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_const5_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:46,336 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:46,338 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:46,351 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:46,351 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:46,352 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:46,354 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:46,356 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:46,357 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:46,358 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:46,359 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:46,359 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:46,360 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:46,361 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:46,363 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:46,363 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:46,364 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:46,366 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:46,369 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:46,370 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:46,372 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:46,373 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:46,376 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:46,376 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:46,376 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:46,377 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:46,378 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:46,379 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:46,379 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:46,380 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:46,381 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:46,381 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:46,382 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:46,383 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:46,383 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:46,384 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:46,384 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:46,385 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:46,386 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:46,386 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:46,401 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:46,402 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:46,403 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:46,403 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:46,403 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:46,404 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:46,404 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:46,404 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:46,404 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:46,405 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:46,405 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:46,405 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:46,405 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:46,405 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:46,405 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:46,406 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:46,406 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:46,406 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:46,406 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:46,407 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:46,407 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:46,407 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:46,407 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:46,407 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:46,408 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:46,408 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:46,408 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:46,408 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:46,408 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 11:29:46,452 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:46,465 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:46,469 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:46,470 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:46,471 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:46,471 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_const5_true-unreach-call.c [2019-05-23 11:29:46,526 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511147ace/e666ea3a7f63413286caed4f37dd17ed/FLAGaa5979299 [2019-05-23 11:29:46,943 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:46,944 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_const5_true-unreach-call.c [2019-05-23 11:29:46,950 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511147ace/e666ea3a7f63413286caed4f37dd17ed/FLAGaa5979299 [2019-05-23 11:29:47,327 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511147ace/e666ea3a7f63413286caed4f37dd17ed [2019-05-23 11:29:47,336 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:47,338 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:47,339 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:47,339 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:47,342 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:47,343 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,346 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b634ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47, skipping insertion in model container [2019-05-23 11:29:47,347 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,354 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:47,377 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:47,581 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:47,586 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:47,616 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:47,638 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:47,639 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47 WrapperNode [2019-05-23 11:29:47,639 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:47,640 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:47,640 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:47,640 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:47,649 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,658 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,686 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:47,686 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:47,686 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:47,686 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:47,697 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,697 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,700 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,701 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,708 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,808 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,810 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (1/1) ... [2019-05-23 11:29:47,812 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:47,813 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:47,813 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:47,813 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:47,814 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (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 11:29:47,872 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:29:47,872 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:47,872 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:47,872 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:47,872 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:47,872 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:48,542 