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-tiling/rew_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:25,407 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:25,409 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:25,421 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:25,422 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:25,423 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:25,424 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:25,427 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:25,429 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:25,436 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:25,437 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:25,437 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:25,440 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:25,441 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:25,444 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:25,445 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:25,446 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:25,452 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:25,454 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:25,457 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:25,458 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:25,459 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:25,461 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:26:25,461 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:26:25,462 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:26:25,462 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:26:25,465 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:26:25,466 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:26:25,467 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:26:25,467 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:26:25,468 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:26:25,469 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:26:25,472 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:26:25,472 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:25,473 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:25,473 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:25,473 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:25,475 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:25,475 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:25,476 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:25,500 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:25,500 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:25,502 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:25,502 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:25,502 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:25,502 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:25,502 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:25,503 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:25,503 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:25,503 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:25,503 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:25,503 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:25,504 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:25,504 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:25,504 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:25,504 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:25,504 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:25,505 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:25,505 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:25,505 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:25,505 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:25,505 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:25,506 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:25,506 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:25,506 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:25,506 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:25,506 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:25,507 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:25,507 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 11:26:25,538 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:25,552 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:25,556 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:25,557 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:25,558 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:25,558 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/rew_true-unreach-call.i [2019-05-23 11:26:25,621 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb899bab1/5df89c6350a44c91b5fe7f1087e4e51a/FLAG2b3e8ae50 [2019-05-23 11:26:26,072 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:26,073 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/rew_true-unreach-call.i [2019-05-23 11:26:26,079 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb899bab1/5df89c6350a44c91b5fe7f1087e4e51a/FLAG2b3e8ae50 [2019-05-23 11:26:26,446 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb899bab1/5df89c6350a44c91b5fe7f1087e4e51a [2019-05-23 11:26:26,456 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:26,458 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:26,459 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:26,459 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:26,462 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:26,463 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,466 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a88b956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26, skipping insertion in model container [2019-05-23 11:26:26,466 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,474 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:26,495 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:26,682 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:26,689 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:26,717 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:26,734 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:26,734 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26 WrapperNode [2019-05-23 11:26:26,735 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:26,735 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:26,735 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:26,736 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:26,742 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,750 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,768 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:26,768 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:26,769 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:26,769 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:26,776 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,776 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,778 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,778 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,783 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,871 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,872 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,874 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:26,875 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:26,875 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:26,875 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:26,876 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (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 11:26:26,928 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:26,928 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:26,928 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:26,928 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:26,928 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:26,929 