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_copyInitSum_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:17:54,281 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:17:54,283 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:17:54,297 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:17:54,298 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:17:54,299 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:17:54,300 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:17:54,302 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:17:54,304 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:17:54,305 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:17:54,306 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:17:54,306 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:17:54,307 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:17:54,308 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:17:54,309 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:17:54,310 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:17:54,311 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:17:54,313 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:17:54,315 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:17:54,317 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:17:54,318 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:17:54,319 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:17:54,322 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:17:54,322 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:17:54,322 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:17:54,324 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:17:54,324 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:17:54,325 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:17:54,325 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:17:54,326 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:17:54,327 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:17:54,328 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:17:54,329 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:17:54,329 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:17:54,330 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:17:54,330 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:17:54,331 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:17:54,332 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:17:54,332 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:17:54,333 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:17:54,353 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:17:54,356 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:17:54,357 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:17:54,357 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:17:54,358 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:17:54,358 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:17:54,358 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:17:54,358 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:17:54,358 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:17:54,360 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:17:54,361 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:17:54,361 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:17:54,361 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:17:54,361 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:17:54,362 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:17:54,363 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:17:54,363 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:17:54,363 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:17:54,363 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:17:54,364 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:17:54,364 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:17:54,364 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:17:54,364 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:17:54,364 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:17:54,365 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:17:54,365 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:17:54,366 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:17:54,366 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:17:54,366 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 11:17:54,414 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:17:54,429 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:17:54,432 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:17:54,433 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:17:54,433 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:17:54,434 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copyInitSum_true-unreach-call_ground.i [2019-05-23 11:17:54,483 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de8564203/0ca56fa4902944a8926b1a3b2fed560e/FLAG96b6a966f [2019-05-23 11:17:54,998 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:17:54,998 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copyInitSum_true-unreach-call_ground.i [2019-05-23 11:17:55,004 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de8564203/0ca56fa4902944a8926b1a3b2fed560e/FLAG96b6a966f [2019-05-23 11:17:55,466 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de8564203/0ca56fa4902944a8926b1a3b2fed560e [2019-05-23 11:17:55,477 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:17:55,478 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:17:55,480 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:55,480 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:17:55,485 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:17:55,486 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,489 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fe4197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55, skipping insertion in model container [2019-05-23 11:17:55,490 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,498 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:17:55,522 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:17:55,733 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:55,737 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:17:55,758 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:55,777 INFO L146 ILogger]: Completed translation [2019-05-23 11:17:55,777 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55 WrapperNode [2019-05-23 11:17:55,777 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:55,778 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:55,778 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:17:55,778 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:17:55,787 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,795 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,816 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:55,816 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:17:55,816 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:17:55,816 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:17:55,913 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,913 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,915 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,915 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,921 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,926 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,928 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,930 