java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/data_structures_set_multi_proc_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:28,394 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:28,396 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:28,414 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:28,415 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:28,416 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:28,418 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:28,420 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:28,423 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:28,424 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:28,425 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:28,426 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:28,427 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:28,428 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:28,429 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:28,430 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:28,431 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:28,433 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:28,435 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:28,437 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:28,439 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:28,440 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:28,443 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:16:28,446 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:16:28,446 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:16:28,448 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:16:28,448 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:16:28,449 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:16:28,450 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:16:28,452 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:16:28,453 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:16:28,454 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:16:28,457 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:16:28,457 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:28,458 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:28,458 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:28,459 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:28,461 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:28,462 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:28,463 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:28,489 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:28,490 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:28,491 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:28,491 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:28,492 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:28,492 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:28,492 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:28,492 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:28,492 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:28,493 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:28,493 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:28,493 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:28,493 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:28,493 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:28,493 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:28,494 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:28,494 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:28,494 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:28,494 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:28,494 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:28,495 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:28,495 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:28,495 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:28,495 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:28,495 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:28,496 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:28,496 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:28,496 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:28,496 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:16:28,532 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:28,547 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:28,552 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:28,553 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:28,554 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:28,554 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/data_structures_set_multi_proc_true-unreach-call_ground.i [2019-05-23 11:16:28,615 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803e09ae3/ee406836e864461cbcd149095057059e/FLAG7cb366f5f [2019-05-23 11:16:29,025 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:29,026 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/data_structures_set_multi_proc_true-unreach-call_ground.i [2019-05-23 11:16:29,034 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803e09ae3/ee406836e864461cbcd149095057059e/FLAG7cb366f5f [2019-05-23 11:16:29,381 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/803e09ae3/ee406836e864461cbcd149095057059e [2019-05-23 11:16:29,392 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:29,393 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:29,394 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:29,394 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:29,398 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:29,399 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,402 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac42f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29, skipping insertion in model container [2019-05-23 11:16:29,403 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,410 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:29,429 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:29,669 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:29,685 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:29,737 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:29,758 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:29,759 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29 WrapperNode [2019-05-23 11:16:29,759 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:29,761 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:29,761 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:29,761 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:29,771 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,783 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,819 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:29,820 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:29,820 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:29,820 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:29,834 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,835 