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:27,316 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:27,317 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:26:27,318 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:27 BoogieIcfgContainer [2019-05-23 11:26:27,318 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:27,318 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:27,318 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:27,321 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:27,322 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:26" (1/3) ... [2019-05-23 11:26:27,322 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e1fe59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:27, skipping insertion in model container [2019-05-23 11:26:27,323 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (2/3) ... [2019-05-23 11:26:27,323 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e1fe59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:27, skipping insertion in model container [2019-05-23 11:26:27,323 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:27" (3/3) ... [2019-05-23 11:26:27,325 INFO L146 ILogger]: Analyzing ICFG rew_true-unreach-call.i [2019-05-23 11:26:27,334 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:27,343 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:27,359 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:27,389 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:27,390 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:27,390 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:27,390 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:27,391 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:27,391 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:27,391 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:27,391 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:27,391 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:27,406 INFO L146 ILogger]: Start isEmpty. Operand 41 states. [2019-05-23 11:26:27,413 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:26:27,413 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:27,414 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] [2019-05-23 11:26:27,416 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:27,421 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:27,422 INFO L146 ILogger]: Analyzing trace with hash 1654400395, now seen corresponding path program 1 times [2019-05-23 11:26:27,424 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:27,424 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:27,461 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,461 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:27,461 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,496 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:27,537 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 11:26:27,539 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:27,540 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:26:27,543 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:26:27,555 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:26:27,556 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:26:27,558 INFO L146 ILogger]: Start difference. First operand 41 states. Second operand 2 states. [2019-05-23 11:26:27,575 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:27,576 INFO L146 ILogger]: Finished difference Result 60 states and 68 transitions. [2019-05-23 11:26:27,576 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:26:27,577 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 24 [2019-05-23 11:26:27,578 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:27,586 INFO L146 ILogger]: With dead ends: 60 [2019-05-23 11:26:27,587 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:26:27,590 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 11:26:27,607 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:26:27,622 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:26:27,624 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:26:27,625 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:26:27,627 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 24 [2019-05-23 11:26:27,627 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:27,627 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:26:27,627 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:26:27,628 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:26:27,629 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:26:27,629 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:27,629 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] [2019-05-23 11:26:27,629 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:27,630 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:27,630 INFO L146 ILogger]: Analyzing trace with hash 508900731, now seen corresponding path program 1 times [2019-05-23 11:26:27,630 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:27,630 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:27,631 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,632 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:27,632 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,655 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:27,865 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 11:26:27,866 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:27,866 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:27,868 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:27,868 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:27,869 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:27,869 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2019-05-23 11:26:28,174 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:28,175 INFO L146 ILogger]: Finished difference Result 72 states and 78 transitions. [2019-05-23 11:26:28,175 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:28,175 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 24 [2019-05-23 11:26:28,176 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:28,177 INFO L146 ILogger]: With dead ends: 72 [2019-05-23 11:26:28,177 INFO L146 ILogger]: Without dead ends: 52 [2019-05-23 11:26:28,178 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:28,179 INFO L146 ILogger]: Start minimizeSevpa. Operand 52 states. [2019-05-23 11:26:28,183 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 52 to 37. [2019-05-23 11:26:28,184 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:26:28,185 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:26:28,185 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 24 [2019-05-23 11:26:28,185 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:28,185 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:26:28,186 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:28,186 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:26:28,187 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:26:28,187 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:28,187 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] [2019-05-23 11:26:28,187 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:28,187 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:28,188 INFO L146 ILogger]: Analyzing trace with hash -1375352274, now seen corresponding path program 1 times [2019-05-23 11:26:28,188 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:28,188 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:28,189 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,189 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:28,189 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,205 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:28,483 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 11:26:28,483 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:28,483 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 11:26:28,505 