/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/buchiAutomizer/concurrent-buchi-pn-semanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/concurrent_increment_nonterminating.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.fs.omega-petrinet-ed1a3e5-m [2022-09-29 14:45:35,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-29 14:45:35,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-29 14:45:35,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-29 14:45:35,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-29 14:45:35,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-29 14:45:35,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-29 14:45:35,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-29 14:45:35,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-29 14:45:35,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-29 14:45:35,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-29 14:45:35,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-09-29 14:45:35,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-29 14:45:35,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-29 14:45:35,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-29 14:45:35,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-buchi-pn-semanticLbe.epf [2022-09-29 14:45:35,807 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-29 14:45:35,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-29 14:45:35,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-29 14:45:35,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-29 14:45:35,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-29 14:45:35,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-29 14:45:35,809 INFO L138 SettingsManager]: * Use SBE=true [2022-09-29 14:45:35,809 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-09-29 14:45:35,809 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-09-29 14:45:35,809 INFO L138 SettingsManager]: * Use old map elimination=false [2022-09-29 14:45:35,810 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-09-29 14:45:35,810 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-09-29 14:45:35,810 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-09-29 14:45:35,810 INFO L138 SettingsManager]: * Automaton type for concurrent programs=BUCHI_PETRI_NET [2022-09-29 14:45:35,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-29 14:45:35,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-29 14:45:35,811 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-09-29 14:45:35,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-29 14:45:35,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-29 14:45:35,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-29 14:45:35,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-09-29 14:45:35,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-09-29 14:45:35,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-09-29 14:45:35,812 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-29 14:45:35,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-29 14:45:35,812 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-09-29 14:45:35,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-29 14:45:35,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-09-29 14:45:35,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-29 14:45:35,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-29 14:45:35,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-29 14:45:35,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-29 14:45:35,813 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-09-29 14:45:35,814 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-29 14:45:36,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-29 14:45:36,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-29 14:45:36,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-29 14:45:36,037 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-29 14:45:36,038 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-29 14:45:36,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_increment_nonterminating.bpl [2022-09-29 14:45:36,039 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_increment_nonterminating.bpl' [2022-09-29 14:45:36,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-29 14:45:36,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-09-29 14:45:36,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-29 14:45:36,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-29 14:45:36,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-29 14:45:36,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/1) ... [2022-09-29 14:45:36,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/1) ... [2022-09-29 14:45:36,076 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-09-29 14:45:36,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-29 14:45:36,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-29 14:45:36,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-29 14:45:36,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-29 14:45:36,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/1) ... [2022-09-29 14:45:36,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/1) ... [2022-09-29 14:45:36,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/1) ... [2022-09-29 14:45:36,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/1) ... [2022-09-29 14:45:36,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/1) ... [2022-09-29 14:45:36,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/1) ... [2022-09-29 14:45:36,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/1) ... [2022-09-29 14:45:36,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-29 14:45:36,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-29 14:45:36,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-29 14:45:36,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-29 14:45:36,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/1) ... [2022-09-29 14:45:36,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:36,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 14:45:36,112 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) [2022-09-29 14:45:36,134 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 [2022-09-29 14:45:36,148 INFO L124 BoogieDeclarations]: Specification and implementation of procedure dec given in one single declaration [2022-09-29 14:45:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2022-09-29 14:45:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2022-09-29 