/root/.sdkman/candidates/java/current/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_PETRI_NET --buchiautomizer.use.buchi.petri.net.intersection.optimizations true --buchiautomizer.use.automata.for.buchi.petri.net.emptiness.check true -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-?-9ecb849-m [2024-02-10 00:24:46,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-10 00:24:46,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2024-02-10 00:24:46,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-10 00:24:46,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-10 00:24:46,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.Only consider context switches at boundaries of atomic blocks [2024-02-10 00:24:47,007 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-10 00:24:47,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-10 00:24:47,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-10 00:24:47,013 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-10 00:24:47,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-10 00:24:47,014 INFO L153 SettingsManager]: * Use SBE=true [2024-02-10 00:24:47,014 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-02-10 00:24:47,017 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-02-10 00:24:47,017 INFO L153 SettingsManager]: * Use old map elimination=false [2024-02-10 00:24:47,017 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-02-10 00:24:47,017 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-02-10 00:24:47,018 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-02-10 00:24:47,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-10 00:24:47,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-02-10 00:24:47,019 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-10 00:24:47,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-10 00:24:47,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-10 00:24:47,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-10 00:24:47,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-02-10 00:24:47,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-02-10 00:24:47,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-02-10 00:24:47,038 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-02-10 00:24:47,038 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-10 00:24:47,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-10 00:24:47,039 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-02-10 00:24:47,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-10 00:24:47,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-10 00:24:47,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-10 00:24:47,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-10 00:24:47,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-10 00:24:47,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-10 00:24:47,041 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-02-10 00:24:47,041 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Use Buchi Petri Net Intersection Optimizations -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Use automata for Buchi Petri Net emptiness check -> true [2024-02-10 00:24:47,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-10 00:24:47,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-10 00:24:47,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-10 00:24:47,399 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2024-02-10 00:24:47,402 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2024-02-10 00:24:47,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl [2024-02-10 00:24:47,405 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/incr-decr-zero.bpl' [2024-02-10 00:24:47,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-10 00:24:47,432 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-02-10 00:24:47,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-10 00:24:47,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-10 00:24:47,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-10 00:24:47,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,465 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-02-10 00:24:47,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-10 00:24:47,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-10 00:24:47,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-10 00:24:47,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-10 00:24:47,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-10 00:24:47,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-10 00:24:47,536 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-10 00:24:47,536 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-10 00:24:47,537 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/1) ... [2024-02-10 00:24:47,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:47,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:47,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:47,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-02-10 00:24:47,625 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2024-02-10 00:24:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-10 00:24:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-10 00:24:47,626 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2024-02-10 00:24:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-10 00:24:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-10 00:24:47,626 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2024-02-10 00:24:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-10 00:24:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-10 00:24:47,627 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-10 00:24:47,674 INFO L236 CfgBuilder]: Building ICFG [2024-02-10 00:24:47,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-10 00:24:47,763 INFO L277 CfgBuilder]: Performing block encoding [2024-02-10 00:24:47,769 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-10 00:24:47,770 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-10 00:24:47,772 INFO L201 PluginConnector]: Adding new model incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 12:24:47 BoogieIcfgContainer [2024-02-10 00:24:47,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-10 00:24:47,773 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-02-10 00:24:47,773 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-02-10 00:24:47,777 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-02-10 00:24:47,778 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-10 00:24:47,778 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:47" (1/2) ... [2024-02-10 00:24:47,780 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31e02883 and model type incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.02 12:24:47, skipping insertion in model container [2024-02-10 00:24:47,780 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-10 