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:48,542 INFO L146 ILogger]: Removed 17 assume(true) statements. [2019-05-23 11:29:48,543 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:48 BoogieIcfgContainer [2019-05-23 11:29:48,543 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:48,544 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:48,544 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:48,548 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:48,548 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:47" (1/3) ... [2019-05-23 11:29:48,549 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff5d90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:48, skipping insertion in model container [2019-05-23 11:29:48,549 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:47" (2/3) ... [2019-05-23 11:29:48,550 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff5d90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:48, skipping insertion in model container [2019-05-23 11:29:48,550 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:48" (3/3) ... [2019-05-23 11:29:48,551 INFO L146 ILogger]: Analyzing ICFG zero_sum_const5_true-unreach-call.c [2019-05-23 11:29:48,561 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:48,571 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:48,592 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:48,624 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:48,625 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:48,625 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:48,626 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:48,628 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:48,628 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:48,628 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:48,629 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:48,629 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:48,645 INFO L146 ILogger]: Start isEmpty. Operand 110 states. [2019-05-23 11:29:48,654 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:29:48,654 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:48,655 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:48,657 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:48,663 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:48,663 INFO L146 ILogger]: Analyzing trace with hash 234678719, now seen corresponding path program 1 times [2019-05-23 11:29:48,665 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:48,665 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:48,714 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:48,715 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:48,715 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:48,759 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:48,801 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 11:29:48,804 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:48,805 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:48,809 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:48,823 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:48,824 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:48,826 INFO L146 ILogger]: Start difference. First operand 110 states. Second operand 2 states. [2019-05-23 11:29:48,853 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:48,854 INFO L146 ILogger]: Finished difference Result 202 states and 245 transitions. [2019-05-23 11:29:48,854 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:48,855 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 39 [2019-05-23 11:29:48,856 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:48,867 INFO L146 ILogger]: With dead ends: 202 [2019-05-23 11:29:48,867 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:29:48,871 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 11:29:48,889 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:29:48,910 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-05-23 11:29:48,912 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:29:48,914 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2019-05-23 11:29:48,916 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 39 [2019-05-23 11:29:48,917 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:48,917 INFO L146 ILogger]: Abstraction has 104 states and 114 transitions. [2019-05-23 11:29:48,917 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:48,917 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 114 transitions. [2019-05-23 11:29:48,919 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:29:48,919 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:48,919 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:48,920 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:48,920 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:48,920 INFO L146 ILogger]: Analyzing trace with hash 217400599, now seen corresponding path program 1 times [2019-05-23 11:29:48,921 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:48,921 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:48,922 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:48,922 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:48,922 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:48,949 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,229 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 11:29:49,230 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:49,230 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:49,232 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:49,232 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:49,233 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:49,233 INFO L146 ILogger]: Start difference. First operand 104 states and 114 transitions. Second operand 5 states. [2019-05-23 11:29:49,622 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:49,622 INFO L146 ILogger]: Finished difference Result 149 states and 168 transitions. [2019-05-23 11:29:49,623 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:49,623 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 39 [2019-05-23 11:29:49,624 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:49,627 INFO L146 ILogger]: With dead ends: 149 [2019-05-23 11:29:49,627 INFO L146 ILogger]: Without dead ends: 143 [2019-05-23 11:29:49,628 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:49,629 INFO L146 ILogger]: Start minimizeSevpa. Operand 143 states. [2019-05-23 11:29:49,640 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 143 to 123. [2019-05-23 11:29:49,640 INFO L146 ILogger]: Start removeUnreachable. Operand 123 states. [2019-05-23 11:29:49,642 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2019-05-23 11:29:49,643 INFO L146 ILogger]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 39 [2019-05-23 11:29:49,643 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:49,643 INFO L146 ILogger]: Abstraction has 123 states and 142 transitions. [2019-05-23 11:29:49,643 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:49,644 INFO L146 ILogger]: Start isEmpty. Operand 123 states and 142 transitions. [2019-05-23 11:29:49,645 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:29:49,646 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:49,646 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:49,646 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:49,647 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:49,647 INFO L146 ILogger]: Analyzing trace with hash 2053163274, now seen corresponding path program 1 times [2019-05-23 11:29:49,647 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:49,647 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:49,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,648 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:49,649 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,666 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,771 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 11:29:49,772 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:49,772 