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_sum_const_m2_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:47,336 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:47,338 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:47,350 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:47,350 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:47,351 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:47,353 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:47,354 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:47,356 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:47,357 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:47,358 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:47,358 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:47,359 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:47,360 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:47,362 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:47,362 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:47,363 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:47,365 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:47,367 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:47,369 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:47,370 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:47,371 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:47,374 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:47,374 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:47,374 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:47,375 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:47,376 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:47,377 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:47,377 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:47,378 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:47,379 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:47,379 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:47,381 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:47,381 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:47,382 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:47,382 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:47,382 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:47,383 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:47,384 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:47,384 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:47,402 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:47,402 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:47,403 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:47,403 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:47,404 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:47,404 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:47,404 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:47,404 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:47,405 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:47,406 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:47,407 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:47,407 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:47,407 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:47,407 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:47,407 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:47,408 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:47,408 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:47,408 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:47,408 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:47,408 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:47,409 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:47,409 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:47,409 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:47,409 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:47,409 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:47,412 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:47,412 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:47,412 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:47,413 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 11:29:47,458 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:47,470 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:47,473 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:47,474 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:47,474 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:47,475 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_const_m2_true-unreach-call.c [2019-05-23 11:29:47,530 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43c9ca3e/8d4f38407a874f159eed24fc83d35786/FLAG29dfe892a [2019-05-23 11:29:47,969 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:47,970 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_const_m2_true-unreach-call.c [2019-05-23 11:29:47,975 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43c9ca3e/8d4f38407a874f159eed24fc83d35786/FLAG29dfe892a [2019-05-23 11:29:48,325 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43c9ca3e/8d4f38407a874f159eed24fc83d35786 [2019-05-23 11:29:48,334 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:48,336 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:48,337 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:48,337 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:48,342 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:48,344 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,347 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9fa274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48, skipping insertion in model container [2019-05-23 11:29:48,347 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,355 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:48,376 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:48,555 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:48,561 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:48,606 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:48,642 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:48,643 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48 WrapperNode [2019-05-23 11:29:48,643 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:48,645 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:48,646 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:48,646 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:48,657 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,674 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,702 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:48,705 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:48,705 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:48,705 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:48,717 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,718 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,720 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,720 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,729 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,735 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,742 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (1/1) ... [2019-05-23 11:29:48,749 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:48,751 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:48,751 