/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_AUTOMATON -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:13:33,209 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:13:33,283 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 17:13:33,310 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:13:33,311 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:13:33,312 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:13:33,313 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:13:33,313 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:13:33,314 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:13:33,317 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:13:33,317 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:13:33,318 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:13:33,318 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:13:33,319 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:13:33,320 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:13:33,320 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:13:33,320 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:13:33,321 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:13:33,321 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:13:33,321 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:13:33,321 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:13:33,322 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:13:33,323 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:13:33,323 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:13:33,323 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:13:33,323 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:13:33,324 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:13:33,324 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:13:33,324 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:13:33,324 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:13:33,325 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:13:33,326 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:13:33,326 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:13:33,327 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:13:33,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:13:33,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:13:33,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:13:33,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:13:33,585 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:13:33,586 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:13:33,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl [2023-10-12 17:13:33,587 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl' [2023-10-12 17:13:33,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:13:33,616 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:13:33,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:13:33,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:13:33,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:13:33,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,640 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:13:33,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:13:33,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:13:33,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:13:33,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:13:33,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:13:33,662 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:13:33,662 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:13:33,662 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:13:33,663 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/1) ... [2023-10-12 17:13:33,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:33,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:33,694 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 17:13:33,716 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 17:13:33,726 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:13:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:13:33,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:13:33,730 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:13:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:13:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:13:33,731 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:13:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:13:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:13:33,732 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:13:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:13:33,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:13:33,733 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 17:13:33,773 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:13:33,775 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:13:33,843 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:13:33,849 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:13:33,849 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:13:33,851 INFO L201 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:13:33 BoogieIcfgContainer [2023-10-12 17:13:33,851 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:13:33,852 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:13:33,852 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:13:33,855 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:13:33,856 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:13:33,856 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:13:33" (1/2) ... [2023-10-12 17:13:33,857 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3afa6623 and model type misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:13:33, skipping insertion in model container [2023-10-12 17:13:33,857 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:13:33,857 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:13:33" (2/2) ... [2023-10-12 17:13:33,858 INFO L332 chiAutomizerObserver]: Analyzing ICFG misc-4.wvr.bpl [2023-10-12 17:13:33,909 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-10-12 17:13:33,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 34 transitions, 92 flow [2023-10-12 17:13:33,953 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2023-10-12 17:13:33,954 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:13:33,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 4/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-10-12 17:13:33,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 34 transitions, 92 flow [2023-10-12 17:13:33,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 28 transitions, 74 flow [2023-10-12 17:13:33,981 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:13:33,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 28 transitions, 74 flow [2023-10-12 17:13:33,993 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 28 transitions, 74 flow [2023-10-12 17:13:33,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 28 transitions, 74 flow [2023-10-12 17:13:34,000 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2023-10-12 17:13:34,001 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:13:34,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 4/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-10-12 17:13:34,002 INFO L119 LiptonReduction]: Number of co-enabled transitions 264 [2023-10-12 17:13:34,487 INFO L134 LiptonReduction]: Checked pairs total: 405 [2023-10-12 17:13:34,487 INFO L136 LiptonReduction]: Total number of compositions: 12 [2023-10-12 17:13:34,505 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:13:34,505 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:13:34,505 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:13:34,506 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:13:34,506 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:13:34,506 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:13:34,506 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:13:34,506 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:13:34,508 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:13:34,556 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 54 [2023-10-12 17:13:34,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:34,556 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:34,561 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:13:34,561 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-10-12 17:13:34,561 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:13:34,561 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 66 states, but on-demand construction may add more states [2023-10-12 17:13:34,566 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 54 [2023-10-12 17:13:34,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:34,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:34,567 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:13:34,567 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-10-12 17:13:34,570 INFO L748 eck$LassoCheckResult]: Stem: 40#[$Ultimate##0]don't care [64] $Ultimate##0-->L56: Formula: (and (or (and v_d2_5 v_d1_5) (and (not v_d2_5) (not v_d1_5))) v_d1_5 (= v_pos_9 0) v_v_assert_5) InVars {pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} OutVars{pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} AuxVars[] AssignedVars[] 43#[L56]don't care [96] L56-->L17: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0] 45#[L17, L56-1]don't care [2023-10-12 17:13:34,571 INFO L750 eck$LassoCheckResult]: Loop: 45#[L17, L56-1]don't care [105] L17-->L23: Formula: (and (not v_d1_8) v_v_assert_21) InVars {d1=v_d1_8, v_assert=v_v_assert_21} OutVars{d1=v_d1_8, v_assert=v_v_assert_21} AuxVars[] AssignedVars[] 51#[L23, L56-1]don't care [106] L23-->L17: Formula: (and (= (+ v_pos_47 1) v_pos_48) (or (and (not v_d1_10) v_d1_11) (and (not v_d1_11) v_d1_10))) InVars {d1=v_d1_11, pos=v_pos_48} OutVars{d1=v_d1_10, pos=v_pos_47} AuxVars[] AssignedVars[d1, pos] 45#[L17, L56-1]don't care [2023-10-12 17:13:34,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash 3041, now seen corresponding path program 1 times [2023-10-12 17:13:34,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:34,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107457237] [2023-10-12 17:13:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:34,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:34,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:34,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:34,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash 4322, now seen corresponding path program 1 times [2023-10-12 17:13:34,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:34,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516749380] [2023-10-12 17:13:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:34,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:34,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:34,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:34,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2925762, now seen corresponding path program 1 times [2023-10-12 17:13:34,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:34,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663828397] [2023-10-12 17:13:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:34,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:34,748 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 17:13:34,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:13:34,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663828397] [2023-10-12 17:13:34,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663828397] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:13:34,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:13:34,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:13:34,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473076974] [2023-10-12 17:13:34,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:13:34,800 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:34,800 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:34,800 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:34,800 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:34,800 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:13:34,801 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:34,801 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:34,801 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:34,801 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:13:34,801 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:34,802 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:34,812 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 17:13:34,818 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 17:13:34,822 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 17:13:34,856 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:34,856 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:13:34,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:34,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:34,861 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 17:13:34,864 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 17:13:34,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:13:34,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:34,885 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:13:34,885 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep(ite v_assert 1 0)_1=1} Honda state: {v_rep(ite v_assert 1 0)_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:13:34,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:34,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:34,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:34,890 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 17:13:34,891 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 17:13:34,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:13:34,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:34,971 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 17:13:34,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:34,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:34,973 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 17:13:34,979 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 17:13:34,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:13:34,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:35,011 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:13:35,011 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {pos=0} Honda state: {pos=0} Generalized eigenvectors: [{pos=1}, {pos=-1}, {pos=-1}] Lambdas: [1, 0, 1] Nus: [0, 1] [2023-10-12 17:13:35,017 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 17:13:35,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:35,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:35,026 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 17:13:35,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:13:35,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:35,034 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 17:13:35,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-10-12 17:13:35,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:35,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:35,051 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 17:13:35,052 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 17:13:35,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:13:35,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:35,105 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:13:35,109 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 17:13:35,109 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:35,109 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:35,109 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:35,110 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:35,110 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:13:35,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:35,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:35,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:35,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:13:35,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:35,110 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:35,111 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 17:13:35,117 