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 11:29:49,792 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:49,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,836 INFO L146 ILogger]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:49,843 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:49,988 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 11:29:50,021 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:50,022 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:50,022 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:50,023 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:50,023 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:50,023 INFO L146 ILogger]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2019-05-23 11:29:51,000 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:51,000 INFO L146 ILogger]: Finished difference Result 275 states and 315 transitions. [2019-05-23 11:29:51,004 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:51,004 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 46 [2019-05-23 11:29:51,004 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:51,006 INFO L146 ILogger]: With dead ends: 275 [2019-05-23 11:29:51,006 INFO L146 ILogger]: Without dead ends: 170 [2019-05-23 11:29:51,010 INFO L146 ILogger]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:51,010 INFO L146 ILogger]: Start minimizeSevpa. Operand 170 states. [2019-05-23 11:29:51,026 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 170 to 122. [2019-05-23 11:29:51,029 INFO L146 ILogger]: Start removeUnreachable. Operand 122 states. [2019-05-23 11:29:51,030 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2019-05-23 11:29:51,030 INFO L146 ILogger]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 46 [2019-05-23 11:29:51,030 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:51,030 INFO L146 ILogger]: Abstraction has 122 states and 132 transitions. [2019-05-23 11:29:51,031 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:51,031 INFO L146 ILogger]: Start isEmpty. Operand 122 states and 132 transitions. [2019-05-23 11:29:51,038 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 122 [2019-05-23 11:29:51,038 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:51,039 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:51,042 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:51,042 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:51,043 INFO L146 ILogger]: Analyzing trace with hash 1785131703, now seen corresponding path program 1 times [2019-05-23 11:29:51,043 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:51,043 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:51,044 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,044 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:51,044 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,099 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,221 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 11:29:51,221 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:51,221 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 11:29:51,230 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:51,296 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,297 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:51,304 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:51,395 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 11:29:51,416 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:51,416 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:51,417 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:51,417 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:51,418 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:51,418 INFO L146 ILogger]: Start difference. First operand 122 states and 132 transitions. Second operand 9 states. [2019-05-23 11:29:52,205 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:52,206 INFO L146 ILogger]: Finished difference Result 278 states and 298 transitions. [2019-05-23 11:29:52,206 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:52,207 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 121 [2019-05-23 11:29:52,207 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:52,209 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:29:52,209 INFO L146 ILogger]: Without dead ends: 175 [2019-05-23 11:29:52,211 INFO L146 ILogger]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:52,211 INFO L146 ILogger]: Start minimizeSevpa. Operand 175 states. [2019-05-23 11:29:52,219 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 175 to 127. [2019-05-23 11:29:52,219 INFO L146 ILogger]: Start removeUnreachable. Operand 127 states. [2019-05-23 11:29:52,220 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2019-05-23 11:29:52,220 INFO L146 ILogger]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 121 [2019-05-23 11:29:52,220 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:52,221 INFO L146 ILogger]: Abstraction has 127 states and 137 transitions. [2019-05-23 11:29:52,221 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:52,221 INFO L146 ILogger]: Start isEmpty. Operand 127 states and 137 transitions. [2019-05-23 11:29:52,223 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:29:52,223 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:52,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:52,224 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:52,224 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:52,224 INFO L146 ILogger]: Analyzing trace with hash 1890499203, now seen corresponding path program 2 times [2019-05-23 11:29:52,224 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:52,225 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:52,225 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,226 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:52,226 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,252 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,352 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:29:52,352 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:52,353 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 11:29:52,364 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:52,427 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:52,427 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,428 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:52,433 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:52,527 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:29:52,546 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:52,547 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:52,547 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:52,547 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:52,548 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:52,548 INFO L146 ILogger]: Start difference. First operand 127 states and 137 transitions. Second operand 9 states. [2019-05-23 11:29:52,946 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:52,946 INFO L146 ILogger]: Finished difference Result 273 states and 292 transitions. [2019-05-23 11:29:52,947 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:52,947 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 126 [2019-05-23 11:29:52,948 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:52,949 INFO L146 ILogger]: With dead ends: 273 [2019-05-23 11:29:52,949 INFO L146 ILogger]: Without dead ends: 179 [2019-05-23 11:29:52,951 INFO L146 ILogger]: 0 DeclaredPredicates, 134 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:52,952 INFO L146 ILogger]: Start minimizeSevpa. Operand 179 states. [2019-05-23 11:29:52,961 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 179 to 134. [2019-05-23 11:29:52,961 INFO L146 ILogger]: Start removeUnreachable. Operand 134 states. [2019-05-23 11:29:52,962 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2019-05-23 11:29:52,962 INFO L146 ILogger]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 126 [2019-05-23 11:29:52,963 