82 accepting balls. 422 [2025-02-17 22:49:07,042 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:07,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:07,043 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:49:07,043 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:49:07,047 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:49:07,047 INFO L754 eck$LassoCheckResult]: Loop: "[84] L23-->L25: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[87] L25-->L26: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[90] L26-->L23: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" [2025-02-17 22:49:07,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:07,052 INFO L85 PathProgramCache]: Analyzing trace with hash 140, now seen corresponding path program 1 times [2025-02-17 22:49:07,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:07,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038603865] [2025-02-17 22:49:07,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:07,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:49:07,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:49:07,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:07,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:07,112 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:07,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:49:07,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:49:07,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:07,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:07,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:07,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash 113302, now seen corresponding path program 1 times [2025-02-17 22:49:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:07,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493038923] [2025-02-17 22:49:07,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:07,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:07,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:07,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:07,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:07,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:07,139 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:07,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:07,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:07,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:07,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:07,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:07,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash 4254251, now seen corresponding path program 1 times [2025-02-17 22:49:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:07,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858404755] [2025-02-17 22:49:07,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:07,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:07,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:07,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:07,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:07,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:07,152 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:07,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:07,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:07,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:07,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:07,158 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:07,198 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:07,200 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:07,200 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:07,200 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:07,200 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:07,200 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:07,200 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:07,200 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:07,200 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:49:07,201 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:07,201 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:07,212 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:07,223 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:07,258 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:07,259 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:07,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:07,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:07,282 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) [2025-02-17 22:49:07,285 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 [2025-02-17 22:49:07,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:07,286 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:07,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:07,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:07,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:07,355 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) [2025-02-17 22:49:07,357 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 [2025-02-17 22:49:07,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:07,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:07,432 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:07,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:07,439 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:07,439 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:07,439 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:07,439 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:07,439 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:07,444 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:07,444 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:07,444 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:07,444 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:49:07,444 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:07,444 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:07,445 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:07,458 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:07,492 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:07,496 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:07,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:07,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:07,504 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) [2025-02-17 22:49:07,507 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 [2025-02-17 22:49:07,508 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 [2025-02-17 22:49:07,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:07,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:07,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:07,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:07,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:07,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:07,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:07,527 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:07,533 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:49:07,534 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:07,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:07,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:07,537 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) [2025-02-17 22:49:07,540 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 [2025-02-17 22:49:07,541 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:07,541 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:07,542 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:07,542 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-02-17 22:49:07,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:07,552 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:07,577 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 [2025-02-17 22:49:07,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:07,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:49:07,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:49:07,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:07,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:07,626 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:07,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:07,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:07,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:07,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:07,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:07,645 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:07,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:07,723 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 [2025-02-17 22:49:07,726 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 456 states, 455 states have (on average 2.8857142857142857) internal successors, (1313), 455 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:07,912 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 456 states, 455 states have (on average 2.8857142857142857) internal successors, (1313), 455 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1175 states and 3512 transitions. Complement of second has 6 states. [2025-02-17 22:49:07,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:07,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2025-02-17 22:49:07,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 71 transitions. Stem has 1 letters. Loop has 3 letters. [2025-02-17 22:49:07,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:07,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 71 transitions. Stem has 4 letters. Loop has 3 letters. [2025-02-17 22:49:07,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:07,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 71 transitions. Stem has 1 letters. Loop has 6 letters. [2025-02-17 22:49:07,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:07,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1175 states and 3512 transitions. [2025-02-17 22:49:07,952 INFO L131 ngComponentsAnalysis]: Automaton has 100 accepting balls. 