java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_palindrome_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:19:08,437 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:19:08,439 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:19:08,458 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:19:08,459 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:19:08,462 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:19:08,463 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:19:08,466 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:19:08,469 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:19:08,476 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:19:08,477 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:19:08,477 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:19:08,478 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:19:08,480 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:19:08,481 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:19:08,482 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:19:08,482 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:19:08,484 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:19:08,486 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:19:08,487 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:19:08,488 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:19:08,489 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:19:08,492 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:19:08,492 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:19:08,492 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:19:08,493 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:19:08,493 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:19:08,494 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:19:08,495 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:19:08,495 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:19:08,496 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:19:08,497 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:19:08,498 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:19:08,498 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:19:08,499 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:19:08,499 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:19:08,499 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:19:08,500 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:19:08,501 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:19:08,501 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:19:08,517 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:19:08,517 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:19:08,518 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:19:08,518 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:19:08,519 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:19:08,519 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:19:08,519 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:19:08,519 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:19:08,519 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:19:08,520 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:19:08,520 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:19:08,520 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:19:08,520 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:19:08,520 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:19:08,521 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:19:08,521 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:19:08,521 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:19:08,521 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:19:08,521 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:19:08,522 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:19:08,522 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:19:08,522 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:19:08,522 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:19:08,522 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:19:08,523 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:19:08,523 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:19:08,523 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:19:08,523 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:19:08,523 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 11:19:08,573 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:19:08,596 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:19:08,600 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:19:08,602 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:19:08,602 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:19:08,603 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_palindrome_true-unreach-call_ground.i [2019-05-23 11:19:08,675 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e1b826d/fbd32d4116804071901957dd8d9be8e4/FLAG21276fb76 [2019-05-23 11:19:09,129 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:19:09,131 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_palindrome_true-unreach-call_ground.i [2019-05-23 11:19:09,139 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e1b826d/fbd32d4116804071901957dd8d9be8e4/FLAG21276fb76 [2019-05-23 11:19:09,489 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e1b826d/fbd32d4116804071901957dd8d9be8e4 [2019-05-23 11:19:09,498 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:19:09,499 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:19:09,501 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:09,501 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:19:09,504 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:19:09,506 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,508 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a7ab92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09, skipping insertion in model container [2019-05-23 11:19:09,509 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,516 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:19:09,535 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:19:09,715 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:09,724 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:19:09,757 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:09,788 INFO L146 ILogger]: Completed translation [2019-05-23 11:19:09,789 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09 WrapperNode [2019-05-23 11:19:09,789 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:09,790 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:09,790 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:19:09,790 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:19:09,802 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,822 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,854 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:09,855 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:19:09,855 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:19:09,855 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:19:09,868 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,868 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,871 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,871 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,881 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,887 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,892 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (1/1) ... [2019-05-23 11:19:09,900 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:19:09,901 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:19:09,901 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:19:09,901 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:19:09,902 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (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 11:19:10,060 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:19:10,061 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:19:10,061 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:19:10,061 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:19:10,061 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:19:10,061 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:19:10,551 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:19:10,551 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:19:10,553 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:10 BoogieIcfgContainer [2019-05-23 11:19:10,553 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:19:10,554 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:19:10,554 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:19:10,558 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:19:10,558 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:19:09" (1/3) ... [2019-05-23 11:19:10,559 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141dfabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:10, skipping insertion in model container [2019-05-23 11:19:10,559 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:09" (2/3) ... [2019-05-23 11:19:10,559 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141dfabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:10, skipping insertion in model container [2019-05-23 11:19:10,560 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:10" (3/3) ... [2019-05-23 11:19:10,561 INFO L146 ILogger]: Analyzing ICFG standard_palindrome_true-unreach-call_ground.i [2019-05-23 11:19:10,571 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:19:10,577 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:19:10,593 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:19:10,622 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:19:10,623 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:19:10,623 INFO L146 ILogger]: Hoare is true [2019-05-23 11:19:10,623 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:19:10,624 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:19:10,624 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:19:10,624 INFO L146 ILogger]: Difference is false [2019-05-23 11:19:10,624 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:19:10,625 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:19:10,639 INFO L146 ILogger]: Start isEmpty. Operand 36 states. [2019-05-23 11:19:10,646 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 19 [2019-05-23 11:19:10,646 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:10,647 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:10,649 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:10,654 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:10,654 INFO L146 ILogger]: Analyzing trace with hash -1370575557, now seen corresponding path program 1 times [2019-05-23 11:19:10,656 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:10,656 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:10,699 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:10,700 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:10,700 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:10,736 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:10,771 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 11:19:10,774 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:10,775 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:19:10,779 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:19:10,790 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:19:10,791 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:19:10,793 INFO L146 ILogger]: Start difference. First operand 36 states. Second operand 2 states. [2019-05-23 11:19:10,810 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:10,811 INFO L146 ILogger]: Finished difference Result 58 states and 64 transitions. [2019-05-23 11:19:10,811 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:19:10,812 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 18 [2019-05-23 11:19:10,813 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:10,822 INFO L146 ILogger]: With dead ends: 58 [2019-05-23 11:19:10,823 INFO L146 ILogger]: Without dead ends: 30 [2019-05-23 11:19:10,826 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 11:19:10,841 