14:45:36,149 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-09-29 14:45:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-29 14:45:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-29 14:45:36,149 INFO L124 BoogieDeclarations]: Specification and implementation of procedure inc given in one single declaration [2022-09-29 14:45:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2022-09-29 14:45:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2022-09-29 14:45:36,150 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-29 14:45:36,181 INFO L234 CfgBuilder]: Building ICFG [2022-09-29 14:45:36,182 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-29 14:45:36,236 INFO L275 CfgBuilder]: Performing block encoding [2022-09-29 14:45:36,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-29 14:45:36,241 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-29 14:45:36,242 INFO L202 PluginConnector]: Adding new model concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 02:45:36 BoogieIcfgContainer [2022-09-29 14:45:36,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-29 14:45:36,243 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-09-29 14:45:36,243 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-09-29 14:45:36,246 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-09-29 14:45:36,247 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 14:45:36,247 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 02:45:36" (1/2) ... [2022-09-29 14:45:36,248 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@344f8dcc and model type concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.09 02:45:36, skipping insertion in model container [2022-09-29 14:45:36,248 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-09-29 14:45:36,248 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 02:45:36" (2/2) ... [2022-09-29 14:45:36,249 INFO L322 chiAutomizerObserver]: Analyzing ICFG concurrent_increment_nonterminating.bpl [2022-09-29 14:45:36,307 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-29 14:45:36,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 18 transitions, 52 flow [2022-09-29 14:45:36,350 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 14:45:36,351 INFO L123 PetriNetUnfolderBase]: 2/14 cut-off events. [2022-09-29 14:45:36,351 INFO L124 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2022-09-29 14:45:36,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 14 events. 2/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2022-09-29 14:45:36,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 18 transitions, 52 flow [2022-09-29 14:45:36,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 14 transitions, 40 flow [2022-09-29 14:45:36,361 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-09-29 14:45:36,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 14 transitions, 40 flow [2022-09-29 14:45:36,384 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 14 transitions, 40 flow [2022-09-29 14:45:36,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 19 places, 14 transitions, 40 flow [2022-09-29 14:45:36,401 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 14:45:36,401 INFO L123 PetriNetUnfolderBase]: 2/14 cut-off events. [2022-09-29 14:45:36,402 INFO L124 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2022-09-29 14:45:36,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 14 events. 2/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2022-09-29 14:45:36,402 INFO L116 LiptonReduction]: Number of co-enabled transitions 48 [2022-09-29 14:45:36,501 INFO L131 LiptonReduction]: Checked pairs total: 43 [2022-09-29 14:45:36,501 INFO L133 LiptonReduction]: Total number of compositions: 4 [2022-09-29 14:45:36,511 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-09-29 14:45:36,511 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-09-29 14:45:36,511 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-09-29 14:45:36,511 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-09-29 14:45:36,511 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-09-29 14:45:36,511 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-09-29 14:45:36,511 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-09-29 14:45:36,511 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2022-09-29 14:45:36,512 INFO L68 IsEmptyBuchi]: Start isEmptyBuchi. Operand has 15 places, 10 transitions, 32 flow [2022-09-29 14:45:36,514 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 15 places, 10 transitions, 32 flow [2022-09-29 14:45:36,515 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:36,515 INFO L157 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2022-09-29 14:45:36,515 INFO L123 PetriNetUnfolderBase]: 0/2 cut-off events. [2022-09-29 14:45:36,515 INFO L124 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2022-09-29 14:45:36,515 INFO L78 IsEmptyBuchi]: Finished isEmptyBuchi language is not empty [2022-09-29 14:45:36,517 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-09-29 14:45:36,517 INFO L68 IsEmptyBuchi]: Start isEmptyBuchi. Operand has 15 places, 10 transitions, 32 flow [2022-09-29 14:45:36,518 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 15 places, 10 transitions, 32 flow [2022-09-29 14:45:36,518 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:36,518 INFO L157 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2022-09-29 14:45:36,518 INFO L123 PetriNetUnfolderBase]: 0/2 cut-off events. [2022-09-29 14:45:36,518 INFO L124 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2022-09-29 14:45:36,519 INFO L78 IsEmptyBuchi]: Finished isEmptyBuchi language is not empty [2022-09-29 14:45:36,522 INFO L733 eck$LassoCheckResult]: Stem: 25#[ULTIMATE.startENTRY]true [21] ULTIMATE.startENTRY-->L15: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x] 27#[L15]true [44] L15-->L24: Formula: (= v_incThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{incThread1of1ForFork0_thidvar0=v_incThread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[incThread1of1ForFork0_thidvar0] 29#[L24, L15-1]true [2022-09-29 14:45:36,522 INFO L735 eck$LassoCheckResult]: Loop: 29#[L24, L15-1]true [53] L24-->L24: Formula: (and (< v_x_35 v_n_9) (= v_x_34 (+ v_x_35 1))) InVars {n=v_n_9, x=v_x_35} OutVars{n=v_n_9, x=v_x_34} AuxVars[] AssignedVars[x] 29#[L24, L15-1]true [2022-09-29 14:45:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:45:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1656, now seen