/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_AUTOMATON -i ../../../trunk/examples/concurrent/bpl/concurrent_mult.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:11:52,682 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:11:52,756 INFO L100 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2023-10-12 17:11:52,794 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:11:52,794 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:11:52,795 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:11:52,796 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:11:52,796 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:11:52,797 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:11:52,800 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:11:52,800 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:11:52,801 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:11:52,801 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:11:52,802 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:11:52,802 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:11:52,803 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:11:52,803 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:11:52,803 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:11:52,803 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:11:52,803 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:11:52,803 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:11:52,804 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:11:52,805 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:11:52,805 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:11:52,805 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:11:52,806 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:11:52,806 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:11:52,806 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:11:52,806 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:11:52,806 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:11:52,807 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:11:52,808 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:11:52,808 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:11:52,809 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:11:52,809 INFO L137 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:11:53,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:11:53,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:11:53,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:11:53,066 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:11:53,067 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:11:53,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_mult.bpl [2023-10-12 17:11:53,069 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_mult.bpl' [2023-10-12 17:11:53,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:11:53,094 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:11:53,095 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:11:53,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:11:53,096 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:11:53,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,120 INFO L138 Inliner]: procedures = 2, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:11:53,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:11:53,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:11:53,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:11:53,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:11:53,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:11:53,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:11:53,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:11:53,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:11:53,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/1) ... [2023-10-12 17:11:53,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:53,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:53,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:53,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-10-12 17:11:53,216 INFO L124 BoogieDeclarations]: Specification and implementation of procedure mult given in one single declaration [2023-10-12 17:11:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-10-12 17:11:53,216 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-10-12 17:11:53,216 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:11:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:11:53,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:11:53,217 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-10-12 17:11:53,257 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:11:53,259 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:11:53,317 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:11:53,323 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:11:53,323 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:11:53,325 INFO L201 PluginConnector]: Adding new model concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:11:53 BoogieIcfgContainer [2023-10-12 17:11:53,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:11:53,326 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:11:53,326 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:11:53,329 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:11:53,330 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:11:53,330 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:11:53" (1/2) ... [2023-10-12 17:11:53,331 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54baa100 and model type concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:11:53, skipping insertion in model container [2023-10-12 17:11:53,332 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:11:53,332 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:11:53" (2/2) ... [2023-10-12 17:11:53,333 INFO L332 chiAutomizerObserver]: Analyzing ICFG concurrent_mult.bpl [2023-10-12 17:11:53,405 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:11:53,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 70 flow [2023-10-12 17:11:53,447 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-10-12 17:11:53,448 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:11:53,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-10-12 17:11:53,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 70 flow [2023-10-12 17:11:53,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 58 flow [2023-10-12 17:11:53,458 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:11:53,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 23 transitions, 58 flow [2023-10-12 17:11:53,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 23 transitions, 58 flow [2023-10-12 17:11:53,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 58 flow [2023-10-12 17:11:53,514 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-10-12 17:11:53,514 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:11:53,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-10-12 17:11:53,516 INFO L119 LiptonReduction]: Number of co-enabled transitions 126 [2023-10-12 17:11:53,707 INFO L134 LiptonReduction]: Checked pairs total: 76 [2023-10-12 17:11:53,707 INFO L136 LiptonReduction]: Total number of compositions: 10 [2023-10-12 17:11:53,727 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:11:53,727 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:11:53,728 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:11:53,728 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:11:53,728 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:11:53,728 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:11:53,728 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:11:53,728 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:11:53,730 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:11:53,755 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 7 [2023-10-12 17:11:53,755 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:11:53,755 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:11:53,760 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:11:53,760 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:11:53,760 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:11:53,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 19 states, but on-demand construction may add more states [2023-10-12 17:11:53,762 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 7 [2023-10-12 17:11:53,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:11:53,763 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:11:53,763 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:11:53,763 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:11:53,767 INFO L748 eck$LassoCheckResult]: Stem: 33#[$Ultimate##0]don't care [65] $Ultimate##0-->L19: Formula: (and (<= 0 v_ULTIMATE.start_y_6) (<= 0 v_ULTIMATE.start_x_6)) InVars {ULTIMATE.start_y=v_ULTIMATE.start_y_6, ULTIMATE.start_x=v_ULTIMATE.start_x_6} OutVars{ULTIMATE.start_y=v_ULTIMATE.start_y_6, ULTIMATE.start_x=v_ULTIMATE.start_x_6} AuxVars[] AssignedVars[] 36#[L19]don't care [52] L19-->$Ultimate##0: Formula: (and (= v_multThread1of1ForFork0_a_6 v_ULTIMATE.start_x_3) (= v_multThread1of1ForFork0_thidvar0_2 1) (= v_multThread1of1ForFork0_b_4 v_ULTIMATE.start_y_3)) InVars {ULTIMATE.start_y=v_ULTIMATE.start_y_3, ULTIMATE.start_x=v_ULTIMATE.start_x_3} OutVars{multThread1of1ForFork0_thidvar0=v_multThread1of1ForFork0_thidvar0_2, multThread1of1ForFork0_b=v_multThread1of1ForFork0_b_4, multThread1of1ForFork0_a=v_multThread1of1ForFork0_a_6, ULTIMATE.start_y=v_ULTIMATE.start_y_3, ULTIMATE.start_x=v_ULTIMATE.start_x_3, multThread1of1ForFork0_z=v_multThread1of1ForFork0_z_8, multThread1of1ForFork0_i=v_multThread1of1ForFork0_i_12} AuxVars[] AssignedVars[multThread1of1ForFork0_thidvar0, multThread1of1ForFork0_b, multThread1of1ForFork0_a, multThread1of1ForFork0_z, multThread1of1ForFork0_i] 38#[L19-1, $Ultimate##0]don't care [64] $Ultimate##0-->L32-1: Formula: (and (= v_multThread1of1ForFork0_i_17 0) (= v_multThread1of1ForFork0_z_15 0)) InVars {} OutVars{multThread1of1ForFork0_z=v_multThread1of1ForFork0_z_15, multThread1of1ForFork0_i=v_multThread1of1ForFork0_i_17} AuxVars[] AssignedVars[multThread1of1ForFork0_z, multThread1of1ForFork0_i] 40#[L19-1, L32-1]don't care [2023-10-12 17:11:53,767 INFO L750 eck$LassoCheckResult]: Loop: 40#[L19-1, L32-1]don't care [67] L32-1-->L32-1: Formula: (and (< v_multThread1of1ForFork0_i_20 v_multThread1of1ForFork0_a_11) (= (+ v_multThread1of1ForFork0_b_7 v_multThread1of1ForFork0_z_18) v_multThread1of1ForFork0_z_17) (= (+ v_multThread1of1ForFork0_i_20 1) v_multThread1of1ForFork0_i_19)) InVars {multThread1of1ForFork0_b=v_multThread1of1ForFork0_b_7, multThread1of1ForFork0_a=v_multThread1of1ForFork0_a_11, multThread1of1ForFork0_z=v_multThread1of1ForFork0_z_18, multThread1of1ForFork0_i=v_multThread1of1ForFork0_i_20} OutVars{multThread1of1ForFork0_b=v_multThread1of1ForFork0_b_7, multThread1of1ForFork0_a=v_multThread1of1ForFork0_a_11, multThread1of1ForFork0_z=v_multThread1of1ForFork0_z_17, multThread1of1ForFork0_i=v_multThread1of1ForFork0_i_19} AuxVars[] AssignedVars[multThread1of1ForFork0_z, multThread1of1ForFork0_i] 40#[L19-1, L32-1]don't care [2023-10-12 17:11:53,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:11:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash 93932, now seen corresponding path program 1 times [2023-10-12 17:11:53,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:11:53,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287424121] [2023-10-12 17:11:53,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:11:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:11:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:53,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:11:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:53,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:11:53,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:11:53,860 INFO L85 PathProgramCache]: Analyzing trace with hash 98, now seen corresponding path program 1 times [2023-10-12 17:11:53,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:11:53,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816099344] [2023-10-12 17:11:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:11:53,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:11:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:53,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:11:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:53,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:11:53,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:11:53,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2911959, now seen corresponding path program 1 times [2023-10-12 17:11:53,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:11:53,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241283986] [2023-10-12 17:11:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:11:53,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:11:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:53,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:11:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:53,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:11:53,963 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:11:53,963 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:11:53,963 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:11:53,964 