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,838 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,839 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,859 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,959 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,961 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (1/1) ... [2019-05-23 11:16:29,964 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:29,964 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:29,964 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:29,964 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:29,965 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:16:30,019 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:16:30,019 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:30,019 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:30,019 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:30,020 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:30,020 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:30,719 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:30,719 INFO L146 ILogger]: Removed 18 assume(true) statements. [2019-05-23 11:16:30,721 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:30 BoogieIcfgContainer [2019-05-23 11:16:30,722 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:30,722 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:30,723 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:30,728 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:30,729 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:29" (1/3) ... [2019-05-23 11:16:30,730 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fabbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:30, skipping insertion in model container [2019-05-23 11:16:30,730 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:29" (2/3) ... [2019-05-23 11:16:30,730 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fabbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:30, skipping insertion in model container [2019-05-23 11:16:30,731 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:30" (3/3) ... [2019-05-23 11:16:30,733 INFO L146 ILogger]: Analyzing ICFG data_structures_set_multi_proc_true-unreach-call_ground.i [2019-05-23 11:16:30,744 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:30,753 INFO L146 ILogger]: Appying trace abstraction to program that has 2 error locations. [2019-05-23 11:16:30,771 INFO L146 ILogger]: Starting to check reachability of 2 error locations. [2019-05-23 11:16:30,813 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:30,814 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:30,814 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:30,815 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:30,815 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:30,815 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:30,815 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:30,816 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:30,816 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:30,836 INFO L146 ILogger]: Start isEmpty. Operand 103 states. [2019-05-23 11:16:30,843 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 20 [2019-05-23 11:16:30,844 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:30,845 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:30,847 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:30,854 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:30,854 INFO L146 ILogger]: Analyzing trace with hash 677826218, now seen corresponding path program 1 times [2019-05-23 11:16:30,856 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:30,857 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:30,912 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:30,912 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:30,913 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:30,981 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:31,165 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:31,168 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:31,168 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:16:31,171 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:16:31,181 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:16:31,182 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:16:31,184 INFO L146 ILogger]: Start difference. First operand 103 states. Second operand 5 states. [2019-05-23 11:16:31,349 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:31,349 INFO L146 ILogger]: Finished difference Result 231 states and 265 transitions. [2019-05-23 11:16:31,350 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:16:31,351 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 19 [2019-05-23 11:16:31,352 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:31,362 INFO L146 ILogger]: With dead ends: 231 [2019-05-23 11:16:31,362 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:16:31,365 INFO L146 ILogger]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:16:31,385 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:16:31,409 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 105. [2019-05-23 11:16:31,411 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:16:31,413 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2019-05-23 11:16:31,415 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 19 [2019-05-23 11:16:31,416 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:31,416 INFO L146 ILogger]: Abstraction has 105 states and 113 transitions. [2019-05-23 11:16:31,416 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:16:31,416 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 113 transitions. [2019-05-23 11:16:31,418 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:16:31,419 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:31,419 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:31,419 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:31,420 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:31,420 INFO L146 ILogger]: Analyzing trace with hash 1878228291, now seen corresponding path program 1 times [2019-05-23 11:16:31,420 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:31,420 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:31,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:31,422 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:31,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:31,455 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:31,585 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:31,586 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:31,586 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:31,601 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:31,647 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:31,650 INFO L146 ILogger]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:16:31,657 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:31,730 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:31,759 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:31,759 