corresponding path program 1 times [2022-09-29 14:45:36,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:45:36,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360992497] [2022-09-29 14:45:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:45:36,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:45:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:36,608 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 14:45:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:36,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 14:45:36,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:45:36,630 INFO L85 PathProgramCache]: Analyzing trace with hash 84, now seen corresponding path program 1 times [2022-09-29 14:45:36,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:45:36,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574443481] [2022-09-29 14:45:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:45:36,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:45:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:36,642 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 14:45:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:36,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 14:45:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:45:36,653 INFO L85 PathProgramCache]: Analyzing trace with hash 51389, now seen corresponding path program 1 times [2022-09-29 14:45:36,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:45:36,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534940518] [2022-09-29 14:45:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:45:36,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:45:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:36,663 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 14:45:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:36,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 14:45:36,719 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 14:45:36,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 14:45:36,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 14:45:36,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 14:45:36,720 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-09-29 14:45:36,720 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:36,720 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 14:45:36,720 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 14:45:36,720 INFO L133 ssoRankerPreferences]: Filename of dumped script: concurrent_increment_nonterminating.bpl_BEv2_Iteration1_Loop [2022-09-29 14:45:36,721 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 14:45:36,721 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 14:45:36,731 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 14:45:36,765 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 14:45:36,766 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-09-29 14:45:36,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:36,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 14:45:36,769 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) [2022-09-29 14:45:36,796 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 [2022-09-29 14:45:36,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 14:45:36,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 14:45:36,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-09-29 14:45:36,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:36,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 14:45:36,831 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) [2022-09-29 14:45:36,831 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 [2022-09-29 14:45:36,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-09-29 14:45:36,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 14:45:36,966 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-09-29 14:45:36,969 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 [2022-09-29 14:45:36,970 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 14:45:36,970 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 14:45:36,970 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 14:45:36,970 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 14:45:36,970 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-09-29 14:45:36,970 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:36,970 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 14:45:36,970 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 14:45:36,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: concurrent_increment_nonterminating.bpl_BEv2_Iteration1_Loop [2022-09-29 14:45:36,970 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 14:45:36,971 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 14:45:36,971 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 14:45:37,000 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 14:45:37,003 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-09-29 14:45:37,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:37,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 14:45:37,024 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) [2022-09-29 14:45:37,029 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 [2022-09-29 14:45:37,030 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 [2022-09-29 14:45:37,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-09-29 14:45:37,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-09-29 14:45:37,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-09-29 14:45:37,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-09-29 14:45:37,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-09-29 14:45:37,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-09-29 14:45:37,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-09-29 14:45:37,057 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-09-29 14:45:37,062 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-09-29 14:45:37,063 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-09-29 14:45:37,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:37,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 14:45:37,065 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) [2022-09-29 14:45:37,066 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 [2022-09-29 14:45:37,067 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-09-29 14:45:37,068 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-09-29 14:45:37,068 INFO L513 LassoAnalysis]: Proved