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:11:53,964 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:11:53,964 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:53,964 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:11:53,964 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:11:53,964 INFO L133 ssoRankerPreferences]: Filename of dumped script: concurrent_mult.bpl_BEv2_Iteration1_Loop [2023-10-12 17:11:53,964 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:11:53,964 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:11:53,976 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:11:53,986 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:11:54,021 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:11:54,021 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:11:54,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:54,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:54,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:54,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-10-12 17:11:54,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:11:54,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:11:54,056 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:11:54,057 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {multThread1of1ForFork0_b=0, multThread1of1ForFork0_z=0} Honda state: {multThread1of1ForFork0_b=0, multThread1of1ForFork0_z=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:11:54,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-10-12 17:11:54,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:54,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:54,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:54,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-10-12 17:11:54,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:11:54,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:11:54,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:54,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:54,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:54,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:54,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-10-12 17:11:54,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:11:54,162 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:11:54,290 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:11:54,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:54,293 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:11:54,293 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:11:54,293 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:11:54,293 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:11:54,293 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:11:54,293 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:54,293 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:11:54,293 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:11:54,294 INFO L133 ssoRankerPreferences]: Filename of dumped script: concurrent_mult.bpl_BEv2_Iteration1_Loop [2023-10-12 17:11:54,294 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:11:54,294 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:11:54,295 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:11:54,301 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:11:54,334 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:11:54,338 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:11:54,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:54,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:54,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:54,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-10-12 17:11:54,490 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:11:54,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:11:54,499 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:11:54,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:11:54,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:11:54,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:11:54,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:11:54,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:11:54,525 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:11:54,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:54,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:54,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:54,639 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:54,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-10-12 17:11:54,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:11:54,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:11:54,648 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:11:54,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:11:54,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:11:54,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:11:54,649 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:11:54,649 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:11:54,657 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:11:54,677 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:11:54,677 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:11:54,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:54,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:54,688 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:54,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-10-12 17:11:54,749 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:11:54,750 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:11:54,750 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:11:54,750 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(multThread1of1ForFork0_i, multThread1of1ForFork0_a) = -1*multThread1of1ForFork0_i + 1*multThread1of1ForFork0_a Supporting invariants [] [2023-10-12 17:11:54,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:54,760 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:11:54,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:11:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:11:54,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:11:54,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:11:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:11:54,807 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:11:54,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:11:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:11:54,833 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:11:54,835 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 19 states, but on-demand construction may add more states Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:11:54,881 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 19 states, but on-demand construction may add more states. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 101 transitions. Complement of second has 4 states. [2023-10-12 17:11:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:11:54,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:11:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2023-10-12 17:11:54,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:11:54,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:11:54,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:11:54,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:11:54,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:11:54,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:11:54,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 101 transitions. [2023-10-12 17:11:54,892 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 4 [2023-10-12 17:11:54,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 53 transitions. [2023-10-12 17:11:54,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2023-10-12 17:11:54,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-10-12 17:11:54,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 53 transitions. [2023-10-12 17:11:54,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:11:54,896 INFO L219 hiAutomatonCegarLoop]: Abstraction has 23 states and 53 transitions. [2023-10-12 17:11:54,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 53 transitions. [2023-10-12 17:11:54,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2023-10-12 17:11:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:11:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 47 transitions. [2023-10-12 17:11:54,913 INFO L241 hiAutomatonCegarLoop]: Abstraction has 20 states and 47 transitions. [2023-10-12 17:11:54,913 INFO L430 stractBuchiCegarLoop]: Abstraction has 20 states and 47 transitions. [2023-10-12 17:11:54,914 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:11:54,914 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 47 transitions. [2023-10-12 17:11:54,915 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 4 [2023-10-12 17:11:54,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:11:54,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:11:54,915 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-10-12 17:11:54,915 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:11:54,916 INFO L748 eck$LassoCheckResult]: Stem: 181#[$Ultimate##0]don't care [65] $Ultimate##0-->L19: Formula: (and (<= 0 v_ULTIMATE.start_y_6) (<= 0 v_ULTIMATE.start_x_6)) InVars {ULTIMATE.start_y=v_ULTIMATE.start_y_6, ULTIMATE.start_x=v_ULTIMATE.start_x_6} OutVars{ULTIMATE.start_y=v_ULTIMATE.start_y_6, ULTIMATE.start_x=v_ULTIMATE.start_x_6} AuxVars[] AssignedVars[] 183#[L19]don't care [52] L19-->$Ultimate##0: Formula: (and (= v_multThread1of1ForFork0_a_6 v_ULTIMATE.start_x_3) (= v_multThread1of1ForFork0_thidvar0_2 1) (= v_multThread1of1ForFork0_b_4 v_ULTIMATE.start_y_3)) InVars {ULTIMATE.start_y=v_ULTIMATE.start_y_3, ULTIMATE.start_x=v_ULTIMATE.start_x_3} OutVars{multThread1of1ForFork0_thidvar0=v_multThread1of1ForFork0_thidvar0_2, multThread1of1ForFork0_b=v_multThread1of1ForFork0_b_4, multThread1of1ForFork0_a=v_multThread1of1ForFork0_a_6, ULTIMATE.start_y=v_ULTIMATE.start_y_3, ULTIMATE.start_x=v_ULTIMATE.start_x_3, multThread1of1ForFork0_z=v_multThread1of1ForFork0_z_8, multThread1of1ForFork0_i=v_multThread1of1ForFork0_i_12} AuxVars[] AssignedVars[multThread1of1ForFork0_thidvar0, multThread1of1ForFork0_b, multThread1of1ForFork0_a, multThread1of1ForFork0_z, multThread1of1ForFork0_i] 185#[L19-1, $Ultimate##0]don't care [55] L19-1-->$Ultimate##0: Formula: (and (= 2 v_multThread1of1ForFork1_thidvar1_2) (= 2 v_multThread1of1ForFork1_thidvar0_2) (= v_multThread1of1ForFork1_a_6 v_ULTIMATE.start_y_5) (= v_multThread1of1ForFork1_b_4 v_ULTIMATE.start_x_5)) InVars {ULTIMATE.start_y=v_ULTIMATE.start_y_5, ULTIMATE.start_x=v_ULTIMATE.start_x_5} OutVars{multThread1of1ForFork1_b=v_multThread1of1ForFork1_b_4, multThread1of1ForFork1_a=v_multThread1of1ForFork1_a_6, multThread1of1ForFork1_thidvar0=v_multThread1of1ForFork1_thidvar0_2, multThread1of1ForFork1_thidvar1=v_multThread1of1ForFork1_thidvar1_2, ULTIMATE.start_y=v_ULTIMATE.start_y_5, ULTIMATE.start_x=v_ULTIMATE.start_x_5, multThread1of1ForFork1_z=v_multThread1of1ForFork1_z_8, multThread1of1ForFork1_i=v_multThread1of1ForFork1_i_12} AuxVars[] AssignedVars[multThread1of1ForFork1_b, multThread1of1ForFork1_a, multThread1of1ForFork1_thidvar0, multThread1of1ForFork1_thidvar1, multThread1of1ForFork1_z, multThread1of1ForFork1_i] 177#[L20, $Ultimate##0, $Ultimate##0]don't care [60] $Ultimate##0-->L32-1: Formula: (and (= v_multThread1of1ForFork1_z_11 0) (= v_multThread1of1ForFork1_i_13 0)) InVars {} OutVars{multThread1of1ForFork1_z=v_multThread1of1ForFork1_z_11, multThread1of1ForFork1_i=v_multThread1of1ForFork1_i_13} AuxVars[] AssignedVars[multThread1of1ForFork1_z, multThread1of1ForFork1_i] 149#[L20, L32-1, $Ultimate##0]don't care [2023-10-12 17:11:54,916 INFO L750 eck$LassoCheckResult]: Loop: 149#[L20, L32-1, $Ultimate##0]don't care [66] L32-1-->L32-1: Formula: (and (< v_multThread1of1ForFork1_i_20 v_multThread1of1ForFork1_a_11) (= (+ v_multThread1of1ForFork1_i_20 1) v_multThread1of1ForFork1_i_19) (= (+ v_multThread1of1ForFork1_b_7 v_multThread1of1ForFork1_z_18) v_multThread1of1ForFork1_z_17)) InVars {multThread1of1ForFork1_b=v_multThread1of1ForFork1_b_7, multThread1of1ForFork1_a=v_multThread1of1ForFork1_a_11, multThread1of1ForFork1_z=v_multThread1of1ForFork1_z_18, multThread1of1ForFork1_i=v_multThread1of1ForFork1_i_20} OutVars{multThread1of1ForFork1_b=v_multThread1of1ForFork1_b_7, multThread1of1ForFork1_a=v_multThread1of1ForFork1_a_11, multThread1of1ForFork1_z=v_multThread1of1ForFork1_z_17, multThread1of1ForFork1_i=v_multThread1of1ForFork1_i_19} AuxVars[] AssignedVars[multThread1of1ForFork1_z, multThread1of1ForFork1_i] 149#[L20, L32-1, $Ultimate##0]don't care [2023-10-12 17:11:54,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:11:54,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2911673, now seen corresponding path program 1 times [2023-10-12 17:11:54,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:11:54,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794171995] [2023-10-12 17:11:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:11:54,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:11:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:54,922 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:11:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:54,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:11:54,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:11:54,926 INFO L85 PathProgramCache]: Analyzing trace with