392 [2025-02-17 22:49:07,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1175 states to 839 states and 2528 transitions. [2025-02-17 22:49:07,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 447 [2025-02-17 22:49:07,978 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 564 [2025-02-17 22:49:07,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 839 states and 2528 transitions. [2025-02-17 22:49:07,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:07,979 INFO L218 hiAutomatonCegarLoop]: Abstraction has 839 states and 2528 transitions. [2025-02-17 22:49:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states and 2528 transitions. [2025-02-17 22:49:08,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 723. [2025-02-17 22:49:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 723 states have (on average 3.0235131396957122) internal successors, (2186), 722 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 2186 transitions. [2025-02-17 22:49:08,041 INFO L240 hiAutomatonCegarLoop]: Abstraction has 723 states and 2186 transitions. [2025-02-17 22:49:08,041 INFO L432 stractBuchiCegarLoop]: Abstraction has 723 states and 2186 transitions. [2025-02-17 22:49:08,041 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:49:08,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 723 states and 2186 transitions. [2025-02-17 22:49:08,045 INFO L131 ngComponentsAnalysis]: Automaton has 100 accepting balls. 392 [2025-02-17 22:49:08,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:08,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:08,046 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:49:08,046 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:49:08,046 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[112] L12-->L37: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:49:08,046 INFO L754 eck$LassoCheckResult]: Loop: "[92] L37-->L39: 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[]" "[95] L39-->L40: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[98] L40-->L37: Formula: (= v_x1_5 (+ v_x1_6 1)) InVars {x1=v_x1_6} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" [2025-02-17 22:49:08,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:08,047 INFO L85 PathProgramCache]: Analyzing trace with hash 4452, now seen corresponding path program 1 times [2025-02-17 22:49:08,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:08,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472812105] [2025-02-17 22:49:08,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:08,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:08,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:08,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:08,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,051 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:08,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:08,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:08,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:08,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:08,057 INFO L85 PathProgramCache]: Analyzing trace with hash 121246, now seen corresponding path program 1 times [2025-02-17 22:49:08,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:08,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481949555] [2025-02-17 22:49:08,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:08,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:08,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:08,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:08,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,062 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:08,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:08,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:08,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:08,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash 132720987, now seen corresponding path program 1 times [2025-02-17 22:49:08,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:08,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581770309] [2025-02-17 22:49:08,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:08,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:08,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:49:08,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:49:08,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,073 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:08,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:49:08,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:49:08,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:08,107 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:08,107 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:08,107 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:08,107 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:08,107 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:08,107 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,107 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:08,107 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:08,107 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:49:08,107 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:08,107 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:08,108 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:08,112 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:08,135 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:08,135 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:08,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,138 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) [2025-02-17 22:49:08,138 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 [2025-02-17 22:49:08,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:08,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:08,155 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 [2025-02-17 22:49:08,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,157 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) [2025-02-17 22:49:08,159 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 [2025-02-17 22:49:08,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:08,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:08,213 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:49:08,213 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x1=0} Honda state: {x1=0} Generalized eigenvectors: [{x1=7}, {x1=2}, {x1=-8}] Lambdas: [1, 5, 1] Nus: [0, 1] [2025-02-17 22:49:08,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:49:08,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,234 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) [2025-02-17 22:49:08,235 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 [2025-02-17 22:49:08,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:08,237 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:08,257 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 [2025-02-17 22:49:08,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,259 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) [2025-02-17 22:49:08,261 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 [2025-02-17 22:49:08,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:08,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:08,324 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:08,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:08,328 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:08,328 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:08,328 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:08,328 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:08,328 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:08,328 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,328 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:08,328 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:08,328 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:49:08,328 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:08,328 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:08,329 