00:24:47,780 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 12:24:47" (2/2) ... [2024-02-10 00:24:47,781 INFO L332 chiAutomizerObserver]: Analyzing ICFG incr-decr-zero.bpl [2024-02-10 00:24:47,835 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-10 00:24:47,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 62 flow [2024-02-10 00:24:47,882 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-02-10 00:24:47,883 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-10 00:24:47,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-02-10 00:24:47,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 62 flow [2024-02-10 00:24:47,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-02-10 00:24:47,897 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2024-02-10 00:24:47,897 INFO L304 stractBuchiCegarLoop]: Hoare is false [2024-02-10 00:24:47,897 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-02-10 00:24:47,897 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-02-10 00:24:47,897 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-02-10 00:24:47,897 INFO L308 stractBuchiCegarLoop]: Difference is false [2024-02-10 00:24:47,897 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-02-10 00:24:47,898 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2024-02-10 00:24:47,898 INFO L139 chiPetriNetCegarLoop]: use automaton for emptiness check [2024-02-10 00:24:47,899 INFO L128 iNet2FiniteAutomaton]: Start buchiPetriNet2FiniteAutomaton. Operand has 25 places, 20 transitions, 52 flow [2024-02-10 00:24:47,912 INFO L151 iNet2FiniteAutomaton]: Finished buchiPetriNet2FiniteAutomaton. Result has 54 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 53 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-10 00:24:47,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 54 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 53 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-10 00:24:47,932 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 33 [2024-02-10 00:24:47,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-10 00:24:47,933 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-10 00:24:47,936 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-02-10 00:24:47,937 INFO L139 chiPetriNetCegarLoop]: use automaton for emptiness check [2024-02-10 00:24:47,937 INFO L128 iNet2FiniteAutomaton]: Start buchiPetriNet2FiniteAutomaton. Operand has 25 places, 20 transitions, 52 flow [2024-02-10 00:24:47,942 INFO L151 iNet2FiniteAutomaton]: Finished buchiPetriNet2FiniteAutomaton. Result has 54 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 53 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-10 00:24:47,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 54 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 53 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-10 00:24:47,946 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 33 [2024-02-10 00:24:47,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-10 00:24:47,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-10 00:24:47,951 INFO L748 eck$LassoCheckResult]: Stem: Black: 140#[$Ultimate##0]don't care [41] $Ultimate##0-->L16: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x] 143#[L16]don't care [62] L16-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_12} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_i] 145#[$Ultimate##0, L16-1]don't care [48] $Ultimate##0-->L30-1: Formula: (= v_thread1Thread1of1ForFork0_i_1 0) InVars {} OutVars{thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_1} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_i] 149#[L30-1, L16-1]don't care [2024-02-10 00:24:47,951 INFO L750 eck$LassoCheckResult]: Loop: 149#[L30-1, L16-1]don't care [50] L30-1-->L31: Formula: (< v_thread1Thread1of1ForFork0_i_5 v_N_1) InVars {thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_5, N=v_N_1} OutVars{thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_5, N=v_N_1} AuxVars[] AssignedVars[] 157#[L31, L16-1]don't care [52] L31-->L32: Formula: (= v_x_1 (+ v_x_2 1)) InVars {x=v_x_2} OutVars{x=v_x_1} AuxVars[] AssignedVars[x] 171#[L32, L16-1]don't care [53] L32-->L30-1: Formula: (= (+ v_thread1Thread1of1ForFork0_i_7 1) v_thread1Thread1of1ForFork0_i_8) InVars {thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_7} OutVars{thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_8} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_i] 149#[L30-1, L16-1]don't care [2024-02-10 00:24:47,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-10 00:24:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash 71162, now seen corresponding path program 1 times [2024-02-10 00:24:47,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-10 00:24:47,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801000330] [2024-02-10 00:24:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-10 00:24:47,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-10 00:24:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:48,031 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-10 00:24:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:48,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-10 00:24:48,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-10 00:24:48,053 INFO L85 PathProgramCache]: Analyzing trace with hash 79506, now seen corresponding path program 1 times [2024-02-10 00:24:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-10 00:24:48,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610538232] [2024-02-10 00:24:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-10 00:24:48,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-10 00:24:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:48,067 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-10 00:24:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:48,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-10 00:24:48,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-10 00:24:48,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2120036857, now seen corresponding path program 1 times [2024-02-10 00:24:48,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-10 00:24:48,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454697383] [2024-02-10 00:24:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-10 00:24:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-10 00:24:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:48,081 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-10 00:24:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:48,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-10 00:24:48,154 INFO L210 LassoAnalysis]: Preferences: [2024-02-10 00:24:48,155 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-10 00:24:48,155 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-10 00:24:48,155 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-10 00:24:48,155 