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-crafted/zero_sum3_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:26,346 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:26,348 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:26,365 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:26,366 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:26,367 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:26,369 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:26,380 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:26,383 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:26,384 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:26,386 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:26,387 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:26,387 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:26,396 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:26,397 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:26,400 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:26,401 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:26,404 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:26,408 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:26,411 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:26,412 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:26,415 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:26,418 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:26,418 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:26,419 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:26,420 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:26,421 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:26,423 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:26,423 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:26,425 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:26,425 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:26,428 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:26,430 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:26,430 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:26,431 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:26,431 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:26,431 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:26,432 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:26,433 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:26,433 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:26,459 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:26,459 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:26,461 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:26,462 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:26,462 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:26,462 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:26,462 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:26,462 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:26,463 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:26,463 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:26,463 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:26,464 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:26,464 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:26,464 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:26,464 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:26,464 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:26,465 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:26,465 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:26,465 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:26,465 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:26,465 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:26,466 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:26,467 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:26,467 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:26,467 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:26,467 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:26,468 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:26,468 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:26,468 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 11:29:26,527 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:26,542 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:26,549 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:26,551 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:26,551 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:26,552 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum3_true-unreach-call.c [2019-05-23 11:29:26,622 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687f56664/5bc736eae81e44a6b8a28b5fe70f2341/FLAG29ce6baae [2019-05-23 11:29:27,031 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:27,032 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum3_true-unreach-call.c [2019-05-23 11:29:27,038 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687f56664/5bc736eae81e44a6b8a28b5fe70f2341/FLAG29ce6baae [2019-05-23 11:29:27,409 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687f56664/5bc736eae81e44a6b8a28b5fe70f2341 [2019-05-23 11:29:27,419 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:27,421 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:27,421 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:27,422 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:27,425 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:27,426 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,429 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690eaa25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27, skipping insertion in model container [2019-05-23 11:29:27,429 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,436 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:27,457 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:27,680 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:27,686 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:27,712 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:27,732 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:27,733 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27 WrapperNode [2019-05-23 11:29:27,733 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:27,734 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:27,734 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:27,734 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:27,743 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,753 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,782 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:27,782 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:27,783 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:27,783 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:27,867 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,868 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,870 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,870 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,885 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,894 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,895 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,897 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:27,898 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:27,898 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:27,898 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:27,899 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (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 11:29:27,957 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:27,957 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:27,958 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:27,958 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:27,958 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:28,474 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:28,474 INFO L146 ILogger]: Removed 12 assume(true) statements. [2019-05-23 11:29:28,476 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:28 BoogieIcfgContainer [2019-05-23 11:29:28,476 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:28,477 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:28,478 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:28,481 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:28,481 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:27" (1/3) ... [2019-05-23 11:29:28,482 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7739dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:28, skipping insertion in model container [2019-05-23 11:29:28,482 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27" (2/3) ... [2019-05-23 11:29:28,483 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7739dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:28, skipping insertion in model container [2019-05-23 11:29:28,483 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:28" (3/3) ... [2019-05-23 11:29:28,487 INFO L146 ILogger]: Analyzing ICFG zero_sum3_true-unreach-call.c [2019-05-23 11:29:28,498 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:28,505 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:28,519 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:28,546 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:28,547 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:28,547 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:28,547 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:28,547 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:28,547 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:28,547 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:28,548 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:28,548 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:28,565 INFO L146 ILogger]: Start isEmpty. Operand 72 states. [2019-05-23 11:29:28,572 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:29:28,573 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:28,573 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] [2019-05-23 11:29:28,575 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:28,580 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:28,581 INFO L146 ILogger]: Analyzing trace with hash 2025856780, now seen corresponding path program 1 times [2019-05-23 11:29:28,582 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:28,582 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:28,629 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:28,629 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:28,629 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:28,664 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:28,700 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 11:29:28,702 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:28,703 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:28,706 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:28,720 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:28,721 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:28,723 INFO L146 ILogger]: Start difference. First operand 72 states. Second operand 2 states. [2019-05-23 11:29:28,744 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:28,744 INFO L146 ILogger]: Finished difference Result 124 states and 147 transitions. [2019-05-23 11:29:28,744 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:28,746 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 29 [2019-05-23 11:29:28,746 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:28,755 INFO L146 ILogger]: With dead ends: 124 [2019-05-23 11:29:28,755 INFO L146 ILogger]: Without dead ends: 66 [2019-05-23 11:29:28,758 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:28,774 INFO L146 ILogger]: Start minimizeSevpa. Operand 66 states. [2019-05-23 11:29:28,790 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-05-23 11:29:28,791 INFO L146 ILogger]: Start removeUnreachable. Operand 66 states. [2019-05-23 11:29:28,793 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2019-05-23 11:29:28,795 INFO L146 ILogger]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 29 [2019-05-23 11:29:28,795 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:28,795 INFO L146 ILogger]: Abstraction has 66 states and 71 transitions. [2019-05-23 11:29:28,795 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:28,796 INFO L146 ILogger]: Start isEmpty. Operand 66 states and 71 transitions. [2019-05-23 11:29:28,797 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:29:28,797 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:28,797 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] [2019-05-23 11:29:28,797 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:28,798 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:28,798 INFO L146 ILogger]: Analyzing trace with hash 1059714360, now seen corresponding path program 1 times [2019-05-23 11:29:28,798 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:28,798 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:28,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:28,799 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:28,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:28,821 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:28,941 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 11:29:28,942 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:28,942 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:28,944 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:28,944 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:28,945 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:28,945 INFO L146 ILogger]: Start difference. First operand 66 states and 71 transitions. Second operand 5 states. [2019-05-23 11:29:29,325 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:29,326 INFO L146 ILogger]: Finished difference Result 95 states and 105 transitions. [2019-05-23 11:29:29,326 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:29,327 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 29 [2019-05-23 11:29:29,327 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:29,329 INFO L146 ILogger]: With dead ends: 95 [2019-05-23 11:29:29,329 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:29:29,331 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:29,331 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:29:29,339 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 77. [2019-05-23 11:29:29,340 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:29:29,341 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2019-05-23 11:29:29,341 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 29 [2019-05-23 11:29:29,342 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:29,342 INFO L146 ILogger]: Abstraction has 77 states and 87 transitions. [2019-05-23 11:29:29,342 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:29,342 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 87 transitions. [2019-05-23 11:29:29,344 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:29:29,344 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:29,344 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] [2019-05-23 11:29:29,345 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:29,345 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:29,345 INFO L146 ILogger]: Analyzing trace with hash 274914480, now seen corresponding path program 1 times [2019-05-23 11:29:29,345 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:29,346 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:29,347 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:29,347 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:29,347 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:29,364 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:29,470 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 11:29:29,470 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:29,470 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 11:29:29,486 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:29,515 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:29,516 INFO L146 ILogger]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:29,523 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:29,604 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:29:29,633 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:29,634 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:29,634 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:29,635 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:29,635 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:29,635 INFO L146 ILogger]: Start difference. First operand 77 states and 87 transitions. Second operand 7 states. [2019-05-23 11:29:30,127 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:30,128 INFO L146 ILogger]: Finished difference Result 159 states and 179 transitions. [2019-05-23 11:29:30,129 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:30,129 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 36 [2019-05-23 11:29:30,129 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:30,132 INFO L146 ILogger]: With dead ends: 159 [2019-05-23 11:29:30,132 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:29:30,136 INFO L146 ILogger]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:30,137 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:29:30,153 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 79. [2019-05-23 11:29:30,154 INFO L146 ILogger]: Start removeUnreachable. Operand 79 states. [2019-05-23 11:29:30,157 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2019-05-23 11:29:30,157 INFO L146 ILogger]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 36 [2019-05-23 11:29:30,158 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:30,158 INFO L146 ILogger]: Abstraction has 79 states and 84 transitions. [2019-05-23 11:29:30,158 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:30,158 INFO L146 ILogger]: Start isEmpty. Operand 79 states and 84 transitions. [2019-05-23 11:29:30,162 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:29:30,162 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:30,166 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:30,167 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:30,167 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:30,167 INFO L146 ILogger]: Analyzing trace with hash 1321937047, now seen corresponding path program 1 times [2019-05-23 11:29:30,167 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:30,168 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:30,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:30,169 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:30,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:30,222 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:30,495 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:29:30,496 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:30,496 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 11:29:30,516 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:30,573 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:30,574 INFO L146 ILogger]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:30,576 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:30,717 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:29:30,736 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:30,736 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:30,737 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:30,737 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:30,738 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:30,738 INFO L146 ILogger]: Start difference. First operand 79 states and 84 transitions. Second operand 9 states. [2019-05-23 11:29:31,390 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:31,390 INFO L146 ILogger]: Finished difference Result 169 states and 179 transitions. [2019-05-23 11:29:31,391 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:31,391 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 78 [2019-05-23 11:29:31,391 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:31,392 INFO L146 ILogger]: With dead ends: 169 [2019-05-23 11:29:31,393 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:29:31,396 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:31,397 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:29:31,409 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 86. [2019-05-23 11:29:31,410 INFO L146 ILogger]: Start removeUnreachable. Operand 86 states. [2019-05-23 11:29:31,410 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2019-05-23 11:29:31,411 INFO L146 ILogger]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 78 [2019-05-23 11:29:31,411 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:31,411 INFO L146 ILogger]: Abstraction has 86 states and 91 transitions. [2019-05-23 11:29:31,411 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:31,411 INFO L146 ILogger]: Start isEmpty. Operand 86 states and 91 transitions. [2019-05-23 11:29:31,413 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:29:31,413 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:31,413 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1] [2019-05-23 11:29:31,413 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:31,414 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:31,414 INFO L146 ILogger]: Analyzing trace with hash -1268067990, now seen corresponding path program 2 times [2019-05-23 11:29:31,414 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:31,414 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:31,415 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:31,415 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:31,415 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:31,434 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:31,540 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:29:31,540 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:31,540 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 11:29:31,549 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:31,588 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:31,589 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:31,590 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:31,593 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:31,721 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:29:31,741 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:31,741 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:31,742 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:31,743 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:31,743 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:31,743 INFO L146 ILogger]: Start difference. First operand 86 states and 91 transitions. Second operand 9 states. [2019-05-23 11:29:32,040 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:32,041 INFO L146 ILogger]: Finished difference Result 162 states and 171 transitions. [2019-05-23 11:29:32,041 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:32,041 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 85 [2019-05-23 11:29:32,042 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:32,043 INFO L146 ILogger]: With dead ends: 162 [2019-05-23 11:29:32,044 