/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-flipped-dist.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:21:56,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:21:56,430 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:21:56,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:21:56,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:21:56,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:21:56,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:21:56,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:21:56,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:21:56,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:21:56,457 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:21:56,457 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:21:56,457 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:21:56,457 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:21:56,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:21:56,458 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:21:56,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:21:56,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:21:56,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:21:56,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:21:56,459 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:21:56,459 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:21:56,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:21:56,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:21:56,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:21:56,724 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:21:56,725 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:21:56,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-flipped-dist.wvr.bpl [2025-04-26 16:21:56,727 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-flipped-dist.wvr.bpl' [2025-04-26 16:21:56,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:21:56,745 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:21:56,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:21:56,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:21:56,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:21:56,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,778 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:21:56,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:21:56,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:21:56,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:21:56,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:21:56,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,791 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:21:56,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:21:56,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:21:56,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:21:56,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/1) ... [2025-04-26 16:21:56,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:56,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:56,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:56,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-04-26 16:21:56,863 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:21:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:21:56,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:21:56,863 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:21:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:21:56,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:21:56,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:21:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:21:56,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:21:56,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:21:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:21:56,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:21:56,864 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:21:56,904 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:21:56,906 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:21:56,987 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:21:56,987 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:21:57,009 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:21:57,009 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:21:57,011 INFO L201 PluginConnector]: Adding new model mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:21:57 BoogieIcfgContainer [2025-04-26 16:21:57,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:21:57,013 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:21:57,013 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:21:57,017 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:21:57,018 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:21:57,018 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:21:56" (1/2) ... [2025-04-26 16:21:57,019 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66e93e3c and model type mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:21:57, skipping insertion in model container [2025-04-26 16:21:57,019 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:21:57,019 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:21:57" (2/2) ... [2025-04-26 16:21:57,020 INFO L376 chiAutomizerObserver]: Analyzing ICFG mult-flipped-dist.wvr.bpl [2025-04-26 16:21:57,074 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-26 16:21:57,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 79 flow [2025-04-26 16:21:57,125 INFO L116 PetriNetUnfolderBase]: 3/23 cut-off events. [2025-04-26 16:21:57,127 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-26 16:21:57,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2025-04-26 16:21:57,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 79 flow [2025-04-26 16:21:57,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2025-04-26 16:21:57,135 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 30 places, 23 transitions, 64 flow [2025-04-26 16:21:57,145 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:21:57,145 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:21:57,145 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:21:57,145 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:21:57,145 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:21:57,146 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:21:57,146 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:21:57,146 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:21:57,147 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:21:57,194 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 84 [2025-04-26 16:21:57,194 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:21:57,194 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:21:57,198 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:21:57,198 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:21:57,198 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:21:57,199 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 110 states, but on-demand construction may add more states [2025-04-26 16:21:57,205 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 84 [2025-04-26 16:21:57,205 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:21:57,205 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:21:57,205 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:21:57,205 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:21:57,209 INFO L752 eck$LassoCheckResult]: Stem: "[54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3)) InVars {x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5} OutVars{x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5} AuxVars[] AssignedVars[]" "[75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:21:57,210 INFO L754 eck$LassoCheckResult]: Loop: "[62] L23-1-->L23: Formula: (< v_i_1_1 v_c_1) InVars {c=v_c_1, i_1=v_i_1_1} OutVars{c=v_c_1, i_1=v_i_1_1} AuxVars[] AssignedVars[]" "[64] L23-->L23-1: Formula: (and (= v_x_1_5 (+ v_a_3 v_x_1_6)) (= (+ v_i_1_7 1) v_i_1_6)) InVars {x_1=v_x_1_6, a=v_a_3, i_1=v_i_1_7} OutVars{x_1=v_x_1_5, a=v_a_3, i_1=v_i_1_6} AuxVars[] AssignedVars[x_1, i_1]" [2025-04-26 16:21:57,215 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2710, now seen corresponding path program 1 times [2025-04-26 16:21:57,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:21:57,223 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85623415] [2025-04-26 16:21:57,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:21:57,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:21:57,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:57,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:57,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:57,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:57,275 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:21:57,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:57,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:57,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:57,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:57,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:21:57,290 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2947, now seen corresponding path program 1 