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:08,332 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:08,354 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:08,354 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:08,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,373 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) [2025-02-17 22:49:08,374 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 [2025-02-17 22:49:08,375 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 [2025-02-17 22:49:08,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:08,385 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:08,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:08,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:08,385 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:08,386 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:08,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:08,387 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:49:08,392 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 [2025-02-17 22:49:08,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,394 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) [2025-02-17 22:49:08,394 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 [2025-02-17 22:49:08,395 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 [2025-02-17 22:49:08,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:08,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:08,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:08,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:08,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:08,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:08,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:08,408 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:08,410 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:49:08,410 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:08,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,412 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) [2025-02-17 22:49:08,414 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 [2025-02-17 22:49:08,414 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:08,414 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:08,414 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:08,414 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-02-17 22:49:08,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:08,420 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:08,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:08,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:08,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:08,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:08,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:08,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:08,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:08,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:08,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:08,443 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:08,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:08,470 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 [2025-02-17 22:49:08,471 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 723 states and 2186 transitions. cyclomatic complexity: 1587 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:08,586 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 723 states and 2186 transitions. cyclomatic complexity: 1587. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 2006 states and 6295 transitions. Complement of second has 6 states. [2025-02-17 22:49:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-02-17 22:49:08,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 3 letters. [2025-02-17 22:49:08,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:08,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:49:08,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:08,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 78 transitions. Stem has 2 letters. Loop has 6 letters. [2025-02-17 22:49:08,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:08,587 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2006 states and 6295 transitions. [2025-02-17 22:49:08,609 INFO L131 ngComponentsAnalysis]: Automaton has 127 accepting balls. 372 [2025-02-17 22:49:08,625 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2006 states to 1513 states and 4734 transitions. [2025-02-17 22:49:08,625 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 574 [2025-02-17 22:49:08,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 719 [2025-02-17 22:49:08,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1513 states and 4734 transitions. [2025-02-17 22:49:08,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:08,627 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1513 states and 4734 transitions. [2025-02-17 22:49:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states and 4734 transitions. [2025-02-17 22:49:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1370. [2025-02-17 22:49:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1370 states have (on average 3.1554744525547447) internal successors, (4323), 1369 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:08,682 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 [2025-02-17 22:49:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4323 transitions. [2025-02-17 22:49:08,684 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1370 states and 4323 transitions. [2025-02-17 22:49:08,685 INFO L432 stractBuchiCegarLoop]: Abstraction has 1370 states and 4323 transitions. [2025-02-17 22:49:08,685 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:49:08,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1370 states and 4323 transitions. [2025-02-17 22:49:08,692 INFO L131 ngComponentsAnalysis]: Automaton has 127 accepting balls. 372 [2025-02-17 22:49:08,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:08,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:08,692 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:49:08,692 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:08,693 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[83] L23-->L28-1: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" [2025-02-17 22:49:08,693 INFO L754 eck$LassoCheckResult]: Loop: "[86] L28-1-->L30: Formula: (< v_x3_1 v_z_3) InVars {x3=v_x3_1, z=v_z_3} OutVars{x3=v_x3_1, z=v_z_3} AuxVars[] AssignedVars[]" "[89] L30-->L28-1: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:49:08,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:08,693 INFO L85 PathProgramCache]: Analyzing trace with hash 4423, now seen corresponding path program 1 times [2025-02-17 22:49:08,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:08,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219501320] [2025-02-17 22:49:08,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:08,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:08,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:08,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:08,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,697 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:08,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:08,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:08,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:08,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:08,699 INFO L85 PathProgramCache]: Analyzing trace with hash 3716, now seen corresponding path program 1 times [2025-02-17 22:49:08,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:08,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373751034] [2025-02-17 22:49:08,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:08,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:08,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:08,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,704 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:08,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:08,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:08,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,709 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:08,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash 4253258, now seen corresponding path program 1 times [2025-02-17 22:49:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:08,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055799924] [2025-02-17 22:49:08,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:08,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:08,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:08,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:08,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,714 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:08,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:08,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:08,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:08,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:08,729 