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:52,963 INFO L146 ILogger]: Abstraction has 134 states and 144 transitions. [2019-05-23 11:29:52,963 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:52,963 INFO L146 ILogger]: Start isEmpty. Operand 134 states and 144 transitions. [2019-05-23 11:29:52,965 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:29:52,965 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:52,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:52,966 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:52,966 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:52,966 INFO L146 ILogger]: Analyzing trace with hash -1624463301, now seen corresponding path program 3 times [2019-05-23 11:29:52,966 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:52,967 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:52,967 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,967 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:52,968 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,992 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,401 INFO L146 ILogger]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-05-23 11:29:53,401 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:53,401 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 11:29:53,410 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:53,465 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:29:53,465 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,467 INFO L146 ILogger]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:53,472 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:53,646 INFO L146 ILogger]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-05-23 11:29:53,665 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:53,665 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:53,666 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:53,666 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:53,667 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:53,667 INFO L146 ILogger]: Start difference. First operand 134 states and 144 transitions. Second operand 9 states. [2019-05-23 11:29:54,189 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:54,190 INFO L146 ILogger]: Finished difference Result 266 states and 284 transitions. [2019-05-23 11:29:54,190 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:54,190 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 133 [2019-05-23 11:29:54,191 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:54,193 INFO L146 ILogger]: With dead ends: 266 [2019-05-23 11:29:54,193 INFO L146 ILogger]: Without dead ends: 181 [2019-05-23 11:29:54,194 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:54,194 INFO L146 ILogger]: Start minimizeSevpa. Operand 181 states. [2019-05-23 11:29:54,201 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 181 to 141. [2019-05-23 11:29:54,201 INFO L146 ILogger]: Start removeUnreachable. Operand 141 states. [2019-05-23 11:29:54,202 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 141 states to 141 states and 151 transitions. [2019-05-23 11:29:54,202 INFO L146 ILogger]: Start accepts. Automaton has 141 states and 151 transitions. Word has length 133 [2019-05-23 11:29:54,203 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:54,203 INFO L146 ILogger]: Abstraction has 141 states and 151 transitions. [2019-05-23 11:29:54,203 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:54,203 INFO L146 ILogger]: Start isEmpty. Operand 141 states and 151 transitions. [2019-05-23 11:29:54,207 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:29:54,207 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:54,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:54,208 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:54,208 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:54,208 INFO L146 ILogger]: Analyzing trace with hash -1863915076, now seen corresponding path program 4 times [2019-05-23 11:29:54,209 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:54,209 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:54,210 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,210 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:54,210 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,230 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:54,366 INFO L146 ILogger]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:29:54,367 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:54,367 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 11:29:54,378 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:54,423 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:54,423 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:54,424 INFO L146 ILogger]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:54,428 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:54,521 INFO L146 ILogger]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:29:54,542 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:54,542 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:54,543 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:54,543 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:54,543 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:54,543 INFO L146 ILogger]: Start difference. First operand 141 states and 151 transitions. Second operand 9 states. [2019-05-23 11:29:54,978 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:54,978 INFO L146 ILogger]: Finished difference Result 259 states and 276 transitions. [2019-05-23 11:29:54,979 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:54,979 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 140 [2019-05-23 11:29:54,979 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:54,980 INFO L146 ILogger]: With dead ends: 259 [2019-05-23 11:29:54,980 INFO L146 ILogger]: Without dead ends: 183 [2019-05-23 11:29:54,981 INFO L146 ILogger]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:54,982 INFO L146 ILogger]: Start minimizeSevpa. Operand 183 states. [2019-05-23 11:29:54,987 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 183 to 148. [2019-05-23 11:29:54,987 INFO L146 ILogger]: Start removeUnreachable. Operand 148 states. [2019-05-23 11:29:54,987 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2019-05-23 11:29:54,988 INFO L146 ILogger]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 140 [2019-05-23 11:29:54,988 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:54,988 INFO L146 ILogger]: Abstraction has 148 states and 158 transitions. [2019-05-23 11:29:54,988 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:54,988 INFO L146 ILogger]: Start isEmpty. Operand 148 states and 158 transitions. [2019-05-23 11:29:54,990 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 148 [2019-05-23 11:29:54,990 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:54,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:54,991 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:54,991 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:54,991 INFO L146 ILogger]: Analyzing trace with hash -630848830, now seen corresponding path program 5 times [2019-05-23 11:29:54,991 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:54,991 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:54,992 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,992 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:54,992 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,016 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,235 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:29:55,235 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:55,235 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 11:29:55,244 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:55,305 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:29:55,306 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,306 INFO L146 ILogger]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:55,310 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:55,402 