termination. [2022-09-29 14:45:37,068 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(x, n) = -1*x + 1*n Supporting invariants [] [2022-09-29 14:45:37,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-09-29 14:45:37,116 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-09-29 14:45:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:45:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 14:45:37,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2022-09-29 14:45:37,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 14:45:37,190 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 [2022-09-29 14:45:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 14:45:37,198 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-29 14:45:37,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 14:45:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 14:45:37,240 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 [2022-09-29 14:45:37,241 INFO L162 BuchiComplementFKV]: Start buchiComplementFKV with optimization HEIMAT2. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-09-29 14:45:37,300 INFO L171 BuchiComplementFKV]: Finished buchiComplementFKV with optimization HEIMAT2. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 6 states and 184 transitions.4 powerset states2 rank states. The highest rank that occured is 1 [2022-09-29 14:45:37,301 INFO L54 IntersectBuchiEager]: Starting Intersection [2022-09-29 14:45:37,303 INFO L61 IntersectBuchiEager]: Exiting Intersection [2022-09-29 14:45:37,304 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 [2022-09-29 14:45:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-09-29 14:45:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2022-09-29 14:45:37,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 60 transitions. Stem has 2 letters. Loop has 1 letters. [2022-09-29 14:45:37,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 14:45:37,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 60 transitions. Stem has 3 letters. Loop has 1 letters. [2022-09-29 14:45:37,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 14:45:37,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 60 transitions. Stem has 2 letters. Loop has 2 letters. [2022-09-29 14:45:37,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 14:45:37,311 INFO L428 stractBuchiCegarLoop]: Abstraction has has 27 places, 158 transitions, 836 flow [2022-09-29 14:45:37,311 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-09-29 14:45:37,311 INFO L68 IsEmptyBuchi]: Start isEmptyBuchi. Operand has 27 places, 158 transitions, 836 flow [2022-09-29 14:45:37,312 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 27 places, 158 transitions, 836 flow [2022-09-29 14:45:37,313 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:37,315 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 27 places, 158 transitions, 836 flow [2022-09-29 14:45:37,316 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:37,320 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 27 places, 158 transitions, 836 flow [2022-09-29 14:45:37,321 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:37,322 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 27 places, 158 transitions, 836 flow [2022-09-29 14:45:37,323 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:37,323 INFO L157 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2022-09-29 14:45:37,323 INFO L123 PetriNetUnfolderBase]: 29/54 cut-off events. [2022-09-29 14:45:37,323 INFO L124 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2022-09-29 14:45:37,323 INFO L78 IsEmptyBuchi]: Finished isEmptyBuchi language is not empty [2022-09-29 14:45:37,323 INFO L733 eck$LassoCheckResult]: Stem: 25#[ULTIMATE.startENTRY]true [21] ULTIMATE.startENTRY-->L15: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x] 27#[L15]true [44] L15-->L24: Formula: (= v_incThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{incThread1of1ForFork0_thidvar0=v_incThread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[incThread1of1ForFork0_thidvar0] 29#[L24, L15-1]true [47] L15-1-->L32: Formula: (and (= v_decThread1of1ForFork1_thidvar1_2 2) (= v_decThread1of1ForFork1_thidvar0_2 2)) InVars {} OutVars{decThread1of1ForFork1_thidvar0=v_decThread1of1ForFork1_thidvar0_2, decThread1of1ForFork1_thidvar1=v_decThread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[decThread1of1ForFork1_thidvar0, decThread1of1ForFork1_thidvar1] 76#[L16, L32, L24]true [51] L32-->L32: Formula: (and (= (+ (- 1) v_x_21) v_x_20) (< 0 v_x_21)) InVars {x=v_x_21} OutVars{x=v_x_20} AuxVars[] AssignedVars[x] 76#[L16, L32, L24]true [2022-09-29 14:45:37,323 INFO L735 eck$LassoCheckResult]: Loop: 76#[L16, L32, L24]true [53] L24-->L24: Formula: (and (< v_x_35 v_n_9) (= v_x_34 (+ v_x_35 1))) InVars {n=v_n_9, x=v_x_35} OutVars{n=v_n_9, x=v_x_34} AuxVars[] AssignedVars[x] 76#[L16, L32, L24]true [53] L24-->L24: Formula: (and (< v_x_35 v_n_9) (= v_x_34 (+ v_x_35 1))) InVars {n=v_n_9, x=v_x_35} OutVars{n=v_n_9, x=v_x_34} AuxVars[] AssignedVars[x] 76#[L16, L32, L24]true [2022-09-29 14:45:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:45:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1592924, now seen corresponding path program 1 times [2022-09-29 14:45:37,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:45:37,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814872273] [2022-09-29 14:45:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:45:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:45:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 14:45:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 14:45:37,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-29 14:45:37,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814872273] [2022-09-29 14:45:37,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814872273] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-29 14:45:37,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-29 14:45:37,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-09-29 14:45:37,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849926172] [2022-09-29 14:45:37,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-29 14:45:37,346 INFO L738 eck$LassoCheckResult]: stem already infeasible [2022-09-29 14:45:37,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:45:37,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2657, now seen corresponding path program 2 times [2022-09-29 