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:48,751 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:48,752 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (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 11:29:48,950 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:29:48,950 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:48,951 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:48,951 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:48,951 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:48,951 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:49,442 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:49,442 INFO L146 ILogger]: Removed 11 assume(true) statements. [2019-05-23 11:29:49,444 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:49 BoogieIcfgContainer [2019-05-23 11:29:49,444 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:49,445 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:49,445 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:49,448 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:49,449 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:48" (1/3) ... [2019-05-23 11:29:49,449 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddae5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:49, skipping insertion in model container [2019-05-23 11:29:49,450 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:48" (2/3) ... [2019-05-23 11:29:49,450 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddae5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:49, skipping insertion in model container [2019-05-23 11:29:49,450 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:49" (3/3) ... [2019-05-23 11:29:49,456 INFO L146 ILogger]: Analyzing ICFG zero_sum_const_m2_true-unreach-call.c [2019-05-23 11:29:49,465 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:49,473 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:49,489 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:49,518 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:49,518 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:49,518 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:49,519 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:49,519 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:49,519 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:49,519 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:49,519 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:49,519 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:49,533 INFO L146 ILogger]: Start isEmpty. Operand 62 states. [2019-05-23 11:29:49,541 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:29:49,541 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:49,542 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] [2019-05-23 11:29:49,544 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:49,548 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:49,549 INFO L146 ILogger]: Analyzing trace with hash 788142013, now seen corresponding path program 1 times [2019-05-23 11:29:49,550 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:49,551 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:49,594 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,595 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:49,595 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,633 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,672 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 11:29:49,674 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:49,675 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:49,678 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:49,689 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:49,690 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:49,692 INFO L146 ILogger]: Start difference. First operand 62 states. Second operand 2 states. [2019-05-23 11:29:49,713 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:49,713 INFO L146 ILogger]: Finished difference Result 106 states and 125 transitions. [2019-05-23 11:29:49,714 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:49,715 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 27 [2019-05-23 11:29:49,716 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:49,726 INFO L146 ILogger]: With dead ends: 106 [2019-05-23 11:29:49,727 INFO L146 ILogger]: Without dead ends: 56 [2019-05-23 11:29:49,730 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 11:29:49,749 INFO L146 ILogger]: Start minimizeSevpa. Operand 56 states. [2019-05-23 11:29:49,765 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-05-23 11:29:49,766 INFO L146 ILogger]: Start removeUnreachable. Operand 56 states. [2019-05-23 11:29:49,769 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2019-05-23 11:29:49,773 INFO L146 ILogger]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 27 [2019-05-23 11:29:49,774 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:49,774 INFO L146 ILogger]: Abstraction has 56 states and 60 transitions. [2019-05-23 11:29:49,774 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:49,774 INFO L146 ILogger]: Start isEmpty. Operand 56 states and 60 transitions. [2019-05-23 11:29:49,777 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:29:49,777 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:49,777 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] [2019-05-23 11:29:49,778 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:49,778 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:49,778 INFO L146 ILogger]: Analyzing trace with hash -776084503, now seen corresponding path program 1 times [2019-05-23 11:29:49,778 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:49,778 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:49,780 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,781 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:49,781 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,812 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,914 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 11:29:49,915 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:49,915 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:49,916 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:49,917 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:49,917 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:49,917 INFO L146 ILogger]: Start difference. First operand 56 states and 60 transitions. Second operand 5 states. [2019-05-23 11:29:50,187 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:50,187 INFO L146 ILogger]: Finished difference Result 77 states and 84 transitions. [2019-05-23 11:29:50,188 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:50,189 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 27 [2019-05-23 11:29:50,189 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:50,190 INFO L146 ILogger]: With dead ends: 77 [2019-05-23 11:29:50,190 INFO L146 ILogger]: Without dead ends: 71 [2019-05-23 11:29:50,192 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 11:29:50,193 INFO L146 ILogger]: Start minimizeSevpa. Operand 71 states. [2019-05-23 11:29:50,204 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 71 to 63. [2019-05-23 11:29:50,204 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:29:50,207 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2019-05-23 11:29:50,208 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 