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:29:55,422 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:55,422 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:55,424 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:55,424 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:55,425 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:55,425 INFO L146 ILogger]: Start difference. First operand 148 states and 158 transitions. Second operand 9 states. [2019-05-23 11:29:55,869 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:55,870 INFO L146 ILogger]: Finished difference Result 243 states and 259 transitions. [2019-05-23 11:29:55,870 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:29:55,870 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 147 [2019-05-23 11:29:55,871 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:55,873 INFO L146 ILogger]: With dead ends: 243 [2019-05-23 11:29:55,873 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:29:55,874 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:29:55,875 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:29:55,879 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 162. [2019-05-23 11:29:55,879 INFO L146 ILogger]: Start removeUnreachable. Operand 162 states. [2019-05-23 11:29:55,880 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2019-05-23 11:29:55,880 INFO L146 ILogger]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 147 [2019-05-23 11:29:55,880 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:55,880 INFO L146 ILogger]: Abstraction has 162 states and 172 transitions. [2019-05-23 11:29:55,881 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:55,881 INFO L146 ILogger]: Start isEmpty. Operand 162 states and 172 transitions. [2019-05-23 11:29:55,882 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 162 [2019-05-23 11:29:55,882 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:55,883 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:55,883 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:55,883 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:55,883 INFO L146 ILogger]: Analyzing trace with hash 1240637826, now seen corresponding path program 6 times [2019-05-23 11:29:55,884 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:55,884 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:55,885 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,885 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:55,885 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,903 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,013 INFO L146 ILogger]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-05-23 11:29:56,013 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:56,013 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:56,024 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:56,075 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:29:56,075 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,076 INFO L146 ILogger]: Trace formula consists of 259 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:56,079 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:56,178 INFO L146 ILogger]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-05-23 11:29:56,199 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:56,199 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:56,200 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:56,200 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:56,200 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:56,200 INFO L146 ILogger]: Start difference. First operand 162 states and 172 transitions. Second operand 9 states. [2019-05-23 11:29:56,612 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:56,613 INFO L146 ILogger]: Finished difference Result 245 states and 260 transitions. [2019-05-23 11:29:56,613 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:29:56,613 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 161 [2019-05-23 11:29:56,614 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:56,616 INFO L146 ILogger]: With dead ends: 245 [2019-05-23 11:29:56,616 INFO L146 ILogger]: Without dead ends: 196 [2019-05-23 11:29:56,617 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:29:56,617 INFO L146 ILogger]: Start minimizeSevpa. Operand 196 states. [2019-05-23 11:29:56,621 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 196 to 176. [2019-05-23 11:29:56,622 INFO L146 ILogger]: Start removeUnreachable. Operand 176 states. [2019-05-23 11:29:56,622 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions. [2019-05-23 11:29:56,622 INFO L146 ILogger]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 161 [2019-05-23 11:29:56,623 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:56,623 INFO L146 ILogger]: Abstraction has 176 states and 186 transitions. [2019-05-23 11:29:56,623 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:56,623 INFO L146 ILogger]: Start isEmpty. Operand 176 states and 186 transitions. [2019-05-23 11:29:56,625 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 176 [2019-05-23 11:29:56,625 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:56,625 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:56,626 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:56,626 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:56,626 INFO L146 ILogger]: Analyzing trace with hash 424877520, now seen corresponding path program 7 times [2019-05-23 11:29:56,626 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:56,626 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:56,627 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:56,627 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:56,627 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:56,644 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,795 INFO L146 ILogger]: Checked inductivity of 81 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-05-23 11:29:56,795 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:56,795 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:56,806 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:56,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,861 INFO L146 ILogger]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:56,864 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:56,983 INFO L146 ILogger]: Checked inductivity of 81 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-05-23 11:29:57,005 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:57,006 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:57,006 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:57,006 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:57,007 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:57,007 INFO L146 ILogger]: Start difference. First operand 176 states and 186 transitions. Second operand 9 states. [2019-05-23 11:29:57,637 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:57,637 INFO L146 ILogger]: Finished difference Result 240 states and 253 transitions. [2019-05-23 11:29:57,638 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:57,638 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 175 [2019-05-23 11:29:57,639 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:57,640 INFO L146 ILogger]: With dead ends: 240 [2019-05-23 11:29:57,640 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:29:57,641 INFO L146 ILogger]: 0 DeclaredPredicates, 183 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:57,642 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:29:57,646 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 183. [2019-05-23 11:29:57,646 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:29:57,647 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2019-05-23 11:29:57,647 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 175 [2019-05-23 11:29:57,647 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:57,647 INFO L146 ILogger]: Abstraction has 183 states and 193 transitions. [2019-05-23 11:29:57,648 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:57,648 