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:16:31,760 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:16:31,760 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:16:31,761 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:31,761 INFO L146 ILogger]: Start difference. First operand 105 states and 113 transitions. Second operand 7 states. [2019-05-23 11:16:32,025 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:32,026 INFO L146 ILogger]: Finished difference Result 242 states and 261 transitions. [2019-05-23 11:16:32,030 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:16:32,031 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 59 [2019-05-23 11:16:32,031 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:32,036 INFO L146 ILogger]: With dead ends: 242 [2019-05-23 11:16:32,036 INFO L146 ILogger]: Without dead ends: 222 [2019-05-23 11:16:32,038 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:32,040 INFO L146 ILogger]: Start minimizeSevpa. Operand 222 states. [2019-05-23 11:16:32,061 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 222 to 148. [2019-05-23 11:16:32,061 INFO L146 ILogger]: Start removeUnreachable. Operand 148 states. [2019-05-23 11:16:32,063 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 148 states to 148 states and 159 transitions. [2019-05-23 11:16:32,063 INFO L146 ILogger]: Start accepts. Automaton has 148 states and 159 transitions. Word has length 59 [2019-05-23 11:16:32,064 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:32,064 INFO L146 ILogger]: Abstraction has 148 states and 159 transitions. [2019-05-23 11:16:32,064 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:16:32,064 INFO L146 ILogger]: Start isEmpty. Operand 148 states and 159 transitions. [2019-05-23 11:16:32,067 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:16:32,068 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:32,068 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:32,069 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:32,069 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:32,069 INFO L146 ILogger]: Analyzing trace with hash -31569984, now seen corresponding path program 1 times [2019-05-23 11:16:32,069 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:32,069 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:32,070 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:32,071 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:32,071 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:32,091 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:32,178 INFO L146 ILogger]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:16:32,179 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:32,179 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:16:32,180 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:16:32,180 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:16:32,180 INFO L146 ILogger]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:16:32,181 INFO L146 ILogger]: Start difference. First operand 148 states and 159 transitions. Second operand 4 states. [2019-05-23 11:16:32,288 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:32,289 INFO L146 ILogger]: Finished difference Result 312 states and 336 transitions. [2019-05-23 11:16:32,291 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:16:32,291 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 79 [2019-05-23 11:16:32,292 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:32,296 INFO L146 ILogger]: With dead ends: 312 [2019-05-23 11:16:32,297 INFO L146 ILogger]: Without dead ends: 220 [2019-05-23 11:16:32,298 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:16:32,298 INFO L146 ILogger]: Start minimizeSevpa. Operand 220 states. [2019-05-23 11:16:32,325 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 220 to 153. [2019-05-23 11:16:32,325 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:16:32,326 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2019-05-23 11:16:32,330 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 79 [2019-05-23 11:16:32,331 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:32,331 INFO L146 ILogger]: Abstraction has 153 states and 164 transitions. [2019-05-23 11:16:32,331 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:16:32,331 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 164 transitions. [2019-05-23 11:16:32,337 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:16:32,341 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:32,341 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:32,342 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:32,342 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:32,343 INFO L146 ILogger]: Analyzing trace with hash 816709390, now seen corresponding path program 1 times [2019-05-23 11:16:32,343 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:32,343 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:32,344 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:32,345 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:32,345 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:32,410 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:32,715 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:32,716 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:32,716 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:32,737 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:32,799 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:32,800 INFO L146 ILogger]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:32,807 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:33,099 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:33,117 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:33,118 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-05-23 11:16:33,118 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:16:33,118 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:16:33,119 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:33,119 INFO L146 ILogger]: Start difference. First operand 153 states and 164 transitions. Second operand 9 states. [2019-05-23 11:16:33,563 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:33,564 INFO L146 ILogger]: Finished difference Result 323 states and 348 transitions. [2019-05-23 11:16:33,564 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:16:33,564 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 82 [2019-05-23 11:16:33,565 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:33,567 INFO L146 ILogger]: With dead ends: 323 [2019-05-23 11:16:33,567 INFO L146 ILogger]: Without dead ends: 303 [2019-05-23 11:16:33,568 INFO L146 ILogger]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:33,568 INFO L146 ILogger]: Start minimizeSevpa. Operand 303 states. [2019-05-23 11:16:33,579 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 303 to 227. [2019-05-23 11:16:33,579 INFO L146 ILogger]: Start removeUnreachable. Operand 227 states. [2019-05-23 11:16:33,580 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 