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:29:32,045 INFO L146 ILogger]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:32,046 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:29:32,057 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 93. [2019-05-23 11:29:32,057 INFO L146 ILogger]: Start removeUnreachable. Operand 93 states. [2019-05-23 11:29:32,058 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2019-05-23 11:29:32,058 INFO L146 ILogger]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 85 [2019-05-23 11:29:32,059 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:32,059 INFO L146 ILogger]: Abstraction has 93 states and 98 transitions. [2019-05-23 11:29:32,059 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:32,059 INFO L146 ILogger]: Start isEmpty. Operand 93 states and 98 transitions. [2019-05-23 11:29:32,060 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:29:32,060 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:32,061 INFO L146 ILogger]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:32,061 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:32,061 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:32,061 INFO L146 ILogger]: Analyzing trace with hash 2135284720, now seen corresponding path program 3 times [2019-05-23 11:29:32,061 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:32,062 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:32,062 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:32,063 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:32,063 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:32,079 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:32,188 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-05-23 11:29:32,189 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:32,189 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 11:29:32,197 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:32,226 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:29:32,226 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:32,229 INFO L146 ILogger]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:32,232 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:32,308 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-05-23 11:29:32,339 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:32,339 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:32,340 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:32,340 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:32,340 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:32,340 INFO L146 ILogger]: Start difference. First operand 93 states and 98 transitions. Second operand 9 states. [2019-05-23 11:29:32,611 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:32,611 INFO L146 ILogger]: Finished difference Result 162 states and 171 transitions. [2019-05-23 11:29:32,612 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:29:32,612 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 92 [2019-05-23 11:29:32,612 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:32,614 INFO L146 ILogger]: With dead ends: 162 [2019-05-23 11:29:32,614 INFO L146 ILogger]: Without dead ends: 122 [2019-05-23 11:29:32,615 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:29:32,616 INFO L146 ILogger]: Start minimizeSevpa. Operand 122 states. [2019-05-23 11:29:32,622 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 122 to 107. [2019-05-23 11:29:32,622 INFO L146 ILogger]: Start removeUnreachable. Operand 107 states. [2019-05-23 11:29:32,623 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2019-05-23 11:29:32,623 INFO L146 ILogger]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 92 [2019-05-23 11:29:32,624 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:32,624 INFO L146 ILogger]: Abstraction has 107 states and 112 transitions. [2019-05-23 11:29:32,624 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:32,624 INFO L146 ILogger]: Start isEmpty. Operand 107 states and 112 transitions. [2019-05-23 11:29:32,626 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:29:32,626 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:32,626 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:32,626 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:32,627 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:32,627 INFO L146 ILogger]: Analyzing trace with hash 842253506, now seen corresponding path program 4 times [2019-05-23 11:29:32,627 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:32,627 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:32,628 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:32,628 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:32,628 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:32,645 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:32,905 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:29:32,906 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:32,906 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 11:29:32,920 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:32,950 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:32,950 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:32,951 INFO L146 ILogger]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:32,955 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:33,050 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:29:33,069 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:33,069 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:33,069 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:33,069 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:33,070 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:33,070 INFO L146 ILogger]: Start difference. First operand 107 states and 112 transitions. Second operand 9 states. [2019-05-23 11:29:33,357 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:33,357 INFO L146 ILogger]: Finished difference Result 125 states and 130 transitions. [2019-05-23 11:29:33,357 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:33,357 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 106 [2019-05-23 11:29:33,358 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:33,359 INFO L146 ILogger]: With dead ends: 125 [2019-05-23 11:29:33,359 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:29:33,360 INFO L146 ILogger]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:33,360 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:29:33,366 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 114. [2019-05-23 11:29:33,367 INFO L146 ILogger]: Start removeUnreachable. Operand 114 states. [2019-05-23 11:29:33,367 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2019-05-23 11:29:33,367 INFO L146 ILogger]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 106 [2019-05-23 11:29:33,368 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:33,368 INFO L146 ILogger]: Abstraction has 114 states and 119 transitions. [2019-05-23 11:29:33,368 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:33,368 INFO L146 ILogger]: Start isEmpty. Operand 114 states and 119 transitions. [2019-05-23 11:29:33,371 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:29:33,371 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:33,371 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:29:33,371 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:33,372 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:33,372 INFO L146 ILogger]: Analyzing trace with hash 904466840, now seen corresponding path program 5 times [2019-05-23 11:29:33,372 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:33,372 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:33,373 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:33,373 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:33,373 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:33,440 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:34,535 WARN L146 ILogger]: Spent 264.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2019-05-23 11:29:39,476 INFO L146 ILogger]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:39,476 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:39,476 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 11:29:39,486 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:39,518 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:29:39,518 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,520 WARN L146 ILogger]: Trace formula consists of 186 conjuncts, 94 conjunts are in the unsatisfiable core [2019-05-23 11:29:39,525 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:41,405 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:41,406 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:41,414 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:41,414 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:41,414 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:41,544 INFO L146 ILogger]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:41,563 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:41,563 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 32] total 72 [2019-05-23 11:29:41,564 INFO L146 ILogger]: Interpolant automaton has 72 states [2019-05-23 11:29:41,564 INFO L146 ILogger]: Constructing interpolant automaton starting with 72 interpolants. [2019-05-23 11:29:41,568 INFO L146 ILogger]: CoverageRelationStatistics Valid=304, Invalid=4808, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:29:41,568 INFO L146 ILogger]: Start difference. First operand 114 states and 119 transitions. Second operand 72 states. [2019-05-23 11:29:49,709 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:49,709 INFO L146 ILogger]: Finished difference Result 219 states and 229 transitions. [2019-05-23 11:29:49,710 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:29:49,710 INFO L146 ILogger]: Start accepts. Automaton has 72 states. Word has length 113 [2019-05-23 11:29:49,711 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:49,712 INFO L146 ILogger]: With dead ends: 219 [2019-05-23 11:29:49,712 INFO L146 ILogger]: Without dead ends: 213 [2019-05-23 11:29:49,719 INFO L146 ILogger]: 0 DeclaredPredicates, 216 GetRequests, 82 SyntacticMatches, 19 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4054 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=797, Invalid=12775, Unknown=0, NotChecked=0, Total=13572 [2019-05-23 11:29:49,719 INFO L146 ILogger]: Start minimizeSevpa. Operand 213 states. [2019-05-23 11:29:49,729 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 213 to 193. [2019-05-23 11:29:49,730 INFO L146 ILogger]: Start removeUnreachable. Operand 193 states. [2019-05-23 11:29:49,730 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 193 states to 193 states and 203 transitions. [2019-05-23 11:29:49,731 INFO L146 ILogger]: Start accepts. Automaton has 193 states and 203 transitions. Word has length 113 [2019-05-23 11:29:49,731 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:49,731 INFO L146 ILogger]: Abstraction has 193 states and 203 transitions. [2019-05-23 11:29:49,731 INFO L146 ILogger]: Interpolant automaton has 72 states. [2019-05-23 11:29:49,731 INFO L146 ILogger]: Start isEmpty. Operand 193 states and 203 transitions. [2019-05-23 11:29:49,733 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:29:49,733 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:49,734 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:29:49,734 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:49,734 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:49,735 INFO L146 ILogger]: Analyzing trace with hash 1019419536, now seen corresponding path program 6 times [2019-05-23 11:29:49,735 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:49,735 