27 [2019-05-23 11:29:50,208 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:50,208 INFO L146 ILogger]: Abstraction has 63 states and 70 transitions. [2019-05-23 11:29:50,208 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:50,209 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 70 transitions. [2019-05-23 11:29:50,210 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:29:50,210 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:50,210 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] [2019-05-23 11:29:50,215 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:50,215 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:50,215 INFO L146 ILogger]: Analyzing trace with hash -2098103204, now seen corresponding path program 1 times [2019-05-23 11:29:50,215 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:50,216 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:50,217 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:50,217 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:50,217 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:50,250 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:50,379 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 11:29:50,380 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:50,380 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 11:29:50,394 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:50,421 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:50,422 INFO L146 ILogger]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:50,428 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:50,465 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 11:29:50,490 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:50,490 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:50,491 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:50,491 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:50,492 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:50,492 INFO L146 ILogger]: Start difference. First operand 63 states and 70 transitions. Second operand 7 states. [2019-05-23 11:29:50,944 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:50,944 INFO L146 ILogger]: Finished difference Result 131 states and 147 transitions. [2019-05-23 11:29:50,947 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:50,947 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 34 [2019-05-23 11:29:50,948 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:50,949 INFO L146 ILogger]: With dead ends: 131 [2019-05-23 11:29:50,950 INFO L146 ILogger]: Without dead ends: 86 [2019-05-23 11:29:50,950 INFO L146 ILogger]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:50,954 INFO L146 ILogger]: Start minimizeSevpa. Operand 86 states. [2019-05-23 11:29:50,968 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 86 to 68. [2019-05-23 11:29:50,968 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:29:50,972 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2019-05-23 11:29:50,972 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 34 [2019-05-23 11:29:50,972 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:50,974 INFO L146 ILogger]: Abstraction has 68 states and 72 transitions. [2019-05-23 11:29:50,974 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:50,974 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 72 transitions. [2019-05-23 11:29:50,976 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:29:50,976 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:50,977 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] [2019-05-23 11:29:50,977 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:50,977 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:50,977 INFO L146 ILogger]: Analyzing trace with hash 1279945822, now seen corresponding path program 1 times [2019-05-23 11:29:50,978 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:50,979 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:50,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:50,980 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:50,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,016 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,119 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:29:51,120 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:51,120 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 11:29:51,140 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:51,173 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,174 INFO L146 ILogger]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:51,177 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:51,297 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:29:51,316 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:51,316 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:51,317 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:51,317 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:51,317 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:51,317 INFO L146 ILogger]: Start difference. First operand 68 states and 72 transitions. Second operand 9 states. [2019-05-23 11:29:51,982 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:51,982 INFO L146 ILogger]: Finished difference Result 140 states and 148 transitions. [2019-05-23 11:29:51,982 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:51,983 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 67 [2019-05-23 11:29:51,983 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:51,984 INFO L146 ILogger]: With dead ends: 140 [2019-05-23 11:29:51,985 INFO L146 ILogger]: Without dead ends: 91 [2019-05-23 11:29:51,985 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:51,986 INFO L146 ILogger]: Start minimizeSevpa. Operand 91 states. [2019-05-23 11:29:51,992 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 91 to 73. [2019-05-23 11:29:51,992 INFO L146 ILogger]: Start removeUnreachable. Operand 73 states. [2019-05-23 11:29:51,993 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2019-05-23 11:29:51,993 INFO L146 ILogger]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 67 [2019-05-23 11:29:51,993 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:51,994 INFO L146 ILogger]: Abstraction has 73 states and 77 transitions. [2019-05-23 11:29:51,994 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:51,994 INFO L146 ILogger]: Start isEmpty. Operand 73 states and 77 transitions. [2019-05-23 11:29:51,996 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:29:51,996 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:51,996 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:51,996 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:51,997 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:51,997 INFO L146 ILogger]: Analyzing trace with hash -114277078, now seen corresponding path program 2 times [2019-05-23 11:29:51,997 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:51,997 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:51,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,998 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:51,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,016 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,103 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:52,103 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:52,104 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 11:29:52,114 