INFO L146 ILogger]: Start minimizeSevpa. Operand 30 states. [2019-05-23 11:19:10,853 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-05-23 11:19:10,855 INFO L146 ILogger]: Start removeUnreachable. Operand 30 states. [2019-05-23 11:19:10,856 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-05-23 11:19:10,857 INFO L146 ILogger]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 18 [2019-05-23 11:19:10,858 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:10,858 INFO L146 ILogger]: Abstraction has 30 states and 31 transitions. [2019-05-23 11:19:10,858 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:19:10,858 INFO L146 ILogger]: Start isEmpty. Operand 30 states and 31 transitions. [2019-05-23 11:19:10,859 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 19 [2019-05-23 11:19:10,859 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:10,859 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:10,860 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:10,860 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:10,860 INFO L146 ILogger]: Analyzing trace with hash 1216020208, now seen corresponding path program 1 times [2019-05-23 11:19:10,860 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:10,861 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:10,862 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:10,862 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:10,862 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:10,883 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:10,946 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 11:19:10,946 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:10,947 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:19:10,948 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:19:10,949 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:19:10,949 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:10,949 INFO L146 ILogger]: Start difference. First operand 30 states and 31 transitions. Second operand 3 states. [2019-05-23 11:19:10,998 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:10,998 INFO L146 ILogger]: Finished difference Result 52 states and 54 transitions. [2019-05-23 11:19:10,998 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:19:10,999 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 18 [2019-05-23 11:19:10,999 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:11,000 INFO L146 ILogger]: With dead ends: 52 [2019-05-23 11:19:11,000 INFO L146 ILogger]: Without dead ends: 36 [2019-05-23 11:19:11,001 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:11,001 INFO L146 ILogger]: Start minimizeSevpa. Operand 36 states. [2019-05-23 11:19:11,005 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 36 to 31. [2019-05-23 11:19:11,006 INFO L146 ILogger]: Start removeUnreachable. Operand 31 states. [2019-05-23 11:19:11,006 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-05-23 11:19:11,007 INFO L146 ILogger]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 18 [2019-05-23 11:19:11,007 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:11,007 INFO L146 ILogger]: Abstraction has 31 states and 32 transitions. [2019-05-23 11:19:11,007 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:19:11,007 INFO L146 ILogger]: Start isEmpty. Operand 31 states and 32 transitions. [2019-05-23 11:19:11,008 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:19:11,008 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:11,009 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] [2019-05-23 11:19:11,009 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:11,009 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:11,009 INFO L146 ILogger]: Analyzing trace with hash -447297149, now seen corresponding path program 1 times [2019-05-23 11:19:11,009 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:11,010 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:11,011 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:11,011 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:11,011 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:11,027 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:11,186 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 11:19:11,186 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:11,187 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 11:19:11,204 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:11,233 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:11,235 INFO L146 ILogger]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:19:11,240 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:11,302 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 11:19:11,333 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:11,333 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:19:11,334 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:19:11,334 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:19:11,335 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:11,338 INFO L146 ILogger]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2019-05-23 11:19:11,703 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:11,704 INFO L146 ILogger]: Finished difference Result 59 states and 61 transitions. [2019-05-23 11:19:11,704 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:19:11,705 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 25 [2019-05-23 11:19:11,705 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:11,706 INFO L146 ILogger]: With dead ends: 59 [2019-05-23 11:19:11,706 INFO L146 ILogger]: Without dead ends: 43 [2019-05-23 11:19:11,707 INFO L146 ILogger]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:11,707 INFO L146 ILogger]: Start minimizeSevpa. Operand 43 states. [2019-05-23 11:19:11,711 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 43 to 38. [2019-05-23 11:19:11,711 INFO L146 ILogger]: Start removeUnreachable. Operand 38 states. [2019-05-23 11:19:11,712 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2019-05-23 11:19:11,713 INFO L146 ILogger]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 25 [2019-05-23 11:19:11,713 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:11,713 INFO L146 ILogger]: Abstraction has 38 states and 39 transitions. [2019-05-23 11:19:11,713 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:19:11,714 INFO L146 ILogger]: Start isEmpty. Operand 38 states and 39 transitions. [2019-05-23 11:19:11,715 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:19:11,715 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:11,715 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] [2019-05-23 11:19:11,715 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:11,715 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:11,715 INFO L146 ILogger]: Analyzing trace with hash 2144371600, now seen corresponding path program 2 times [2019-05-23 11:19:11,716 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:11,716 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:11,717 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:11,717 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:11,717 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:11,743 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:11,871 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:11,871 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:11,871 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:19:11,884 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:11,902 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:11,902 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:11,903 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:19:11,906 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:11,994 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:12,026 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:12,026 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-05-23 11:19:12,027 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:19:12,028 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:19:12,028 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:12,028 INFO L146 ILogger]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2019-05-23 11:19:12,217 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:12,218 INFO L146 ILogger]: Finished difference Result 66 states and 68 transitions. [2019-05-23 11:19:12,218 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:19:12,219 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 32 [2019-05-23 11:19:12,219 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:12,220 INFO L146 ILogger]: With dead ends: 66 [2019-05-23 11:19:12,221 INFO L146 ILogger]: Without dead ends: 50 [2019-05-23 11:19:12,221 INFO L146 ILogger]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:12,222 INFO L146 ILogger]: Start minimizeSevpa. Operand 50 states. [2019-05-23 11:19:12,227 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 50 to 45. [2019-05-23 11:19:12,227 INFO L146 ILogger]: Start removeUnreachable. Operand 45 states. [2019-05-23 11:19:12,228 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2019-05-23 11:19:12,228 INFO L146 ILogger]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 32 [2019-05-23 11:19:12,228 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:12,229 INFO L146 ILogger]: Abstraction has 45 states and 46 transitions. [2019-05-23 11:19:12,229 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:19:12,229 INFO L146 ILogger]: Start isEmpty. Operand 45 states and 46 transitions. [2019-05-23 11:19:12,230 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:19:12,230 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:12,230 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:12,231 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:12,231 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:12,231 INFO L146 ILogger]: Analyzing trace with hash -1136602909, now seen corresponding path program 3 times [2019-05-23 11:19:12,231 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:12,232 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:12,232 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:12,233 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:12,233 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:12,249 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:12,462 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:12,462 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:12,462 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 11:19:12,484 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:12,557 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:19:12,557 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:12,558 INFO L146 ILogger]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:19:12,560 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:12,763 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:12,790 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:12,791 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:19:12,791 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:19:12,791 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:19:12,792 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:19:12,792 INFO L146 ILogger]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2019-05-23 11:19:13,035 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:13,035 INFO L146 ILogger]: Finished difference Result 73 states and 75 transitions. [2019-05-23 11:19:13,035 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:19:13,036 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 39 [2019-05-23 11:19:13,036 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:13,037 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:19:13,037 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:19:13,037 INFO L146 ILogger]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:19:13,038 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:19:13,042 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 52. [2019-05-23 11:19:13,042 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:19:13,043 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2019-05-23 11:19:13,043 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 39 [2019-05-23 11:19:13,044 