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:28,545 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:28,546 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:26:28,553 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:28,678 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 11:26:28,701 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:28,702 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:26:28,702 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:26:28,702 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:26:28,703 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:26:28,703 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 9 states. [2019-05-23 11:26:29,097 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:29,098 INFO L146 ILogger]: Finished difference Result 72 states and 76 transitions. [2019-05-23 11:26:29,100 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:26:29,100 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 31 [2019-05-23 11:26:29,101 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:29,102 INFO L146 ILogger]: With dead ends: 72 [2019-05-23 11:26:29,102 INFO L146 ILogger]: Without dead ends: 59 [2019-05-23 11:26:29,103 INFO L146 ILogger]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:26:29,104 INFO L146 ILogger]: Start minimizeSevpa. Operand 59 states. [2019-05-23 11:26:29,109 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 59 to 43. [2019-05-23 11:26:29,109 INFO L146 ILogger]: Start removeUnreachable. Operand 43 states. [2019-05-23 11:26:29,110 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2019-05-23 11:26:29,110 INFO L146 ILogger]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 31 [2019-05-23 11:26:29,111 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:29,111 INFO L146 ILogger]: Abstraction has 43 states and 45 transitions. [2019-05-23 11:26:29,111 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:26:29,111 INFO L146 ILogger]: Start isEmpty. Operand 43 states and 45 transitions. [2019-05-23 11:26:29,112 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:26:29,112 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:29,113 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:29,113 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:29,113 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:29,113 INFO L146 ILogger]: Analyzing trace with hash 68118469, now seen corresponding path program 1 times [2019-05-23 11:26:29,113 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:29,114 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:29,114 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:29,114 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:29,115 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:29,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:29,731 WARN L146 ILogger]: Spent 274.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2019-05-23 11:26:30,083 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:30,083 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:30,083 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 11:26:30,102 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:30,124 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:30,125 INFO L146 ILogger]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:26:30,129 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:30,294 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:26:30,295 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,335 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:30,335 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,335 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2019-05-23 11:26:30,480 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:30,481 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2019-05-23 11:26:30,482 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,495 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:30,497 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:30,498 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:32 [2019-05-23 11:26:31,549 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:31,551 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:31,552 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2019-05-23 11:26:31,552 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,562 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:31,563 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,563 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:7 [2019-05-23 11:26:31,649 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:31,667 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:31,668 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2019-05-23 11:26:31,670 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:26:31,670 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:26:31,671 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=444, Unknown=3, NotChecked=0, Total=552 [2019-05-23 11:26:31,671 INFO L146 ILogger]: Start difference. First operand 43 states and 45 transitions. Second operand 24 states. [2019-05-23 11:26:34,954 WARN L146 ILogger]: Spent 497.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2019-05-23 11:26:35,328 WARN L146 ILogger]: Spent 323.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-05-23 11:26:36,158 WARN L146 ILogger]: Spent 545.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2019-05-23 11:26:36,322 WARN L146 ILogger]: Spent 136.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2019-05-23 11:26:36,681 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:36,682 INFO L146 ILogger]: Finished difference Result 69 states and 72 transitions. [2019-05-23 11:26:36,682 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:26:36,682 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 37 [2019-05-23 11:26:36,683 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:36,683 INFO L146 ILogger]: With dead ends: 69 [2019-05-23 11:26:36,684 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:26:36,685 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=348, Invalid=1127, Unknown=7, NotChecked=0, Total=1482 [2019-05-23 11:26:36,685 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:26:36,691 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 49. [2019-05-23 11:26:36,691 INFO L146 ILogger]: Start removeUnreachable. Operand 49 states. [2019-05-23 11:26:36,692 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2019-05-23 11:26:36,693 INFO L146 ILogger]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 37 [2019-05-23 11:26:36,693 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:36,693 INFO L146 ILogger]: Abstraction has 49 states and 51 transitions. [2019-05-23 11:26:36,693 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:26:36,693 INFO L146 ILogger]: Start isEmpty. Operand 49 states and 51 transitions. [2019-05-23 11:26:36,694 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:26:36,694 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:36,695 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:36,695 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:36,695 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:36,695 INFO L146 ILogger]: Analyzing trace with hash 212584984, now seen corresponding path program 1 times [2019-05-23 11:26:36,696 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:36,696 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:36,697 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:36,697 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:36,697 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:36,717 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,968 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:36,968 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:36,969 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 11:26:36,985 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:37,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:37,001 