14:45:37,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:45:37,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518817141] [2022-09-29 14:45:37,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:45:37,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:45:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:37,350 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 14:45:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:37,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 14:45:37,375 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 14:45:37,375 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 14:45:37,376 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 14:45:37,376 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 14:45:37,376 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-09-29 14:45:37,376 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:37,376 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 14:45:37,376 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 14:45:37,376 INFO L133 ssoRankerPreferences]: Filename of dumped script: concurrent_increment_nonterminating.bpl_BEv2_Iteration2_Loop [2022-09-29 14:45:37,376 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 14:45:37,376 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 14:45:37,376 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 14:45:37,389 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 14:45:37,390 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-09-29 14:45:37,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:37,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 14:45:37,391 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) [2022-09-29 14:45:37,392 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 [2022-09-29 14:45:37,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-09-29 14:45:37,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 14:45:37,441 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 [2022-09-29 14:45:37,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:37,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 14:45:37,443 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) [2022-09-29 14:45:37,444 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 [2022-09-29 14:45:37,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-09-29 14:45:37,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-09-29 14:45:37,717 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-09-29 14:45:37,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-09-29 14:45:37,723 INFO L210 LassoAnalysis]: Preferences: [2022-09-29 14:45:37,723 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-09-29 14:45:37,723 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-09-29 14:45:37,723 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-09-29 14:45:37,723 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-09-29 14:45:37,723 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:37,723 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-09-29 14:45:37,723 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-09-29 14:45:37,723 INFO L133 ssoRankerPreferences]: Filename of dumped script: concurrent_increment_nonterminating.bpl_BEv2_Iteration2_Loop [2022-09-29 14:45:37,723 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-09-29 14:45:37,723 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-09-29 14:45:37,724 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-09-29 14:45:37,746 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-09-29 14:45:37,746 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-09-29 14:45:37,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:37,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 14:45:37,751 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) [2022-09-29 14:45:37,753 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 [2022-09-29 14:45:37,754 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 [2022-09-29 14:45:37,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-09-29 14:45:37,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-09-29 14:45:37,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-09-29 14:45:37,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-09-29 14:45:37,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-09-29 14:45:37,764 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-09-29 14:45:37,764 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-09-29 14:45:37,775 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-09-29 14:45:37,778 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-09-29 14:45:37,778 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-09-29 14:45:37,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-09-29 14:45:37,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-29 14:45:37,779 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) [2022-09-29 14:45:37,780 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 [2022-09-29 14:45:37,781 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-09-29 14:45:37,781 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-09-29 14:45:37,781 INFO L513 LassoAnalysis]: Proved termination. [2022-09-29 14:45:37,781 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(x, n) = -1*x + 1*n Supporting invariants [] [2022-09-29 14:45:37,796 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 [2022-09-29 14:45:37,797 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-09-29 14:45:37,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:45:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 14:45:37,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2022-09-29 14:45:37,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 14:45:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-29 14:45:37,819 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-29 14:45:37,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-29 14:45:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-29 14:45:37,844 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 [2022-09-29 14:45:37,844 INFO L162 BuchiComplementFKV]: Start buchiComplementFKV with optimization HEIMAT2. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 14:45:37,944 INFO L171 BuchiComplementFKV]: Finished buchiComplementFKV with optimization HEIMAT2. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 244 transitions.5 powerset states3 rank states. The highest rank that occured is 1 [2022-09-29 14:45:37,945 INFO L54 IntersectBuchiEager]: Starting Intersection [2022-09-29 14:45:37,975 INFO L61 IntersectBuchiEager]: Exiting Intersection [2022-09-29 14:45:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-09-29 14:45:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-29 14:45:37,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2022-09-29 14:45:37,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 81 transitions. Stem has 4 letters. Loop has 2 letters. [2022-09-29 14:45:37,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 14:45:37,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 81 transitions. Stem has 6 letters. Loop has 2 letters. [2022-09-29 14:45:37,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 14:45:37,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 81 transitions. Stem has 4 letters. Loop has 4 letters. [2022-09-29 14:45:37,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-09-29 14:45:37,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-29 14:45:37,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-29 14:45:37,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-29 14:45:37,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 3432 transitions, 25488 flow. Second operand has 3 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) [2022-09-29 14:45:37,983 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2022-09-29 14:45:37,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-29 14:45:38,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-09-29 14:45:38,231 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 14:45:38,232 INFO L123 PetriNetUnfolderBase]: 238/463 cut-off events. [2022-09-29 14:45:38,232 INFO L124 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2022-09-29 14:45:38,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2052 conditions, 463 events. 238/463 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2014 event pairs, 4 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 908. Up to 258 conditions per place. [2022-09-29 14:45:38,238 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 232 selfloop transitions, 50 changer transitions 35/317 dead transitions. [2022-09-29 14:45:38,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-29 14:45:38,242 INFO L428 stractBuchiCegarLoop]: Abstraction has has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,242 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-09-29 14:45:38,242 INFO L68 IsEmptyBuchi]: Start isEmptyBuchi. Operand has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,245 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,249 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:38,251 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,253 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:38,254 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,256 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:38,262 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,264 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:38,266 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,272 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:38,280 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,290 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:38,295 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,296 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:38,304 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,306 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:38,312 INFO L175 PetriNetUnfolderBase]: Searched whole Unfolding. [2022-09-29 14:45:38,312 INFO L123 PetriNetUnfolderBase]: 238/463 cut-off events. [2022-09-29 14:45:38,312 INFO L124 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2022-09-29 14:45:38,313 INFO L47 CFPrefixIsEmptyBuchi]: Starting emptiness check. [2022-09-29 14:45:38,313 INFO L62 CFPrefixIsEmptyBuchi]: Starting cutoff event analysis. [2022-09-29 14:45:38,314 INFO L72 CFPrefixIsEmptyBuchi]: Ended cutoff event analysis. [2022-09-29 14:45:38,314 INFO L76 CFPrefixIsEmptyBuchi]: Type 1 Lasso search started. [2022-09-29 14:45:38,314 INFO L87 CFPrefixIsEmptyBuchi]: Type 1 Lasso search ended. [2022-09-29 14:45:38,314 INFO L107 CFPrefixIsEmptyBuchi]: Type 3 Lasso search started. [2022-09-29 14:45:38,325 INFO L76 AcceptsInfiniteWords]: Start buchiAccepts. Operand has 36 places, 317 transitions, 2929 flow [2022-09-29 14:45:38,326 INFO L82 AcceptsInfiniteWords]: Finished buchiAccepts. [2022-09-29 14:45:38,326 INFO L50 CFPrefixIsEmptyBuchi]: Finished emptiness check, language is not empty [2022-09-29 14:45:38,326 INFO L78 IsEmptyBuchi]: Finished isEmptyBuchi language is not empty [2022-09-29 14:45:38,327 INFO L733 eck$LassoCheckResult]: Stem: 25#[ULTIMATE.startENTRY]true [21] ULTIMATE.startENTRY-->L15: Formula: (= v_x_5 0) InVars {} OutVars{x=v_x_5} AuxVars[] AssignedVars[x] 27#[L15]true [44] L15-->L24: Formula: (= v_incThread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{incThread1of1ForFork0_thidvar0=v_incThread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[incThread1of1ForFork0_thidvar0] 29#[L24, L15-1]true [47] L15-1-->L32: Formula: (and (= v_decThread1of1ForFork1_thidvar1_2 2) (= v_decThread1of1ForFork1_thidvar0_2 2)) InVars {} OutVars{decThread1of1ForFork1_thidvar0=v_decThread1of1ForFork1_thidvar0_2, decThread1of1ForFork1_thidvar1=v_decThread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[decThread1of1ForFork1_thidvar0, decThread1of1ForFork1_thidvar1] 76#[L16, L32, L24]true [53] L24-->L24: Formula: (and (< v_x_35 v_n_9) (= v_x_34 (+ v_x_35 1))) InVars {n=v_n_9, x=v_x_35} OutVars{n=v_n_9, x=v_x_34} AuxVars[] AssignedVars[x] 76#[L16, L32, L24]true [51] L32-->L32: Formula: (and (= (+ (- 1) v_x_21) v_x_20) (< 0 v_x_21)) InVars {x=v_x_21} OutVars{x=v_x_20} AuxVars[] AssignedVars[x] 76#[L16, L32, L24]true [53] L24-->L24: Formula: (and (< v_x_35 v_n_9) (= v_x_34 (+ v_x_35 1))) InVars {n=v_n_9, x=v_x_35} OutVars{n=v_n_9, x=v_x_34} AuxVars[] AssignedVars[x] 76#[L16, L32, L24]true [51] L32-->L32: Formula: (and (= (+ (- 1) v_x_21) v_x_20) (< 0 v_x_21)) InVars {x=v_x_21} OutVars{x=v_x_20} AuxVars[] AssignedVars[x] 76#[L16, L32, L24]true [2022-09-29 14:45:38,327 INFO L735 eck$LassoCheckResult]: Loop: 76#[L16, L32, L24]true [53] L24-->L24: Formula: (and (< v_x_35 v_n_9) (= v_x_34 (+ v_x_35 1))) InVars {n=v_n_9, x=v_x_35} OutVars{n=v_n_9, x=v_x_34} AuxVars[] AssignedVars[x] 76#[L16, L32, L24]true [51] L32-->L32: Formula: (and (= (+ (- 1) v_x_21) v_x_20) (< 0 v_x_21)) InVars {x=v_x_21} OutVars{x=v_x_20} AuxVars[] AssignedVars[x] 76#[L16, L32, L24]true [2022-09-29 