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 17:13:35,121 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 17:13:35,150 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:35,153 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:13:35,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:35,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:35,157 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 17:13:35,168 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 17:13:35,173 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 17:13:35,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:35,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:13:35,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:35,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:35,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:35,178 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:13:35,178 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:13:35,193 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:35,202 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 17:13:35,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:35,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:35,209 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 17:13:35,219 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 17:13:35,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:35,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:13:35,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:35,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:35,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:35,227 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 17:13:35,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:13:35,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:13:35,242 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:35,249 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 17:13:35,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:35,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:35,251 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 17:13:35,257 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 17:13:35,258 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 17:13:35,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:35,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:13:35,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:35,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:35,266 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:35,267 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:13:35,267 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:13:35,289 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:13:35,292 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:13:35,292 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:13:35,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:35,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:35,297 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 17:13:35,300 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 17:13:35,301 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:13:35,302 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:13:35,302 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:13:35,302 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(ite d1 1 0)_2) = -2*v_rep(ite d1 1 0)_2 + 1 Supporting invariants [] [2023-10-12 17:13:35,309 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 17:13:35,311 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:13:35,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:35,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:13:35,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:35,358 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:13:35,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:35,373 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 17:13:35,402 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 [2023-10-12 17:13:35,404 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 66 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 17:13:35,537 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 66 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 256 states and 816 transitions. Complement of second has 8 states. [2023-10-12 17:13:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-10-12 17:13:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 17:13:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2023-10-12 17:13:35,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:13:35,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:35,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:13:35,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:35,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 2 letters. Loop has 4 letters. [2023-10-12 17:13:35,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:35,555 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 256 states and 816 transitions. [2023-10-12 17:13:35,573 INFO L131 ngComponentsAnalysis]: Automaton has 26 accepting balls. 96 [2023-10-12 17:13:35,581 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 256 states to 189 states and 619 transitions. [2023-10-12 17:13:35,582 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 106 [2023-10-12 17:13:35,583 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 151 [2023-10-12 17:13:35,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 619 transitions. [2023-10-12 17:13:35,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:13:35,584 INFO L219 hiAutomatonCegarLoop]: Abstraction has 189 states and 619 transitions. [2023-10-12 17:13:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states and 619 transitions. [2023-10-12 17:13:35,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 118. [2023-10-12 17:13:35,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 118 states have (on average 3.5254237288135593) internal successors, (416), 117 states have internal predecessors, (416), 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 17:13:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 416 transitions. [2023-10-12 17:13:35,617 INFO L241 hiAutomatonCegarLoop]: Abstraction has 118 states and 416 transitions. [2023-10-12 17:13:35,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:13:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:13:35,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:13:35,620 INFO L87 Difference]: Start difference. First operand 118 states and 416 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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 17:13:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:13:35,649 INFO L93 Difference]: Finished difference Result 98 states and 279 transitions. [2023-10-12 17:13:35,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 279 transitions. [2023-10-12 17:13:35,651 INFO L131 ngComponentsAnalysis]: Automaton has 20 accepting balls. 