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:49,739 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,739 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:49,739 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,753 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,890 INFO L146 ILogger]: Checked inductivity of 69 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:49,891 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:49,891 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 11:29:49,899 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:49,929 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:29:49,929 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,930 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:49,935 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:50,059 INFO L146 ILogger]: Checked inductivity of 69 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:50,077 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:50,077 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:50,078 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:50,079 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:50,079 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:50,080 INFO L146 ILogger]: Start difference. First operand 193 states and 203 transitions. Second operand 20 states. [2019-05-23 11:29:51,049 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:51,049 INFO L146 ILogger]: Finished difference Result 326 states and 342 transitions. [2019-05-23 11:29:51,050 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:29:51,050 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 120 [2019-05-23 11:29:51,051 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:51,052 INFO L146 ILogger]: With dead ends: 326 [2019-05-23 11:29:51,053 INFO L146 ILogger]: Without dead ends: 281 [2019-05-23 11:29:51,054 INFO L146 ILogger]: 0 DeclaredPredicates, 144 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:29:51,054 INFO L146 ILogger]: Start minimizeSevpa. Operand 281 states. [2019-05-23 11:29:51,069 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 281 to 232. [2019-05-23 11:29:51,070 INFO L146 ILogger]: Start removeUnreachable. Operand 232 states. [2019-05-23 11:29:51,071 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 232 states to 232 states and 243 transitions. [2019-05-23 11:29:51,071 INFO L146 ILogger]: Start accepts. Automaton has 232 states and 243 transitions. Word has length 120 [2019-05-23 11:29:51,071 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:51,071 INFO L146 ILogger]: Abstraction has 232 states and 243 transitions. [2019-05-23 11:29:51,071 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:51,072 INFO L146 ILogger]: Start isEmpty. Operand 232 states and 243 transitions. [2019-05-23 11:29:51,073 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:29:51,073 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:51,074 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:29:51,078 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:51,078 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:51,078 INFO L146 ILogger]: Analyzing trace with hash 1008846850, now seen corresponding path program 7 times [2019-05-23 11:29:51,079 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:51,079 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:51,079 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,080 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:51,081 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,095 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,280 INFO L146 ILogger]: Checked inductivity of 69 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:51,280 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:51,280 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 11:29:51,291 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:51,330 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,331 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:51,334 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:51,563 INFO L146 ILogger]: Checked inductivity of 69 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:51,584 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:51,584 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:29:51,584 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:29:51,585 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:29:51,585 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:29:51,585 INFO L146 ILogger]: Start difference. First operand 232 states and 243 transitions. Second operand 21 states. [2019-05-23 11:29:52,468 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:52,469 INFO L146 ILogger]: Finished difference Result 313 states and 326 transitions. [2019-05-23 11:29:52,469 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:29:52,469 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 120 [2019-05-23 11:29:52,470 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:52,472 INFO L146 ILogger]: With dead ends: 313 [2019-05-23 11:29:52,472 INFO L146 ILogger]: Without dead ends: 284 [2019-05-23 11:29:52,473 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:29:52,474 INFO L146 ILogger]: Start minimizeSevpa. Operand 284 states. [2019-05-23 11:29:52,481 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 284 to 255. [2019-05-23 11:29:52,481 INFO L146 ILogger]: Start removeUnreachable. Operand 255 states. [2019-05-23 11:29:52,482 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 255 states to 255 states and 267 transitions. [2019-05-23 11:29:52,482 INFO L146 ILogger]: Start accepts. Automaton has 255 states and 267 transitions. Word has length 120 [2019-05-23 11:29:52,483 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:52,483 INFO L146 ILogger]: Abstraction has 255 states and 267 transitions. [2019-05-23 11:29:52,483 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:29:52,483 INFO L146 ILogger]: Start isEmpty. Operand 255 states and 267 transitions. [2019-05-23 11:29:52,484 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:29:52,484 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:52,485 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:29:52,485 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:52,485 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:52,485 INFO L146 ILogger]: Analyzing trace with hash 1531750601, now seen corresponding path program 8 times [2019-05-23 11:29:52,486 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:52,486 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:52,486 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,487 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:52,487 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,496 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,660 INFO L146 ILogger]: Checked inductivity of 69 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:52,660 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:52,660 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 11:29:52,669 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:52,700 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:52,700 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,701 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:52,702 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:52,816 INFO L146 ILogger]: Checked inductivity of 69 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:52,835 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:52,835 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:52,836 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:52,836 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:52,836 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:52,836 INFO L146 ILogger]: Start difference. First operand 255 states and 267 transitions. Second operand 20 states. [2019-05-23 11:29:53,284 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:53,284 INFO L146 ILogger]: Finished difference Result 319 states and 330 transitions. [2019-05-23 11:29:53,285 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:29:53,285 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 120 [2019-05-23 11:29:53,285 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:53,287 INFO L146 ILogger]: With dead ends: 319 [2019-05-23 11:29:53,287 INFO L146 ILogger]: Without dead ends: 258 [2019-05-23 11:29:53,288 INFO L146 ILogger]: 0 DeclaredPredicates, 144 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:29:53,289 INFO L146 ILogger]: Start minimizeSevpa. Operand 258 states. [2019-05-23 11:29:53,295 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 258 to 223. [2019-05-23 11:29:53,296 INFO L146 ILogger]: Start removeUnreachable. Operand 223 states. [2019-05-23 11:29:53,297 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 223 states to 223 states and 233 transitions. [2019-05-23 11:29:53,297 INFO L146 ILogger]: Start accepts. Automaton has 223 states and 233 transitions. Word has length 120 [2019-05-23 11:29:53,297 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:53,297 INFO L146 ILogger]: Abstraction has 223 states and 233 transitions. [2019-05-23 11:29:53,297 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:53,297 INFO L146 ILogger]: Start isEmpty. Operand 223 states and 233 transitions. [2019-05-23 11:29:53,299 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:29:53,299 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:53,299 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:29:53,299 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:53,299 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:53,300 INFO L146 ILogger]: Analyzing trace with hash -887021481, now seen corresponding path program 9 times [2019-05-23 11:29:53,300 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:53,300 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:53,301 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:53,301 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:53,301 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:53,311 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,460 INFO L146 ILogger]: Checked inductivity of 69 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:53,460 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:53,460 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 11:29:53,470 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:53,502 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:29:53,502 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,503 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:53,506 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:53,991 INFO L146 ILogger]: Checked inductivity of 69 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:54,009 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:54,010 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:29:54,010 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:29:54,011 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:29:54,011 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:29:54,011 INFO L146 ILogger]: Start difference. First operand 223 states and 233 transitions. Second operand 24 states. [2019-05-23 11:29:55,054 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:55,054 INFO L146 ILogger]: Finished difference Result 454 states and 471 transitions. [2019-05-23 11:29:55,054 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:29:55,054 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 120 [2019-05-23 11:29:55,055 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:55,056 INFO L146 ILogger]: With dead ends: 454 [2019-05-23 11:29:55,056 INFO L146 ILogger]: Without dead ends: 338 [2019-05-23 11:29:55,057 INFO L146 ILogger]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:29:55,058 INFO L146 ILogger]: Start minimizeSevpa. Operand 338 states. [2019-05-23 11:29:55,065 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 338 to 230. [2019-05-23 11:29:55,065 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:29:55,066 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 239 transitions. [2019-05-23 11:29:55,066 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 239 transitions. Word has length 120 [2019-05-23 11:29:55,066 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:55,066 INFO L146 ILogger]: Abstraction has 230 states and 239 transitions. [2019-05-23 11:29:55,066 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:29:55,067 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 239 transitions. [2019-05-23 11:29:55,068 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:29:55,068 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:55,068 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:29:55,068 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:55,068 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:55,069 INFO L146 ILogger]: Analyzing trace with hash 956479262, now seen corresponding path program 10 times [2019-05-23 11:29:55,069 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:55,069 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:55,070 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,070 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:55,070 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,079 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,871 INFO L146 ILogger]: Checked inductivity of 69 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:55,871 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:55,871 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 11:29:55,880 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:55,907 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:55,907 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,908 INFO L146 ILogger]: Trace formula consists of 195 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:55,909 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:55,994 INFO L146 ILogger]: Checked inductivity of 69 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:56,012 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:56,012 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:56,012 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:56,012 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:56,014 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:56,014 INFO L146 ILogger]: Start difference. First operand 230 states and 239 transitions. Second operand 20 states. [2019-05-23 11:29:56,409 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:56,409 INFO L146 ILogger]: Finished difference Result 263 states and 271 transitions. [2019-05-23 11:29:56,409 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:29:56,409 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 120 [2019-05-23 11:29:56,410 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:56,411 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:29:56,411 INFO L146 ILogger]: Without dead ends: 170 [2019-05-23 11:29:56,412 INFO L146 ILogger]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:29:56,412 INFO L146 ILogger]: Start minimizeSevpa. Operand 170 states. [2019-05-23 11:29:56,417 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 170 to 159. [2019-05-23 11:29:56,417 INFO L146 ILogger]: Start removeUnreachable. Operand 159 states. [2019-05-23 11:29:56,418 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2019-05-23 11:29:56,418 INFO L146 ILogger]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 120 [2019-05-23 11:29:56,418 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:56,419 INFO L146 ILogger]: Abstraction has 159 states and 166 transitions. [2019-05-23 11:29:56,419 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:56,419 INFO L146 ILogger]: Start isEmpty. Operand 159 states and 166 transitions. [2019-05-23 11:29:56,420 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:29:56,420 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:56,420 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:29:56,420 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:56,420 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:56,421 INFO L146 ILogger]: Analyzing trace with hash 17031141, now seen corresponding path program 11 times [2019-05-23 11:29:56,421 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:56,421 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:56,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:56,422 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:56,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:56,431 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,577 INFO L146 ILogger]: Checked inductivity of 69 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:56,577 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:56,577 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:56,585 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:56,617 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:29:56,618 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,619 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:56,621 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:56,756 INFO L146 ILogger]: Checked inductivity of 69 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:29:56,774 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:56,774 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:56,775 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:56,775 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:56,775 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:56,776 INFO L146 ILogger]: Start difference. First operand 159 states and 166 transitions. Second operand 20 states. [2019-05-23 11:29:57,539 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:57,539 INFO L146 ILogger]: Finished difference Result 278 states and 291 transitions. [2019-05-23 11:29:57,540 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:29:57,540 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 120 [2019-05-23 11:29:57,540 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:57,541 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:29:57,541 INFO L146 ILogger]: Without dead ends: 170 [2019-05-23 11:29:57,542 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:29:57,542 INFO L146 ILogger]: Start minimizeSevpa. Operand 170 states. [2019-05-23 11:29:57,547 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 170 to 165. [2019-05-23 11:29:57,547 INFO L146 ILogger]: Start removeUnreachable. Operand 165 states. [2019-05-23 11:29:57,548 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 165 states to 165 states and 171 transitions. [2019-05-23 11:29:57,548 INFO L146 ILogger]: Start accepts. Automaton has 165 states and 171 transitions. Word has length 120 [2019-05-23 11:29:57,548 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:57,548 INFO L146 ILogger]: Abstraction has 165 states and 171 transitions. [2019-05-23 11:29:57,548 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:57,549 INFO L146 ILogger]: Start isEmpty. Operand 165 states and 171 transitions. [2019-05-23 11:29:57,549 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 142 [2019-05-23 11:29:57,549 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:57,550 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:29:57,550 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:57,550 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:57,550 INFO L146 ILogger]: Analyzing trace with hash 1564040906, now seen corresponding path program 12 times [2019-05-23 11:29:57,550 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:57,551 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:57,551 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:57,551 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:57,552 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:57,563 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:57,842 INFO L146 ILogger]: Checked inductivity of 114 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:29:57,842 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:57,842 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:57,851 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:57,888 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:29:57,888 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:57,889 INFO L146 ILogger]: Trace formula consists of 230 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:57,891 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:58,044 INFO L146 ILogger]: Checked inductivity of 114 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:29:58,063 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:58,063 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:29:58,064 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:29:58,064 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:29:58,064 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:29:58,064 INFO L146 ILogger]: Start difference. First operand 165 states and 171 transitions. Second operand 21 states. [2019-05-23 11:29:58,796 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:58,796 INFO L146 ILogger]: Finished difference Result 176 states and 181 transitions. [2019-05-23 11:29:58,797 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:29:58,797 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 141 [2019-05-23 11:29:58,798 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:58,799 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:29:58,799 INFO L146 ILogger]: Without dead ends: 154 [2019-05-23 11:29:58,800 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=316, Invalid=1576, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:29:58,801 INFO L146 ILogger]: Start minimizeSevpa. Operand 154 states. [2019-05-23 11:29:58,804 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 154 to 149. [2019-05-23 11:29:58,804 INFO L146 ILogger]: Start removeUnreachable. Operand 149 states. [2019-05-23 11:29:58,804 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 149 states to 149 states and 154 transitions. [2019-05-23 11:29:58,805 INFO L146 ILogger]: Start accepts. Automaton has 149 states and 154 transitions. Word has length 141 [2019-05-23 11:29:58,805 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:58,805 INFO L146 ILogger]: Abstraction has 149 states and 154 transitions. [2019-05-23 11:29:58,805 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:29:58,805 INFO L146 ILogger]: Start isEmpty. Operand 149 states and 154 transitions. [2019-05-23 11:29:58,806 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 149 [2019-05-23 11:29:58,806 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:58,806 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:29:58,807 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:58,807 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:58,807 INFO L146 ILogger]: Analyzing trace with hash 1584824151, now seen corresponding path program 13 times [2019-05-23 11:29:58,807 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:58,807 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:58,808 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:58,808 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:58,808 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:58,821 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:59,096 INFO L146 ILogger]: Checked inductivity of 