hash 97, now seen corresponding path program 1 times [2023-10-12 17:11:54,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:11:54,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646663547] [2023-10-12 17:11:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:11:54,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:11:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:54,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:11:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:54,932 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:11:54,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:11:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash 90261929, now seen corresponding path program 1 times [2023-10-12 17:11:54,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:11:54,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900367325] [2023-10-12 17:11:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:11:54,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:11:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:54,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:11:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:11:54,944 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:11:54,966 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:11:54,966 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:11:54,966 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:11:54,966 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:11:54,966 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:11:54,966 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:54,967 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:11:54,967 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:11:54,967 INFO L133 ssoRankerPreferences]: Filename of dumped script: concurrent_mult.bpl_BEv2_Iteration2_Loop [2023-10-12 17:11:54,967 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:11:54,967 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:11:54,968 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:11:54,973 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:11:55,005 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:11:55,006 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:11:55,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:55,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:55,007 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:55,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-10-12 17:11:55,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:11:55,039 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:11:55,047 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:11:55,048 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {multThread1of1ForFork1_b=0, multThread1of1ForFork1_z=0} Honda state: {multThread1of1ForFork1_b=0, multThread1of1ForFork1_z=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:11:55,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:55,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:55,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:55,054 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:55,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-10-12 17:11:55,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:11:55,057 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:11:55,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:55,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:55,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:55,092 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:55,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-10-12 17:11:55,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:11:55,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:11:55,206 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:11:55,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:55,209 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:11:55,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:11:55,210 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:11:55,210 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:11:55,210 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:11:55,210 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:55,210 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:11:55,210 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:11:55,210 INFO L133 ssoRankerPreferences]: Filename of dumped script: concurrent_mult.bpl_BEv2_Iteration2_Loop [2023-10-12 17:11:55,210 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:11:55,210 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:11:55,211 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:11:55,219 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:11:55,253 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:11:55,255 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:11:55,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:55,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:55,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:55,280 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:11:55,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:11:55,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:11:55,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:11:55,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:11:55,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:11:55,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:11:55,290 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:11:55,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-10-12 17:11:55,309 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:11:55,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:55,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:55,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:55,313 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:55,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-10-12 17:11:55,316 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:11:55,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:11:55,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:11:55,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:11:55,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:11:55,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:11:55,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:11:55,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:11:55,334 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:11:55,337 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:11:55,337 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:11:55,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:11:55,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:11:55,345 