78 [2023-10-12 17:13:35,653 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 86 states and 255 transitions. [2023-10-12 17:13:35,653 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2023-10-12 17:13:35,653 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 86 [2023-10-12 17:13:35,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 255 transitions. [2023-10-12 17:13:35,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:13:35,655 INFO L219 hiAutomatonCegarLoop]: Abstraction has 86 states and 255 transitions. [2023-10-12 17:13:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 255 transitions. [2023-10-12 17:13:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2023-10-12 17:13:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 3.1285714285714286) internal successors, (219), 69 states have internal predecessors, (219), 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 17:13:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 219 transitions. [2023-10-12 17:13:35,661 INFO L241 hiAutomatonCegarLoop]: Abstraction has 70 states and 219 transitions. [2023-10-12 17:13:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:13:35,663 INFO L430 stractBuchiCegarLoop]: Abstraction has 70 states and 219 transitions. [2023-10-12 17:13:35,663 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:13:35,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 219 transitions. [2023-10-12 17:13:35,664 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 63 [2023-10-12 17:13:35,664 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:35,664 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:35,664 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:13:35,664 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-10-12 17:13:35,665 INFO L748 eck$LassoCheckResult]: Stem: 920#[$Ultimate##0]don't care [64] $Ultimate##0-->L56: Formula: (and (or (and v_d2_5 v_d1_5) (and (not v_d2_5) (not v_d1_5))) v_d1_5 (= v_pos_9 0) v_v_assert_5) InVars {pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} OutVars{pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} AuxVars[] AssignedVars[] 828#[L56]don't care [96] L56-->L17: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0] 830#[L17, L56-1]don't care [104] L17-->L19: Formula: (and v_d1_6 v_v_assert_19) InVars {d1=v_d1_6, v_assert=v_v_assert_19} OutVars{d1=v_d1_6, v_assert=v_v_assert_19} AuxVars[] AssignedVars[] 850#[L19, L56-1]don't care [2023-10-12 17:13:35,665 INFO L750 eck$LassoCheckResult]: Loop: 850#[L19, L56-1]don't care [107] L19-->L17: Formula: (and (or (and v_d1_14 (not v_d1_15)) (and (not v_d1_14) v_d1_15)) (= (+ v_pos_68 1) v_pos_67)) InVars {d1=v_d1_15, pos=v_pos_68} OutVars{d1=v_d1_14, pos=v_pos_67} AuxVars[] AssignedVars[d1, pos] 852#[L17, L56-1]don't care [104] L17-->L19: Formula: (and v_d1_6 v_v_assert_19) InVars {d1=v_d1_6, v_assert=v_v_assert_19} OutVars{d1=v_d1_6, v_assert=v_v_assert_19} AuxVars[] AssignedVars[] 850#[L19, L56-1]don't care [2023-10-12 17:13:35,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:35,666 INFO L85 PathProgramCache]: Analyzing trace with hash 94375, now seen corresponding path program 1 times [2023-10-12 17:13:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:35,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920864898] [2023-10-12 17:13:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:35,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:35,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:35,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:35,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:35,675 INFO L85 PathProgramCache]: Analyzing trace with hash 4382, now seen corresponding path program 1 times [2023-10-12 17:13:35,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:35,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001283842] [2023-10-12 17:13:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:35,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:35,679 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:35,681 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:35,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash 90697796, now seen corresponding path program 1 times [2023-10-12 17:13:35,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:35,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95062706] [2023-10-12 17:13:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:35,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:13:35,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:13:35,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95062706] [2023-10-12 17:13:35,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95062706] provided 0 perfect and 1 imperfect interpolant sequences [2023-10-12 17:13:35,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630868034] [2023-10-12 17:13:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:35,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-10-12 17:13:35,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:35,723 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-10-12 17:13:35,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-10-12 17:13:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:35,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2023-10-12 17:13:35,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:13:35,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-10-12 17:13:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:13:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630868034] provided 0 perfect and 2 imperfect interpolant sequences [2023-10-12 17:13:36,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-10-12 17:13:36,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-10-12 17:13:36,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443447861] [2023-10-12 17:13:36,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-10-12 17:13:36,032 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:36,032 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:36,032 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:36,032 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:36,033 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:13:36,033 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:36,033 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:36,033 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:36,033 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:13:36,033 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:36,033 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:36,034 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 17:13:36,036 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 17:13:36,040 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 17:13:36,061 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:36,061 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:13:36,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:36,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:36,067 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 17:13:36,068 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 17:13:36,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:13:36,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:36,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:13:36,091 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep(ite v_assert 1 0)_3=1} Honda state: {v_rep(ite v_assert 1 0)_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:13:36,097 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 17:13:36,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:36,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:36,099 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 17:13:36,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:13:36,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:36,121 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 17:13:36,139 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 17:13:36,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:36,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:36,141 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:36,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-10-12 17:13:36,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:13:36,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:13:36,169 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:13:36,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:36,176 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:13:36,176 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:13:36,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:13:36,176 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:13:36,176 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:13:36,176 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:36,177 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:13:36,177 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:13:36,177 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:13:36,177 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:13:36,177 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:13:36,178 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 17:13:36,180 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 17:13:36,185 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 17:13:36,216 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:13:36,216 