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:52,167 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:52,167 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,168 INFO L146 ILogger]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:52,171 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:52,312 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:52,331 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:52,332 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:52,332 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:52,332 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:52,333 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:52,333 INFO L146 ILogger]: Start difference. First operand 73 states and 77 transitions. Second operand 9 states. [2019-05-23 11:29:52,573 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-05-23 11:29:52,875 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:52,875 INFO L146 ILogger]: Finished difference Result 135 states and 142 transitions. [2019-05-23 11:29:52,875 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:52,876 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 72 [2019-05-23 11:29:52,876 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:52,878 INFO L146 ILogger]: With dead ends: 135 [2019-05-23 11:29:52,878 INFO L146 ILogger]: Without dead ends: 95 [2019-05-23 11:29:52,879 INFO L146 ILogger]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:52,880 INFO L146 ILogger]: Start minimizeSevpa. Operand 95 states. [2019-05-23 11:29:52,885 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 95 to 80. [2019-05-23 11:29:52,886 INFO L146 ILogger]: Start removeUnreachable. Operand 80 states. [2019-05-23 11:29:52,887 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2019-05-23 11:29:52,887 INFO L146 ILogger]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 72 [2019-05-23 11:29:52,887 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:52,887 INFO L146 ILogger]: Abstraction has 80 states and 84 transitions. [2019-05-23 11:29:52,888 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:52,888 INFO L146 ILogger]: Start isEmpty. Operand 80 states and 84 transitions. [2019-05-23 11:29:52,890 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:29:52,890 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:52,890 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:52,891 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:52,891 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:52,891 INFO L146 ILogger]: Analyzing trace with hash 509881570, now seen corresponding path program 3 times [2019-05-23 11:29:52,891 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:52,891 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:52,892 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,892 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:52,893 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,910 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,090 INFO L146 ILogger]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:29:53,090 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:53,090 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 11:29:53,107 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:53,142 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:29:53,143 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,143 INFO L146 ILogger]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:53,155 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:53,268 INFO L146 ILogger]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:29:53,295 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:53,296 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:53,296 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:53,296 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:53,297 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:53,297 INFO L146 ILogger]: Start difference. First operand 80 states and 84 transitions. Second operand 9 states. [2019-05-23 11:29:53,728 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:53,728 INFO L146 ILogger]: Finished difference Result 128 states and 134 transitions. [2019-05-23 11:29:53,728 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:53,729 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 79 [2019-05-23 11:29:53,729 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:53,730 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:29:53,730 INFO L146 ILogger]: Without dead ends: 97 [2019-05-23 11:29:53,731 INFO L146 ILogger]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:53,732 INFO L146 ILogger]: Start minimizeSevpa. Operand 97 states. [2019-05-23 11:29:53,737 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 97 to 87. [2019-05-23 11:29:53,737 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:29:53,738 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2019-05-23 11:29:53,738 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 79 [2019-05-23 11:29:53,739 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:53,739 INFO L146 ILogger]: Abstraction has 87 states and 91 transitions. [2019-05-23 11:29:53,739 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:53,739 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 91 transitions. [2019-05-23 11:29:53,740 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 87 [2019-05-23 11:29:53,741 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:53,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:53,741 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:53,741 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:53,742 INFO L146 ILogger]: Analyzing trace with hash -981350109, now seen corresponding path program 4 times [2019-05-23 11:29:53,742 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:53,742 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:53,743 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:53,743 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:53,743 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:53,758 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,865 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:29:53,866 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:53,866 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 11:29:53,877 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:53,912 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:53,913 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,913 INFO L146 ILogger]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:53,916 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:54,301 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:29:54,321 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:54,321 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:54,322 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:54,322 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:54,322 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:54,322 INFO L146 ILogger]: Start difference. First operand 87 states and 91 transitions. Second operand 9 states. [2019-05-23 11:29:54,561 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:54,561 INFO L146 ILogger]: Finished difference Result 121 states and 126 transitions. [2019-05-23 11:29:54,562 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:54,562 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 86 [2019-05-23 11:29:54,562 