227 states to 227 states and 244 transitions. [2019-05-23 11:16:33,581 INFO L146 ILogger]: Start accepts. Automaton has 227 states and 244 transitions. Word has length 82 [2019-05-23 11:16:33,581 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:33,581 INFO L146 ILogger]: Abstraction has 227 states and 244 transitions. [2019-05-23 11:16:33,581 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:16:33,582 INFO L146 ILogger]: Start isEmpty. Operand 227 states and 244 transitions. [2019-05-23 11:16:33,584 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:16:33,584 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:33,585 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:33,585 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:33,585 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:33,585 INFO L146 ILogger]: Analyzing trace with hash -588338973, now seen corresponding path program 2 times [2019-05-23 11:16:33,586 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:33,586 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:33,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:33,587 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:33,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:33,609 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:33,971 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:33,972 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:33,973 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:33,982 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:34,043 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:34,043 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:34,045 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:16:34,051 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:34,343 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-05-23 11:16:34,361 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:34,361 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2019-05-23 11:16:34,362 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:16:34,362 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:16:34,362 INFO L146 ILogger]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:16:34,363 INFO L146 ILogger]: Start difference. First operand 227 states and 244 transitions. Second operand 17 states. [2019-05-23 11:16:37,057 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:37,057 INFO L146 ILogger]: Finished difference Result 642 states and 686 transitions. [2019-05-23 11:16:37,057 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-05-23 11:16:37,057 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 105 [2019-05-23 11:16:37,058 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:37,061 INFO L146 ILogger]: With dead ends: 642 [2019-05-23 11:16:37,061 INFO L146 ILogger]: Without dead ends: 622 [2019-05-23 11:16:37,066 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1326, Invalid=5316, Unknown=0, NotChecked=0, Total=6642 [2019-05-23 11:16:37,067 INFO L146 ILogger]: Start minimizeSevpa. Operand 622 states. [2019-05-23 11:16:37,096 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 622 to 423. [2019-05-23 11:16:37,096 INFO L146 ILogger]: Start removeUnreachable. Operand 423 states. [2019-05-23 11:16:37,100 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 423 states to 423 states and 453 transitions. [2019-05-23 11:16:37,100 INFO L146 ILogger]: Start accepts. Automaton has 423 states and 453 transitions. Word has length 105 [2019-05-23 11:16:37,100 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:37,100 INFO L146 ILogger]: Abstraction has 423 states and 453 transitions. [2019-05-23 11:16:37,101 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:16:37,101 INFO L146 ILogger]: Start isEmpty. Operand 423 states and 453 transitions. [2019-05-23 11:16:37,106 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 135 [2019-05-23 11:16:37,106 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:37,106 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:37,107 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:37,107 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:37,107 INFO L146 ILogger]: Analyzing trace with hash -83895734, now seen corresponding path program 1 times [2019-05-23 11:16:37,107 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:37,107 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:37,108 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:37,108 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:37,109 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:37,130 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:37,464 INFO L146 ILogger]: Checked inductivity of 127 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:16:37,464 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:37,465 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:37,477 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:37,526 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:37,527 INFO L146 ILogger]: Trace formula consists of 266 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:37,532 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:37,611 INFO L146 ILogger]: Checked inductivity of 127 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:16:37,631 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:37,631 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:16:37,632 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:37,632 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:37,633 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:37,633 INFO L146 ILogger]: Start difference. First operand 423 states and 453 transitions. Second operand 13 states. [2019-05-23 11:16:37,905 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:37,906 INFO L146 ILogger]: Finished difference Result 689 states and 740 transitions. [2019-05-23 11:16:37,907 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:16:37,907 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 134 [2019-05-23 11:16:37,908 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:37,910 INFO L146 ILogger]: With dead ends: 689 [2019-05-23 11:16:37,911 INFO L146 ILogger]: Without dead ends: 665 [2019-05-23 11:16:37,911 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:16:37,912 INFO L146 ILogger]: Start minimizeSevpa. Operand 665 states. [2019-05-23 11:16:37,926 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 665 to 544. [2019-05-23 11:16:37,926 INFO L146 ILogger]: Start removeUnreachable. Operand 544 states. [2019-05-23 11:16:37,928 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 544 states to 544 states and 583 transitions. [2019-05-23 11:16:37,928 INFO L146 ILogger]: Start accepts. Automaton has 544 states and 583 transitions. Word has length 134 [2019-05-23 11:16:37,929 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:37,929 INFO L146 ILogger]: Abstraction has 544 states and 583 transitions. [2019-05-23 11:16:37,929 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:16:37,929 INFO L146 ILogger]: Start isEmpty. Operand 