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:13:36,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:36,218 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:13:36,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-10-12 17:13:36,223 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 17:13:36,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:36,233 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:13:36,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:36,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:36,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:36,234 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:13:36,234 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:13:36,235 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:13:36,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:36,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:36,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:36,244 INFO L229 MonitoredProcess]: Starting monitored process 16 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 17:13:36,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-10-12 17:13:36,248 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 17:13:36,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:13:36,254 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:13:36,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:13:36,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:13:36,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:13:36,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:13:36,255 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:13:36,263 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:13:36,265 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:13:36,265 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:13:36,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:13:36,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:13:36,267 INFO L229 MonitoredProcess]: Starting monitored process 17 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 17:13:36,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-10-12 17:13:36,269 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:13:36,269 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:13:36,269 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:13:36,270 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(ite d1 1 0)_4) = -2*v_rep(ite d1 1 0)_4 + 1 Supporting invariants [] [2023-10-12 17:13:36,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:36,281 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:13:36,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:36,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:13:36,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:13:36,309 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:13:36,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:13:36,350 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 17:13:36,351 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 [2023-10-12 17:13:36,351 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 219 transitions. cyclomatic complexity: 164 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 17:13:36,486 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 219 transitions. cyclomatic complexity: 164. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 334 states and 1087 transitions. Complement of second has 8 states. [2023-10-12 17:13:36,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-10-12 17:13:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 17:13:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2023-10-12 17:13:36,489 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 61 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:13:36,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:36,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 61 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:13:36,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:36,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 61 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:13:36,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:13:36,490 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 334 states and 1087 transitions. [2023-10-12 17:13:36,496 INFO L131 ngComponentsAnalysis]: Automaton has 37 accepting balls. 147 [2023-10-12 17:13:36,500 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 334 states to 286 states and 949 transitions. [2023-10-12 17:13:36,500 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 170 [2023-10-12 17:13:36,501 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2023-10-12 17:13:36,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 286 states and 949 transitions. [2023-10-12 17:13:36,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:13:36,502 INFO L219 hiAutomatonCegarLoop]: Abstraction has 286 states and 949 transitions. [2023-10-12 17:13:36,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states and 949 transitions. [2023-10-12 17:13:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 213. [2023-10-12 17:13:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 213 states have (on average 3.563380281690141) internal successors, (759), 212 states have internal predecessors, (759), 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 17:13:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 759 transitions. [2023-10-12 17:13:36,538 INFO L241 hiAutomatonCegarLoop]: Abstraction has 213 states and 759 transitions. [2023-10-12 17:13:36,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:13:36,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:13:36,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:13:36,539 INFO L87 Difference]: Start difference. First operand 213 states and 759 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 17:13:36,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-10-12 17:13:36,546 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 17:13:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:13:36,589 INFO L93 Difference]: Finished difference Result 164 states and 511 transitions. [2023-10-12 17:13:36,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 511 transitions. [2023-10-12 17:13:36,592 INFO L131 ngComponentsAnalysis]: Automaton has 20 accepting balls. 91 [2023-10-12 17:13:36,593 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 112 states and 326 transitions. [2023-10-12 17:13:36,593 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 112 [2023-10-12 17:13:36,593 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 112 [2023-10-12 17:13:36,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 326 transitions. [2023-10-12 17:13:36,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:13:36,595 INFO L219 hiAutomatonCegarLoop]: Abstraction has 112 states and 326 transitions. [2023-10-12 17:13:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states and 326 transitions. [2023-10-12 17:13:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 70. [2023-10-12 17:13:36,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 2.942857142857143) internal successors, (206), 69 states have internal predecessors, (206), 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 17:13:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 206 transitions. [2023-10-12 17:13:36,599 INFO L241 hiAutomatonCegarLoop]: Abstraction has 70 states and 206 transitions. [2023-10-12 17:13:36,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-10-12 17:13:36,600 INFO L430 stractBuchiCegarLoop]: Abstraction has 70 states and 206 transitions. [2023-10-12 17:13:36,600 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:13:36,600 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 206 transitions. [2023-10-12 17:13:36,601 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 67 [2023-10-12 17:13:36,601 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:13:36,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:13:36,601 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:13:36,601 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-10-12 17:13:36,602 INFO L748 eck$LassoCheckResult]: Stem: 2041#[$Ultimate##0]don't care [64] $Ultimate##0-->L56: Formula: (and (or (and v_d2_5 v_d1_5) (and (not v_d2_5) (not v_d1_5))) v_d1_5 (= v_pos_9 0) v_v_assert_5) InVars {pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} OutVars{pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} AuxVars[] AssignedVars[] 1959#[L56]don't care [96] L56-->L17: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0] 1961#[L17, L56-1]don't care [2023-10-12 17:13:36,602 INFO L750 eck$LassoCheckResult]: Loop: 1961#[L17, L56-1]don't care [104] L17-->L19: Formula: (and v_d1_6 v_v_assert_19) InVars {d1=v_d1_6, v_assert=v_v_assert_19} OutVars{d1=v_d1_6, v_assert=v_v_assert_19} AuxVars[] AssignedVars[] 1981#[L19, L56-1]don't care [107] L19-->L17: Formula: (and (or (and v_d1_14 (not v_d1_15)) (and (not v_d1_14) v_d1_15)) (= (+ v_pos_68 1) v_pos_67)) InVars {d1=v_d1_15, pos=v_pos_68} OutVars{d1=v_d1_14, pos=v_pos_67} AuxVars[] AssignedVars[d1, pos] 1983#[L17, L56-1]don't care [105] L17-->L23: Formula: (and (not v_d1_8) v_v_assert_21) InVars {d1=v_d1_8, v_assert=v_v_assert_21} OutVars{d1=v_d1_8, v_assert=v_v_assert_21} AuxVars[] AssignedVars[] 2009#[L23, L56-1]don't care [106] L23-->L17: Formula: (and (= (+ v_pos_47 1) v_pos_48) (or (and (not v_d1_10) v_d1_11) (and (not v_d1_11) v_d1_10))) InVars {d1=v_d1_11, pos=v_pos_48} OutVars{d1=v_d1_10, pos=v_pos_47} AuxVars[] AssignedVars[d1, pos] 1961#[L17, L56-1]don't care [2023-10-12 17:13:36,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash 3041, now seen corresponding path program 2 times [2023-10-12 17:13:36,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:36,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583392823] [2023-10-12 17:13:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:36,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:36,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:36,609 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:36,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash 4127973, now seen corresponding path program 1 times [2023-10-12 17:13:36,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:36,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788235989] [2023-10-12 17:13:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:36,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:36,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:36,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:13:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1483335483, now seen corresponding path program 1 times [2023-10-12 17:13:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:13:36,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090006321] [2023-10-12 17:13:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:13:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:13:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:36,623 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:36,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:13:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:36,701 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:13:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:13:36,721 INFO L201 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:13:36 BoogieIcfgContainer [2023-10-12 17:13:36,721 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:13:36,722 INFO L158 Benchmark]: Toolchain (without parser) took 3106.25ms. Allocated memory was 191.9MB in the beginning and 328.2MB in the end (delta: 136.3MB). Free memory was 147.4MB in the beginning and 281.6MB in the end (delta: -134.3MB). Peak memory consumption was 2.4MB. Max. memory is 8.0GB. [2023-10-12 17:13:36,722 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.28ms. Allocated memory is still 191.9MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:13:36,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.10ms. Allocated memory is still 191.9MB. Free memory was 147.2MB in the beginning and 145.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:13:36,723 INFO L158 Benchmark]: Boogie Preprocessor took 17.98ms. Allocated memory is still 191.9MB. Free memory was 145.8MB in the beginning and 144.6MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:13:36,724 INFO L158 Benchmark]: RCFGBuilder took 188.95ms. Allocated memory is still 191.9MB. Free memory was 144.6MB in the beginning and 135.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:13:36,724 INFO L158 Benchmark]: BuchiAutomizer took 2869.52ms. Allocated memory was 191.9MB in the beginning and 328.2MB in the end (delta: 136.3MB). Free memory was 135.0MB in the beginning and 281.6MB in the end (delta: -146.7MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:13:36,726 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 0.28ms. Allocated memory is still 191.9MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.10ms. Allocated memory is still 191.9MB. Free memory was 147.2MB in the beginning and 145.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.98ms. Allocated memory is still 191.9MB. Free memory was 145.8MB in the beginning and 144.6MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 188.95ms. Allocated memory is still 191.9MB. Free memory was 144.6MB in the beginning and 135.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 2869.52ms. Allocated memory was 191.9MB in the beginning and 328.2MB in the end (delta: 136.3MB). Free memory was 135.0MB in the beginning and 281.6MB in the end (delta: -146.7MB). There was no memory consumed. 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 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * (if d1 then 1 else 0) + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * (if d1 then 1 else 0) + 1 and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 70 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 202 StatesRemovedByMinimization, 4 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, 94 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 253 IncrementalHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 5 mSDtfsCounter, 253 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol133 ite100 ukn100 eq150 hnf100 smp100 dnf100 smp100 tf116 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 39ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L55] 0 assume pos == 0 && (d1 == d2 && d1 == true) && v_assert == true; VAL [d1=true, d2=true, pos=0, v_assert=true] [L56] FORK 0 fork 1 thread1(); VAL [d1=true, d2=true, pos=0, v_assert=true] Loop: [L17] COND TRUE v_assert [L18] COND TRUE d1 [L19] pos := pos + 1; [L26] d1 := !d1; [L17] COND TRUE v_assert [L18] COND FALSE !(d1) [L23] pos := pos - 1; [L26] d1 := !d1; End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L55] 0 assume pos == 0 && (d1 == d2 && d1 == true) && v_assert == true; VAL [d1=true, d2=true, pos=0, v_assert=true] [L56] FORK 0 fork 1 thread1(); VAL [d1=true, d2=true, pos=0, v_assert=true] Loop: [L17] COND TRUE v_assert [L18] COND TRUE d1 [L19] pos := pos + 1; [L26] d1 := !d1; [L17] COND TRUE v_assert [L18] COND FALSE !(d1) [L23] pos := pos - 1; [L26] d1 := !d1; End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 34 PlacesBefore, 26 PlacesAfterwards, 28 TransitionsBefore, 20 TransitionsAfterwards, 264 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 405 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 291, independent: 269, independent conditional: 0, independent unconditional: 269, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 208, independent: 189, independent conditional: 0, independent unconditional: 189, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 208, independent: 177, independent conditional: 0, independent unconditional: 177, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 122, independent: 52, independent conditional: 0, independent unconditional: 52, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 291, independent: 80, independent conditional: 0, independent unconditional: 80, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 208, unknown conditional: 0, unknown unconditional: 208] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be incorrect! [2023-10-12 17:13:36,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-10-12 17:13:36,947 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...