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:08,729 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:08,729 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:08,729 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:08,729 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:08,729 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,729 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:08,729 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:08,730 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:49:08,730 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:08,730 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:08,730 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:08,750 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:08,750 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:08,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,752 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) [2025-02-17 22:49:08,754 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 [2025-02-17 22:49:08,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:08,755 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:08,771 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 [2025-02-17 22:49:08,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,774 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) [2025-02-17 22:49:08,775 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 [2025-02-17 22:49:08,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:08,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:08,841 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:08,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:08,847 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:08,847 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:08,847 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:08,847 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:08,847 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:08,848 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,848 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:08,848 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:08,848 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:49:08,848 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:08,848 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:08,848 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:08,873 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:08,873 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:08,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,875 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) [2025-02-17 22:49:08,876 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 [2025-02-17 22:49:08,877 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 [2025-02-17 22:49:08,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:08,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:08,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:08,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:08,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:08,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:08,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:08,890 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:08,892 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:49:08,892 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:49:08,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:08,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:08,894 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) [2025-02-17 22:49:08,896 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 [2025-02-17 22:49:08,896 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:08,896 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:08,896 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:08,896 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-02-17 22:49:08,902 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 [2025-02-17 22:49:08,903 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:08,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:08,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:08,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:08,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:08,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:08,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:08,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:08,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:08,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:08,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:08,925 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:08,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:08,936 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 [2025-02-17 22:49:08,936 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1370 states and 4323 transitions. cyclomatic complexity: 3170 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:09,018 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1370 states and 4323 transitions. cyclomatic complexity: 3170. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 2489 states and 8334 transitions. Complement of second has 6 states. [2025-02-17 22:49:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-02-17 22:49:09,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:49:09,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:09,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:49:09,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:09,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:49:09,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:09,020 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2489 states and 8334 transitions. [2025-02-17 22:49:09,041 INFO L131 ngComponentsAnalysis]: Automaton has 117 accepting balls. 312 [2025-02-17 22:49:09,057 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2489 states to 1998 states and 6743 transitions. [2025-02-17 22:49:09,058 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 616 [2025-02-17 22:49:09,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 787 [2025-02-17 22:49:09,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1998 states and 6743 transitions. [2025-02-17 22:49:09,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:09,060 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1998 states and 6743 transitions. [2025-02-17 22:49:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states and 6743 transitions. [2025-02-17 22:49:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1759. [2025-02-17 22:49:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1759 states have (on average 3.442865264354747) internal successors, (6056), 1758 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 6056 transitions. [2025-02-17 22:49:09,101 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1759 states and 6056 transitions. [2025-02-17 22:49:09,101 INFO L432 stractBuchiCegarLoop]: Abstraction has 1759 states and 6056 transitions. [2025-02-17 22:49:09,101 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:49:09,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1759 states and 6056 transitions. [2025-02-17 22:49:09,111 INFO L131 ngComponentsAnalysis]: Automaton has 117 accepting balls. 312 [2025-02-17 22:49:09,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:09,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:09,111 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:49:09,111 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:49:09,112 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[112] L12-->L37: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[115] L13-->L51: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:49:09,112 INFO L754 eck$LassoCheckResult]: Loop: "[100] L51-->L53: Formula: (< v_x5_1 v_z_9) InVars {x5=v_x5_1, z=v_z_9} OutVars{x5=v_x5_1, z=v_z_9} AuxVars[] AssignedVars[]" "[103] L53-->L54: Formula: (= v_x5_2 (+ v_x5_3 1)) InVars {x5=v_x5_3} OutVars{x5=v_x5_2} AuxVars[] AssignedVars[x5]" "[106] L54-->L51: Formula: (= v_x1_7 (+ v_x1_8 1)) InVars {x1=v_x1_8} OutVars{x1=v_x1_7} AuxVars[] AssignedVars[x1]" [2025-02-17 22:49:09,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash 138127, now seen corresponding path program 1 times [2025-02-17 22:49:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:09,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541272312] [2025-02-17 22:49:09,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:09,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:09,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:09,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:09,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,115 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:09,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:09,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:09,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:09,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:09,119 INFO L85 PathProgramCache]: Analyzing trace with hash 129190, now