/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_AUTOMATON -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/fibonacci.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:12:48,379 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:12:48,439 INFO L100 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2023-10-12 17:12:48,464 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:12:48,464 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:12:48,465 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:12:48,465 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:12:48,466 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:12:48,466 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:12:48,469 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:12:48,469 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:12:48,469 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:12:48,469 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:12:48,470 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:12:48,471 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:12:48,471 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:12:48,471 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:12:48,471 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:12:48,471 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:12:48,472 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:12:48,472 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:12:48,472 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:12:48,473 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:12:48,473 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:12:48,473 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:12:48,473 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:12:48,473 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:12:48,474 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:12:48,474 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:12:48,474 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:12:48,475 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:12:48,475 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:12:48,475 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:12:48,476 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:12:48,476 INFO L137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:12:48,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:12:48,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:12:48,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:12:48,679 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:12:48,680 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:12:48,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/fibonacci.wvr.bpl [2023-10-12 17:12:48,681 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/fibonacci.wvr.bpl' [2023-10-12 17:12:48,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:12:48,710 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:12:48,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:48,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:12:48,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:12:48,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,741 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:12:48,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:48,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:12:48,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:12:48,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:12:48,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:12:48,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:12:48,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:12:48,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:12:48,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:48,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:48,895 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) [2023-10-12 17:12:48,897 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 [2023-10-12 17:12:48,935 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:12:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:12:48,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:12:48,937 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:12:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:12:48,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:12:48,937 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:12:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:12:48,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:12:48,948 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-10-12 17:12:48,985 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:12:48,987 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:12:49,076 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:12:49,105 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:12:49,105 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-10-12 17:12:49,106 INFO L201 PluginConnector]: Adding new model fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:49 BoogieIcfgContainer [2023-10-12 17:12:49,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:12:49,107 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:12:49,107 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:12:49,110 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:12:49,110 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:49,110 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/2) ... [2023-10-12 17:12:49,111 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@374daa7f and model type fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:12:49, skipping insertion in model container [2023-10-12 17:12:49,111 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:49,111 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:49" (2/2) ... [2023-10-12 17:12:49,112 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibonacci.wvr.bpl [2023-10-12 17:12:49,144 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:12:49,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 21 transitions, 58 flow [2023-10-12 17:12:49,175 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-10-12 17:12:49,175 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:12:49,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:12:49,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 21 transitions, 58 flow [2023-10-12 17:12:49,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2023-10-12 17:12:49,183 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:12:49,192 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 17 transitions, 46 flow [2023-10-12 17:12:49,193 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 17 transitions, 46 flow [2023-10-12 17:12:49,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 17 transitions, 46 flow [2023-10-12 17:12:49,198 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-10-12 17:12:49,198 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:12:49,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:12:49,198 INFO L119 LiptonReduction]: Number of co-enabled transitions 48 [2023-10-12 17:12:49,252 INFO L134 LiptonReduction]: Checked pairs total: 26 [2023-10-12 17:12:49,252 INFO L136 LiptonReduction]: Total number of compositions: 5 [2023-10-12 17:12:49,265 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:12:49,265 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:12:49,265 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:12:49,265 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:12:49,265 