544 states and 583 transitions. [2019-05-23 11:16:37,931 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:16:37,931 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:37,932 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:37,932 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:37,932 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:37,932 INFO L146 ILogger]: Analyzing trace with hash 1212396447, now seen corresponding path program 2 times [2019-05-23 11:16:37,933 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:37,933 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:37,934 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:37,934 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:37,934 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:37,958 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:38,178 INFO L146 ILogger]: Checked inductivity of 214 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:16:38,179 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:38,179 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:38,189 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:38,253 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:38,253 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:38,255 INFO L146 ILogger]: Trace formula consists of 310 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:16:38,261 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:38,407 INFO L146 ILogger]: Checked inductivity of 214 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:16:38,436 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:38,437 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:16:38,437 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:16:38,438 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:16:38,438 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:38,438 INFO L146 ILogger]: Start difference. First operand 544 states and 583 transitions. Second operand 15 states. [2019-05-23 11:16:39,026 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:39,026 INFO L146 ILogger]: Finished difference Result 810 states and 870 transitions. [2019-05-23 11:16:39,027 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:16:39,028 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 157 [2019-05-23 11:16:39,028 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:39,031 INFO L146 ILogger]: With dead ends: 810 [2019-05-23 11:16:39,032 INFO L146 ILogger]: Without dead ends: 786 [2019-05-23 11:16:39,033 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:16:39,034 INFO L146 ILogger]: Start minimizeSevpa. Operand 786 states. [2019-05-23 11:16:39,049 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 786 to 665. [2019-05-23 11:16:39,049 INFO L146 ILogger]: Start removeUnreachable. Operand 665 states. [2019-05-23 11:16:39,053 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 665 states to 665 states and 713 transitions. [2019-05-23 11:16:39,054 INFO L146 ILogger]: Start accepts. Automaton has 665 states and 713 transitions. Word has length 157 [2019-05-23 11:16:39,054 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:39,054 INFO L146 ILogger]: Abstraction has 665 states and 713 transitions. [2019-05-23 11:16:39,054 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:16:39,054 INFO L146 ILogger]: Start isEmpty. Operand 665 states and 713 transitions. [2019-05-23 11:16:39,057 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:16:39,058 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:39,058 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:39,058 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:39,059 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:39,059 INFO L146 ILogger]: Analyzing trace with hash -1103091030, now seen corresponding path program 3 times [2019-05-23 11:16:39,059 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:39,059 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:39,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:39,061 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:39,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:39,098 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:39,335 INFO L146 ILogger]: Checked inductivity of 324 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:16:39,336 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:39,336 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:39,346 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:39,398 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:16:39,398 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:39,399 INFO L146 ILogger]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:39,402 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:39,535 INFO L146 ILogger]: Checked inductivity of 324 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2019-05-23 11:16:39,554 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:39,554 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2019-05-23 11:16:39,555 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:16:39,555 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:16:39,556 INFO L146 ILogger]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:16:39,556 INFO L146 ILogger]: Start difference. First operand 665 states and 713 transitions. Second operand 20 states. [2019-05-23 11:16:40,691 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-05-23 11:16:41,600 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:41,600 INFO L146 ILogger]: Finished difference Result 948 states and 1018 transitions. [2019-05-23 11:16:41,600 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:16:41,601 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 180 [2019-05-23 11:16:41,601 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:41,607 INFO L146 ILogger]: With dead ends: 948 [2019-05-23 11:16:41,607 INFO L146 ILogger]: Without dead ends: 916 [2019-05-23 11:16:41,608 INFO L146 ILogger]: 0 DeclaredPredicates, 235 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=676, Invalid=2186, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:16:41,610 INFO L146 ILogger]: Start minimizeSevpa. Operand 916 states. [2019-05-23 11:16:41,625 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 916 to 730. [2019-05-23 11:16:41,625 INFO L146 ILogger]: Start removeUnreachable. Operand 730 states. [2019-05-23 11:16:41,627 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 730 states to 730 states and 783 transitions. [2019-05-23 11:16:41,628 INFO L146 ILogger]: Start accepts. Automaton has 730 states and 783 transitions. Word has length 180 [2019-05-23 11:16:41,628 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:41,628 INFO L146 ILogger]: Abstraction has 730 states and 783 transitions. [2019-05-23 11:16:41,628 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:16:41,628 INFO L146 ILogger]: Start isEmpty. Operand 730 states and 783 transitions. [2019-05-23 11:16:41,631 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:16:41,631 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:41,632 