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:17:55,930 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:17:55,930 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:17:55,930 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:17:55,931 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (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 11:17:55,986 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:17:55,986 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:17:55,986 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:17:55,986 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:17:55,986 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:17:55,987 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:17:56,459 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:17:56,459 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:17:56,461 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:56 BoogieIcfgContainer [2019-05-23 11:17:56,462 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:17:56,462 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:17:56,463 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:17:56,467 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:17:56,467 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:17:55" (1/3) ... [2019-05-23 11:17:56,468 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec83a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:56, skipping insertion in model container [2019-05-23 11:17:56,468 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55" (2/3) ... [2019-05-23 11:17:56,469 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec83a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:56, skipping insertion in model container [2019-05-23 11:17:56,469 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:56" (3/3) ... [2019-05-23 11:17:56,472 INFO L146 ILogger]: Analyzing ICFG standard_copyInitSum_true-unreach-call_ground.i [2019-05-23 11:17:56,482 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:17:56,504 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:17:56,519 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:17:56,545 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:17:56,546 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:17:56,546 INFO L146 ILogger]: Hoare is true [2019-05-23 11:17:56,546 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:17:56,547 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:17:56,547 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:17:56,547 INFO L146 ILogger]: Difference is false [2019-05-23 11:17:56,547 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:17:56,548 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:17:56,563 INFO L146 ILogger]: Start isEmpty. Operand 51 states. [2019-05-23 11:17:56,570 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:17:56,570 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:56,571 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:56,573 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:56,579 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:56,579 INFO L146 ILogger]: Analyzing trace with hash -193301335, now seen corresponding path program 1 times [2019-05-23 11:17:56,581 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:56,582 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:56,631 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:56,631 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:56,631 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:56,671 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:56,715 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 11:17:56,717 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:56,718 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:17:56,723 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:17:56,733 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:17:56,734 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:17:56,736 INFO L146 ILogger]: Start difference. First operand 51 states. Second operand 2 states. [2019-05-23 11:17:56,753 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:56,753 INFO L146 ILogger]: Finished difference Result 89 states and 103 transitions. [2019-05-23 11:17:56,753 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:17:56,754 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 24 [2019-05-23 11:17:56,755 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:56,763 INFO L146 ILogger]: With dead ends: 89 [2019-05-23 11:17:56,763 INFO L146 ILogger]: Without dead ends: 43 [2019-05-23 11:17:56,767 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 11:17:56,785 INFO L146 ILogger]: Start minimizeSevpa. Operand 43 states. [2019-05-23 11:17:56,804 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-05-23 11:17:56,806 INFO L146 ILogger]: Start removeUnreachable. Operand 43 states. [2019-05-23 11:17:56,807 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-05-23 11:17:56,810 INFO L146 ILogger]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 24 [2019-05-23 11:17:56,810 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:56,811 INFO L146 ILogger]: Abstraction has 43 states and 46 transitions. [2019-05-23 11:17:56,811 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:17:56,811 INFO L146 ILogger]: Start isEmpty. Operand 43 states and 46 transitions. [2019-05-23 11:17:56,812 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:17:56,812 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:56,812 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:56,813 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:56,813 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:56,813 INFO L146 ILogger]: Analyzing trace with hash -1613211244, now seen corresponding path program 1 times [2019-05-23 11:17:56,814 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:56,814 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:56,815 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:56,815 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:56,815 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:56,830 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:56,914 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:56,914 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:56,915 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:17:56,916 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:17:56,917 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:17:56,917 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:17:56,917 INFO L146 ILogger]: Start difference. First operand 43 states and 46 transitions. Second operand 3 states. [2019-05-23 11:17:57,177 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:57,177 INFO L146 ILogger]: Finished difference Result 88 states and 96 transitions. [2019-05-23 11:17:57,178 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:17:57,178 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 24 [2019-05-23 11:17:57,178 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:57,179 INFO L146 ILogger]: With dead ends: 88 [2019-05-23 11:17:57,180 INFO L146 ILogger]: Without dead ends: 58 [2019-05-23 11:17:57,181 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 11:17:57,181 INFO L146 ILogger]: Start minimizeSevpa. Operand 58 states. [2019-05-23 11:17:57,187 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 58 to 46. [2019-05-23 11:17:57,187 INFO L146 ILogger]: Start removeUnreachable. Operand 46 states. [2019-05-23 11:17:57,188 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2019-05-23 