seen corresponding path program 1 times [2025-02-17 22:49:09,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:09,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125048179] [2025-02-17 22:49:09,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:09,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:09,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:09,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,122 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:09,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:09,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:09,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:09,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:09,129 INFO L85 PathProgramCache]: Analyzing trace with hash -179926440, now seen corresponding path program 1 times [2025-02-17 22:49:09,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:09,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830093222] [2025-02-17 22:49:09,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:09,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:09,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:49:09,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:49:09,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,136 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:09,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:49:09,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:49:09,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:09,163 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:09,163 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:09,163 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:09,163 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:09,163 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:09,163 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,163 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:09,163 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:09,163 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:49:09,163 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:09,163 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:09,164 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:09,167 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:09,188 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:09,188 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:09,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,190 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) [2025-02-17 22:49:09,191 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 [2025-02-17 22:49:09,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:09,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:09,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:49:09,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,211 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) [2025-02-17 22:49:09,211 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 [2025-02-17 22:49:09,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:09,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:09,255 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 [2025-02-17 22:49:09,255 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:49:09,256 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x1=0} Honda state: {x1=0} Generalized eigenvectors: [{x1=7}, {x1=2}, {x1=-8}] Lambdas: [1, 5, 1] Nus: [0, 1] [2025-02-17 22:49:09,262 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 [2025-02-17 22:49:09,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,263 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) [2025-02-17 22:49:09,265 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 [2025-02-17 22:49:09,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:09,266 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:09,282 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 [2025-02-17 22:49:09,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,284 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) [2025-02-17 22:49:09,285 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 [2025-02-17 22:49:09,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:09,286 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:09,349 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:09,353 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 [2025-02-17 22:49:09,353 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:09,353 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:09,353 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:09,353 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:09,353 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:09,353 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,353 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:09,353 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:09,353 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:49:09,353 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:09,353 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:09,354 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:09,361 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:09,386 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:09,386 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:09,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,390 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) [2025-02-17 22:49:09,395 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 [2025-02-17 22:49:09,399 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 [2025-02-17 22:49:09,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:09,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:09,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:09,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:09,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:09,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:09,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:09,409 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:49:09,415 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 [2025-02-17 22:49:09,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,418 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) [2025-02-17 22:49:09,419 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 [2025-02-17 22:49:09,421 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 [2025-02-17 22:49:09,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:09,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:09,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:09,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:09,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:09,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:09,432 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:09,435 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:09,438 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:49:09,438 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:09,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,440 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) [2025-02-17 22:49:09,441 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 [2025-02-17 22:49:09,442 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:09,442 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:09,442 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:09,442 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x5) = 1*z - 1*x5 Supporting invariants [] [2025-02-17 22:49:09,447 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 [2025-02-17 22:49:09,448 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:09,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:09,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:09,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:09,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:09,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:09,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:09,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:09,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:09,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:09,474 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:09,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:09,498 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 [2025-02-17 22:49:09,499 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1759 states and 6056 transitions. cyclomatic complexity: 4544 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:09,589 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1759 states and 6056 transitions. cyclomatic complexity: 4544. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 4707 states and 16701 transitions. Complement of second has 6 states. [2025-02-17 22:49:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-17 22:49:09,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 3 letters. Loop has 3 letters. [2025-02-17 22:49:09,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:09,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-17 22:49:09,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:09,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 83 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-17 22:49:09,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:09,591 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4707 states and 16701 transitions. [2025-02-17 22:49:09,627 INFO L131 ngComponentsAnalysis]: Automaton has 94 accepting balls. 