129 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:29:59,096 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:59,096 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:59,106 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:59,142 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:59,143 INFO L146 ILogger]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:59,145 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:59,327 INFO L146 ILogger]: Checked inductivity of 129 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:29:59,345 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:59,345 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:29:59,345 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:29:59,345 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:29:59,346 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:29:59,346 INFO L146 ILogger]: Start difference. First operand 149 states and 154 transitions. Second operand 21 states. [2019-05-23 11:30:01,001 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:01,002 INFO L146 ILogger]: Finished difference Result 167 states and 172 transitions. [2019-05-23 11:30:01,002 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:30:01,002 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 148 [2019-05-23 11:30:01,003 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:01,003 INFO L146 ILogger]: With dead ends: 167 [2019-05-23 11:30:01,004 INFO L146 ILogger]: Without dead ends: 161 [2019-05-23 11:30:01,005 INFO L146 ILogger]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=1426, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:30:01,005 INFO L146 ILogger]: Start minimizeSevpa. Operand 161 states. [2019-05-23 11:30:01,009 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 161 to 156. [2019-05-23 11:30:01,009 INFO L146 ILogger]: Start removeUnreachable. Operand 156 states. [2019-05-23 11:30:01,010 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 156 states to 156 states and 161 transitions. [2019-05-23 11:30:01,010 INFO L146 ILogger]: Start accepts. Automaton has 156 states and 161 transitions. Word has length 148 [2019-05-23 11:30:01,010 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:01,010 INFO L146 ILogger]: Abstraction has 156 states and 161 transitions. [2019-05-23 11:30:01,010 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:01,011 INFO L146 ILogger]: Start isEmpty. Operand 156 states and 161 transitions. [2019-05-23 11:30:01,011 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 156 [2019-05-23 11:30:01,011 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:01,012 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:30:01,012 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:01,012 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:01,012 INFO L146 ILogger]: Analyzing trace with hash 739259747, now seen corresponding path program 14 times [2019-05-23 11:30:01,012 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:01,012 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:01,013 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:01,013 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:01,013 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:01,046 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:05,637 INFO L146 ILogger]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:05,637 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:05,637 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:05,646 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:05,696 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:05,697 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:05,699 WARN L146 ILogger]: Trace formula consists of 252 conjuncts, 142 conjunts are in the unsatisfiable core [2019-05-23 11:30:05,702 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:07,545 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:30:07,546 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:07,549 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:07,549 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:07,550 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:30:07,765 INFO L146 ILogger]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:07,783 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:07,784 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 48] total 72 [2019-05-23 11:30:07,784 INFO L146 ILogger]: Interpolant automaton has 72 states [2019-05-23 11:30:07,784 INFO L146 ILogger]: Constructing interpolant automaton starting with 72 interpolants. [2019-05-23 11:30:07,786 INFO L146 ILogger]: CoverageRelationStatistics Valid=266, Invalid=4846, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:30:07,786 INFO L146 ILogger]: Start difference. First operand 156 states and 161 transitions. Second operand 72 states. [2019-05-23 11:30:13,785 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:13,785 INFO L146 ILogger]: Finished difference Result 296 states and 306 transitions. [2019-05-23 11:30:13,786 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-05-23 11:30:13,786 INFO L146 ILogger]: Start accepts. Automaton has 72 states. Word has length 155 [2019-05-23 11:30:13,787 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:13,789 INFO L146 ILogger]: With dead ends: 296 [2019-05-23 11:30:13,789 INFO L146 ILogger]: Without dead ends: 290 [2019-05-23 11:30:13,792 INFO L146 ILogger]: 0 DeclaredPredicates, 258 GetRequests, 120 SyntacticMatches, 38 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3015 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=462, Invalid=9840, Unknown=0, NotChecked=0, Total=10302 [2019-05-23 11:30:13,792 INFO L146 ILogger]: Start minimizeSevpa. Operand 290 states. [2019-05-23 11:30:13,799 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 290 to 263. [2019-05-23 11:30:13,799 INFO L146 ILogger]: Start removeUnreachable. Operand 263 states. [2019-05-23 11:30:13,800 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 263 states to 263 states and 273 transitions. [2019-05-23 11:30:13,800 INFO L146 ILogger]: Start accepts. Automaton has 263 states and 273 transitions. Word has length 155 [2019-05-23 11:30:13,800 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:13,800 INFO L146 ILogger]: Abstraction has 263 states and 273 transitions. [2019-05-23 11:30:13,800 INFO L146 ILogger]: Interpolant automaton has 72 states. [2019-05-23 11:30:13,801 INFO L146 ILogger]: Start isEmpty. Operand 263 states and 273 transitions. [2019-05-23 11:30:13,802 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:30:13,802 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:13,802 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:30:13,802 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:13,802 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:13,803 INFO L146 ILogger]: Analyzing trace with hash 1401251255, now seen corresponding path program 15 times [2019-05-23 11:30:13,803 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:13,803 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:13,804 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:13,804 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:13,804 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:13,818 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:14,424 INFO L146 ILogger]: Checked inductivity of 166 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:14,425 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:14,425 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:14,435 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:14,478 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:30:14,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:14,480 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:14,483 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:14,735 INFO L146 ILogger]: Checked inductivity of 166 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:14,754 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:14,754 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:30:14,754 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:30:14,755 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:30:14,755 INFO L146 ILogger]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:14,755 INFO L146 ILogger]: Start difference. First operand 263 states and 273 transitions. Second operand 32 states. [2019-05-23 11:30:16,006 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:16,006 INFO L146 ILogger]: Finished difference Result 509 states and 528 transitions. [2019-05-23 11:30:16,007 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:30:16,007 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 162 [2019-05-23 11:30:16,007 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:16,010 INFO L146 ILogger]: With dead ends: 509 [2019-05-23 11:30:16,010 INFO L146 ILogger]: Without dead ends: 450 [2019-05-23 11:30:16,012 INFO L146 ILogger]: 0 DeclaredPredicates, 217 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=541, Invalid=4151, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:30:16,013 INFO L146 ILogger]: Start minimizeSevpa. Operand 450 states. [2019-05-23 11:30:16,021 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 450 to 346. [2019-05-23 11:30:16,021 INFO L146 ILogger]: Start removeUnreachable. Operand 346 states. [2019-05-23 11:30:16,022 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 346 states to 346 states and 359 transitions. [2019-05-23 11:30:16,022 INFO L146 ILogger]: Start accepts. Automaton has 346 states and 359 transitions. Word has length 162 [2019-05-23 11:30:16,022 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:16,023 INFO L146 ILogger]: Abstraction has 346 states and 359 transitions. [2019-05-23 11:30:16,023 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:30:16,023 INFO L146 ILogger]: Start isEmpty. Operand 346 states and 359 transitions. [2019-05-23 11:30:16,024 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:30:16,024 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:16,024 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:30:16,024 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:16,025 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:16,025 INFO L146 ILogger]: Analyzing trace with hash -2067015209, now seen corresponding path program 16 times [2019-05-23 11:30:16,025 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:16,025 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:16,026 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,026 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:16,026 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,038 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:16,589 INFO L146 ILogger]: Checked inductivity of 166 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:16,590 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:16,590 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:16,598 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:16,636 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:16,636 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:16,637 INFO L146 ILogger]: Trace formula consists of 261 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:16,638 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:16,868 INFO L146 ILogger]: Checked inductivity of 166 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:16,886 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:16,887 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:30:16,887 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:30:16,887 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:30:16,888 INFO L146 