11:17:57,189 INFO L146 ILogger]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 24 [2019-05-23 11:17:57,189 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:57,189 INFO L146 ILogger]: Abstraction has 46 states and 49 transitions. [2019-05-23 11:17:57,189 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:17:57,190 INFO L146 ILogger]: Start isEmpty. Operand 46 states and 49 transitions. [2019-05-23 11:17:57,191 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:17:57,191 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:57,191 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:57,192 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:57,192 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:57,192 INFO L146 ILogger]: Analyzing trace with hash 580836725, now seen corresponding path program 1 times [2019-05-23 11:17:57,193 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:57,193 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:57,194 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,194 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:57,195 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,216 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:57,315 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:17:57,315 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:57,315 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 11:17:57,330 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:57,369 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:57,371 INFO L146 ILogger]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:17:57,377 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:57,456 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:17:57,480 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:57,480 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-05-23 11:17:57,481 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:17:57,481 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:17:57,481 INFO L146 ILogger]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:17:57,482 INFO L146 ILogger]: Start difference. First operand 46 states and 49 transitions. Second operand 6 states. [2019-05-23 11:17:57,941 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:57,944 INFO L146 ILogger]: Finished difference Result 100 states and 107 transitions. [2019-05-23 11:17:57,949 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:17:57,949 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 41 [2019-05-23 11:17:57,949 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:57,951 INFO L146 ILogger]: With dead ends: 100 [2019-05-23 11:17:57,951 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:17:57,954 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:17:57,955 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:17:57,965 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 56. [2019-05-23 11:17:57,965 INFO L146 ILogger]: Start removeUnreachable. Operand 56 states. [2019-05-23 11:17:57,968 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2019-05-23 11:17:57,969 INFO L146 ILogger]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 41 [2019-05-23 11:17:57,969 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:57,969 INFO L146 ILogger]: Abstraction has 56 states and 59 transitions. [2019-05-23 11:17:57,969 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:17:57,970 INFO L146 ILogger]: Start isEmpty. Operand 56 states and 59 transitions. [2019-05-23 11:17:57,973 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 52 [2019-05-23 11:17:57,973 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:57,973 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:57,974 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:57,974 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:57,974 INFO L146 ILogger]: Analyzing trace with hash -319135722, now seen corresponding path program 2 times [2019-05-23 11:17:57,974 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:57,975 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:57,976 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,977 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:57,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:58,003 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:58,126 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:17:58,127 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:58,127 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 11:17:58,146 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:58,219 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:58,219 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:58,220 INFO L146 ILogger]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:58,223 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:58,264 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:17:58,294 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:58,294 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:58,295 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:58,295 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:58,296 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:58,296 INFO L146 ILogger]: Start difference. First operand 56 states and 59 transitions. Second operand 7 states. [2019-05-23 11:17:58,814 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:58,814 INFO L146 ILogger]: Finished difference Result 112 states and 119 transitions. [2019-05-23 11:17:58,820 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:17:58,821 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 51 [2019-05-23 11:17:58,821 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:58,822 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:17:58,822 INFO L146 ILogger]: Without dead ends: 73 [2019-05-23 11:17:58,823 INFO L146 ILogger]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:17:58,823 INFO L146 ILogger]: Start minimizeSevpa. Operand 73 states. [2019-05-23 11:17:58,829 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 73 to 66. [2019-05-23 11:17:58,829 INFO L146 ILogger]: Start removeUnreachable. Operand 66 states. [2019-05-23 11:17:58,830 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2019-05-23 11:17:58,830 INFO L146 ILogger]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 51 [2019-05-23 11:17:58,831 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:58,831 INFO L146 ILogger]: Abstraction has 66 states and 69 transitions. [2019-05-23 11:17:58,831 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:17:58,831 INFO L146 ILogger]: Start isEmpty. Operand 66 states and 69 transitions. [2019-05-23 11:17:58,833 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 62 [2019-05-23 11:17:58,833 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:58,833 INFO L146 ILogger]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:58,833 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:58,834 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:58,834 INFO L146 ILogger]: Analyzing trace with hash -1835606084, now seen corresponding path program 3 times [2019-05-23 11:17:58,834 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:58,834 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:58,835 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:58,835 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:58,836 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:58,859 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,002 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:17:59,003 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:59,003 