times [2025-04-26 16:21:57,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:21:57,290 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40031146] [2025-04-26 16:21:57,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:21:57,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:21:57,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:57,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:57,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:57,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:57,299 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:21:57,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:57,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:57,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:57,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:57,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:21:57,303 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:57,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2606296, now seen corresponding path program 1 times [2025-04-26 16:21:57,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:21:57,303 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178749777] [2025-04-26 16:21:57,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:21:57,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:21:57,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:21:57,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:21:57,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:57,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:57,314 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:21:57,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:21:57,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:21:57,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:57,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:57,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:21:57,362 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:21:57,362 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:21:57,362 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:21:57,362 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:21:57,362 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:21:57,363 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:57,363 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:21:57,363 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:21:57,363 INFO L132 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_petrified1_Iteration1_Loop [2025-04-26 16:21:57,363 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:21:57,363 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:21:57,371 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:57,383 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:57,433 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:21:57,435 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:21:57,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:57,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:57,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:57,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-04-26 16:21:57,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:21:57,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:21:57,457 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:21:57,457 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x_1=0, a=0} Honda state: {x_1=0, a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:21:57,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:57,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:57,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:57,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:57,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:21:57,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:21:57,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:21:57,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:21:57,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:57,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:57,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:57,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:21:57,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:21:57,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:21:57,560 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:21:57,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:57,564 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:21:57,564 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:21:57,564 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:21:57,564 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:21:57,564 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:21:57,564 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:57,564 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:21:57,565 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:21:57,565 INFO L132 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_petrified1_Iteration1_Loop [2025-04-26 16:21:57,565 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:21:57,565 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:21:57,565 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:57,570 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:57,604 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:21:57,607 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:21:57,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:57,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:57,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:21:57,613 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:21:57,625 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:21:57,625 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:21:57,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:21:57,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:21:57,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:21:57,635 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:21:57,635 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:21:57,638 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:21:57,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:57,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:57,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:57,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:57,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:21:57,654 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:21:57,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:21:57,668 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:21:57,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:21:57,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:21:57,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:21:57,671 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:21:57,671 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:21:57,673 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:21:57,677 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:21:57,677 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:21:57,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:57,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:57,680 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:57,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:21:57,683 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:21:57,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:57,687 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:21:57,687 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:21:57,687 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(c, i_1) = 1*c - 1*i_1 Supporting invariants [] [2025-04-26 16:21:57,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:57,696 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:21:57,715 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:57,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:57,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:57,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:57,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:21:57,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:21:57,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:21:57,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:57,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:57,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:57,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:21:57,761 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:21:57,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:21:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:21:57,824 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:21:57,826 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 110 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:21:57,954 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 110 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 298 states and 943 transitions. Complement of second has 7 states. [2025-04-26 16:21:57,956 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:21:57,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:21:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2025-04-26 16:21:57,966 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 45 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:21:57,966 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:21:57,966 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 45 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:21:57,966 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:21:57,966 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 45 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:21:57,967 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:21:57,967 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 298 states and 943 transitions. [2025-04-26 16:21:57,976 INFO L131 ngComponentsAnalysis]: Automaton has 30 accepting balls. 