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:13,044 INFO L146 ILogger]: Abstraction has 52 states and 53 transitions. [2019-05-23 11:19:13,044 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:19:13,044 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 53 transitions. [2019-05-23 11:19:13,045 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:19:13,045 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:13,046 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:13,046 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:13,046 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:13,046 INFO L146 ILogger]: Analyzing trace with hash 173109296, now seen corresponding path program 4 times [2019-05-23 11:19:13,046 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:13,047 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:13,048 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:13,048 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:13,048 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:13,064 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:13,221 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:13,221 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:13,221 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:19:13,242 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:13,266 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:13,266 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:13,267 INFO L146 ILogger]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:19:13,270 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:13,338 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:13,364 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:13,364 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:19:13,365 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:19:13,365 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:19:13,365 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:13,366 INFO L146 ILogger]: Start difference. First operand 52 states and 53 transitions. Second operand 13 states. [2019-05-23 11:19:13,713 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:13,716 INFO L146 ILogger]: Finished difference Result 80 states and 82 transitions. [2019-05-23 11:19:13,723 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:19:13,723 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 46 [2019-05-23 11:19:13,723 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:13,724 INFO L146 ILogger]: With dead ends: 80 [2019-05-23 11:19:13,724 INFO L146 ILogger]: Without dead ends: 64 [2019-05-23 11:19:13,725 INFO L146 ILogger]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:19:13,726 INFO L146 ILogger]: Start minimizeSevpa. Operand 64 states. [2019-05-23 11:19:13,732 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 64 to 59. [2019-05-23 11:19:13,733 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:19:13,734 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2019-05-23 11:19:13,736 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 46 [2019-05-23 11:19:13,736 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:13,736 INFO L146 ILogger]: Abstraction has 59 states and 60 transitions. [2019-05-23 11:19:13,736 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:19:13,737 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 60 transitions. [2019-05-23 11:19:13,738 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 54 [2019-05-23 11:19:13,740 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:13,740 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:13,740 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:13,741 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:13,741 INFO L146 ILogger]: Analyzing trace with hash -472223677, now seen corresponding path program 5 times [2019-05-23 11:19:13,741 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:13,741 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:13,742 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:13,742 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:13,742 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:13,780 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:14,122 INFO L146 ILogger]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:14,123 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:14,123 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 11:19:14,133 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:14,185 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:19:14,185 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:14,186 INFO L146 ILogger]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:19:14,189 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:14,238 INFO L146 ILogger]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:14,259 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:14,259 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:19:14,259 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:19:14,260 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:19:14,260 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:19:14,260 INFO L146 ILogger]: Start difference. First operand 59 states and 60 transitions. Second operand 15 states. [2019-05-23 11:19:14,792 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:14,793 INFO L146 ILogger]: Finished difference Result 87 states and 89 transitions. [2019-05-23 11:19:14,796 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:19:14,796 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 53 [2019-05-23 11:19:14,797 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:14,798 INFO L146 ILogger]: With dead ends: 87 [2019-05-23 11:19:14,798 INFO L146 ILogger]: Without dead ends: 71 [2019-05-23 11:19:14,799 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:19:14,799 INFO L146 ILogger]: Start minimizeSevpa. Operand 71 states. [2019-05-23 11:19:14,803 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 71 to 66. [2019-05-23 11:19:14,804 INFO L146 ILogger]: Start removeUnreachable. Operand 66 states. [2019-05-23 11:19:14,804 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2019-05-23 11:19:14,805 INFO L146 ILogger]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 53 [2019-05-23 11:19:14,805 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:14,805 INFO L146 ILogger]: Abstraction has 66 states and 67 transitions. [2019-05-23 11:19:14,805 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:19:14,805 INFO L146 ILogger]: Start isEmpty. Operand 66 states and 67 transitions. [2019-05-23 11:19:14,806 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 61 [2019-05-23 11:19:14,806 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:14,807 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:14,807 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:14,807 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:14,807 INFO L146 ILogger]: Analyzing trace with hash -1545091888, now seen corresponding path program 6 times [2019-05-23 11:19:14,808 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:14,808 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:14,808 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:14,809 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:14,809 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:14,823 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:15,009 INFO L146 ILogger]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:15,010 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:15,010 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 11:19:15,019 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:15,082 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:19:15,082 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:15,083 INFO L146 ILogger]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:19:15,086 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:15,133 INFO L146 ILogger]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:15,153 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:15,153 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:19:15,154 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:19:15,154 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:19:15,155 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:19:15,155 INFO L146 ILogger]: Start difference. First operand 66 states and 67 transitions. Second operand 17 states. [2019-05-23 11:19:15,435 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:15,435 INFO L146 ILogger]: Finished difference Result 94 states and 96 transitions. [2019-05-23 11:19:15,436 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:19:15,436 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 60 [2019-05-23 11:19:15,436 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:15,438 INFO L146 ILogger]: With dead ends: 94 [2019-05-23 11:19:15,438 INFO L146 ILogger]: Without dead ends: 78 [2019-05-23 11:19:15,439 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:19:15,440 INFO L146 ILogger]: Start minimizeSevpa. Operand 78 states. [2019-05-23 11:19:15,444 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 78 to 73. [2019-05-23 11:19:15,444 INFO L146 ILogger]: Start removeUnreachable. Operand 73 states. [2019-05-23 11:19:15,445 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2019-05-23 11:19:15,445 INFO L146 ILogger]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 60 [2019-05-23 11:19:15,446 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:15,446 INFO L146 ILogger]: Abstraction has 73 states and 74 transitions. [2019-05-23 11:19:15,446 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:19:15,446 INFO L146 ILogger]: Start isEmpty. Operand 73 states and 74 transitions. [2019-05-23 11:19:15,447 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:19:15,447 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:15,447 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:15,448 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:15,448 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:15,448 INFO L146 ILogger]: Analyzing trace with hash 1157212067, now seen corresponding path program 7 times [2019-05-23 11:19:15,448 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:15,448 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:15,449 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:15,449 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:15,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:15,464 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:15,962 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:15,962 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:15,962 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 11:19:15,972 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:16,001 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:16,002 INFO L146 ILogger]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:19:16,005 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:16,042 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:16,073 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:16,073 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:19:16,074 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:19:16,074 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:19:16,074 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:19:16,075 INFO L146 ILogger]: Start difference. First operand 73 states and 74 transitions. Second operand 19 states. [2019-05-23 11:19:16,500 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:16,500 INFO L146 ILogger]: Finished difference Result 101 states and 103 transitions. [2019-05-23 11:19:16,500 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:19:16,501 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 67 [2019-05-23 11:19:16,501 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:16,502 INFO L146 ILogger]: With dead ends: 101 [2019-05-23 11:19:16,502 INFO L146 ILogger]: Without dead ends: 85 [2019-05-23 11:19:16,503 INFO L146 ILogger]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:19:16,503 INFO L146 ILogger]: Start minimizeSevpa. Operand 85 states. [2019-05-23 11:19:16,508 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 85 to 80. [2019-05-23 11:19:16,508 INFO L146 ILogger]: Start