INFO L146 ILogger]: Trace formula consists of 80 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:26:37,004 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:37,166 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:26:37,167 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,174 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:37,175 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,175 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-05-23 11:26:37,456 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:37,457 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,460 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:37,460 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,460 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:37,583 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:37,602 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:37,602 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 30 [2019-05-23 11:26:37,603 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:26:37,603 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:26:37,603 INFO L146 ILogger]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:26:37,604 INFO L146 ILogger]: Start difference. First operand 49 states and 51 transitions. Second operand 30 states. [2019-05-23 11:26:38,604 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:38,604 INFO L146 ILogger]: Finished difference Result 103 states and 108 transitions. [2019-05-23 11:26:38,604 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:26:38,605 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 47 [2019-05-23 11:26:38,605 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:38,607 INFO L146 ILogger]: With dead ends: 103 [2019-05-23 11:26:38,607 INFO L146 ILogger]: Without dead ends: 101 [2019-05-23 11:26:38,609 INFO L146 ILogger]: 0 DeclaredPredicates, 84 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=517, Invalid=2239, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:26:38,609 INFO L146 ILogger]: Start minimizeSevpa. Operand 101 states. [2019-05-23 11:26:38,616 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 101 to 68. [2019-05-23 11:26:38,617 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:26:38,618 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2019-05-23 11:26:38,618 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 47 [2019-05-23 11:26:38,618 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:38,618 INFO L146 ILogger]: Abstraction has 68 states and 73 transitions. [2019-05-23 11:26:38,618 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:26:38,619 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 73 transitions. [2019-05-23 11:26:38,619 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:26:38,620 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:38,620 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:38,620 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:38,620 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:38,621 INFO L146 ILogger]: Analyzing trace with hash 792225847, now seen corresponding path program 2 times [2019-05-23 11:26:38,621 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:38,621 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:38,622 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:38,622 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:38,622 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:38,634 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:38,688 INFO L146 ILogger]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-05-23 11:26:38,688 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:38,688 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:26:38,689 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:26:38,689 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:26:38,689 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:38,690 INFO L146 ILogger]: Start difference. First operand 68 states and 73 transitions. Second operand 5 states. [2019-05-23 11:26:38,785 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:38,785 INFO L146 ILogger]: Finished difference Result 108 states and 115 transitions. [2019-05-23 11:26:38,786 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:26:38,786 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 54 [2019-05-23 11:26:38,786 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:38,787 INFO L146 ILogger]: With dead ends: 108 [2019-05-23 11:26:38,787 INFO L146 ILogger]: Without dead ends: 78 [2019-05-23 11:26:38,788 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:26:38,788 INFO L146 ILogger]: Start minimizeSevpa. Operand 78 states. [2019-05-23 11:26:38,802 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-05-23 11:26:38,802 INFO L146 ILogger]: Start removeUnreachable. Operand 78 states. [2019-05-23 11:26:38,803 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2019-05-23 11:26:38,803 INFO L146 ILogger]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 54 [2019-05-23 11:26:38,805 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:38,805 INFO L146 ILogger]: Abstraction has 78 states and 83 transitions. [2019-05-23 11:26:38,805 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:26:38,805 INFO L146 ILogger]: Start isEmpty. Operand 78 states and 83 transitions. [2019-05-23 11:26:38,809 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:26:38,809 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:38,809 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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] [2019-05-23 11:26:38,810 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:38,811 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:38,811 INFO L146 ILogger]: Analyzing trace with hash -723803989, now seen corresponding path program 3 times [2019-05-23 11:26:38,811 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:38,811 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:38,812 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:38,812 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:38,812 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:38,840 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:39,022 INFO L146 ILogger]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:39,022 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:39,023 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 11:26:39,031 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:39,054 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:26:39,054 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:39,055 INFO L146 ILogger]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:26:39,057 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:39,326 INFO L146 ILogger]: Checked inductivity of 30 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:39,346 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:39,346 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 20 [2019-05-23 11:26:39,346 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:26:39,347 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:26:39,347 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:26:39,347 INFO L146 ILogger]: Start difference. First operand 78 states and 83 transitions. Second operand 20 states. [2019-05-23 11:26:39,944 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:39,944 INFO L146 ILogger]: Finished difference Result 166 states and 176 transitions. [2019-05-23 11:26:39,946 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:26:39,947 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 57 [2019-05-23 11:26:39,947 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:39,948 INFO L146 ILogger]: With dead ends: 166 [2019-05-23 11:26:39,955 INFO L146 ILogger]: Without dead ends: 132 [2019-05-23 11:26:39,956 INFO L146 ILogger]: 0 DeclaredPredicates, 88 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:26:39,958 