70 [2025-04-26 16:21:57,980 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 298 states to 182 states and 586 transitions. [2025-04-26 16:21:57,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2025-04-26 16:21:57,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 132 [2025-04-26 16:21:57,982 INFO L74 IsDeterministic]: Start isDeterministic. Operand 182 states and 586 transitions. [2025-04-26 16:21:57,982 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:21:57,982 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 586 transitions. [2025-04-26 16:21:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 586 transitions. [2025-04-26 16:21:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 134. [2025-04-26 16:21:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 3.298507462686567) internal successors, (in total 442), 133 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:21:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 442 transitions. [2025-04-26 16:21:58,004 INFO L240 hiAutomatonCegarLoop]: Abstraction has 134 states and 442 transitions. [2025-04-26 16:21:58,004 INFO L438 stractBuchiCegarLoop]: Abstraction has 134 states and 442 transitions. [2025-04-26 16:21:58,004 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:21:58,004 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 442 transitions. [2025-04-26 16:21:58,006 INFO L131 ngComponentsAnalysis]: Automaton has 30 accepting balls. 70 [2025-04-26 16:21:58,006 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:21:58,006 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:21:58,006 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:21:58,006 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:21:58,007 INFO L752 eck$LassoCheckResult]: Stem: "[54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3)) InVars {x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5} OutVars{x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5} AuxVars[] AssignedVars[]" "[75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[78] L56-1-->L34-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:21:58,007 INFO L754 eck$LassoCheckResult]: Loop: "[66] L34-1-->L34: Formula: (< v_i_2_1 v_c_3) InVars {i_2=v_i_2_1, c=v_c_3} OutVars{i_2=v_i_2_1, c=v_c_3} AuxVars[] AssignedVars[]" "[68] L34-->L34-1: Formula: (and (= v_i_2_6 (+ v_i_2_7 1)) (= (+ v_b_3 v_x_2_6) v_x_2_5)) InVars {i_2=v_i_2_7, x_2=v_x_2_6, b=v_b_3} OutVars{i_2=v_i_2_6, x_2=v_x_2_5, b=v_b_3} AuxVars[] AssignedVars[x_2, i_2]" [2025-04-26 16:21:58,007 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:58,007 INFO L85 PathProgramCache]: Analyzing trace with hash 84088, now seen corresponding path program 1 times [2025-04-26 16:21:58,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:21:58,007 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729585710] [2025-04-26 16:21:58,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:21:58,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:21:58,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:21:58,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:21:58,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,012 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:21:58,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:21:58,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:21:58,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:21:58,019 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:58,019 INFO L85 PathProgramCache]: Analyzing trace with hash 3075, now seen corresponding path program 1 times [2025-04-26 16:21:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:21:58,020 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024592324] [2025-04-26 16:21:58,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:21:58,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:21:58,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:58,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:58,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,025 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:21:58,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:58,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:58,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:21:58,028 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash 80810682, now seen corresponding path program 1 times [2025-04-26 16:21:58,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:21:58,028 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888187229] [2025-04-26 16:21:58,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:21:58,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:21:58,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:21:58,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:21:58,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,033 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:21:58,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:21:58,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:21:58,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:21:58,057 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:21:58,057 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:21:58,057 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:21:58,057 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:21:58,057 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:21:58,057 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,057 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:21:58,057 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:21:58,057 INFO L132 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_petrified1_Iteration2_Loop [2025-04-26 16:21:58,057 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:21:58,057 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:21:58,058 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:58,063 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:58,082 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:21:58,083 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:21:58,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:58,084 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:58,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:21:58,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:21:58,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:21:58,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:58,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:58,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:58,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:21:58,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:21:58,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:21:58,171 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:21:58,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:21:58,175 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:21:58,175 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:21:58,175 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:21:58,175 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:21:58,175 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:21:58,175 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,175 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:21:58,176 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:21:58,176 INFO L132 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_petrified1_Iteration2_Loop [2025-04-26 16:21:58,176 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:21:58,176 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:21:58,176 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:58,182 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:58,202 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:21:58,202 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:21:58,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:58,204 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:58,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:21:58,207 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:21:58,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:21:58,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:21:58,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:21:58,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:21:58,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:21:58,218 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:21:58,218 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:21:58,220 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:21:58,222 