204 [2025-02-17 22:49:09,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4707 states to 3353 states and 11791 transitions. [2025-02-17 22:49:09,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 823 [2025-02-17 22:49:09,659 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 998 [2025-02-17 22:49:09,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3353 states and 11791 transitions. [2025-02-17 22:49:09,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:09,659 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3353 states and 11791 transitions. [2025-02-17 22:49:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states and 11791 transitions. [2025-02-17 22:49:09,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3019. [2025-02-17 22:49:09,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 3019 states have (on average 3.530970520039748) internal successors, (10660), 3018 states have internal predecessors, (10660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 10660 transitions. [2025-02-17 22:49:09,756 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3019 states and 10660 transitions. [2025-02-17 22:49:09,756 INFO L432 stractBuchiCegarLoop]: Abstraction has 3019 states and 10660 transitions. [2025-02-17 22:49:09,756 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:49:09,756 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3019 states and 10660 transitions. [2025-02-17 22:49:09,770 INFO L131 ngComponentsAnalysis]: Automaton has 94 accepting balls. 204 [2025-02-17 22:49:09,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:09,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:09,771 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:49:09,771 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:09,771 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[112] L12-->L37: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[91] L37-->L42-1: Formula: (<= v_z_6 v_x2_6) InVars {x2=v_x2_6, z=v_z_6} OutVars{x2=v_x2_6, z=v_z_6} AuxVars[] AssignedVars[]" [2025-02-17 22:49:09,771 INFO L754 eck$LassoCheckResult]: Loop: "[94] L42-1-->L44: Formula: (< v_x4_1 v_z_7) InVars {x4=v_x4_1, z=v_z_7} OutVars{x4=v_x4_1, z=v_z_7} AuxVars[] AssignedVars[]" "[97] L44-->L42-1: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-02-17 22:49:09,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:09,772 INFO L85 PathProgramCache]: Analyzing trace with hash 138103, now seen corresponding path program 1 times [2025-02-17 22:49:09,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:09,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137546342] [2025-02-17 22:49:09,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:09,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:09,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:09,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:09,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,776 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:09,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:09,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:09,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:09,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash 3972, now seen corresponding path program 1 times [2025-02-17 22:49:09,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:09,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352836273] [2025-02-17 22:49:09,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:09,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:09,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:09,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:09,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,783 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:09,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:09,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:09,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:09,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash 132719994, now seen corresponding path program 1 times [2025-02-17 22:49:09,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:09,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606356851] [2025-02-17 22:49:09,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:09,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:09,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:49:09,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:49:09,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,790 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:09,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:49:09,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:49:09,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:09,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:09,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:09,810 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:09,810 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:09,810 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:09,810 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:09,810 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:09,810 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,810 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:09,810 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:09,810 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:49:09,811 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:09,811 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:09,811 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:09,828 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:09,828 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:09,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,831 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2025-02-17 22:49:09,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-17 22:49:09,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:09,834 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:09,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:09,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,854 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2025-02-17 22:49:09,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-17 22:49:09,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:09,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:09,926 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:09,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:09,932 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:09,932 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:09,932 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:09,932 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:09,932 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:09,932 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,932 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:09,932 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:09,932 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:49:09,932 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:09,932 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:09,933 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:09,948 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:09,948 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:09,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,977 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2025-02-17 22:49:09,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-17 22:49:09,982 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 [2025-02-17 22:49:09,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:09,992 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:09,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:09,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:09,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:09,992 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:09,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:09,994 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:09,996 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:49:09,996 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:49:09,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:09,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:09,998 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2025-02-17 22:49:10,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-02-17 22:49:10,001 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:10,001 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:10,001 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:10,001 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:49:10,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-17 22:49:10,008 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:10,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:10,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:49:10,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:49:10,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:10,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:10,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:10,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:10,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:10,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:10,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:10,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:10,046 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:10,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:10,061 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 [2025-02-17 22:49:10,061 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3019 states and 10660 transitions. cyclomatic complexity: 7988 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:10,166 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3019 states and 10660 transitions. cyclomatic complexity: 7988. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 4761 states and 17220 transitions. Complement of second has 6 states. [2025-02-17 22:49:10,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:10,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-02-17 22:49:10,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:49:10,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:10,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:49:10,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:10,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 85 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:49:10,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:10,170 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4761 states and 17220 transitions. [2025-02-17 22:49:10,205 INFO L131 ngComponentsAnalysis]: Automaton has 60 accepting balls. 120 [2025-02-17 22:49:10,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4761 states to 3374 states and 12299 transitions. [2025-02-17 22:49:10,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 760 [2025-02-17 22:49:10,238 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 847 [2025-02-17 22:49:10,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3374 states and 12299 transitions. [2025-02-17 22:49:10,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:10,239 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3374 states and 12299 transitions. [2025-02-17 22:49:10,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states and 12299 transitions. [2025-02-17 22:49:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3126. [2025-02-17 22:49:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3126 states, 3126 states have (on average 3.6615483045425465) internal successors, (11446), 3125 states have internal predecessors, (11446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 11446 transitions. [2025-02-17 22:49:10,322 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3126 states and 11446 transitions. [2025-02-17 22:49:10,322 INFO L432 stractBuchiCegarLoop]: Abstraction has 3126 states and 11446 transitions. [2025-02-17 22:49:10,322 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-17 22:49:10,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3126 states and 11446 transitions. [2025-02-17 22:49:10,338 INFO L131 ngComponentsAnalysis]: Automaton has 60 accepting balls. 120 [2025-02-17 22:49:10,338 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:10,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:10,338 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:49:10,338 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:10,339 INFO L752 eck$LassoCheckResult]: Stem: "[109] $Ultimate##0-->L23: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[112] L12-->L37: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[115] L13-->L51: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[99] L51-->L56-1: Formula: (<= v_z_10 v_x5_4) InVars {x5=v_x5_4, z=v_z_10} OutVars{x5=v_x5_4, z=v_z_10} AuxVars[] AssignedVars[]" [2025-02-17 22:49:10,339 INFO L754 eck$LassoCheckResult]: Loop: "[102] L56-1-->L58: Formula: (< v_x6_1 v_z_11) InVars {x6=v_x6_1, z=v_z_11} OutVars{x6=v_x6_1, z=v_z_11} AuxVars[] AssignedVars[]" "[105] L58-->L56-1: Formula: (= v_x6_2 (+ v_x6_3 1)) InVars {x6=v_x6_3} OutVars{x6=v_x6_2} AuxVars[] AssignedVars[x6]" [2025-02-17 22:49:10,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:10,339 INFO L85 PathProgramCache]: Analyzing trace with hash 4282036, now seen corresponding path program 1 times [2025-02-17 22:49:10,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:10,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517419853] [2025-02-17 22:49:10,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:10,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:10,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:10,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:10,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:10,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:10,343 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:10,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:10,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:10,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:10,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:10,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:10,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash 4228, now seen corresponding path program 1 times [2025-02-17 22:49:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:10,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665405925] [2025-02-17 22:49:10,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:10,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:10,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:10,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:10,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:10,352 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:10,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:10,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:10,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:10,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:10,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:10,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:10,354 INFO L85 PathProgramCache]: Analyzing trace with hash -179927433, now seen corresponding path program 1 times [2025-02-17 22:49:10,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:10,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487249714] [2025-02-17 22:49:10,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:10,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:10,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:49:10,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:49:10,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:10,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:10,358 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:10,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:49:10,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:49:10,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:10,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:10,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:10,379 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:10,379 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:10,379 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:10,379 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:10,379 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:10,379 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:10,379 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:10,379 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:10,379 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration6_Loop [2025-02-17 22:49:10,379 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:10,379 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:10,380 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:10,396 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:10,396 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:10,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:10,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:10,403 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2025-02-17 22:49:10,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-02-17 22:49:10,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:10,404 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:10,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-02-17 22:49:10,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:10,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:10,424 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2025-02-17 22:49:10,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-02-17 