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 193 transitions. [2019-05-23 11:29:57,649 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 183 [2019-05-23 11:29:57,649 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:57,649 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:57,650 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:57,650 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:57,650 INFO L146 ILogger]: Analyzing trace with hash -1378447634, now seen corresponding path program 8 times [2019-05-23 11:29:57,650 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:57,650 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:57,651 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:57,651 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:57,651 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:57,667 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:58,144 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-05-23 11:29:58,145 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:58,145 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:58,166 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:58,248 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:58,248 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:58,249 INFO L146 ILogger]: Trace formula consists of 292 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:58,252 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:58,425 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-05-23 11:29:58,444 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:58,444 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:58,444 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:58,445 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:58,445 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:58,445 INFO L146 ILogger]: Start difference. First operand 183 states and 193 transitions. Second operand 9 states. [2019-05-23 11:29:58,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:58,786 INFO L146 ILogger]: Finished difference Result 233 states and 245 transitions. [2019-05-23 11:29:58,786 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:58,787 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 182 [2019-05-23 11:29:58,787 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:58,788 INFO L146 ILogger]: With dead ends: 233 [2019-05-23 11:29:58,788 INFO L146 ILogger]: Without dead ends: 195 [2019-05-23 11:29:58,789 INFO L146 ILogger]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:58,789 INFO L146 ILogger]: Start minimizeSevpa. Operand 195 states. [2019-05-23 11:29:58,794 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 195 to 190. [2019-05-23 11:29:58,794 INFO L146 ILogger]: Start removeUnreachable. Operand 190 states. [2019-05-23 11:29:58,794 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 190 states to 190 states and 200 transitions. [2019-05-23 11:29:58,795 INFO L146 ILogger]: Start accepts. Automaton has 190 states and 200 transitions. Word has length 182 [2019-05-23 11:29:58,795 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:58,795 INFO L146 ILogger]: Abstraction has 190 states and 200 transitions. [2019-05-23 11:29:58,795 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:58,795 INFO L146 ILogger]: Start isEmpty. Operand 190 states and 200 transitions. [2019-05-23 11:29:58,797 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 190 [2019-05-23 11:29:58,797 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:58,797 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:58,798 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:58,798 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:58,798 INFO L146 ILogger]: Analyzing trace with hash 610566903, now seen corresponding path program 9 times [2019-05-23 11:29:58,798 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:58,798 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:58,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:58,799 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:58,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:58,882 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:00,045 WARN L146 ILogger]: Spent 119.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2019-05-23 11:30:00,316 WARN L146 ILogger]: Spent 161.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2019-05-23 11:30:01,129 WARN L146 ILogger]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2019-05-23 11:30:01,296 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2019-05-23 11:30:03,952 WARN L146 ILogger]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2019-05-23 11:30:04,220 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 24 [2019-05-23 11:30:06,076 WARN L146 ILogger]: Spent 137.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2019-05-23 11:30:06,843 WARN L146 ILogger]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2019-05-23 11:30:09,834 INFO L146 ILogger]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:09,834 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:09,834 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 11:30:09,846 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:09,903 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:30:09,903 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,906 WARN L146 ILogger]: Trace formula consists of 303 conjuncts, 162 conjunts are in the unsatisfiable core [2019-05-23 11:30:09,911 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:18,825 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:30:18,826 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:30:18,872 INFO L146 ILogger]: treesize reduction 3, result has 93.2 percent of original size [2019-05-23 11:30:18,873 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 51 [2019-05-23 11:30:18,874 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:18,907 INFO L146 ILogger]: treesize reduction 22, result has 61.4 percent of original size [2019-05-23 11:30:18,914 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:18,914 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:55, output treesize:29 [2019-05-23 11:30:19,962 INFO L146 ILogger]: Checked inductivity of 97 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:30:19,981 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:19,981 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 69] total 133 [2019-05-23 11:30:19,982 INFO L146 ILogger]: Interpolant automaton has 133 states [2019-05-23 11:30:19,983 INFO L146 ILogger]: Constructing interpolant automaton starting with 133 interpolants. [2019-05-23 11:30:19,990 INFO L146 ILogger]: CoverageRelationStatistics Valid=828, Invalid=16728, Unknown=0, NotChecked=0, Total=17556 [2019-05-23 11:30:19,990 INFO L146 ILogger]: Start difference. First operand 190 states and 200 transitions. Second operand 133 states. [2019-05-23 11:30:27,169 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2019-05-23 11:30:44,736 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:44,737 INFO L146 ILogger]: Finished difference Result 397 states and 416 transitions. [2019-05-23 11:30:44,738 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2019-05-23 11:30:44,738 INFO L146 ILogger]: Start accepts. Automaton has 133 states. Word has length 189 [2019-05-23 11:30:44,739 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:44,742 INFO L146 ILogger]: With dead ends: 397 [2019-05-23 11:30:44,742 INFO L146 ILogger]: Without dead ends: 391 [2019-05-23 11:30:44,753 INFO L146 ILogger]: 0 DeclaredPredicates, 361 GetRequests, 121 SyntacticMatches, 29 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14289 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=2851, Invalid=42305, Unknown=0, NotChecked=0, Total=45156 [2019-05-23 11:30:44,753 INFO L146 ILogger]: Start minimizeSevpa. Operand 391 states. [2019-05-23 11:30:44,763 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 391 to 333. [2019-05-23 11:30:44,763 INFO L146 ILogger]: Start removeUnreachable. Operand 333 states. [2019-05-23 