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:41,632 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:41,632 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:41,632 INFO L146 ILogger]: Analyzing trace with hash 2147433830, now seen corresponding path program 3 times [2019-05-23 11:16:41,635 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:41,635 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:41,636 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,636 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:41,636 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,658 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:42,499 INFO L146 ILogger]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:42,499 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:42,499 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:42,513 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:42,624 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:16:42,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:42,626 INFO L146 ILogger]: Trace formula consists of 416 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:16:42,630 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:42,726 INFO L146 ILogger]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:42,753 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:42,753 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:16:42,754 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:16:42,754 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:16:42,754 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:16:42,755 INFO L146 ILogger]: Start difference. First operand 730 states and 783 transitions. Second operand 19 states. [2019-05-23 11:16:43,298 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:43,299 INFO L146 ILogger]: Finished difference Result 1046 states and 1122 transitions. [2019-05-23 11:16:43,303 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:16:43,303 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 208 [2019-05-23 11:16:43,304 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:43,310 INFO L146 ILogger]: With dead ends: 1046 [2019-05-23 11:16:43,310 INFO L146 ILogger]: Without dead ends: 1025 [2019-05-23 11:16:43,311 INFO L146 ILogger]: 0 DeclaredPredicates, 238 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:16:43,312 INFO L146 ILogger]: Start minimizeSevpa. Operand 1025 states. [2019-05-23 11:16:43,329 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1025 to 851. [2019-05-23 11:16:43,329 INFO L146 ILogger]: Start removeUnreachable. Operand 851 states. [2019-05-23 11:16:43,331 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 851 states to 851 states and 913 transitions. [2019-05-23 11:16:43,332 INFO L146 ILogger]: Start accepts. Automaton has 851 states and 913 transitions. Word has length 208 [2019-05-23 11:16:43,332 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:43,332 INFO L146 ILogger]: Abstraction has 851 states and 913 transitions. [2019-05-23 11:16:43,332 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:16:43,332 INFO L146 ILogger]: Start isEmpty. Operand 851 states and 913 transitions. [2019-05-23 11:16:43,337 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 232 [2019-05-23 11:16:43,337 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:43,337 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:43,338 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:43,338 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:43,338 INFO L146 ILogger]: Analyzing trace with hash -476002421, now seen corresponding path program 4 times [2019-05-23 11:16:43,338 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:43,338 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:43,339 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:43,339 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:43,339 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:43,367 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:43,681 INFO L146 ILogger]: Checked inductivity of 591 backedges. 0 proven. 591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:43,681 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:43,681 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:43,693 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:43,757 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:43,757 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:43,758 INFO L146 ILogger]: Trace formula consists of 415 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:43,761 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:43,933 INFO L146 ILogger]: Checked inductivity of 591 backedges. 196 proven. 8 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2019-05-23 11:16:43,952 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:43,953 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2019-05-23 11:16:43,953 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:16:43,954 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:16:43,954 INFO L146 ILogger]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:16:43,954 INFO L146 ILogger]: Start difference. First operand 851 states and 913 transitions. Second operand 28 states. [2019-05-23 11:16:46,564 WARN L146 ILogger]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:16:47,783 WARN L146 ILogger]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-05-23 11:16:48,454 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:16:53,713 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,713 INFO L146 ILogger]: Finished difference Result 2057 states and 2215 transitions. [2019-05-23 11:16:53,713 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2019-05-23 11:16:53,714 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 231 [2019-05-23 11:16:53,714 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,720 INFO L146 ILogger]: With dead ends: 2057 [2019-05-23 11:16:53,720 INFO L146 ILogger]: Without dead ends: 1730 [2019-05-23 11:16:53,736 INFO L146 ILogger]: 0 DeclaredPredicates, 459 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25645 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=10573, Invalid=45833, Unknown=0, NotChecked=0, Total=56406 [2019-05-23 11:16:53,738 INFO L146 ILogger]: Start minimizeSevpa. Operand 1730 states. [2019-05-23 11:16:53,762 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1730 to 987. [2019-05-23 11:16:53,762 INFO L146 ILogger]: Start removeUnreachable. Operand 987 states. [2019-05-23 11:16:53,764 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1058 transitions. [2019-05-23 11:16:53,764 INFO L146 ILogger]: Start accepts. Automaton has 987 states and 1058 transitions. Word has length 231 [2019-05-23 11:16:53,765 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,765 INFO L146 ILogger]: Abstraction has 987 states and 1058 transitions. [2019-05-23 11:16:53,765 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:16:53,765 INFO L146 ILogger]: Start isEmpty. Operand 987 states and 1058 transitions. [2019-05-23 11:16:53,769 