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:21:58,222 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:21:58,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:58,224 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:58,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:21:58,227 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:21:58,230 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:21:58,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:58,230 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:21:58,230 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:21:58,231 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(c, i_2) = 1*c - 1*i_2 Supporting invariants [] [2025-04-26 16:21:58,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:58,237 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:21:58,247 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:58,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:21:58,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:21:58,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:21:58,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:21:58,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:21:58,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:58,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:58,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:21:58,270 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:21:58,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:21:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:21:58,285 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:21:58,285 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 134 states and 442 transitions. cyclomatic complexity: 347 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:21:58,348 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 134 states and 442 transitions. cyclomatic complexity: 347. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 406 states and 1401 transitions. Complement of second has 6 states. [2025-04-26 16:21:58,348 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:21:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:21:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2025-04-26 16:21:58,349 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 44 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:21:58,349 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:21:58,349 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 44 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:21:58,349 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:21:58,349 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 44 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:21:58,350 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:21:58,350 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 406 states and 1401 transitions. [2025-04-26 16:21:58,355 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 42 [2025-04-26 16:21:58,361 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 406 states to 228 states and 788 transitions. [2025-04-26 16:21:58,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2025-04-26 16:21:58,362 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 127 [2025-04-26 16:21:58,362 INFO L74 IsDeterministic]: Start isDeterministic. Operand 228 states and 788 transitions. [2025-04-26 16:21:58,362 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:21:58,362 INFO L218 hiAutomatonCegarLoop]: Abstraction has 228 states and 788 transitions. [2025-04-26 16:21:58,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states and 788 transitions. [2025-04-26 16:21:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 187. [2025-04-26 16:21:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 187 states have (on average 3.6149732620320854) internal successors, (in total 676), 186 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:21:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 676 transitions. [2025-04-26 16:21:58,375 INFO L240 hiAutomatonCegarLoop]: Abstraction has 187 states and 676 transitions. [2025-04-26 16:21:58,375 INFO L438 stractBuchiCegarLoop]: Abstraction has 187 states and 676 transitions. [2025-04-26 16:21:58,375 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:21:58,375 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 187 states and 676 transitions. [2025-04-26 16:21:58,377 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 42 [2025-04-26 16:21:58,377 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:21:58,377 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:21:58,378 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:21:58,378 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:21:58,378 INFO L752 eck$LassoCheckResult]: Stem: "[54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3)) InVars {x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5} OutVars{x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5} AuxVars[] AssignedVars[]" "[75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[78] L56-1-->L34-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[81] L57-->L45-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 16:21:58,378 INFO L754 eck$LassoCheckResult]: Loop: "[70] L45-1-->L45: Formula: (< v_i_3_3 v_c_6) InVars {i_3=v_i_3_3, c=v_c_6} OutVars{i_3=v_i_3_3, c=v_c_6} AuxVars[] AssignedVars[]" "[72] L45-->L45-1: Formula: (and (= v_x_3_5 (+ v_a_5 v_b_5 v_x_3_6)) (= (+ v_i_3_7 1) v_i_3_6)) InVars {a=v_a_5, x_3=v_x_3_6, i_3=v_i_3_7, b=v_b_5} OutVars{a=v_a_5, x_3=v_x_3_5, i_3=v_i_3_6, b=v_b_5} AuxVars[] AssignedVars[x_3, i_3]" [2025-04-26 16:21:58,378 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2606809, now seen corresponding path program 1 times [2025-04-26 16:21:58,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:21:58,379 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767134206] [2025-04-26 16:21:58,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:21:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:21:58,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:21:58,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:21:58,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,385 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:21:58,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:21:58,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:21:58,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:21:58,389 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:58,389 INFO L85 PathProgramCache]: Analyzing trace with hash 3203, now seen corresponding path program 1 times [2025-04-26 16:21:58,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:21:58,389 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34610399] [2025-04-26 16:21:58,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:21:58,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:21:58,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:58,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:58,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,392 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:21:58,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:58,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:58,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:21:58,394 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:58,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1789821605, now seen corresponding path program 1 times [2025-04-26 16:21:58,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:21:58,394 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812389398] [2025-04-26 16:21:58,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:21:58,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:21:58,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:21:58,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:21:58,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,398 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:21:58,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:21:58,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:21:58,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:21:58,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:21:58,426 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:21:58,426 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:21:58,426 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:21:58,426 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:21:58,426 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:21:58,426 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,426 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:21:58,426 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:21:58,426 INFO L132 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_petrified1_Iteration3_Loop [2025-04-26 16:21:58,426 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:21:58,426 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:21:58,427 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:58,431 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:58,451 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:21:58,451 