removeUnreachable. Operand 80 states. [2019-05-23 11:19:16,509 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2019-05-23 11:19:16,509 INFO L146 ILogger]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 67 [2019-05-23 11:19:16,510 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:16,510 INFO L146 ILogger]: Abstraction has 80 states and 81 transitions. [2019-05-23 11:19:16,510 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:19:16,510 INFO L146 ILogger]: Start isEmpty. Operand 80 states and 81 transitions. [2019-05-23 11:19:16,511 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:19:16,511 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:16,511 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:16,512 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:16,512 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:16,512 INFO L146 ILogger]: Analyzing trace with hash -419593872, now seen corresponding path program 8 times [2019-05-23 11:19:16,512 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:16,512 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:16,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:16,513 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:16,514 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:16,528 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:16,956 INFO L146 ILogger]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:16,956 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:16,957 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 11:19:16,968 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:16,988 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:16,989 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:16,990 INFO L146 ILogger]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:19:16,993 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:17,026 INFO L146 ILogger]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:17,047 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:17,047 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:19:17,048 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:19:17,048 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:19:17,048 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:19:17,049 INFO L146 ILogger]: Start difference. First operand 80 states and 81 transitions. Second operand 21 states. [2019-05-23 11:19:17,512 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:17,512 INFO L146 ILogger]: Finished difference Result 108 states and 110 transitions. [2019-05-23 11:19:17,513 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:19:17,513 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 74 [2019-05-23 11:19:17,514 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:17,514 INFO L146 ILogger]: With dead ends: 108 [2019-05-23 11:19:17,515 INFO L146 ILogger]: Without dead ends: 92 [2019-05-23 11:19:17,516 INFO L146 ILogger]: 0 DeclaredPredicates, 108 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:19:17,516 INFO L146 ILogger]: Start minimizeSevpa. Operand 92 states. [2019-05-23 11:19:17,522 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 92 to 87. [2019-05-23 11:19:17,522 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:19:17,522 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2019-05-23 11:19:17,523 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 74 [2019-05-23 11:19:17,523 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:17,523 INFO L146 ILogger]: Abstraction has 87 states and 88 transitions. [2019-05-23 11:19:17,523 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:19:17,523 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 88 transitions. [2019-05-23 11:19:17,525 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:19:17,526 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:17,526 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:17,526 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:17,526 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:17,527 INFO L146 ILogger]: Analyzing trace with hash -1712031997, now seen corresponding path program 9 times [2019-05-23 11:19:17,527 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:17,527 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:17,528 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:17,528 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:17,528 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:17,542 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:18,235 INFO L146 ILogger]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:18,236 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:18,236 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 11:19:18,248 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:18,341 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:19:18,341 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:18,343 INFO L146 ILogger]: Trace formula consists of 127 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:19:18,345 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:18,404 INFO L146 ILogger]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:18,424 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:18,424 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:19:18,425 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:19:18,426 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:19:18,426 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:19:18,426 INFO L146 ILogger]: Start difference. First operand 87 states and 88 transitions. Second operand 23 states. [2019-05-23 11:19:18,909 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:18,910 INFO L146 ILogger]: Finished difference Result 115 states and 117 transitions. [2019-05-23 11:19:18,910 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:19:18,910 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 81 [2019-05-23 11:19:18,911 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:18,912 INFO L146 ILogger]: With dead ends: 115 [2019-05-23 11:19:18,912 INFO L146 ILogger]: Without dead ends: 99 [2019-05-23 11:19:18,913 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:19:18,914 INFO L146 ILogger]: Start minimizeSevpa. Operand 99 states. [2019-05-23 11:19:18,919 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 99 to 94. [2019-05-23 11:19:18,919 INFO L146 ILogger]: Start removeUnreachable. Operand 94 states. [2019-05-23 11:19:18,920 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2019-05-23 11:19:18,920 INFO L146 ILogger]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 81 [2019-05-23 11:19:18,920 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:18,920 INFO L146 ILogger]: Abstraction has 94 states and 95 transitions. [2019-05-23 11:19:18,921 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:19:18,921 INFO L146 ILogger]: Start isEmpty. Operand 94 states and 95 transitions. [2019-05-23 11:19:18,922 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:19:18,922 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:18,922 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:18,923 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:18,923 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:18,923 INFO L146 ILogger]: Analyzing trace with hash -327375344, now seen corresponding path program 10 times [2019-05-23 11:19:18,923 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:18,923 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:18,924 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:18,924 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:18,925 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:18,939 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:19,369 INFO L146 ILogger]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:19,369 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:19,370 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 11:19:19,384 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:19,433 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:19,433 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:19,434 INFO L146 ILogger]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:19:19,437 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:19,493 INFO L146 ILogger]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:19,516 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:19,516 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:19:19,517 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:19:19,517 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:19:19,517 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:19:19,518 INFO L146 ILogger]: Start difference. First operand 94 states and 95 transitions. Second operand 25 states. [2019-05-23 11:19:20,027 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:20,027 INFO L146 ILogger]: Finished difference Result 122 states and 124 transitions. [2019-05-23 11:19:20,028 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:19:20,028 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 88 [2019-05-23 11:19:20,028 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:20,029 INFO L146 ILogger]: With dead ends: 122 [2019-05-23 11:19:20,029 INFO L146 ILogger]: Without dead ends: 106 [2019-05-23 11:19:20,030 INFO L146 ILogger]: 0 DeclaredPredicates, 130 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:19:20,031 INFO L146 ILogger]: Start minimizeSevpa. Operand 106 states. [2019-05-23 11:19:20,043 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 106 to 101. [2019-05-23 11:19:20,043 INFO L146 ILogger]: Start removeUnreachable. Operand 101 states. [2019-05-23 11:19:20,044 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2019-05-23 11:19:20,044 INFO L146 ILogger]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 88 [2019-05-23 11:19:20,044 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:20,045 INFO L146 ILogger]: Abstraction has 101 states and 102 transitions. [2019-05-23 11:19:20,045 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:19:20,045 INFO L146 ILogger]: Start isEmpty. Operand 101 states and 102 transitions. [2019-05-23 11:19:20,049 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 96 [2019-05-23 11:19:20,049 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:20,049 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:20,050 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:20,050 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:20,050 INFO L146 ILogger]: Analyzing trace with hash -828318109, now seen corresponding path program 11 times [2019-05-23 11:19:20,050 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:20,050 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:20,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:20,051 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:20,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:20,074 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:20,365 INFO L146 ILogger]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:20,365 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:20,365 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 11:19:20,374 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:20,465 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:19:20,465 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:20,467 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:19:20,469 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:20,585 INFO L146 ILogger]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:20,604 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:20,604 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:19:20,605 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:19:20,605 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:19:20,605 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:19:20,606 INFO L146 ILogger]: Start difference. First operand 101 states and 102 transitions. Second operand 27 states. [2019-05-23 11:19:21,107 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:21,107 INFO L146 ILogger]: Finished difference Result 129 states and 131 transitions. [2019-05-23 11:19:21,107 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:19:21,108 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 95 [2019-05-23 