22:49:10,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:10,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:10,497 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:10,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:10,502 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:10,502 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:10,502 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:10,502 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:10,502 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:10,502 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:10,502 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:10,502 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:10,502 INFO L132 ssoRankerPreferences]: Filename of dumped script: seq_loops_part_indep_3.c.bpl_petrified1_Iteration6_Loop [2025-02-17 22:49:10,502 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:10,502 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:10,503 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:10,524 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:10,524 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:10,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:10,526 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2025-02-17 22:49:10,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-02-17 22:49:10,529 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 [2025-02-17 22:49:10,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:10,540 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:10,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:10,540 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:10,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:10,542 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:10,542 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:10,543 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:10,546 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:49:10,546 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:49:10,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:10,548 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2025-02-17 22:49:10,550 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:10,550 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:10,550 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:10,550 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x6) = 1*z - 1*x6 Supporting invariants [] [2025-02-17 22:49:10,572 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Exception during sending of exit command (exit): Broken pipe [2025-02-17 22:49:10,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:10,574 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:10,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-02-17 22:49:10,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2025-02-17 22:49:10,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:10,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:49:10,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:49:10,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:10,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:10,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:10,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:10,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:10,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:10,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:10,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:10,608 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:10,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:10,622 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 [2025-02-17 22:49:10,622 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3126 states and 11446 transitions. cyclomatic complexity: 8655 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:10,699 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3126 states and 11446 transitions. cyclomatic complexity: 8655. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 4671 states and 16782 transitions. Complement of second has 6 states. [2025-02-17 22:49:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-02-17 22:49:10,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:49:10,701 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:10,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:49:10,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:10,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:49:10,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:10,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4671 states and 16782 transitions. [2025-02-17 22:49:10,731 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:49:10,731 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4671 states to 0 states and 0 transitions. [2025-02-17 22:49:10,731 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:49:10,731 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:49:10,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:49:10,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:49:10,731 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:10,731 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:10,731 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:10,731 INFO L338 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-02-17 22:49:10,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:49:10,731 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:49:10,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:49:10,737 INFO L201 PluginConnector]: Adding new model seq_loops_part_indep_3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:49:10 BoogieIcfgContainer [2025-02-17 22:49:10,737 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:49:10,737 INFO L158 Benchmark]: Toolchain (without parser) took 4645.50ms. Allocated memory was 159.4MB in the beginning and 213.9MB in the end (delta: 54.5MB). Free memory was 85.3MB in the beginning and 76.9MB in the end (delta: 8.5MB). Peak memory consumption was 68.4MB. Max. memory is 8.0GB. [2025-02-17 22:49:10,737 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.25ms. Allocated memory is still 159.4MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:10,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.68ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 84.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:10,738 INFO L158 Benchmark]: Boogie Preprocessor took 14.65ms. Allocated memory is still 159.4MB. Free memory was 84.2MB in the beginning and 83.5MB in the end (delta: 676.2kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:10,738 INFO L158 Benchmark]: RCFGBuilder took 184.80ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 73.2MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:49:10,738 INFO L158 Benchmark]: BuchiAutomizer took 4421.17ms. Allocated memory was 159.4MB in the beginning and 213.9MB in the end (delta: 54.5MB). Free memory was 73.2MB in the beginning and 76.9MB in the end (delta: -3.6MB). Peak memory consumption was 55.8MB. Max. memory is 8.0GB. [2025-02-17 22:49:10,739 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 0.25ms. Allocated memory is still 159.4MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.68ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 84.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 14.65ms. Allocated memory is still 159.4MB. Free memory was 84.2MB in the beginning and 83.5MB in the end (delta: 676.2kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 184.80ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 73.2MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 4421.17ms. Allocated memory was 159.4MB in the beginning and 213.9MB in the end (delta: 54.5MB). Free memory was 73.2MB in the beginning and 76.9MB in the end (delta: -3.6MB). Peak memory consumption was 55.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 6 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 -1 * x5 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 4 locations. One deterministic module has affine ranking function z + -1 * x6 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 7 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 1080 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [6, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 342 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 336 mSDsluCounter, 345 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 159 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 402 IncrementalHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 186 mSDtfsCounter, 402 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 45ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.5s InitialAbstraction: Time to compute Ample Reduction [ms]: 565, Trivial Ample Sets caused by loops: 636, Number of non-trivial ample sets: 597, Number of pruned transitions: 212, Number of transitions in reduction automaton: 1313, Number of states in reduction automaton: 456, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:49:10,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...