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:54,563 INFO L146 ILogger]: With dead ends: 121 [2019-05-23 11:29:54,563 INFO L146 ILogger]: Without dead ends: 99 [2019-05-23 11:29:54,564 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:54,565 INFO L146 ILogger]: Start minimizeSevpa. Operand 99 states. [2019-05-23 11:29:54,572 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 99 to 94. [2019-05-23 11:29:54,572 INFO L146 ILogger]: Start removeUnreachable. Operand 94 states. [2019-05-23 11:29:54,573 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2019-05-23 11:29:54,573 INFO L146 ILogger]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 86 [2019-05-23 11:29:54,574 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:54,574 INFO L146 ILogger]: Abstraction has 94 states and 98 transitions. [2019-05-23 11:29:54,574 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:54,574 INFO L146 ILogger]: Start isEmpty. Operand 94 states and 98 transitions. [2019-05-23 11:29:54,575 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:29:54,576 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:54,576 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, 1, 1, 1, 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 11:29:54,576 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:54,576 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:54,577 INFO L146 ILogger]: Analyzing trace with hash 1931543209, now seen corresponding path program 5 times [2019-05-23 11:29:54,578 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:54,579 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:54,579 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,579 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:54,580 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,537 WARN L146 ILogger]: Spent 131.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2019-05-23 11:29:56,243 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2019-05-23 11:29:57,364 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2019-05-23 11:29:58,757 INFO L146 ILogger]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:58,757 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:58,757 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 11:29:58,767 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:58,806 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:29:58,806 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:58,809 INFO L146 ILogger]: Trace formula consists of 153 conjuncts, 73 conjunts are in the unsatisfiable core [2019-05-23 11:29:58,814 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:59,213 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:29:59,213 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:59,225 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:59,225 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:59,225 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-05-23 11:30:00,714 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 15 treesize of output 7 [2019-05-23 11:30:00,715 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:00,720 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:00,720 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 11:30:00,721 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:10 [2019-05-23 11:30:00,918 INFO L146 ILogger]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:00,937 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:00,937 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 36] total 71 [2019-05-23 11:30:00,938 INFO L146 ILogger]: Interpolant automaton has 71 states [2019-05-23 11:30:00,938 INFO L146 ILogger]: Constructing interpolant automaton starting with 71 interpolants. [2019-05-23 11:30:00,941 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=4647, Unknown=0, NotChecked=0, Total=4970 [2019-05-23 11:30:00,941 INFO L146 ILogger]: Start difference. First operand 94 states and 98 transitions. Second operand 71 states. [2019-05-23 11:30:06,779 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:06,779 INFO L146 ILogger]: Finished difference Result 172 states and 179 transitions. [2019-05-23 11:30:06,779 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-05-23 11:30:06,780 INFO L146 ILogger]: Start accepts. Automaton has 71 states. Word has length 93 [2019-05-23 11:30:06,780 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:06,782 INFO L146 ILogger]: With dead ends: 172 [2019-05-23 11:30:06,782 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:30:06,788 INFO L146 ILogger]: 0 DeclaredPredicates, 177 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3916 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=747, Invalid=11463, Unknown=0, NotChecked=0, Total=12210 [2019-05-23 11:30:06,789 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:30:06,796 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 141. [2019-05-23 11:30:06,796 INFO L146 ILogger]: Start removeUnreachable. Operand 141 states. [2019-05-23 11:30:06,797 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 141 states to 141 states and 148 transitions. [2019-05-23 11:30:06,797 INFO L146 ILogger]: Start accepts. Automaton has 141 states and 148 transitions. Word has length 93 [2019-05-23 11:30:06,798 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:06,798 INFO L146 ILogger]: Abstraction has 141 states and 148 transitions. [2019-05-23 11:30:06,798 INFO L146 ILogger]: Interpolant automaton has 71 states. [2019-05-23 11:30:06,798 INFO L146 ILogger]: Start isEmpty. Operand 141 states and 148 transitions. [2019-05-23 11:30:06,800 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:30:06,800 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:06,800 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, 1, 1, 1, 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 11:30:06,800 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:06,801 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:06,801 INFO L146 ILogger]: Analyzing trace with hash 1750222236, now seen corresponding path program 6 times [2019-05-23 11:30:06,801 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:06,801 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:06,802 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:06,802 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:06,802 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:06,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:06,968 INFO L146 ILogger]: Checked inductivity of 58 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:30:06,968 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:06,968 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 11:30:06,978 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:07,007 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:07,007 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:07,008 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:07,012 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:07,274 INFO L146 ILogger]: Checked inductivity of 58 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:30:07,293 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:07,293 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:07,294 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:07,295 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:07,295 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:07,295 INFO L146 ILogger]: Start difference. First operand 141 states and 148 transitions. Second operand 21 states. [2019-05-23 11:30:08,081 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:08,081 INFO L146 ILogger]: Finished difference Result 296 states and 311 transitions. [2019-05-23 11:30:08,082 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:08,082 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 100 [2019-05-23 11:30:08,082 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:08,084 INFO L146 ILogger]: With dead ends: 296 [2019-05-23 11:30:08,084 INFO L146 ILogger]: Without dead ends: 267 [2019-05-23 11:30:08,085 INFO L146 ILogger]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:08,085 INFO L146 ILogger]: Start minimizeSevpa. Operand 267 states. [2019-05-23 11:30:08,097 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 267 to 240. [2019-05-23 11:30:08,097 INFO L146 ILogger]: Start removeUnreachable. Operand 240 states. [2019-05-23 11:30:08,099 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 240 states to 240 states and 253 transitions. [2019-05-23 11:30:08,099 INFO L146 ILogger]: Start accepts. Automaton has 240 states and 253 transitions. Word has length 100 [2019-05-23 11:30:08,099 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:08,099 INFO L146 ILogger]: Abstraction has 240 states and 253 transitions. [2019-05-23 11:30:08,099 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:08,100 INFO L146 ILogger]: Start isEmpty. Operand 240 states and 253 transitions. [2019-05-23 11:30:08,101 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:30:08,102 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:08,102 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, 1, 1, 1, 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 11:30:08,102 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:08,102 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:08,103 INFO L146 ILogger]: Analyzing trace with hash -2021841309, now seen corresponding path program 7 times [2019-05-23 11:30:08,103 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:08,103 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:08,104 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,104 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:08,104 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,114 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:08,314 INFO L146 ILogger]: Checked inductivity of 58 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:30:08,314 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:08,314 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 11:30:08,326 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:08,361 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:08,362 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:08,364 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:08,488 INFO L146 ILogger]: Checked inductivity of 58 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:30:08,506 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:08,506 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:08,507 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:08,507 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:08,508 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:08,508 INFO L146 ILogger]: Start difference. First operand 240 states and 253 transitions. Second operand 20 states. [2019-05-23 11:30:08,929 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:08,930 INFO L146 ILogger]: Finished difference Result 302 states and 314 transitions. [2019-05-23 11:30:08,930 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:08,930 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 100 [2019-05-23 11:30:08,931 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:08,932 INFO L146 ILogger]: With dead ends: 302 [2019-05-23 11:30:08,932 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:30:08,933 INFO L146 ILogger]: 0 DeclaredPredicates, 124 GetRequests, 94 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 11:30:08,934 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:30:08,942 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 224. [2019-05-23 11:30:08,942 INFO L146 ILogger]: Start removeUnreachable. Operand 224 states. [2019-05-23 11:30:08,943 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 224 states to 224 states and 235 transitions. [2019-05-23 11:30:08,943 INFO L146 ILogger]: Start accepts. Automaton has 224 states and 235 transitions. Word has length 100 [2019-05-23 11:30:08,943 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:08,944 INFO L146 ILogger]: Abstraction has 224 states and 235 transitions. [2019-05-23 11:30:08,944 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:08,944 INFO L146 ILogger]: Start isEmpty. Operand 224 states and 235 transitions. [2019-05-23 11:30:08,946 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:30:08,946 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:08,946 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, 1, 1, 1, 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 11:30:08,946 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:08,946 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:08,947 INFO L146 ILogger]: Analyzing trace with hash 1760794922, now seen corresponding path program 8 times [2019-05-23 11:30:08,947 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:08,947 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:08,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,948 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:08,948 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,958 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,293 INFO L146 ILogger]: Checked inductivity of 58 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:30:09,294 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:09,294 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 11:30:09,302 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:09,327 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:09,327 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,328 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:09,330 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:09,510 INFO L146 ILogger]: Checked inductivity of 58 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:30:09,537 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:09,537 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:09,538 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:09,538 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:09,538 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:09,539 INFO L146 ILogger]: Start difference. First operand 224 states and 235 transitions. Second operand 20 states. [2019-05-23 11:30:10,030 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:10,030 INFO L146 ILogger]: Finished difference Result 302 states and 312 transitions. [2019-05-23 11:30:10,030 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:10,030 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 100 [2019-05-23 11:30:10,030 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:10,032 INFO L146 ILogger]: With dead ends: 302 [2019-05-23 11:30:10,032 INFO L146 ILogger]: Without dead ends: 241 [2019-05-23 11:30:10,033 INFO L146 ILogger]: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:10,034 INFO L146 ILogger]: Start minimizeSevpa. Operand 241 states. [2019-05-23 11:30:10,041 