11:19:21,108 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:21,109 INFO L146 ILogger]: With dead ends: 129 [2019-05-23 11:19:21,109 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:19:21,111 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:19:21,111 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:19:21,116 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 108. [2019-05-23 11:19:21,116 INFO L146 ILogger]: Start removeUnreachable. Operand 108 states. [2019-05-23 11:19:21,117 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2019-05-23 11:19:21,117 INFO L146 ILogger]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 95 [2019-05-23 11:19:21,118 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:21,118 INFO L146 ILogger]: Abstraction has 108 states and 109 transitions. [2019-05-23 11:19:21,118 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:19:21,118 INFO L146 ILogger]: Start isEmpty. Operand 108 states and 109 transitions. [2019-05-23 11:19:21,119 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 103 [2019-05-23 11:19:21,119 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:21,119 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:21,120 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:21,120 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:21,120 INFO L146 ILogger]: Analyzing trace with hash -338742608, now seen corresponding path program 12 times [2019-05-23 11:19:21,120 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:21,120 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:21,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,121 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:21,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,134 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:21,522 INFO L146 ILogger]: Checked inductivity of 474 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:21,522 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:21,522 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 11:19:21,531 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:21,741 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:19:21,741 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:21,743 INFO L146 ILogger]: Trace formula consists of 157 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:19:21,745 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:21,796 INFO L146 ILogger]: Checked inductivity of 474 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:21,825 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:21,825 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:19:21,826 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:19:21,826 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:19:21,827 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:19:21,827 INFO L146 ILogger]: Start difference. First operand 108 states and 109 transitions. Second operand 29 states. [2019-05-23 11:19:22,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:22,787 INFO L146 ILogger]: Finished difference Result 136 states and 138 transitions. [2019-05-23 11:19:22,790 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:19:22,790 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 102 [2019-05-23 11:19:22,790 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:22,791 INFO L146 ILogger]: With dead ends: 136 [2019-05-23 11:19:22,791 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:19:22,793 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:19:22,793 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:19:22,798 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 115. [2019-05-23 11:19:22,799 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:19:22,799 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2019-05-23 11:19:22,799 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 102 [2019-05-23 11:19:22,800 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:22,800 INFO L146 ILogger]: Abstraction has 115 states and 116 transitions. [2019-05-23 11:19:22,800 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:19:22,800 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 116 transitions. [2019-05-23 11:19:22,801 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:19:22,801 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:22,801 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:22,801 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:22,802 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:22,802 INFO L146 ILogger]: Analyzing trace with hash 1616174531, now seen corresponding path program 13 times [2019-05-23 11:19:22,802 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:22,802 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:22,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:22,805 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:22,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:22,825 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:23,767 INFO L146 ILogger]: Checked inductivity of 559 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:23,767 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:23,767 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 11:19:23,782 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:23,822 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:23,823 INFO L146 ILogger]: Trace formula consists of 167 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:19:23,825 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:23,948 INFO L146 ILogger]: Checked inductivity of 559 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:23,977 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:23,977 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:19:23,978 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:19:23,978 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:19:23,979 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:19:23,979 INFO L146 ILogger]: Start difference. First operand 115 states and 116 transitions. Second operand 31 states. [2019-05-23 11:19:25,576 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:25,576 INFO L146 ILogger]: Finished difference Result 143 states and 145 transitions. [2019-05-23 11:19:25,576 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:19:25,577 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 109 [2019-05-23 11:19:25,577 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:25,578 INFO L146 ILogger]: With dead ends: 143 [2019-05-23 11:19:25,579 INFO L146 ILogger]: Without dead ends: 127 [2019-05-23 11:19:25,581 INFO L146 ILogger]: 0 DeclaredPredicates, 163 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:19:25,581 INFO L146 ILogger]: Start minimizeSevpa. Operand 127 states. [2019-05-23 11:19:25,583 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 127 to 122. [2019-05-23 11:19:25,584 INFO L146 ILogger]: Start removeUnreachable. Operand 122 states. [2019-05-23 11:19:25,584 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2019-05-23 11:19:25,584 INFO L146 ILogger]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 109 [2019-05-23 11:19:25,585 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:25,585 INFO L146 ILogger]: Abstraction has 122 states and 123 transitions. [2019-05-23 11:19:25,585 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:19:25,585 INFO L146 ILogger]: Start isEmpty. Operand 122 states and 123 transitions. [2019-05-23 11:19:25,586 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:19:25,586 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:25,586 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:25,586 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:25,586 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:25,587 INFO L146 ILogger]: Analyzing trace with hash -622909616, now seen corresponding path program 14 times [2019-05-23 11:19:25,587 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:25,587 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:25,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,588 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:25,588 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,599 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:26,011 INFO L146 ILogger]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:26,011 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:26,011 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 11:19:26,020 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:26,060 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:26,060 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:26,062 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:19:26,064 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:26,142 INFO L146 ILogger]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:26,170 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:26,170 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:19:26,171 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:19:26,171 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:19:26,172 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:19:26,172 INFO L146 ILogger]: Start difference. First operand 122 states and 123 transitions. Second operand 33 states. [2019-05-23 11:19:27,359 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:27,359 INFO L146 ILogger]: Finished difference Result 150 states and 152 transitions. [2019-05-23 11:19:27,360 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:19:27,360 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 116 [2019-05-23 11:19:27,360 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:27,361 INFO L146 ILogger]: With dead ends: 150 [2019-05-23 11:19:27,361 INFO L146 ILogger]: Without dead ends: 134 [2019-05-23 11:19:27,363 INFO L146 ILogger]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:19:27,364 INFO L146 ILogger]: Start minimizeSevpa. Operand 134 states. [2019-05-23 11:19:27,367 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 134 to 129. [2019-05-23 11:19:27,367 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:19:27,368 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2019-05-23 11:19:27,368 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 116 [2019-05-23 11:19:27,368 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:27,368 INFO L146 ILogger]: Abstraction has 129 states and 130 transitions. [2019-05-23 11:19:27,368 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:19:27,369 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 130 transitions. [2019-05-23 11:19:27,369 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:19:27,369 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:27,370 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:27,370 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:27,370 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:27,370 INFO L146 ILogger]: Analyzing trace with hash -1108970205, now seen corresponding path program 15 times [2019-05-23 11:19:27,370 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:27,370 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:27,371 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:27,371 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:27,371 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:27,382 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:27,820 INFO L146 ILogger]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:27,820 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:27,820 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 11:19:27,830 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:28,123 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-05-23 11:19:28,124 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:28,128 INFO L146 ILogger]: Trace formula consists of 187 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:19:28,130 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:28,189 INFO L146 ILogger]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:28,215 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:28,215 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:19:28,215 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:19:28,216 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:19:28,216 