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2024-02-10 00:24:48,156 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:48,156 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-10 00:24:48,156 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-10 00:24:48,156 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration1_Loop [2024-02-10 00:24:48,156 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-10 00:24:48,156 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-10 00:24:48,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-10 00:24:48,186 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-10 00:24:48,267 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-10 00:24:48,267 INFO L404 LassoAnalysis]: Checking for nontermination... [2024-02-10 00:24:48,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:48,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:48,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:48,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-10 00:24:48,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-10 00:24:48,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-02-10 00:24:48,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:48,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:48,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:48,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:48,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-10 00:24:48,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-10 00:24:48,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-02-10 00:24:48,390 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2024-02-10 00:24:48,391 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x=0} Honda state: {x=0} Generalized eigenvectors: [{x=2}, {x=5}, {x=-6}] Lambdas: [1, 1, 1] Nus: [0, 0] [2024-02-10 00:24:48,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:48,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:48,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:48,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:48,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-10 00:24:48,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-10 00:24:48,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-02-10 00:24:48,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:48,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:48,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:48,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:48,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-10 00:24:48,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-10 00:24:48,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-02-10 00:24:48,594 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-02-10 00:24:48,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:48,600 INFO L210 LassoAnalysis]: Preferences: [2024-02-10 00:24:48,601 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-10 00:24:48,601 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-10 00:24:48,601 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-10 00:24:48,601 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2024-02-10 00:24:48,601 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:48,601 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-10 00:24:48,601 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-10 00:24:48,601 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration1_Loop [2024-02-10 00:24:48,601 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-10 00:24:48,601 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-10 00:24:48,602 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-10 00:24:48,609 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-10 00:24:48,646 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-10 00:24:48,650 INFO L490 LassoAnalysis]: Using template 'affine'. [2024-02-10 00:24:48,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:48,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:48,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:48,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-02-10 00:24:48,688 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 [2024-02-10 00:24:48,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-02-10 00:24:48,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-02-10 00:24:48,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-02-10 00:24:48,697 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-02-10 00:24:48,697 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-02-10 00:24:48,701 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-02-10 00:24:48,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-02-10 00:24:48,717 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-02-10 00:24:48,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:48,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:48,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:48,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:48,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-02-10 00:24:48,760 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 [2024-02-10 00:24:48,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-02-10 00:24:48,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-02-10 00:24:48,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-02-10 00:24:48,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-02-10 00:24:48,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-02-10 00:24:48,769 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-02-10 00:24:48,769 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-02-10 00:24:48,788 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-02-10 00:24:48,792 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-02-10 00:24:48,793 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-02-10 00:24:48,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:48,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:48,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:48,811 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-02-10 00:24:48,811 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-02-10 00:24:48,811 INFO L513 LassoAnalysis]: Proved termination. [2024-02-10 00:24:48,812 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(thread1Thread1of1ForFork0_i, N) = -1*thread1Thread1of1ForFork0_i + 1*N Supporting invariants [] [2024-02-10 00:24:48,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-02-10 00:24:48,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-02-10 00:24:48,819 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-02-10 00:24:48,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-10 00:24:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-10 00:24:48,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2024-02-10 00:24:48,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-10 00:24:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-10 00:24:48,859 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-10 00:24:48,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-10 00:24:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-10 00:24:48,905 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 [2024-02-10 00:24:48,907 INFO L162 BuchiComplementFKV]: Start buchiComplementFKV with optimization HEIMAT2. 