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:12:49,265 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:12:49,265 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:12:49,265 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:12:49,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:12:49,287 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 7 [2023-10-12 17:12:49,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:49,287 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:49,291 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:12:49,291 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:49,291 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:12:49,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 19 states, but on-demand construction may add more states [2023-10-12 17:12:49,293 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 7 [2023-10-12 17:12:49,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:49,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:49,293 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:12:49,293 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:49,296 INFO L748 eck$LassoCheckResult]: Stem: 27#[$Ultimate##0]don't care [55] $Ultimate##0-->L59: Formula: (and (= v_f1_2_5 v_f1_6_5) (= v_f2_7_4 v_f2_3_4)) InVars {f2_7=v_f2_7_4, f1_6=v_f1_6_5, f2_3=v_f2_3_4, f1_2=v_f1_2_5} OutVars{f2_7=v_f2_7_4, f1_6=v_f1_6_5, f2_3=v_f2_3_4, f1_2=v_f1_2_5} AuxVars[] AssignedVars[] 30#[L59]don't care [68] L59-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 32#[$Ultimate##0, L59-1]don't care [58] $Ultimate##0-->L24: Formula: (= v_i_1_1 0) InVars {} OutVars{i_1=v_i_1_1} AuxVars[] AssignedVars[i_1] 36#[L24, L59-1]don't care [2023-10-12 17:12:49,296 INFO L750 eck$LassoCheckResult]: Loop: 36#[L24, L59-1]don't care [60] L24-->L24: Formula: (and (= (+ v_f2_3_14 v_f2_3_13) v_f1_2_16) (< v_i_1_11 v_n_0_13) (= (+ v_f1_2_17 v_f2_3_14) v_f1_2_16) (= v_i_1_10 (+ v_i_1_11 1))) InVars {n_0=v_n_0_13, f2_3=v_f2_3_14, f1_2=v_f1_2_17, i_1=v_i_1_11} OutVars{n_0=v_n_0_13, f2_3=v_f2_3_13, f1_2=v_f1_2_16, i_1=v_i_1_10} AuxVars[] AssignedVars[f2_3, f1_2, i_1] 36#[L24, L59-1]don't care [2023-10-12 17:12:49,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash 84812, now seen corresponding path program 1 times [2023-10-12 17:12:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:49,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049751491] [2023-10-12 17:12:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:49,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash 91, now seen corresponding path program 1 times [2023-10-12 17:12:49,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:49,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192846162] [2023-10-12 17:12:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:49,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:49,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2629232, now seen corresponding path program 1 times [2023-10-12 17:12:49,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:49,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132447607] [2023-10-12 17:12:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:49,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:49,505 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:49,505 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:49,505 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:49,505 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:49,505 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:12:49,505 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,505 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:49,505 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:49,506 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibonacci.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:12:49,506 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:49,506 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:49,516 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,529 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,572 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:49,573 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:12:49,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,577 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) [2023-10-12 17:12:49,578 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 [2023-10-12 17:12:49,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:49,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:49,608 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 [2023-10-12 17:12:49,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,609 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) [2023-10-12 17:12:49,611 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 [2023-10-12 17:12:49,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:49,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:49,704 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:12:49,710 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 [2023-10-12 17:12:49,710 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:49,710 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:49,710 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:49,710 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:49,710 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:49,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,710 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:49,711 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:49,711 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibonacci.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:12:49,711 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:49,711 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:49,712 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,717 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,745 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:49,750 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:49,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,752 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) [2023-10-12 17:12:49,754 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 [2023-10-12 17:12:49,756 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 [2023-10-12 17:12:49,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:49,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:49,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:49,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:49,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:49,766 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:49,766 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:49,781 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:49,786 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:12:49,786 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:12:49,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,789 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) [2023-10-12 17:12:49,790 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 [2023-10-12 17:12:49,829 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:49,829 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:12:49,830 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:49,830 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_1, n_0) = -1*i_1 + 1*n_0 Supporting invariants [] [2023-10-12 17:12:49,835 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 [2023-10-12 17:12:49,839 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:49,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:49,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:49,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:49,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:49,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:49,915 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:12:49,916 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 19 states, but on-demand construction may add more states Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2023-10-12 17:12:49,972 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 19 states, but on-demand construction may add more states. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 44 states and 100 transitions. Complement of second has 5 states. [2023-10-12 17:12:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:12:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2023-10-12 17:12:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2023-10-12 17:12:49,980 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:12:49,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:49,980 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:12:49,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:49,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:12:49,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:49,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 100 transitions. [2023-10-12 17:12:49,984 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 4 [2023-10-12 17:12:49,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 23 states and 53 transitions. [2023-10-12 17:12:49,987 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2023-10-12 17:12:49,987 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-10-12 17:12:49,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 53 transitions. [2023-10-12 17:12:49,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:12:49,988 INFO L219 hiAutomatonCegarLoop]: Abstraction has 23 states and 53 transitions. [2023-10-12 17:12:50,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 53 transitions. [2023-10-12 17:12:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2023-10-12 17:12:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 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) [2023-10-12 17:12:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 47 transitions. [2023-10-12 17:12:50,012 INFO L241 hiAutomatonCegarLoop]: Abstraction has 20 states and 47 transitions. [2023-10-12 17:12:50,012 INFO L430 stractBuchiCegarLoop]: Abstraction has 20 states and 47 transitions. [2023-10-12 17:12:50,012 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:12:50,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 47 transitions. [2023-10-12 17:12:50,013 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 4 [2023-10-12 17:12:50,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:50,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:50,013 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-10-12 17:12:50,013 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:50,014 INFO L748 eck$LassoCheckResult]: Stem: 181#[$Ultimate##0]don't care [55] $Ultimate##0-->L59: Formula: (and (= v_f1_2_5 v_f1_6_5) (= v_f2_7_4 v_f2_3_4)) InVars {f2_7=v_f2_7_4, f1_6=v_f1_6_5, f2_3=v_f2_3_4, f1_2=v_f1_2_5} OutVars{f2_7=v_f2_7_4, f1_6=v_f1_6_5, f2_3=v_f2_3_4, f1_2=v_f1_2_5} AuxVars[] AssignedVars[] 145#[L59]don't care [68] L59-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 147#[$Ultimate##0, L59-1]don't care [71] L59-1-->$Ultimate##0: 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] 149#[$Ultimate##0, $Ultimate##0, L60]don't care [62] $Ultimate##0-->L42: Formula: (= v_i_5_5 0) InVars {} OutVars{i_5=v_i_5_5} AuxVars[] AssignedVars[i_5] 153#[L42, $Ultimate##0, L60]don't care [2023-10-12 17:12:50,014 INFO L750 eck$LassoCheckResult]: Loop: 153#[L42, $Ultimate##0, L60]don't care [64] L42-->L42: Formula: (and (= (+ v_i_5_17 1) v_i_5_16) (= (+ v_f2_7_14 v_f2_7_13) v_f1_6_14) (= (+ v_f1_6_15 v_f2_7_14) v_f1_6_14) (< v_i_5_17 v_n_0_11)) InVars {f2_7=v_f2_7_14, n_0=v_n_0_11, f1_6=v_f1_6_15, i_5=v_i_5_17} OutVars{f2_7=v_f2_7_13, n_0=v_n_0_11, f1_6=v_f1_6_14, i_5=v_i_5_16} AuxVars[] AssignedVars[i_5, f2_7, f1_6] 153#[L42, $Ultimate##0, L60]don't care [2023-10-12 17:12:50,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2629637, now seen corresponding path program 1 times [2023-10-12 17:12:50,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100446511] [2023-10-12 17:12:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 95, now seen corresponding path program 1 times [2023-10-12 17:12:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305025868] [2023-10-12 17:12:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,029 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,031 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash 81518811, now seen corresponding path program 1 times [2023-10-12 17:12:50,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444169063] [2023-10-12 17:12:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,043 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,068 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:50,068 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:50,068 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:50,068 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:50,068 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:12:50,068 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,068 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:50,068 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:50,068 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibonacci.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:12:50,069 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:50,069 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:50,069 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:50,075 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:50,108 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:50,108 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:12:50,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,111 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) [2023-10-12 17:12:50,112 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 [2023-10-12 17:12:50,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:50,114 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:50,164 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 [2023-10-12 17:12:50,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,166 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) [2023-10-12 17:12:50,167 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 [2023-10-12 17:12:50,169 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:50,169 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:50,263 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:12:50,265 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 [2023-10-12 17:12:50,266 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:50,266 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:50,266 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:50,266 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:50,266 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:50,266 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,266 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:50,267 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:50,267 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibonacci.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:12:50,267 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:50,267 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:50,268 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:50,273 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:50,299 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:50,299 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:50,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,301 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) [2023-10-12 17:12:50,302 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 [2023-10-12 17:12:50,304 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 [2023-10-12 17:12:50,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:50,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:50,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:50,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:50,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:50,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:50,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:50,312 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:50,315 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:12:50,315 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:12:50,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,317 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) [2023-10-12 17:12:50,319 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 [2023-10-12 17:12:50,319 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:50,320 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:12:50,320 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:50,320 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(n_0, i_5) = 1*n_0 - 1*i_5 Supporting invariants [] [2023-10-12 17:12:50,322 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 [2023-10-12 17:12:50,323 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:50,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:50,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:50,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:50,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:50,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:50,357 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:12:50,357 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 47 transitions. cyclomatic complexity: 34 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-10-12 17:12:50,383 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 47 transitions. cyclomatic complexity: 34. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 36 states and 81 transitions. Complement of second has 4 states. [2023-10-12 17:12:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:12:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-10-12 17:12:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 17 transitions. [2023-10-12 17:12:50,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:12:50,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:50,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:12:50,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:50,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:12:50,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:50,387 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 81 transitions. [2023-10-12 17:12:50,390 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:12:50,391 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2023-10-12 17:12:50,391 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:12:50,391 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:12:50,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:12:50,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:12:50,391 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:50,391 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:50,391 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:50,391 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:12:50,391 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:12:50,391 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:12:50,391 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:12:50,395 INFO L201 PluginConnector]: Adding new model fibonacci.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:12:50 BoogieIcfgContainer [2023-10-12 17:12:50,396 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:12:50,396 INFO L158 Benchmark]: Toolchain (without parser) took 1686.39ms. Allocated memory was 174.1MB in the beginning and 255.9MB in the end (delta: 81.8MB). Free memory was 127.7MB in the beginning and 175.7MB in the end (delta: -48.0MB). Peak memory consumption was 33.3MB. Max. memory is 8.0GB. [2023-10-12 17:12:50,396 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.24ms. Allocated memory is still 174.1MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:12:50,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.99ms. Allocated memory is still 174.1MB. Free memory was 127.4MB in the beginning and 126.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:12:50,397 INFO L158 Benchmark]: Boogie Preprocessor took 24.79ms. Allocated memory is still 174.1MB. Free memory was 126.1MB in the beginning and 125.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:12:50,398 INFO L158 Benchmark]: RCFGBuilder took 338.92ms. Allocated memory is still 174.1MB. Free memory was 125.0MB in the beginning and 113.8MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-10-12 17:12:50,398 INFO L158 Benchmark]: BuchiAutomizer took 1288.51ms. Allocated memory was 174.1MB in the beginning and 255.9MB in the end (delta: 81.8MB). Free memory was 113.8MB in the beginning and 175.7MB in the end (delta: -61.9MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. [2023-10-12 17:12:50,400 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 0.24ms. Allocated memory is still 174.1MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.99ms. Allocated memory is still 174.1MB. Free memory was 127.4MB in the beginning and 126.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.79ms. Allocated memory is still 174.1MB. Free memory was 126.1MB in the beginning and 125.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 338.92ms. Allocated memory is still 174.1MB. Free memory was 125.0MB in the beginning and 113.8MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 1288.51ms. Allocated memory was 174.1MB in the beginning and 255.9MB in the end (delta: 81.8MB). Free memory was 113.8MB in the beginning and 175.7MB in the end (delta: -61.9MB). Peak memory consumption was 18.6MB. 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 n_0 + -1 * i_1 and consists of 4 locations. One deterministic module has affine ranking function -1 * i_5 + n_0 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 8 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq200 hnf91 smp100 dnf100 smp100 tf109 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 79ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 22 PlacesBefore, 18 PlacesAfterwards, 17 TransitionsBefore, 13 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 26 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26, independent: 26, independent conditional: 0, independent unconditional: 26, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 26, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:12:50,430 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 [2023-10-12 17:12:50,631 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 [2023-10-12 17:12:50,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...