14:45:38,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:45:38,327 INFO L85 PathProgramCache]: Analyzing trace with hash 210268915, now seen corresponding path program 1 times [2022-09-29 14:45:38,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:45:38,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923334752] [2022-09-29 14:45:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:45:38,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:45:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:38,346 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 14:45:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:38,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 14:45:38,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:45:38,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2655, now seen corresponding path program 1 times [2022-09-29 14:45:38,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:45:38,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954620234] [2022-09-29 14:45:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:45:38,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:45:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:38,357 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 14:45:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:38,359 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 14:45:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-29 14:45:38,359 INFO L85 PathProgramCache]: Analyzing trace with hash 204966097, now seen corresponding path program 2 times [2022-09-29 14:45:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-29 14:45:38,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270271510] [2022-09-29 14:45:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-29 14:45:38,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-29 14:45:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:38,369 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-29 14:45:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-29 14:45:38,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-29 14:45:38,464 INFO L202 PluginConnector]: Adding new model concurrent_increment_nonterminating.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.09 02:45:38 BoogieIcfgContainer [2022-09-29 14:45:38,464 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-09-29 14:45:38,465 INFO L158 Benchmark]: Toolchain (without parser) took 2409.80ms. Allocated memory was 198.2MB in the beginning and 248.5MB in the end (delta: 50.3MB). Free memory was 155.2MB in the beginning and 179.3MB in the end (delta: -24.1MB). Peak memory consumption was 27.7MB. Max. memory is 8.0GB. [2022-09-29 14:45:38,465 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 198.2MB. Free memory was 156.2MB in the beginning and 156.1MB in the end (delta: 75.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-29 14:45:38,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.85ms. Allocated memory is still 198.2MB. Free memory was 155.2MB in the beginning and 153.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-29 14:45:38,469 INFO L158 Benchmark]: Boogie Preprocessor took 12.43ms. Allocated memory is still 198.2MB. Free memory was 153.6MB in the beginning and 152.6MB in the end (delta: 944.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-29 14:45:38,469 INFO L158 Benchmark]: RCFGBuilder took 150.75ms. Allocated memory is still 198.2MB. Free memory was 152.6MB in the beginning and 144.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-09-29 14:45:38,469 INFO L158 Benchmark]: BuchiAutomizer took 2221.08ms. Allocated memory was 198.2MB in the beginning and 248.5MB in the end (delta: 50.3MB). Free memory was 144.2MB in the beginning and 179.3MB in the end (delta: -35.1MB). Peak memory consumption was 16.1MB. Max. memory is 8.0GB. [2022-09-29 14:45:38,475 INFO L339 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 0.10ms. Allocated memory is still 198.2MB. Free memory was 156.2MB in the beginning and 156.1MB in the end (delta: 75.9kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.85ms. Allocated memory is still 198.2MB. Free memory was 155.2MB in the beginning and 153.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.43ms. Allocated memory is still 198.2MB. Free memory was 153.6MB in the beginning and 152.6MB in the end (delta: 944.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 150.75ms. Allocated memory is still 198.2MB. Free memory was 152.6MB in the beginning and 144.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2221.08ms. Allocated memory was 198.2MB in the beginning and 248.5MB in the end (delta: 50.3MB). Free memory was 144.2MB in the beginning and 179.3MB in the end (delta: -35.1MB). Peak memory consumption was 16.1MB. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * x + n and consists of 3 locations. One deterministic module has affine ranking function -1 * x + n and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 2929 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 1. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 54 mSDtfsCounter, 132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 63ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 24]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {n=1} State at position 1 is {n=1, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 24]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] 0 x := 0; [L15] FORK 0 fork 1 inc(); [L16] FORK 0 fork 2, 2 dec(); [L24] COND TRUE 1 x < n [L25] 1 x := x + 1; [L32] COND TRUE 2 x > 0 [L33] 2 x := x - 1; [L24] COND TRUE 1 x < n [L25] 1 x := x + 1; [L32] COND TRUE 2 x > 0 [L33] 2 x := x - 1; Loop: [L24] COND TRUE x < n [L25] x := x + 1; [L32] COND TRUE x > 0 [L33] x := x - 1; End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 19 PlacesBefore, 15 PlacesAfterwards, 14 TransitionsBefore, 10 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 43 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 39, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 34, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 34, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 38, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 39, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 34, unknown conditional: 0, unknown unconditional: 34] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 RESULT: Ultimate proved your program to be incorrect! [2022-09-29 14:45:38,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...