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) [2024-02-10 00:24:48,992 INFO L171 BuchiComplementFKV]: Finished buchiComplementFKV with optimization HEIMAT2. 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 9 states and 296 transitions.6 powerset states3 rank states. The highest rank that occured is 1 [2024-02-10 00:24:48,993 INFO L89 BuchiIntersect]: Starting Intersection [2024-02-10 00:24:48,993 INFO L112 BuchiIntersect]: use intersection optimizations [2024-02-10 00:24:48,994 INFO L63 sectAllAcceptingtNet]: Starting Intersection with all accepting Petri Net [2024-02-10 00:24:49,009 INFO L72 sectAllAcceptingtNet]: Exiting Intersection with all accepting Petri Net [2024-02-10 00:24:49,009 INFO L99 BuchiIntersect]: Exiting Intersection [2024-02-10 00:24:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-02-10 00:24:49,015 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) [2024-02-10 00:24:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-02-10 00:24:49,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 114 transitions. Stem has 3 letters. Loop has 3 letters. [2024-02-10 00:24:49,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-10 00:24:49,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 114 transitions. Stem has 6 letters. Loop has 3 letters. [2024-02-10 00:24:49,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-10 00:24:49,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 114 transitions. Stem has 3 letters. Loop has 6 letters. [2024-02-10 00:24:49,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-10 00:24:49,018 INFO L428 stractBuchiCegarLoop]: Abstraction has has 34 places, 244 transitions, 1117 flow [2024-02-10 00:24:49,019 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-02-10 00:24:49,019 INFO L139 chiPetriNetCegarLoop]: use automaton for emptiness check [2024-02-10 00:24:49,019 INFO L128 iNet2FiniteAutomaton]: Start buchiPetriNet2FiniteAutomaton. Operand has 34 places, 244 transitions, 1117 flow [2024-02-10 00:24:49,031 INFO L151 iNet2FiniteAutomaton]: Finished buchiPetriNet2FiniteAutomaton. Result has 112 states, 106 states have (on average 2.9245283018867925) internal successors, (310), 111 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-10 00:24:49,032 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 112 states, 106 states have (on average 2.9245283018867925) internal successors, (310), 111 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-10 00:24:49,037 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2024-02-10 00:24:49,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-10 00:24:49,038 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-10 00:24:49,040 INFO L748 eck$LassoCheckResult]: Stem: Black: 292#[$Ultimate##0]don't care [41] $Ultimate##0-->L16: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x] 298#[L16]don't care [62] L16-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_i=v_thread1Thread1of1ForFork0_i_12} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_i] 303#[$Ultimate##0, L16-1]don't care [65] L16-1-->$Ultimate##0: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_12, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j, thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 308#[$Ultimate##0, L17, $Ultimate##0]don't care [54] $Ultimate##0-->L42-1: Formula: (= v_thread2Thread1of1ForFork1_j_1 0) InVars {} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_1} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j] 316#[L17, $Ultimate##0, L42-1]don't care [2024-02-10 00:24:49,040 INFO L750 eck$LassoCheckResult]: Loop: 316#[L17, $Ultimate##0, L42-1]don't care [56] L42-1-->L43: Formula: (< v_thread2Thread1of1ForFork1_j_5 v_N_4) InVars {thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_5, N=v_N_4} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_5, N=v_N_4} AuxVars[] AssignedVars[] 347#[L17, $Ultimate##0, L43]don't care [58] L43-->L44: Formula: (= v_x_4 (+ v_x_3 1)) InVars {x=v_x_4} OutVars{x=v_x_3} AuxVars[] AssignedVars[x] 405#[L44, L17, $Ultimate##0]don't care [59] L44-->L42-1: Formula: (= (+ v_thread2Thread1of1ForFork1_j_7 1) v_thread2Thread1of1ForFork1_j_8) InVars {thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_7} OutVars{thread2Thread1of1ForFork1_j=v_thread2Thread1of1ForFork1_j_8} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_j] 316#[L17, $Ultimate##0, L42-1]don't care [2024-02-10 00:24:49,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-10 00:24:49,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2206603, now seen corresponding path program 1 times [2024-02-10 00:24:49,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-10 00:24:49,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540931511] [2024-02-10 00:24:49,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-10 00:24:49,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-10 00:24:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:49,045 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-10 00:24:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:49,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-10 00:24:49,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-10 00:24:49,048 INFO L85 PathProgramCache]: Analyzing trace with hash 85464, now seen corresponding path program 1 times [2024-02-10 00:24:49,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-10 00:24:49,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408886885] [2024-02-10 00:24:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-10 00:24:49,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-10 00:24:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:49,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-10 00:24:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:49,055 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-10 00:24:49,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-10 00:24:49,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1312456206, now seen corresponding path program 1 times [2024-02-10 00:24:49,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-10 00:24:49,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617050454] [2024-02-10 00:24:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-10 00:24:49,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-10 00:24:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:49,062 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-10 00:24:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-10 