11:30:44,764 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 333 states to 333 states and 352 transitions. [2019-05-23 11:30:44,764 INFO L146 ILogger]: Start accepts. Automaton has 333 states and 352 transitions. Word has length 189 [2019-05-23 11:30:44,765 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:44,765 INFO L146 ILogger]: Abstraction has 333 states and 352 transitions. [2019-05-23 11:30:44,765 INFO L146 ILogger]: Interpolant automaton has 133 states. [2019-05-23 11:30:44,765 INFO L146 ILogger]: Start isEmpty. Operand 333 states and 352 transitions. [2019-05-23 11:30:44,767 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 197 [2019-05-23 11:30:44,767 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:44,767 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:44,767 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:44,768 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:44,768 INFO L146 ILogger]: Analyzing trace with hash -1813765654, now seen corresponding path program 10 times [2019-05-23 11:30:44,768 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:44,768 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:44,769 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:44,769 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:44,769 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:44,788 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:44,938 INFO L146 ILogger]: Checked inductivity of 112 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:44,939 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:44,939 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 11:30:44,948 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:45,000 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:45,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:45,001 INFO L146 ILogger]: Trace formula consists of 312 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:45,004 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:45,311 INFO L146 ILogger]: Checked inductivity of 112 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:45,333 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:45,333 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:45,333 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:45,334 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:45,334 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:45,334 INFO L146 ILogger]: Start difference. First operand 333 states and 352 transitions. Second operand 20 states. [2019-05-23 11:30:46,532 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:46,532 INFO L146 ILogger]: Finished difference Result 771 states and 815 transitions. [2019-05-23 11:30:46,532 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:46,533 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 196 [2019-05-23 11:30:46,533 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:46,537 INFO L146 ILogger]: With dead ends: 771 [2019-05-23 11:30:46,537 INFO L146 ILogger]: Without dead ends: 662 [2019-05-23 11:30:46,538 INFO L146 ILogger]: 0 DeclaredPredicates, 220 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:46,539 INFO L146 ILogger]: Start minimizeSevpa. Operand 662 states. [2019-05-23 11:30:46,554 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 662 to 457. [2019-05-23 11:30:46,554 INFO L146 ILogger]: Start removeUnreachable. Operand 457 states. [2019-05-23 11:30:46,555 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 457 states to 457 states and 483 transitions. [2019-05-23 11:30:46,556 INFO L146 ILogger]: Start accepts. Automaton has 457 states and 483 transitions. Word has length 196 [2019-05-23 11:30:46,556 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:46,556 INFO L146 ILogger]: Abstraction has 457 states and 483 transitions. [2019-05-23 11:30:46,556 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:46,556 INFO L146 ILogger]: Start isEmpty. Operand 457 states and 483 transitions. [2019-05-23 11:30:46,558 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 197 [2019-05-23 11:30:46,558 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:46,558 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:46,558 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:46,559 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:46,559 INFO L146 ILogger]: Analyzing trace with hash 158347271, now seen corresponding path program 11 times [2019-05-23 11:30:46,559 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:46,559 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:46,560 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,560 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:46,560 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,577 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:46,873 INFO L146 ILogger]: Checked inductivity of 112 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:46,874 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:46,874 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 11:30:46,883 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:47,271 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:47,272 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:47,273 INFO L146 ILogger]: Trace formula consists of 314 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:47,275 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:47,412 INFO L146 ILogger]: Checked inductivity of 112 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-05-23 11:30:47,432 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:47,432 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:47,432 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:47,433 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:47,433 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:47,433 INFO L146 ILogger]: Start difference. First operand 457 states and 483 transitions. Second operand 21 states. [2019-05-23 11:30:49,084 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:49,085 INFO L146 ILogger]: Finished difference Result 625 states and 659 transitions. [2019-05-23 11:30:49,085 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:30:49,085 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 196 [2019-05-23 11:30:49,086 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:49,089 INFO L146 ILogger]: With dead ends: 625 [2019-05-23 11:30:49,089 INFO L146 ILogger]: Without dead ends: 596 [2019-05-23 11:30:49,090 INFO L146 ILogger]: 0 DeclaredPredicates, 232 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:30:49,091 INFO L146 ILogger]: Start minimizeSevpa. Operand 596 states. [2019-05-23 11:30:49,104 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 596 to 560. [2019-05-23 11:30:49,105 INFO L146 ILogger]: Start removeUnreachable. Operand 560 states. [2019-05-23 11:30:49,106 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 560 states to 560 states and 591 transitions. [2019-05-23 11:30:49,106 INFO L146 ILogger]: Start accepts. Automaton has 560 states and 591 transitions. Word has length 196 [2019-05-23 11:30:49,107 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:49,107 INFO L146 ILogger]: Abstraction has 560 states and 591 transitions. [2019-05-23 11:30:49,107 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:49,107 INFO L146 ILogger]: Start isEmpty. Operand 560 states and 591 transitions. [2019-05-23 11:30:49,109 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 197 [2019-05-23 11:30:49,109 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:49,109 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:49,109 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:49,109 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:49,110 INFO L146 ILogger]: Analyzing trace with hash -364556480, now seen corresponding path program 12 times [2019-05-23 11:30:49,110 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:49,110 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:49,111 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:49,111 