INFO L146 ILogger]: Start minimizeSevpa. Operand 132 states. [2019-05-23 11:26:39,980 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 132 to 113. [2019-05-23 11:26:39,980 INFO L146 ILogger]: Start removeUnreachable. Operand 113 states. [2019-05-23 11:26:39,981 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2019-05-23 11:26:39,981 INFO L146 ILogger]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 57 [2019-05-23 11:26:39,982 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:39,982 INFO L146 ILogger]: Abstraction has 113 states and 121 transitions. [2019-05-23 11:26:39,982 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:26:39,982 INFO L146 ILogger]: Start isEmpty. Operand 113 states and 121 transitions. [2019-05-23 11:26:39,983 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 61 [2019-05-23 11:26:39,984 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:39,984 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 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] [2019-05-23 11:26:39,984 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:39,984 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:39,984 INFO L146 ILogger]: Analyzing trace with hash 2081203342, now seen corresponding path program 4 times [2019-05-23 11:26:39,985 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:39,985 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:39,985 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:39,986 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:39,986 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:39,997 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:40,043 INFO L146 ILogger]: Checked inductivity of 47 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:26:40,043 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:40,044 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:26:40,044 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:26:40,044 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:26:40,044 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:40,044 INFO L146 ILogger]: Start difference. First operand 113 states and 121 transitions. Second operand 5 states. [2019-05-23 11:26:40,109 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:40,109 INFO L146 ILogger]: Finished difference Result 166 states and 178 transitions. [2019-05-23 11:26:40,109 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:26:40,109 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 60 [2019-05-23 11:26:40,110 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:40,110 INFO L146 ILogger]: With dead ends: 166 [2019-05-23 11:26:40,110 INFO L146 ILogger]: Without dead ends: 78 [2019-05-23 11:26:40,111 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:26:40,111 INFO L146 ILogger]: Start minimizeSevpa. Operand 78 states. [2019-05-23 11:26:40,117 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-05-23 11:26:40,118 INFO L146 ILogger]: Start removeUnreachable. Operand 78 states. [2019-05-23 11:26:40,118 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2019-05-23 11:26:40,119 INFO L146 ILogger]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 60 [2019-05-23 11:26:40,120 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:40,120 INFO L146 ILogger]: Abstraction has 78 states and 80 transitions. [2019-05-23 11:26:40,120 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:26:40,120 INFO L146 ILogger]: Start isEmpty. Operand 78 states and 80 transitions. [2019-05-23 11:26:40,122 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 62 [2019-05-23 11:26:40,122 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:40,123 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:40,123 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:40,123 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:40,123 INFO L146 ILogger]: Analyzing trace with hash 551892344, now seen corresponding path program 5 times [2019-05-23 11:26:40,123 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:40,124 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:40,124 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:40,125 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:40,125 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:40,141 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:40,866 INFO L146 ILogger]: Checked inductivity of 49 backedges. 1 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:40,866 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:40,867 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 11:26:40,877 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:26:40,950 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:26:40,950 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:40,951 INFO L146 ILogger]: Trace formula consists of 98 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:26:40,954 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:41,143 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:26:41,143 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,155 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,156 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,156 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2019-05-23 11:26:41,311 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,312 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:26:41,313 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,323 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,324 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,324 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:26:41,333 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,335 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-05-23 11:26:41,337 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,355 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,355 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,356 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-05-23 11:26:41,500 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,501 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,502 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,503 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,503 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 39 [2019-05-23 11:26:41,504 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,516 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,517 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:41,518 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:58 [2019-05-23 11:26:42,833 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:42,834 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:42,835 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:42,837 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:42,837 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 13 [2019-05-23 11:26:42,838 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:42,842 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:42,843 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:42,843 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:53, output treesize:7 [2019-05-23 11:26:42,935 INFO L146 ILogger]: Checked inductivity of 49 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:42,954 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:42,955 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 40 [2019-05-23 11:26:42,955 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:26:42,955 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:26:42,956 INFO L146 ILogger]: CoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:26:42,956 INFO L146 ILogger]: Start difference. First operand 78 states and 80 transitions. Second operand 40 states. [2019-05-23 11:27:15,301 WARN L146 ILogger]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-05-23 11:27:28,889 WARN L146 ILogger]: Spent 13.37 s on a formula simplification. DAG size of input: 63 DAG size of output: 46