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:21:58,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:58,453 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:58,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:21:58,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:21:58,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:21:58,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:58,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:58,500 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:58,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:21:58,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:21:58,502 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:21:58,566 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:21:58,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:58,571 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:21:58,571 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:21:58,571 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:21:58,571 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:21:58,571 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:21:58,571 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,571 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:21:58,571 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:21:58,571 INFO L132 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_petrified1_Iteration3_Loop [2025-04-26 16:21:58,571 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:21:58,571 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:21:58,572 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:58,582 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:21:58,602 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:21:58,602 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:21:58,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:58,605 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:58,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:21:58,606 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:21:58,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:21:58,616 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:21:58,616 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:21:58,616 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:21:58,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:21:58,617 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:21:58,617 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:21:58,618 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:21:58,621 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:21:58,621 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:21:58,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:21:58,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:21:58,623 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:21:58,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:21:58,625 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:21:58,628 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:21:58,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 16:21:58,629 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:21:58,629 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:21:58,629 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(c, i_3) = 1*c - 1*i_3 Supporting invariants [] [2025-04-26 16:21:58,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:21:58,635 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:21:58,649 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:21:58,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:21:58,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:21:58,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:21:58,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:21:58,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:21:58,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:21:58,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:21:58,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:21:58,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:21:58,663 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:21:58,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:21:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:21:58,674 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:21:58,675 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 187 states and 676 transitions. cyclomatic complexity: 530 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:21:58,730 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 187 states and 676 transitions. cyclomatic complexity: 530. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 504 states and 1777 transitions. Complement of second has 6 states. [2025-04-26 16:21:58,731 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:21:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:21:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2025-04-26 16:21:58,732 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:21:58,732 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:21:58,732 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:21:58,732 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:21:58,732 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 16:21:58,732 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:21:58,732 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 504 states and 1777 transitions. [2025-04-26 16:21:58,738 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:21:58,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 504 states to 0 states and 0 transitions. [2025-04-26 16:21:58,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:21:58,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:21:58,739 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:21:58,739 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:21:58,739 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:21:58,739 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:21:58,739 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:21:58,739 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:21:58,739 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:21:58,739 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:21:58,739 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:21:58,743 INFO L201 PluginConnector]: Adding new model mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:21:58 BoogieIcfgContainer [2025-04-26 16:21:58,743 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:21:58,744 INFO L158 Benchmark]: Toolchain (without parser) took 1998.68ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 85.6MB in the beginning and 48.4MB in the end (delta: 37.2MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. [2025-04-26 16:21:58,744 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.79ms. Allocated memory is still 159.4MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:21:58,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.69ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 83.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:21:58,744 INFO L158 Benchmark]: Boogie Preprocessor took 29.21ms. Allocated memory is still 159.4MB. Free memory was 83.8MB in the beginning and 82.8MB in the end (delta: 976.7kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:21:58,745 INFO L158 Benchmark]: RCFGBuilder took 201.11ms. Allocated memory is still 159.4MB. Free memory was 82.8MB in the beginning and 73.0MB in the end (delta: 9.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:21:58,746 INFO L158 Benchmark]: BuchiAutomizer took 1730.25ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 72.9MB in the beginning and 48.4MB in the end (delta: 24.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2025-04-26 16:21:58,746 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 0.79ms. Allocated memory is still 159.4MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.69ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 83.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 29.21ms. Allocated memory is still 159.4MB. Free memory was 83.8MB in the beginning and 82.8MB in the end (delta: 976.7kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 201.11ms. Allocated memory is still 159.4MB. Free memory was 82.8MB in the beginning and 73.0MB in the end (delta: 9.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 1730.25ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 72.9MB in the beginning and 48.4MB in the end (delta: 24.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 89 StatesRemovedByMinimization, 2 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 89 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 156 IncrementalHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 28 mSDtfsCounter, 156 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp69 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function c + -1 * i_1 and consists of 5 locations. One deterministic module has affine ranking function -1 * i_2 + c and consists of 4 locations. One deterministic module has affine ranking function -1 * i_3 + c and consists of 4 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:21:58,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...