ILogger]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:30:16,888 INFO L146 ILogger]: Start difference. First operand 346 states and 359 transitions. Second operand 28 states. [2019-05-23 11:30:17,740 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:17,740 INFO L146 ILogger]: Finished difference Result 533 states and 552 transitions. [2019-05-23 11:30:17,740 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:30:17,741 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 162 [2019-05-23 11:30:17,741 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:17,743 INFO L146 ILogger]: With dead ends: 533 [2019-05-23 11:30:17,743 INFO L146 ILogger]: Without dead ends: 467 [2019-05-23 11:30:17,745 INFO L146 ILogger]: 0 DeclaredPredicates, 209 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=459, Invalid=2847, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:30:17,746 INFO L146 ILogger]: Start minimizeSevpa. Operand 467 states. [2019-05-23 11:30:17,755 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 467 to 384. [2019-05-23 11:30:17,755 INFO L146 ILogger]: Start removeUnreachable. Operand 384 states. [2019-05-23 11:30:17,756 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 384 states to 384 states and 398 transitions. [2019-05-23 11:30:17,756 INFO L146 ILogger]: Start accepts. Automaton has 384 states and 398 transitions. Word has length 162 [2019-05-23 11:30:17,757 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:17,757 INFO L146 ILogger]: Abstraction has 384 states and 398 transitions. [2019-05-23 11:30:17,757 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:30:17,757 INFO L146 ILogger]: Start isEmpty. Operand 384 states and 398 transitions. [2019-05-23 11:30:17,758 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:30:17,758 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:17,758 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:30:17,759 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:17,759 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:17,759 INFO L146 ILogger]: Analyzing trace with hash -1448158416, now seen corresponding path program 17 times [2019-05-23 11:30:17,759 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:17,759 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:17,760 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:17,760 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:17,760 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:17,773 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,080 INFO L146 ILogger]: Checked inductivity of 166 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:18,080 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:18,080 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:18,091 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:18,133 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:30:18,134 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,135 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:18,138 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:18,339 INFO L146 ILogger]: Checked inductivity of 166 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:18,358 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:18,359 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:30:18,359 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:30:18,359 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:30:18,359 INFO L146 ILogger]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:30:18,360 INFO L146 ILogger]: Start difference. First operand 384 states and 398 transitions. Second operand 28 states. [2019-05-23 11:30:19,149 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:19,149 INFO L146 ILogger]: Finished difference Result 726 states and 751 transitions. [2019-05-23 11:30:19,149 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:30:19,149 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 162 [2019-05-23 11:30:19,150 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:19,152 INFO L146 ILogger]: With dead ends: 726 [2019-05-23 11:30:19,152 INFO L146 ILogger]: Without dead ends: 599 [2019-05-23 11:30:19,153 INFO L146 ILogger]: 0 DeclaredPredicates, 212 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=469, Invalid=2953, Unknown=0, NotChecked=0, Total=3422 [2019-05-23 11:30:19,154 INFO L146 ILogger]: Start minimizeSevpa. Operand 599 states. [2019-05-23 11:30:19,165 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 599 to 497. [2019-05-23 11:30:19,165 INFO L146 ILogger]: Start removeUnreachable. Operand 497 states. [2019-05-23 11:30:19,166 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 497 states to 497 states and 515 transitions. [2019-05-23 11:30:19,166 INFO L146 ILogger]: Start accepts. Automaton has 497 states and 515 transitions. Word has length 162 [2019-05-23 11:30:19,166 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:19,167 INFO L146 ILogger]: Abstraction has 497 states and 515 transitions. [2019-05-23 11:30:19,167 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:30:19,167 INFO L146 ILogger]: Start isEmpty. Operand 497 states and 515 transitions. [2019-05-23 11:30:19,168 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:30:19,168 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:19,168 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:30:19,169 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:19,169 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:19,169 INFO L146 ILogger]: Analyzing trace with hash -1262095536, now seen corresponding path program 18 times [2019-05-23 11:30:19,169 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:19,169 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:19,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:19,170 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:19,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:19,182 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:19,677 INFO L146 ILogger]: Checked inductivity of 166 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:19,678 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:19,678 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:19,688 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:19,727 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:30:19,728 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:19,729 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:19,731 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:19,985 INFO L146 ILogger]: Checked inductivity of 166 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:20,003 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:20,003 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:30:20,003 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:30:20,004 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:30:20,004 INFO L146 ILogger]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:20,004 INFO L146 ILogger]: Start difference. First operand 497 states and 515 transitions. Second operand 32 states. [2019-05-23 11:30:21,504 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:21,504 INFO L146 ILogger]: Finished difference Result 767 states and 785 transitions. [2019-05-23 11:30:21,505 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:30:21,505 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 162 [2019-05-23 11:30:21,505 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:21,507 INFO L146 ILogger]: With dead ends: 767 [2019-05-23 11:30:21,508 INFO L146 ILogger]: Without dead ends: 586 [2019-05-23 11:30:21,509 INFO L146 ILogger]: 0 DeclaredPredicates, 217 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=541, Invalid=4151, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:30:21,510 INFO L146 ILogger]: Start minimizeSevpa. Operand 586 states. [2019-05-23 11:30:21,519 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 586 to 383. [2019-05-23 11:30:21,519 INFO L146 ILogger]: Start removeUnreachable. Operand 383 states. [2019-05-23 11:30:21,520 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 383 states to 383 states and 394 transitions. [2019-05-23 11:30:21,520 INFO L146 ILogger]: Start accepts. Automaton has 383 states and 394 transitions. Word has length 162 [2019-05-23 11:30:21,520 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:21,521 INFO L146 ILogger]: Abstraction has 383 states and 394 transitions. [2019-05-23 11:30:21,521 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:30:21,521 INFO L146 ILogger]: Start isEmpty. Operand 383 states and 394 transitions. [2019-05-23 11:30:21,522 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:30:21,522 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:21,522 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:30:21,522 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:21,523 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:21,523 INFO L146 ILogger]: Analyzing trace with hash 1680157079, now seen corresponding path program 19 times [2019-05-23 11:30:21,523 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:21,523 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:21,524 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:21,524 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:21,524 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:21,534 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:21,730 INFO L146 ILogger]: Checked inductivity of 166 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:21,731 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:21,731 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:21,739 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:21,776 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:21,776 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:21,778 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:21,939 INFO L146 ILogger]: Checked inductivity of 166 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:21,959 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:21,959 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:21,959 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:21,959 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:21,960 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:21,960 INFO L146 ILogger]: Start difference. First operand 383 states and 394 transitions. Second operand 26 states. [2019-05-23 11:30:22,473 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:22,473 INFO L146 ILogger]: Finished difference Result 492 states and 502 transitions. [2019-05-23 11:30:22,477 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:30:22,477 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 162 [2019-05-23 11:30:22,477 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:22,479 INFO L146 ILogger]: With dead ends: 492 [2019-05-23 11:30:22,479 INFO L146 ILogger]: Without dead ends: 364 [2019-05-23 11:30:22,480 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=1373, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:30:22,480 INFO L146 ILogger]: Start minimizeSevpa. Operand 364 states. [2019-05-23 11:30:22,486 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 364 to 353. [2019-05-23 11:30:22,487 INFO L146 ILogger]: Start removeUnreachable. Operand 353 states. [2019-05-23 11:30:22,487 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 353 states to 353 states and 362 transitions. [2019-05-23 11:30:22,487 INFO L146 ILogger]: Start accepts. Automaton has 353 states and 362 transitions. Word has length 162 [2019-05-23 11:30:22,487 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:22,487 INFO L146 ILogger]: Abstraction has 353 states and 362 transitions. [2019-05-23 11:30:22,488 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:22,488 