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 241 to 216. [2019-05-23 11:30:10,042 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:30:10,042 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2019-05-23 11:30:10,043 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 100 [2019-05-23 11:30:10,043 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:10,043 INFO L146 ILogger]: Abstraction has 216 states and 225 transitions. [2019-05-23 11:30:10,043 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:10,043 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 225 transitions. [2019-05-23 11:30:10,044 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:30:10,045 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:10,045 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, 1, 1, 1, 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 11:30:10,045 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:10,045 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:10,045 INFO L146 ILogger]: Analyzing trace with hash -145646095, now seen corresponding path program 9 times [2019-05-23 11:30:10,046 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:10,046 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:10,046 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:10,047 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:10,047 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:10,057 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:10,205 INFO L146 ILogger]: Checked inductivity of 58 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:30:10,205 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:10,206 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 11:30:10,214 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:10,240 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:10,240 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:10,241 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:10,242 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:10,507 INFO L146 ILogger]: Checked inductivity of 58 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:30:10,527 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:10,527 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:10,527 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:10,528 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:10,528 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:10,529 INFO L146 ILogger]: Start difference. First operand 216 states and 225 transitions. Second operand 24 states. [2019-05-23 11:30:11,659 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:11,659 INFO L146 ILogger]: Finished difference Result 298 states and 309 transitions. [2019-05-23 11:30:11,661 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:30:11,661 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 100 [2019-05-23 11:30:11,662 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:11,663 INFO L146 ILogger]: With dead ends: 298 [2019-05-23 11:30:11,663 INFO L146 ILogger]: Without dead ends: 221 [2019-05-23 11:30:11,665 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=309, Invalid=2043, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:30:11,665 INFO L146 ILogger]: Start minimizeSevpa. Operand 221 states. [2019-05-23 11:30:11,670 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 221 to 168. [2019-05-23 11:30:11,670 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:30:11,671 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 176 transitions. [2019-05-23 11:30:11,671 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 176 transitions. Word has length 100 [2019-05-23 11:30:11,671 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:11,671 INFO L146 ILogger]: Abstraction has 168 states and 176 transitions. [2019-05-23 11:30:11,672 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:11,672 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 176 transitions. [2019-05-23 11:30:11,673 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:30:11,673 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:11,673 INFO L146 ILogger]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:11,673 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:11,673 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:11,674 INFO L146 ILogger]: Analyzing trace with hash 1308792599, now seen corresponding path program 10 times [2019-05-23 11:30:11,674 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:11,674 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:11,675 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:11,675 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:11,675 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:11,684 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,016 INFO L146 ILogger]: Checked inductivity of 69 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-05-23 11:30:12,016 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:12,017 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 11:30:12,025 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:12,047 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:12,048 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,049 INFO L146 ILogger]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:12,050 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:12,142 INFO L146 ILogger]: Checked inductivity of 69 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-05-23 11:30:12,161 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:12,162 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:12,162 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:12,162 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:12,162 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:12,163 INFO L146 ILogger]: Start difference. First operand 168 states and 176 transitions. Second operand 20 states. [2019-05-23 11:30:12,751 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:12,752 INFO L146 ILogger]: Finished difference Result 225 states and 235 transitions. [2019-05-23 11:30:12,752 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:30:12,752 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 105 [2019-05-23 11:30:12,753 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:12,753 INFO L146 ILogger]: With dead ends: 225 [2019-05-23 11:30:12,754 INFO L146 ILogger]: Without dead ends: 125 [2019-05-23 11:30:12,755 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:30:12,755 INFO L146 ILogger]: Start minimizeSevpa. Operand 125 states. [2019-05-23 11:30:12,759 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 125 to 120. [2019-05-23 11:30:12,759 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:30:12,760 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2019-05-23 11:30:12,760 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 105 [2019-05-23 11:30:12,760 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:12,760 INFO L146 ILogger]: Abstraction has 120 states and 124 transitions. [2019-05-23 11:30:12,760 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:12,760 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 124 transitions. [2019-05-23 11:30:12,761 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:30:12,761 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:12,762 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:12,762 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:12,762 