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:19:28,216 INFO L146 ILogger]: Start difference. First operand 129 states and 130 transitions. Second operand 35 states. [2019-05-23 11:19:29,042 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:29,042 INFO L146 ILogger]: Finished difference Result 157 states and 159 transitions. [2019-05-23 11:19:29,042 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:19:29,043 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 123 [2019-05-23 11:19:29,043 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:29,044 INFO L146 ILogger]: With dead ends: 157 [2019-05-23 11:19:29,044 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:19:29,046 INFO L146 ILogger]: 0 DeclaredPredicates, 185 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:19:29,046 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:19:29,049 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 136. [2019-05-23 11:19:29,049 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:19:29,049 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2019-05-23 11:19:29,050 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 123 [2019-05-23 11:19:29,050 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:29,050 INFO L146 ILogger]: Abstraction has 136 states and 137 transitions. [2019-05-23 11:19:29,050 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:19:29,050 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 137 transitions. [2019-05-23 11:19:29,051 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:19:29,051 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:29,051 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:29,052 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:29,052 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:29,052 INFO L146 ILogger]: Analyzing trace with hash 236356592, now seen corresponding path program 16 times [2019-05-23 11:19:29,052 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:29,052 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:29,053 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:29,053 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:29,053 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:29,065 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:29,623 INFO L146 ILogger]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:29,624 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:29,624 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:29,633 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:29,739 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:29,740 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:29,741 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:19:29,743 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:29,803 INFO L146 ILogger]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:29,827 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:29,827 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-05-23 11:19:29,827 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:19:29,828 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:19:29,828 INFO L146 ILogger]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:19:29,828 INFO L146 ILogger]: Start difference. First operand 136 states and 137 transitions. Second operand 37 states. [2019-05-23 11:19:30,615 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:30,616 INFO L146 ILogger]: Finished difference Result 164 states and 166 transitions. [2019-05-23 11:19:30,616 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:19:30,616 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 130 [2019-05-23 11:19:30,617 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:30,618 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:19:30,618 INFO L146 ILogger]: Without dead ends: 148 [2019-05-23 11:19:30,619 INFO L146 ILogger]: 0 DeclaredPredicates, 196 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:19:30,620 INFO L146 ILogger]: Start minimizeSevpa. Operand 148 states. [2019-05-23 11:19:30,623 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 148 to 143. [2019-05-23 11:19:30,623 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:19:30,624 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2019-05-23 11:19:30,624 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 130 [2019-05-23 11:19:30,624 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:30,625 INFO L146 ILogger]: Abstraction has 143 states and 144 transitions. [2019-05-23 11:19:30,625 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:19:30,625 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 144 transitions. [2019-05-23 11:19:30,625 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:19:30,626 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:30,626 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:30,626 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:30,626 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:30,626 INFO L146 ILogger]: Analyzing trace with hash -1481923453, now seen corresponding path program 17 times [2019-05-23 11:19:30,627 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:30,627 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:30,627 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:30,628 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:30,628 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:30,639 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:31,153 INFO L146 ILogger]: Checked inductivity of 969 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:31,154 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:31,154 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:31,163 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:31,557 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:19:31,557 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:31,560 INFO L146 ILogger]: Trace formula consists of 207 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:19:31,562 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:31,629 INFO L146 ILogger]: Checked inductivity of 969 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:31,649 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:31,650 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:19:31,650 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:19:31,651 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:19:31,651 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:19:31,652 INFO L146 ILogger]: Start difference. First operand 143 states and 144 transitions. Second operand 39 states. [2019-05-23 11:19:32,530 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:32,530 INFO L146 ILogger]: Finished difference Result 171 states and 173 transitions. [2019-05-23 11:19:32,531 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:19:32,531 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 137 [2019-05-23 11:19:32,531 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:32,533 INFO L146 ILogger]: With dead ends: 171 [2019-05-23 11:19:32,533 INFO L146 ILogger]: Without dead ends: 155 [2019-05-23 11:19:32,535 INFO L146 ILogger]: 0 DeclaredPredicates, 207 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:19:32,536 INFO L146 ILogger]: Start minimizeSevpa. Operand 155 states. [2019-05-23 11:19:32,538 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 155 to 150. [2019-05-23 11:19:32,538 INFO L146 ILogger]: Start removeUnreachable. Operand 150 states. [2019-05-23 11:19:32,538 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2019-05-23 11:19:32,539 INFO L146 ILogger]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 137 [2019-05-23 11:19:32,539 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:32,539 INFO L146 ILogger]: Abstraction has 150 states and 151 transitions. [2019-05-23 11:19:32,539 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:19:32,539 INFO L146 ILogger]: Start isEmpty. Operand 150 states and 151 transitions. [2019-05-23 11:19:32,540 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:19:32,540 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:32,540 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:32,541 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:32,541 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:32,541 INFO L146 ILogger]: Analyzing trace with hash -664844144, now seen corresponding path program 18 times [2019-05-23 11:19:32,541 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:32,541 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:32,542 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:32,542 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:32,542 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:32,555 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:33,790 INFO L146 ILogger]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:33,791 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:33,791 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:33,799 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:34,507 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-05-23 11:19:34,508 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:34,511 INFO L146 ILogger]: Trace formula consists of 217 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:19:34,513 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:34,620 INFO L146 ILogger]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:34,652 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:34,652 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:19:34,652 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:19:34,653 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:19:34,654 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:19:34,654 INFO L146 ILogger]: Start difference. First operand 150 states and 151 transitions. Second operand 41 states. [2019-05-23 11:19:35,692 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:35,692 INFO L146 ILogger]: Finished difference Result 178 states and 180 transitions. [2019-05-23 11:19:35,693 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:19:35,693 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 144 [2019-05-23 11:19:35,693 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:35,694 INFO L146 ILogger]: With dead ends: 178 [2019-05-23 11:19:35,694 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:19:35,696 INFO L146 ILogger]: 0 DeclaredPredicates, 218 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:19:35,697 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:19:35,700 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 157. [2019-05-23 11:19:35,700 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:19:35,701 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2019-05-23 11:19:35,701 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 144 [2019-05-23 11:19:35,701 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:35,702 INFO L146 ILogger]: Abstraction has 157 states and 158 transitions. [2019-05-23 11:19:35,702 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:19:35,702 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 158 transitions. [2019-05-23 11:19:35,702 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:19:35,702 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:35,703 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:35,703 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:35,703 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:35,703 INFO L146 ILogger]: Analyzing trace with hash -1887802397, now seen corresponding path program 19 times [2019-05-23 11:19:35,703 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:35,703 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:35,704 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:35,704 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:35,704 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:35,719 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:36,419 INFO L146 ILogger]: Checked inductivity of 1216 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:36,419 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:36,420 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:36,429 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:36,462 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:36,464 