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 258 [2019-05-23 11:16:53,769 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,770 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:53,770 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,770 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,770 INFO L146 ILogger]: Analyzing trace with hash 1912684216, now seen corresponding path program 5 times [2019-05-23 11:16:53,771 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,771 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,771 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,772 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:53,772 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,782 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,887 INFO L146 ILogger]: Checked inductivity of 791 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2019-05-23 11:16:53,888 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:53,888 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:16:53,888 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:16:53,888 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:16:53,889 INFO L146 ILogger]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:16:53,889 INFO L146 ILogger]: Start difference. First operand 987 states and 1058 transitions. Second operand 4 states. [2019-05-23 11:16:53,938 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,938 INFO L146 ILogger]: Finished difference Result 1834 states and 1954 transitions. [2019-05-23 11:16:53,940 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:16:53,940 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 257 [2019-05-23 11:16:53,940 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,944 INFO L146 ILogger]: With dead ends: 1834 [2019-05-23 11:16:53,945 INFO L146 ILogger]: Without dead ends: 1103 [2019-05-23 11:16:53,946 INFO L146 ILogger]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:16:53,947 INFO L146 ILogger]: Start minimizeSevpa. Operand 1103 states. [2019-05-23 11:16:53,969 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1103 to 977. [2019-05-23 11:16:53,969 INFO L146 ILogger]: Start removeUnreachable. Operand 977 states. [2019-05-23 11:16:53,972 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1025 transitions. [2019-05-23 11:16:53,972 INFO L146 ILogger]: Start accepts. Automaton has 977 states and 1025 transitions. Word has length 257 [2019-05-23 11:16:53,972 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,972 INFO L146 ILogger]: Abstraction has 977 states and 1025 transitions. [2019-05-23 11:16:53,972 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:16:53,973 INFO L146 ILogger]: Start isEmpty. Operand 977 states and 1025 transitions. [2019-05-23 11:16:53,975 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 262 [2019-05-23 11:16:53,975 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,975 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:53,976 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,976 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,976 INFO L146 ILogger]: Analyzing trace with hash 864977287, now seen corresponding path program 1 times [2019-05-23 11:16:53,976 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,976 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,977 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:53,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,563 INFO L146 ILogger]: Checked inductivity of 787 backedges. 0 proven. 786 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:16:54,563 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:54,563 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:54,585 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:54,658 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,660 INFO L146 ILogger]: Trace formula consists of 514 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:16:54,664 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:54,818 INFO L146 ILogger]: Checked inductivity of 787 backedges. 0 proven. 786 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:16:54,836 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:54,837 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:16:54,837 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:16:54,837 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:16:54,838 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:16:54,838 INFO L146 ILogger]: Start difference. First operand 977 states and 1025 transitions. Second operand 23 states. [2019-05-23 11:16:55,199 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:55,199 INFO L146 ILogger]: Finished difference Result 1307 states and 1371 transitions. [2019-05-23 11:16:55,202 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:16:55,202 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 261 [2019-05-23 11:16:55,202 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:55,210 INFO L146 ILogger]: With dead ends: 1307 [2019-05-23 11:16:55,210 INFO L146 ILogger]: Without dead ends: 1286 [2019-05-23 11:16:55,211 INFO L146 ILogger]: 0 DeclaredPredicates, 299 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:16:55,213 INFO L146 ILogger]: Start minimizeSevpa. Operand 1286 states. [2019-05-23 11:16:55,237 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1286 to 1100. [2019-05-23 11:16:55,237 INFO L146 ILogger]: Start removeUnreachable. Operand 1100 states. [2019-05-23 11:16:55,239 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1154 transitions. [2019-05-23 11:16:55,240 INFO L146 ILogger]: Start accepts. Automaton has 1100 states and 1154 transitions. Word has length 261 [2019-05-23 11:16:55,240 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:55,241 INFO L146 ILogger]: Abstraction has 1100 states and 1154 transitions. [2019-05-23 11:16:55,241 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:16:55,241 INFO L146 ILogger]: Start isEmpty. Operand 1100 states and 1154 transitions. [2019-05-23 11:16:55,244 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 285 [2019-05-23 11:16:55,244 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:55,244 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:55,245 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:55,245 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:55,245 INFO L146 ILogger]: Analyzing trace with hash 1361312146, now seen corresponding path program 2 times [2019-05-23 11:16:55,245 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:55,245 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:55,246 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,246 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:55,246 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,267 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,878 INFO L146 ILogger]: Checked inductivity of 986 backedges. 0 proven. 