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:49,111 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:49,127 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:49,295 INFO L146 ILogger]: Checked inductivity of 112 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-05-23 11:30:49,295 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:49,295 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 11:30:49,305 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:49,354 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:49,355 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:49,356 INFO L146 ILogger]: Trace formula consists of 314 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:49,358 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:49,483 INFO L146 ILogger]: Checked inductivity of 112 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-05-23 11:30:49,502 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:49,502 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:49,503 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:49,503 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:49,503 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:49,503 INFO L146 ILogger]: Start difference. First operand 560 states and 591 transitions. Second operand 21 states. [2019-05-23 11:30:50,601 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:50,601 INFO L146 ILogger]: Finished difference Result 676 states and 711 transitions. [2019-05-23 11:30:50,601 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:30:50,602 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 196 [2019-05-23 11:30:50,602 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:50,608 INFO L146 ILogger]: With dead ends: 676 [2019-05-23 11:30:50,608 INFO L146 ILogger]: Without dead ends: 631 [2019-05-23 11:30:50,609 INFO L146 ILogger]: 0 DeclaredPredicates, 230 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=1443, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:30:50,609 INFO L146 ILogger]: Start minimizeSevpa. Operand 631 states. [2019-05-23 11:30:50,630 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 631 to 574. [2019-05-23 11:30:50,630 INFO L146 ILogger]: Start removeUnreachable. Operand 574 states. [2019-05-23 11:30:50,632 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 574 states to 574 states and 607 transitions. [2019-05-23 11:30:50,632 INFO L146 ILogger]: Start accepts. Automaton has 574 states and 607 transitions. Word has length 196 [2019-05-23 11:30:50,632 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:50,633 INFO L146 ILogger]: Abstraction has 574 states and 607 transitions. [2019-05-23 11:30:50,633 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:50,633 INFO L146 ILogger]: Start isEmpty. Operand 574 states and 607 transitions. [2019-05-23 11:30:50,634 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 197 [2019-05-23 11:30:50,634 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:50,635 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:50,635 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:50,635 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:50,635 INFO L146 ILogger]: Analyzing trace with hash -353983794, now seen corresponding path program 13 times [2019-05-23 11:30:50,636 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:50,636 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:50,636 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:50,636 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:50,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:50,654 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:50,940 INFO L146 ILogger]: Checked inductivity of 112 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:50,941 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:50,941 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:50,964 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:51,009 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:51,010 INFO L146 ILogger]: Trace formula consists of 314 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:51,013 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:51,148 INFO L146 ILogger]: Checked inductivity of 112 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:51,167 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:51,167 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:51,167 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:51,167 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:51,168 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:51,168 INFO L146 ILogger]: Start difference. First operand 574 states and 607 transitions. Second operand 20 states. [2019-05-23 11:30:51,965 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:51,965 INFO L146 ILogger]: Finished difference Result 794 states and 833 transitions. [2019-05-23 11:30:51,966 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:51,966 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 196 [2019-05-23 11:30:51,967 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:51,971 INFO L146 ILogger]: With dead ends: 794 [2019-05-23 11:30:51,971 INFO L146 ILogger]: Without dead ends: 733 [2019-05-23 11:30:51,971 INFO L146 ILogger]: 0 DeclaredPredicates, 220 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:51,972 INFO L146 ILogger]: Start minimizeSevpa. Operand 733 states. [2019-05-23 11:30:51,989 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 733 to 678. [2019-05-23 11:30:51,990 INFO L146 ILogger]: Start removeUnreachable. Operand 678 states. [2019-05-23 11:30:51,991 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 678 states to 678 states and 716 transitions. [2019-05-23 11:30:51,991 INFO L146 ILogger]: Start accepts. Automaton has 678 states and 716 transitions. Word has length 196 [2019-05-23 11:30:51,992 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:51,992 INFO L146 ILogger]: Abstraction has 678 states and 716 transitions. [2019-05-23 11:30:51,992 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:51,992 INFO L146 ILogger]: Start isEmpty. Operand 678 states and 716 transitions. [2019-05-23 11:30:51,994 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 197 [2019-05-23 11:30:51,994 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:51,994 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:51,995 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:51,995 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:51,995 INFO L146 ILogger]: Analyzing trace with hash 2034542485, now seen corresponding path program 14 times [2019-05-23 11:30:51,995 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:51,995 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:51,996 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:51,996 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:51,996 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:52,011 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:52,571 INFO L146 ILogger]: Checked inductivity of 112 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:52,572 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:52,572 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:52,580 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:52,628 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:52,628 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:52,629 INFO L146 ILogger]: Trace formula consists of 314 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:52,631 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:52,771 INFO L146 ILogger]: Checked inductivity of 112 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:52,799 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:52,800 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:52,800 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:52,801 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:52,801 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:52,801 INFO L146 ILogger]: Start difference. First operand 678 states and 716 transitions. Second operand 20 states.