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:11:55,350 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:11:55,350 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:11:55,350 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:11:55,350 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(multThread1of1ForFork1_i, multThread1of1ForFork1_a) = -1*multThread1of1ForFork1_i + 1*multThread1of1ForFork1_a Supporting invariants [] [2023-10-12 17:11:55,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-10-12 17:11:55,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:55,358 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:11:55,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:11:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:11:55,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:11:55,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:11:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:11:55,401 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:11:55,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:11:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:11:55,403 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:11:55,404 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 47 transitions. cyclomatic complexity: 34 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:11:55,439 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 47 transitions. cyclomatic complexity: 34. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 81 transitions. Complement of second has 4 states. [2023-10-12 17:11:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:11:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:11:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 17 transitions. [2023-10-12 17:11:55,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:11:55,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:11:55,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:11:55,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:11:55,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:11:55,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:11:55,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 81 transitions. [2023-10-12 17:11:55,445 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:11:55,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2023-10-12 17:11:55,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:11:55,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:11:55,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:11:55,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:11:55,445 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:11:55,446 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:11:55,446 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:11:55,446 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:11:55,446 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:11:55,446 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:11:55,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:11:55,451 INFO L201 PluginConnector]: Adding new model concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:11:55 BoogieIcfgContainer [2023-10-12 17:11:55,451 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:11:55,452 INFO L158 Benchmark]: Toolchain (without parser) took 2357.69ms. Allocated memory was 173.0MB in the beginning and 249.6MB in the end (delta: 76.5MB). Free memory was 124.6MB in the beginning and 144.5MB in the end (delta: -20.0MB). Peak memory consumption was 56.5MB. Max. memory is 8.0GB. [2023-10-12 17:11:55,452 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.29ms. Allocated memory is still 173.0MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:11:55,456 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.68ms. Allocated memory is still 173.0MB. Free memory was 124.6MB in the beginning and 123.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:11:55,460 INFO L158 Benchmark]: Boogie Preprocessor took 18.09ms. Allocated memory is still 173.0MB. Free memory was 123.1MB in the beginning and 122.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:11:55,461 INFO L158 Benchmark]: RCFGBuilder took 179.83ms. Allocated memory is still 173.0MB. Free memory was 122.1MB in the beginning and 113.5MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-10-12 17:11:55,462 INFO L158 Benchmark]: BuchiAutomizer took 2125.75ms. Allocated memory was 173.0MB in the beginning and 249.6MB in the end (delta: 76.5MB). Free memory was 113.5MB in the beginning and 144.5MB in the end (delta: -31.0MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. [2023-10-12 17:11:55,469 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 0.29ms. Allocated memory is still 173.0MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.68ms. Allocated memory is still 173.0MB. Free memory was 124.6MB in the beginning and 123.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.09ms. Allocated memory is still 173.0MB. Free memory was 123.1MB in the beginning and 122.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 179.83ms. Allocated memory is still 173.0MB. Free memory was 122.1MB in the beginning and 113.5MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2125.75ms. Allocated memory was 173.0MB in the beginning and 249.6MB in the end (delta: 76.5MB). Free memory was 113.5MB in the beginning and 144.5MB in the end (delta: -31.0MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + a and consists of 3 locations. One deterministic module has affine ranking function -1 * i + a and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 1 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp66 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 186ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 28 PlacesBefore, 18 PlacesAfterwards, 23 TransitionsBefore, 13 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 76 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 76, independent: 76, independent conditional: 0, independent unconditional: 76, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 68, independent: 68, independent conditional: 0, independent unconditional: 68, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 68, independent: 68, independent conditional: 0, independent unconditional: 68, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 76, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 68, unknown conditional: 0, unknown unconditional: 68] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:11:55,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:55,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-10-12 17:11:55,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...