INFO L146 ILogger]: Trace formula consists of 227 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:19:36,465 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:36,517 INFO L146 ILogger]: Checked inductivity of 1216 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:36,536 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:36,536 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-05-23 11:19:36,536 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:19:36,537 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:19:36,537 INFO L146 ILogger]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:19:36,538 INFO L146 ILogger]: Start difference. First operand 157 states and 158 transitions. Second operand 43 states. [2019-05-23 11:19:37,595 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:37,596 INFO L146 ILogger]: Finished difference Result 185 states and 187 transitions. [2019-05-23 11:19:37,596 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:19:37,596 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 151 [2019-05-23 11:19:37,597 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:37,598 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:19:37,598 INFO L146 ILogger]: Without dead ends: 169 [2019-05-23 11:19:37,600 INFO L146 ILogger]: 0 DeclaredPredicates, 229 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:19:37,601 INFO L146 ILogger]: Start minimizeSevpa. Operand 169 states. [2019-05-23 11:19:37,603 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 169 to 164. [2019-05-23 11:19:37,603 INFO L146 ILogger]: Start removeUnreachable. Operand 164 states. [2019-05-23 11:19:37,604 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2019-05-23 11:19:37,604 INFO L146 ILogger]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 151 [2019-05-23 11:19:37,605 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:37,605 INFO L146 ILogger]: Abstraction has 164 states and 165 transitions. [2019-05-23 11:19:37,605 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:19:37,605 INFO L146 ILogger]: Start isEmpty. Operand 164 states and 165 transitions. [2019-05-23 11:19:37,606 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 159 [2019-05-23 11:19:37,606 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:37,606 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:37,606 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:37,606 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:37,607 INFO L146 ILogger]: Analyzing trace with hash 723744048, now seen corresponding path program 20 times [2019-05-23 11:19:37,607 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:37,607 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:37,607 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:37,608 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:37,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:37,620 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:38,235 INFO L146 ILogger]: Checked inductivity of 1350 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:38,235 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:38,235 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:38,244 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:38,284 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:38,284 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:38,285 INFO L146 ILogger]: Trace formula consists of 237 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:19:38,288 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:38,357 INFO L146 ILogger]: Checked inductivity of 1350 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:38,376 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:38,376 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:19:38,376 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:19:38,377 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:19:38,377 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:19:38,377 INFO L146 ILogger]: Start difference. First operand 164 states and 165 transitions. Second operand 45 states. [2019-05-23 11:19:39,648 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:39,648 INFO L146 ILogger]: Finished difference Result 192 states and 194 transitions. [2019-05-23 11:19:39,650 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:19:39,650 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 158 [2019-05-23 11:19:39,651 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:39,652 INFO L146 ILogger]: With dead ends: 192 [2019-05-23 11:19:39,652 INFO L146 ILogger]: Without dead ends: 176 [2019-05-23 11:19:39,654 INFO L146 ILogger]: 0 DeclaredPredicates, 240 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:19:39,654 INFO L146 ILogger]: Start minimizeSevpa. Operand 176 states. [2019-05-23 11:19:39,656 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 176 to 171. [2019-05-23 11:19:39,657 INFO L146 ILogger]: Start removeUnreachable. Operand 171 states. [2019-05-23 11:19:39,657 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2019-05-23 11:19:39,657 INFO L146 ILogger]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 158 [2019-05-23 11:19:39,658 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:39,658 INFO L146 ILogger]: Abstraction has 171 states and 172 transitions. [2019-05-23 11:19:39,658 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:19:39,658 INFO L146 ILogger]: Start isEmpty. Operand 171 states and 172 transitions. [2019-05-23 11:19:39,659 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:19:39,659 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:39,659 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:39,660 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:39,660 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:39,660 INFO L146 ILogger]: Analyzing trace with hash -123155645, now seen corresponding path program 21 times [2019-05-23 11:19:39,660 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:39,660 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:39,661 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:39,661 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:39,661 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:39,674 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:40,390 INFO L146 ILogger]: Checked inductivity of 1491 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:40,390 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:40,390 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:40,399 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:42,798 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-05-23 11:19:42,798 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:42,803 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:19:42,805 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:42,876 INFO L146 ILogger]: Checked inductivity of 1491 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:42,906 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:42,906 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:19:42,906 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:19:42,907 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:19:42,907 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:19:42,907 INFO L146 ILogger]: Start difference. First operand 171 states and 172 transitions. Second operand 47 states. [2019-05-23 11:19:44,124 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:44,125 INFO L146 ILogger]: Finished difference Result 199 states and 201 transitions. [2019-05-23 11:19:44,125 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:19:44,125 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 165 [2019-05-23 11:19:44,126 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:44,126 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:19:44,126 INFO L146 ILogger]: Without dead ends: 183 [2019-05-23 11:19:44,127 INFO L146 ILogger]: 0 DeclaredPredicates, 251 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:19:44,128 INFO L146 ILogger]: Start minimizeSevpa. Operand 183 states. [2019-05-23 11:19:44,129 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 183 to 178. [2019-05-23 11:19:44,130 INFO L146 ILogger]: Start removeUnreachable. Operand 178 states. [2019-05-23 11:19:44,130 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2019-05-23 11:19:44,130 INFO L146 ILogger]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 165 [2019-05-23 11:19:44,131 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:44,131 INFO L146 ILogger]: Abstraction has 178 states and 179 transitions. [2019-05-23 11:19:44,131 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:19:44,131 INFO L146 ILogger]: Start isEmpty. Operand 178 states and 179 transitions. [2019-05-23 11:19:44,131 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 173 [2019-05-23 11:19:44,131 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:44,132 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:44,132 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:44,132 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:44,132 INFO L146 ILogger]: Analyzing trace with hash 911018448, now seen corresponding path program 22 times [2019-05-23 11:19:44,132 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:44,132 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:44,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:44,133 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:44,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:44,146 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:45,179 INFO L146 ILogger]: Checked inductivity of 1639 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:45,180 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:45,180 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:45,189 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:45,403 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:45,403 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:45,405 INFO L146 ILogger]: Trace formula consists of 257 conjuncts, 46 conjunts are in the unsatisfiable core [2019-05-23 11:19:45,407 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:45,486 INFO L146 ILogger]: Checked inductivity of 1639 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:45,505 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:45,506 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2019-05-23 11:19:45,506 INFO L146 ILogger]: Interpolant automaton has 49 states [2019-05-23 11:19:45,506 INFO L146 ILogger]: Constructing interpolant automaton starting with 49 interpolants. [2019-05-23 11:19:45,507 INFO L146 ILogger]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:19:45,507 INFO L146 ILogger]: Start difference. First operand 178 states and 179 transitions. Second operand 49 states. [2019-05-23 11:19:46,915 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:46,916 INFO L146 ILogger]: Finished difference Result 206 states and 208 transitions. [2019-05-23 11:19:46,916 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-05-23 11:19:46,916 INFO L146 ILogger]: Start accepts. Automaton has 49 states. Word has length 172 [2019-05-23 11:19:46,917 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:46,918 INFO L146 ILogger]: With dead ends: 206 [2019-05-23 11:19:46,918 INFO L146 ILogger]: Without dead ends: 190 [2019-05-23 11:19:46,919 INFO L146 ILogger]: 0 DeclaredPredicates, 262 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2019-05-23 11:19:46,920 INFO L146 ILogger]: Start minimizeSevpa. Operand 190 states. [2019-05-23 11:19:46,924 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 190 to 185. [2019-05-23 11:19:46,924 INFO L146 ILogger]: Start removeUnreachable. Operand 185 states. [2019-05-23 11:19:46,925 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2019-05-23 11:19:46,925 INFO L146 ILogger]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 172 [2019-05-23 11:19:46,925 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:46,926 INFO L146 ILogger]: Abstraction has 185 states and 186 transitions. [2019-05-23 11:19:46,926 INFO L146 ILogger]: Interpolant automaton has 49 states. [2019-05-23 11:19:46,926 INFO L146 ILogger]: Start isEmpty. Operand 185 states and 186 transitions. [2019-05-23 11:19:46,927 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 180 [2019-05-23 