985 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:16:55,878 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:55,879 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:55,888 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:55,971 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:55,971 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,973 INFO L146 ILogger]: Trace formula consists of 558 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:16:55,977 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:56,084 INFO L146 ILogger]: Checked inductivity of 986 backedges. 0 proven. 985 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:16:56,103 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:56,103 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:16:56,104 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:16:56,104 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:16:56,104 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:16:56,105 INFO L146 ILogger]: Start difference. First operand 1100 states and 1154 transitions. Second operand 25 states. [2019-05-23 11:16:56,607 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,607 INFO L146 ILogger]: Finished difference Result 1430 states and 1500 transitions. [2019-05-23 11:16:56,608 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:16:56,608 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 284 [2019-05-23 11:16:56,609 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,614 INFO L146 ILogger]: With dead ends: 1430 [2019-05-23 11:16:56,614 INFO L146 ILogger]: Without dead ends: 1409 [2019-05-23 11:16:56,615 INFO L146 ILogger]: 0 DeclaredPredicates, 326 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:16:56,616 INFO L146 ILogger]: Start minimizeSevpa. Operand 1409 states. [2019-05-23 11:16:56,640 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1409 to 1223. [2019-05-23 11:16:56,641 INFO L146 ILogger]: Start removeUnreachable. Operand 1223 states. [2019-05-23 11:16:56,643 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1283 transitions. [2019-05-23 11:16:56,643 INFO L146 ILogger]: Start accepts. Automaton has 1223 states and 1283 transitions. Word has length 284 [2019-05-23 11:16:56,644 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,644 INFO L146 ILogger]: Abstraction has 1223 states and 1283 transitions. [2019-05-23 11:16:56,644 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:16:56,644 INFO L146 ILogger]: Start isEmpty. Operand 1223 states and 1283 transitions. [2019-05-23 11:16:56,647 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 308 [2019-05-23 11:16:56,647 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,647 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:56,648 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,648 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,648 INFO L146 ILogger]: Analyzing trace with hash 1257809191, now seen corresponding path program 3 times [2019-05-23 11:16:56,648 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,649 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:56,649 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,649 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:56,650 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,673 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,272 INFO L146 ILogger]: Checked inductivity of 1208 backedges. 0 proven. 1207 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:16:57,272 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,273 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:57,281 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:57,325 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:16:57,326 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,328 INFO L146 ILogger]: Trace formula consists of 179 conjuncts, 67 conjunts are in the unsatisfiable core [2019-05-23 11:16:57,333 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:59,169 INFO L146 ILogger]: treesize reduction 44, result has 57.3 percent of original size [2019-05-23 11:16:59,170 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 74 [2019-05-23 11:16:59,177 INFO L146 ILogger]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:16:59,311 WARN L146 ILogger]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2019-05-23 11:16:59,311 INFO L146 ILogger]: treesize reduction 36, result has 64.4 percent of original size [2019-05-23 11:16:59,313 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:16:59,313 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:46, output treesize:62 [2019-05-23 11:17:14,674 WARN L146 ILogger]: Spent 14.99 s on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2019-05-23 11:17:15,444 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:17:15,445 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:17:15,446 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:17:15,471 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:15,472 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 53 [2019-05-23 11:17:15,473 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:15,482 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:15,482 INFO L146 ILogger]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:15,483 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 7 variables, input treesize:65, output treesize:4 [2019-05-23 11:17:15,738 INFO L146 ILogger]: Checked inductivity of 1208 backedges. 230 proven. 4 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2019-05-23 11:17:15,757 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:15,757 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 32] total 55 [2019-05-23 11:17:15,758 INFO L146 ILogger]: Interpolant automaton has 55 states [2019-05-23 11:17:15,758 INFO L146 ILogger]: Constructing interpolant automaton starting with 55 interpolants. [2019-05-23 11:17:15,758 INFO L146 ILogger]: CoverageRelationStatistics Valid=261, Invalid=2709, Unknown=0, NotChecked=0, Total=2970 [2019-05-23 11:17:15,759 INFO L146 ILogger]: Start difference. First operand 1223 states and 1283 transitions. Second operand 55 states. [2019-05-23 11:17:16,900 WARN L146 ILogger]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2019-05-23 11:17:17,869 WARN L146 ILogger]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-05-23 11:17:18,047 WARN L146 ILogger]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-05-23 11:17:21,713 WARN L146 ILogger]: Spent 155.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-05-23 11:17:22,086 WARN L146 ILogger]: Spent 180.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-05-23 11:17:22,830 WARN L146 ILogger]: Spent 339.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-05-23 11:17:25,087 WARN L146 ILogger]: Spent 1.21 s on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-05-23 11:17:26,421 WARN L146 ILogger]: Spent 1.16 s on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-05-23 11:17:26,964 WARN L146 ILogger]: Spent 281.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-05-23 11:17:27,452 WARN L146 ILogger]: Spent 175.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-05-23 11:17:35,096 WARN L146 ILogger]: Spent 7.47 s on a formula simplification. DAG size of input: 62 DAG size of output: 58