INFO L146 ILogger]: Start isEmpty. Operand 353 states and 362 transitions. [2019-05-23 11:30:22,488 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:30:22,488 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:22,489 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:30:22,489 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:22,489 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:22,489 INFO L146 ILogger]: Analyzing trace with hash 309842800, now seen corresponding path program 20 times [2019-05-23 11:30:22,489 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:22,489 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:22,490 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:22,490 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:22,490 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:22,500 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:23,689 INFO L146 ILogger]: Checked inductivity of 166 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:23,690 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:23,690 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:23,698 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:23,759 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:23,759 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:23,760 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:23,762 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:23,948 INFO L146 ILogger]: Checked inductivity of 166 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:23,967 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:23,967 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:23,968 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:23,968 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:23,968 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:23,968 INFO L146 ILogger]: Start difference. First operand 353 states and 362 transitions. Second operand 26 states. [2019-05-23 11:30:24,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:24,786 INFO L146 ILogger]: Finished difference Result 370 states and 378 transitions. [2019-05-23 11:30:24,786 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:24,786 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 162 [2019-05-23 11:30:24,787 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:24,788 INFO L146 ILogger]: With dead ends: 370 [2019-05-23 11:30:24,788 INFO L146 ILogger]: Without dead ends: 272 [2019-05-23 11:30:24,788 INFO L146 ILogger]: 0 DeclaredPredicates, 199 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:30:24,789 INFO L146 ILogger]: Start minimizeSevpa. Operand 272 states. [2019-05-23 11:30:24,794 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 272 to 261. [2019-05-23 11:30:24,794 INFO L146 ILogger]: Start removeUnreachable. Operand 261 states. [2019-05-23 11:30:24,795 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 261 states to 261 states and 269 transitions. [2019-05-23 11:30:24,795 INFO L146 ILogger]: Start accepts. Automaton has 261 states and 269 transitions. Word has length 162 [2019-05-23 11:30:24,795 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:24,796 INFO L146 ILogger]: Abstraction has 261 states and 269 transitions. [2019-05-23 11:30:24,796 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:24,796 INFO L146 ILogger]: Start isEmpty. Operand 261 states and 269 transitions. [2019-05-23 11:30:24,797 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 170 [2019-05-23 11:30:24,797 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:24,797 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:30:24,797 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:24,797 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:24,798 INFO L146 ILogger]: Analyzing trace with hash 201265898, now seen corresponding path program 21 times [2019-05-23 11:30:24,798 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:24,798 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:24,798 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:24,799 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:24,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:24,810 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:25,105 INFO L146 ILogger]: Checked inductivity of 188 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:30:25,106 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:25,106 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:25,115 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:25,189 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:30:25,189 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:25,190 INFO L146 ILogger]: Trace formula consists of 274 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:25,192 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:25,411 INFO L146 ILogger]: Checked inductivity of 188 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:30:25,430 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:25,431 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:30:25,431 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:30:25,431 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:30:25,431 INFO L146 ILogger]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:30:25,432 INFO L146 ILogger]: Start difference. First operand 261 states and 269 transitions. Second operand 28 states. [2019-05-23 11:30:26,349 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:26,350 INFO L146 ILogger]: Finished difference Result 302 states and 310 transitions. [2019-05-23 11:30:26,350 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:30:26,350 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 169 [2019-05-23 11:30:26,351 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:26,351 INFO L146 ILogger]: With dead ends: 302 [2019-05-23 11:30:26,351 INFO L146 ILogger]: Without dead ends: 189 [2019-05-23 11:30:26,352 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=512, Invalid=3028, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:30:26,353 INFO L146 ILogger]: Start minimizeSevpa. Operand 189 states. [2019-05-23 11:30:26,357 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 189 to 184. [2019-05-23 11:30:26,357 INFO L146 ILogger]: Start removeUnreachable. Operand 184 states. [2019-05-23 11:30:26,357 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 184 states to 184 states and 189 transitions. [2019-05-23 11:30:26,358 INFO L146 ILogger]: Start accepts. Automaton has 184 states and 189 transitions. Word has length 169 [2019-05-23 11:30:26,358 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:26,358 INFO L146 ILogger]: Abstraction has 184 states and 189 transitions. [2019-05-23 11:30:26,358 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:30:26,358 INFO L146 ILogger]: Start isEmpty. Operand 184 states and 189 transitions. [2019-05-23 11:30:26,359 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 184 [2019-05-23 11:30:26,359 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:26,359 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:30:26,360 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:26,360 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:26,360 INFO L146 ILogger]: Analyzing trace with hash 1424698513, now seen corresponding path program 22 times [2019-05-23 11:30:26,360 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:26,360 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:26,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:26,361 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:26,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:26,372 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:26,601 INFO L146 ILogger]: Checked inductivity of 232 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:30:26,601 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:26,602 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:26,609 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:26,654 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:26,654 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:26,655 INFO L146 ILogger]: Trace formula consists of 294 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:26,656 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:26,878 INFO L146 ILogger]: Checked inductivity of 232 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:30:26,896 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:26,896 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:30:26,897 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:30:26,897 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:30:26,897 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:30:26,897 INFO L146 ILogger]: Start difference. First operand 184 states and 189 transitions. Second operand 26 states. [2019-05-23 11:30:27,610 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:27,610 INFO L146 ILogger]: Finished difference Result 255 states and 262 transitions. [2019-05-23 11:30:27,611 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:27,611 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 183 [2019-05-23 11:30:27,611 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:27,613 INFO L146 ILogger]: With dead ends: 255 [2019-05-23 11:30:27,613 INFO L146 ILogger]: Without dead ends: 196 [2019-05-23 11:30:27,614 INFO L146 ILogger]: 0 DeclaredPredicates, 220 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:30:27,615 INFO L146 ILogger]: Start minimizeSevpa. Operand 196 states. [2019-05-23 11:30:27,619 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 196 to 191. [2019-05-23 11:30:27,619 INFO L146 ILogger]: Start removeUnreachable. Operand 191 states. [2019-05-23 11:30:27,619 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 191 states to 191 states and 196 transitions. [2019-05-23 11:30:27,619 INFO L146 ILogger]: Start accepts. Automaton has 191 states and 196 transitions. Word has length 183 [2019-05-23 11:30:27,620 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:27,620 INFO L146 ILogger]: Abstraction has 191 states and 196 transitions. [2019-05-23 11:30:27,620 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:30:27,620 INFO L146 ILogger]: Start isEmpty. Operand 191 states and 196 transitions. [2019-05-23 11:30:27,621 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 191 [2019-05-23 11:30:27,621 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:27,621 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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 11:30:27,621 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:27,622 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:27,622 INFO L146 ILogger]: Analyzing trace with hash -2030146807, now seen corresponding path program 23 times [2019-05-23 11:30:27,622 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:27,622 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:27,623 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:27,623 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:27,623 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:27,634 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:29,356 INFO L146 ILogger]: Checked inductivity of 254 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:30:29,357 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:29,357 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:29,365 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:29,411 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:30:29,412 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:29,413 INFO L146 ILogger]: Trace formula consists of 307 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:30:29,416 INFO L146 ILogger]: Computing forward predicates...