11:19:46,927 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:46,927 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:46,927 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:46,927 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:46,928 INFO L146 ILogger]: Analyzing trace with hash -670252381, now seen corresponding path program 23 times [2019-05-23 11:19:46,928 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:46,928 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:46,928 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:46,929 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:46,929 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:46,943 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:47,835 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:47,835 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:47,835 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:47,843 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:48,731 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-05-23 11:19:48,732 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:48,737 INFO L146 ILogger]: Trace formula consists of 267 conjuncts, 48 conjunts are in the unsatisfiable core [2019-05-23 11:19:48,739 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:48,818 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:48,837 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:48,838 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-05-23 11:19:48,838 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:19:48,838 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:19:48,839 INFO L146 ILogger]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:19:48,839 INFO L146 ILogger]: Start difference. First operand 185 states and 186 transitions. Second operand 51 states. [2019-05-23 11:19:51,223 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:51,223 INFO L146 ILogger]: Finished difference Result 213 states and 215 transitions. [2019-05-23 11:19:51,223 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-05-23 11:19:51,224 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 179 [2019-05-23 11:19:51,224 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:51,225 INFO L146 ILogger]: With dead ends: 213 [2019-05-23 11:19:51,225 INFO L146 ILogger]: Without dead ends: 197 [2019-05-23 11:19:51,227 INFO L146 ILogger]: 0 DeclaredPredicates, 273 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:19:51,227 INFO L146 ILogger]: Start minimizeSevpa. Operand 197 states. [2019-05-23 11:19:51,231 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 197 to 192. [2019-05-23 11:19:51,231 INFO L146 ILogger]: Start removeUnreachable. Operand 192 states. [2019-05-23 11:19:51,232 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2019-05-23 11:19:51,232 INFO L146 ILogger]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 179 [2019-05-23 11:19:51,233 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:51,233 INFO L146 ILogger]: Abstraction has 192 states and 193 transitions. [2019-05-23 11:19:51,233 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:19:51,233 INFO L146 ILogger]: Start isEmpty. Operand 192 states and 193 transitions. [2019-05-23 11:19:51,234 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 187 [2019-05-23 11:19:51,234 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:51,235 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:51,235 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:51,235 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:51,235 INFO L146 ILogger]: Analyzing trace with hash 138806896, now seen corresponding path program 24 times [2019-05-23 11:19:51,236 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:51,236 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:51,236 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:51,236 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:51,237 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:51,254 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:52,218 INFO L146 ILogger]: Checked inductivity of 1956 backedges. 0 proven. 1956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:52,219 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:52,219 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:52,227 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:57,769 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-05-23 11:19:57,769 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:57,777 INFO L146 ILogger]: Trace formula consists of 277 conjuncts, 50 conjunts are in the unsatisfiable core [2019-05-23 11:19:57,780 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:58,582 INFO L146 ILogger]: Checked inductivity of 1956 backedges. 0 proven. 1956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:58,620 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:58,620 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2019-05-23 11:19:58,621 INFO L146 ILogger]: Interpolant automaton has 53 states [2019-05-23 11:19:58,621 INFO L146 ILogger]: Constructing interpolant automaton starting with 53 interpolants. [2019-05-23 11:19:58,622 INFO L146 ILogger]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:19:58,622 INFO L146 ILogger]: Start difference. First operand 192 states and 193 transitions. Second operand 53 states. [2019-05-23 11:20:00,448 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:00,449 INFO L146 ILogger]: Finished difference Result 220 states and 222 transitions. [2019-05-23 11:20:00,449 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2019-05-23 11:20:00,449 INFO L146 ILogger]: Start accepts. Automaton has 53 states. Word has length 186 [2019-05-23 11:20:00,450 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:00,451 INFO L146 ILogger]: With dead ends: 220 [2019-05-23 11:20:00,451 INFO L146 ILogger]: Without dead ends: 204 [2019-05-23 11:20:00,453 INFO L146 ILogger]: 0 DeclaredPredicates, 284 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2019-05-23 11:20:00,454 INFO L146 ILogger]: Start minimizeSevpa. Operand 204 states. [2019-05-23 11:20:00,457 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 204 to 199. [2019-05-23 11:20:00,457 INFO L146 ILogger]: Start removeUnreachable. Operand 199 states. [2019-05-23 11:20:00,458 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2019-05-23 11:20:00,458 INFO L146 ILogger]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 186 [2019-05-23 11:20:00,458 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:00,459 INFO L146 ILogger]: Abstraction has 199 states and 200 transitions. [2019-05-23 11:20:00,459 INFO L146 ILogger]: Interpolant automaton has 53 states. [2019-05-23 11:20:00,459 INFO L146 ILogger]: Start isEmpty. Operand 199 states and 200 transitions. [2019-05-23 11:20:00,460 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 194 [2019-05-23 11:20:00,460 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:00,460 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:00,460 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:00,460 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:00,461 INFO L146 ILogger]: Analyzing trace with hash -201567741, now seen corresponding path program 25 times [2019-05-23 11:20:00,461 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:00,461 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:00,461 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:00,462 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:00,462 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:00,477 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:01,335 INFO L146 ILogger]: Checked inductivity of 2125 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:01,335 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:01,335 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:01,344 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:01,392 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:01,393 INFO L146 ILogger]: Trace formula consists of 287 conjuncts, 52 conjunts are in the unsatisfiable core [2019-05-23 11:20:01,396 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:01,482 INFO L146 ILogger]: Checked inductivity of 2125 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:01,501 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:01,502 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2019-05-23 11:20:01,502 INFO L146 ILogger]: Interpolant automaton has 55 states [2019-05-23 11:20:01,502 INFO L146 ILogger]: Constructing interpolant automaton starting with 55 interpolants. [2019-05-23 11:20:01,503 INFO L146 ILogger]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2019-05-23 11:20:01,503 INFO L146 ILogger]: Start difference. First operand 199 states and 200 transitions. Second operand 55 states. [2019-05-23 11:20:04,174 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:04,175 INFO L146 ILogger]: Finished difference Result 227 states and 229 transitions. [2019-05-23 11:20:04,175 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2019-05-23 11:20:04,175 INFO L146 ILogger]: Start accepts. Automaton has 55 states. Word has length 193 [2019-05-23 11:20:04,175 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:04,176 INFO L146 ILogger]: With dead ends: 227 [2019-05-23 11:20:04,176 INFO L146 ILogger]: Without dead ends: 211 [2019-05-23 11:20:04,177 INFO L146 ILogger]: 0 DeclaredPredicates, 295 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2019-05-23 11:20:04,178 INFO L146 ILogger]: Start minimizeSevpa. Operand 211 states. [2019-05-23 11:20:04,181 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 211 to 206. [2019-05-23 11:20:04,181 INFO L146 ILogger]: Start removeUnreachable. Operand 206 states. [2019-05-23 11:20:04,182 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2019-05-23 11:20:04,182 INFO L146 ILogger]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 193 [2019-05-23 11:20:04,182 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:04,182 INFO L146 ILogger]: Abstraction has 206 states and 207 transitions. [2019-05-23 11:20:04,182 INFO L146 ILogger]: Interpolant automaton has 55 states. [2019-05-23 11:20:04,183 INFO L146 ILogger]: Start isEmpty. Operand 206 states and 207 transitions. [2019-05-23 11:20:04,184 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 201 [2019-05-23 11:20:04,184 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:04,184 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:04,184 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:04,184 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:04,185 INFO L146 ILogger]: Analyzing trace with hash 771255056, now seen corresponding path program 26 times [2019-05-23 11:20:04,185 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:04,185 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:04,185 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:04,186 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:04,187 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:04,204 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:05,794 INFO L146 ILogger]: Checked inductivity of 2301 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:05,794 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:05,794 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:05,803 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:05,849 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:05,849 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:05,851 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 54 conjunts are in the unsatisfiable core [2019-05-23 11:20:05,854 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:05,925 INFO L146 ILogger]: Checked inductivity of 2301 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:05,944 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:05,944 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2019-05-23 11:20:05,944 INFO L146 ILogger]: Interpolant automaton has 57 states [2019-05-23 11:20:05,945 INFO L146 ILogger]: Constructing interpolant automaton starting with 57 interpolants. [2019-05-23 11:20:05,945 INFO L146 ILogger]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:20:05,945 INFO L146 ILogger]: Start difference. First operand 206 states and 207 transitions. Second operand 57 states.