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:12,762 INFO L146 ILogger]: Analyzing trace with hash 1072746430, now seen corresponding path program 11 times [2019-05-23 11:30:12,762 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:12,763 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:12,763 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:12,763 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:12,763 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:12,773 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:13,611 INFO L146 ILogger]: Checked inductivity of 99 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:30:13,612 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:13,612 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 11:30:13,620 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:13,660 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:13,660 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:13,661 INFO L146 ILogger]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:13,663 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:13,989 INFO L146 ILogger]: Checked inductivity of 99 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:30:14,007 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:14,007 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:14,007 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:14,008 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:14,008 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:14,008 INFO L146 ILogger]: Start difference. First operand 120 states and 124 transitions. Second operand 21 states. [2019-05-23 11:30:14,909 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:14,909 INFO L146 ILogger]: Finished difference Result 138 states and 142 transitions. [2019-05-23 11:30:14,910 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:14,910 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 119 [2019-05-23 11:30:14,911 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:14,912 INFO L146 ILogger]: With dead ends: 138 [2019-05-23 11:30:14,912 INFO L146 ILogger]: Without dead ends: 132 [2019-05-23 11:30:14,913 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=316, Invalid=1576, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:30:14,914 INFO L146 ILogger]: Start minimizeSevpa. Operand 132 states. [2019-05-23 11:30:14,917 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 132 to 127. [2019-05-23 11:30:14,917 INFO L146 ILogger]: Start removeUnreachable. Operand 127 states. [2019-05-23 11:30:14,918 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2019-05-23 11:30:14,918 INFO L146 ILogger]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 119 [2019-05-23 11:30:14,918 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:14,918 INFO L146 ILogger]: Abstraction has 127 states and 131 transitions. [2019-05-23 11:30:14,918 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:14,918 INFO L146 ILogger]: Start isEmpty. Operand 127 states and 131 transitions. [2019-05-23 11:30:14,919 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:30:14,919 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:14,920 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, 1, 1, 1, 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 11:30:14,920 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:14,920 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:14,920 INFO L146 ILogger]: Analyzing trace with hash 990545639, now seen corresponding path program 12 times [2019-05-23 11:30:14,920 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:14,921 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:14,921 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:14,921 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:14,922 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:14,946 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:20,351 INFO L146 ILogger]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:20,352 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:20,352 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 11:30:20,360 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:20,394 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:20,394 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:20,397 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 99 conjunts are in the unsatisfiable core [2019-05-23 11:30:20,399 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:20,439 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:30:20,440 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:20,452 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:20,453 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:30:20,453 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:18 [2019-05-23 11:30:33,430 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:33,430 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2019-05-23 11:30:33,431 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:33,437 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:33,438 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:33,438 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:3 [2019-05-23 11:30:33,728 INFO L146 ILogger]: Checked inductivity of 114 backedges. 9 proven. 96 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:30:33,747 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:33,747 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 49] total 100 [2019-05-23 11:30:33,748 INFO L146 ILogger]: Interpolant automaton has 100 states [2019-05-23 11:30:33,748 INFO L146 ILogger]: Constructing interpolant automaton starting with 100 interpolants. [2019-05-23 11:30:33,751 INFO L146 ILogger]: CoverageRelationStatistics Valid=366, Invalid=9518, Unknown=16, NotChecked=0, Total=9900 [2019-05-23 11:30:33,751 INFO L146 ILogger]: Start difference. First operand 127 states and 131 transitions. Second operand 100 states. [2019-05-23 11:30:36,314 WARN L146 ILogger]: Spent 387.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2019-05-23 11:30:37,442 WARN L146 ILogger]: Spent 717.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2019-05-23 11:30:38,238 WARN L146 ILogger]: Spent 716.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2019-05-23 11:30:39,303 WARN L146 ILogger]: Spent 689.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2019-05-23 11:30:40,073 WARN L146 ILogger]: Spent 699.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2019-05-23 11:30:40,927 WARN L146 ILogger]: Spent 700.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2019-05-23 11:30:42,928 WARN L146 ILogger]: Spent 734.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2019-05-23 11:30:46,728 WARN L146 ILogger]: Spent 2.91 s on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-05-23 11:30:47,503 WARN L146 ILogger]: Spent 697.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-05-23 11:30:48,790 WARN L146 ILogger]: Spent 1.14 s on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2019-05-23 11:30:51,159 WARN L146 ILogger]: Spent 730.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2019-05-23 11:30:52,007 WARN L146 ILogger]: Spent 697.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2019-05-23 11:30:53,710 WARN L146 ILogger]: Spent 702.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2019-05-23 11:30:54,657 WARN L146 ILogger]: Spent 699.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35