00:24:49,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-10 00:24:49,092 INFO L210 LassoAnalysis]: Preferences: [2024-02-10 00:24:49,092 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-10 00:24:49,092 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-10 00:24:49,092 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-10 00:24:49,093 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2024-02-10 00:24:49,093 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:49,093 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-10 00:24:49,093 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-10 00:24:49,093 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration2_Loop [2024-02-10 00:24:49,093 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-10 00:24:49,093 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-10 00:24:49,094 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-10 00:24:49,097 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-10 00:24:49,122 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-10 00:24:49,122 INFO L404 LassoAnalysis]: Checking for nontermination... [2024-02-10 00:24:49,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:49,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:49,124 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:49,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-10 00:24:49,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-10 00:24:49,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-02-10 00:24:49,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:49,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:49,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:49,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:49,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-10 00:24:49,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-10 00:24:49,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-02-10 00:24:49,181 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2024-02-10 00:24:49,181 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x=0} Honda state: {x=0} Generalized eigenvectors: [{x=1}, {x=3}, {x=-5}] Lambdas: [1, 1, 1] Nus: [0, 0] [2024-02-10 00:24:49,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:49,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:49,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:49,187 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:49,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-10 00:24:49,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-10 00:24:49,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-02-10 00:24:49,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:49,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:49,218 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:49,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-10 00:24:49,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-10 00:24:49,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-02-10 00:24:49,337 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-02-10 00:24:49,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:49,344 INFO L210 LassoAnalysis]: Preferences: [2024-02-10 00:24:49,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-10 00:24:49,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-10 00:24:49,344 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-10 00:24:49,344 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2024-02-10 00:24:49,344 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:49,345 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-10 00:24:49,345 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-10 00:24:49,345 INFO L133 ssoRankerPreferences]: Filename of dumped script: incr-decr-zero.bpl_BEv2_Iteration2_Loop [2024-02-10 00:24:49,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-10 00:24:49,345 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-10 00:24:49,346 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-10 00:24:49,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-10 00:24:49,374 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-10 00:24:49,375 INFO L490 LassoAnalysis]: Using template 'affine'. [2024-02-10 00:24:49,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:49,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:49,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:49,382 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 [2024-02-10 00:24:49,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-02-10 00:24:49,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-02-10 00:24:49,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-02-10 00:24:49,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-02-10 00:24:49,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-02-10 00:24:49,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-02-10 00:24:49,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-02-10 00:24:49,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-02-10 00:24:49,404 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-02-10 00:24:49,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:49,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:49,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:49,410 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:49,415 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 [2024-02-10 00:24:49,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-02-10 00:24:49,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-02-10 00:24:49,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-02-10 00:24:49,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-02-10 00:24:49,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-02-10 00:24:49,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-02-10 00:24:49,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-02-10 00:24:49,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-02-10 00:24:49,440 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-02-10 00:24:49,443 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-02-10 00:24:49,443 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-02-10 00:24:49,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:49,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:49,472 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:49,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-02-10 00:24:49,474 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-02-10 00:24:49,474 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-02-10 00:24:49,474 INFO L513 LassoAnalysis]: Proved termination. [2024-02-10 00:24:49,474 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(thread2Thread1of1ForFork1_j, N) = -1*thread2Thread1of1ForFork1_j + 1*N Supporting invariants [] [2024-02-10 00:24:49,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:49,479 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-02-10 00:24:49,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-10 00:24:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-10 00:24:49,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2024-02-10 00:24:49,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-10 00:24:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-10 00:24:49,515 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-10 00:24:49,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-10 00:24:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-10 00:24:49,533 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 [2024-02-10 00:24:49,533 INFO L162 BuchiComplementFKV]: Start buchiComplementFKV with optimization HEIMAT2. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-10 00:24:49,586 INFO L171 BuchiComplementFKV]: Finished buchiComplementFKV with optimization HEIMAT2. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 9 states and 296 transitions.6 powerset states3 rank states. The highest rank that occured is 1 [2024-02-10 00:24:49,586 INFO L89 BuchiIntersect]: Starting Intersection [2024-02-10 00:24:49,586 INFO L112 BuchiIntersect]: use intersection optimizations [2024-02-10 00:24:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states and 296 transitions. [2024-02-10 00:24:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2024-02-10 00:24:49,592 INFO L79 tersectStemOptimized]: Starting StemOptimized Intersection [2024-02-10 00:24:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states and 296 transitions. [2024-02-10 00:24:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2024-02-10 00:24:49,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:49,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-02-10 00:24:49,722 INFO L90 tersectStemOptimized]: Exiting StemOptimized Intersection [2024-02-10 00:24:49,722 INFO L99 BuchiIntersect]: Exiting Intersection [2024-02-10 00:24:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-02-10 00:24:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-10 00:24:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-02-10 00:24:49,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 114 transitions. Stem has 4 letters. Loop has 3 letters. [2024-02-10 00:24:49,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-10 00:24:49,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 114 transitions. Stem has 7 letters. Loop has 3 letters. [2024-02-10 00:24:49,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-10 00:24:49,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 114 transitions. Stem has 4 letters. Loop has 6 letters. [2024-02-10 00:24:49,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-10 00:24:49,724 INFO L428 stractBuchiCegarLoop]: Abstraction has has 47 places, 3849 transitions, 25218 flow [2024-02-10 00:24:49,724 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-02-10 00:24:49,725 INFO L139 chiPetriNetCegarLoop]: use automaton for emptiness check [2024-02-10 00:24:49,725 INFO L128 iNet2FiniteAutomaton]: Start buchiPetriNet2FiniteAutomaton. Operand has 47 places, 3849 transitions, 25218 flow [2024-02-10 00:24:49,894 INFO L151 iNet2FiniteAutomaton]: Finished buchiPetriNet2FiniteAutomaton. Result has 276 states, 246 states have (on average 3.894308943089431) internal successors, (958), 275 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-10 00:24:49,894 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 276 states, 246 states have (on average 3.894308943089431) internal successors, (958), 275 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-10 00:24:49,911 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-02-10 00:24:49,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-02-10 00:24:49,922 INFO L201 PluginConnector]: Adding new model incr-decr-zero.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.02 12:24:49 BoogieIcfgContainer [2024-02-10 00:24:49,922 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-02-10 00:24:49,923 INFO L158 Benchmark]: Toolchain (without parser) took 2490.04ms. Allocated memory was 229.6MB in the beginning and 367.0MB in the end (delta: 137.4MB). Free memory was 194.7MB in the beginning and 319.0MB in the end (delta: -124.4MB). Peak memory consumption was 136.7MB. Max. memory is 8.0GB. [2024-02-10 00:24:49,924 INFO L158 Benchmark]: Boogie PL CUP Parser took 1.06ms. Allocated memory is still 229.6MB. Free memory is still 195.6MB. There was no memory consumed. Max. memory is 8.0GB. [2024-02-10 00:24:49,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.39ms. Allocated memory is still 229.6MB. Free memory was 194.6MB in the beginning and 193.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-02-10 00:24:49,924 INFO L158 Benchmark]: Boogie Preprocessor took 66.78ms. Allocated memory is still 229.6MB. Free memory was 193.0MB in the beginning and 204.5MB in the end (delta: -11.5MB). Peak memory consumption was 4.1MB. Max. memory is 8.0GB. [2024-02-10 00:24:49,926 INFO L158 Benchmark]: RCFGBuilder took 235.99ms. Allocated memory is still 229.6MB. Free memory was 204.4MB in the beginning and 195.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2024-02-10 00:24:49,926 INFO L158 Benchmark]: BuchiAutomizer took 2149.12ms. Allocated memory was 229.6MB in the beginning and 367.0MB in the end (delta: 137.4MB). Free memory was 195.3MB in the beginning and 319.0MB in the end (delta: -123.8MB). Peak memory consumption was 137.8MB. Max. memory is 8.0GB. [2024-02-10 00:24:49,930 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 1.06ms. Allocated memory is still 229.6MB. Free memory is still 195.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.39ms. Allocated memory is still 229.6MB. Free memory was 194.6MB in the beginning and 193.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.78ms. Allocated memory is still 229.6MB. Free memory was 193.0MB in the beginning and 204.5MB in the end (delta: -11.5MB). Peak memory consumption was 4.1MB. Max. memory is 8.0GB. * RCFGBuilder took 235.99ms. Allocated memory is still 229.6MB. Free memory was 204.4MB in the beginning and 195.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2149.12ms. Allocated memory was 229.6MB in the beginning and 367.0MB in the end (delta: 137.4MB). Free memory was 195.3MB in the beginning and 319.0MB in the end (delta: -123.8MB). Peak memory consumption was 137.8MB. 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 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + N and consists of 5 locations. One deterministic module has affine ranking function N + -1 * j and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 1. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 184 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 100 mSDtfsCounter, 108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 66ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-02-10 00:24:49,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...