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 11:17:59,012 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:59,043 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:17:59,043 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,044 INFO L146 ILogger]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:59,049 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:59,129 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:17:59,149 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:59,149 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-05-23 11:17:59,149 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:17:59,150 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:17:59,151 INFO L146 ILogger]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:17:59,151 INFO L146 ILogger]: Start difference. First operand 66 states and 69 transitions. Second operand 10 states. [2019-05-23 11:17:59,491 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:59,491 INFO L146 ILogger]: Finished difference Result 122 states and 128 transitions. [2019-05-23 11:17:59,493 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:17:59,493 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 61 [2019-05-23 11:17:59,494 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:59,494 INFO L146 ILogger]: With dead ends: 122 [2019-05-23 11:17:59,495 INFO L146 ILogger]: Without dead ends: 92 [2019-05-23 11:17:59,497 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:17:59,497 INFO L146 ILogger]: Start minimizeSevpa. Operand 92 states. [2019-05-23 11:17:59,507 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 92 to 80. [2019-05-23 11:17:59,507 INFO L146 ILogger]: Start removeUnreachable. Operand 80 states. [2019-05-23 11:17:59,510 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2019-05-23 11:17:59,510 INFO L146 ILogger]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 61 [2019-05-23 11:17:59,511 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:59,512 INFO L146 ILogger]: Abstraction has 80 states and 83 transitions. [2019-05-23 11:17:59,512 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:17:59,512 INFO L146 ILogger]: Start isEmpty. Operand 80 states and 83 transitions. [2019-05-23 11:17:59,514 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:17:59,516 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:59,516 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:59,516 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:59,517 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:59,517 INFO L146 ILogger]: Analyzing trace with hash 685782101, now seen corresponding path program 4 times [2019-05-23 11:17:59,517 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:59,518 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:59,519 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:59,519 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:59,520 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:59,586 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,928 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:17:59,929 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:59,929 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 11:17:59,941 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:59,992 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:59,992 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,993 INFO L146 ILogger]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:17:59,997 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:00,043 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:18:00,062 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:00,063 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2019-05-23 11:18:00,063 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:18:00,063 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:18:00,064 INFO L146 ILogger]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:18:00,064 INFO L146 ILogger]: Start difference. First operand 80 states and 83 transitions. Second operand 10 states. [2019-05-23 11:18:00,346 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:00,347 INFO L146 ILogger]: Finished difference Result 157 states and 164 transitions. [2019-05-23 11:18:00,347 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:18:00,347 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 75 [2019-05-23 11:18:00,347 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:00,348 INFO L146 ILogger]: With dead ends: 157 [2019-05-23 11:18:00,348 INFO L146 ILogger]: Without dead ends: 97 [2019-05-23 11:18:00,349 INFO L146 ILogger]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:18:00,350 INFO L146 ILogger]: Start minimizeSevpa. Operand 97 states. [2019-05-23 11:18:00,357 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 97 to 90. [2019-05-23 11:18:00,357 INFO L146 ILogger]: Start removeUnreachable. Operand 90 states. [2019-05-23 11:18:00,360 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2019-05-23 11:18:00,360 INFO L146 ILogger]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 75 [2019-05-23 11:18:00,360 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:00,360 INFO L146 ILogger]: Abstraction has 90 states and 93 transitions. [2019-05-23 11:18:00,360 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:18:00,361 INFO L146 ILogger]: Start isEmpty. Operand 90 states and 93 transitions. [2019-05-23 11:18:00,361 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:18:00,361 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:00,362 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:00,362 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:00,363 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:00,363 INFO L146 ILogger]: Analyzing trace with hash 790571894, now seen corresponding path program 5 times [2019-05-23 11:18:00,363 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:00,363 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:00,364 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:00,364 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:00,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:00,412 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:00,915 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:18:00,915 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:00,915 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 11:18:00,925 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:01,084 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:18:01,084 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,086 INFO L146 ILogger]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:18:01,089 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:01,178 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-05-23 11:18:01,198 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:01,198 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2019-05-23 11:18:01,198 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:18:01,199 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:18:01,199 INFO L146 ILogger]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:18:01,199 INFO L146 ILogger]: Start difference. First operand 90 states and 93 transitions. Second operand 15 states. [2019-05-23 11:18:01,650 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:01,650 INFO L146 ILogger]: Finished difference Result 186 states and 194 transitions. [2019-05-23 11:18:01,650 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:18:01,650 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 85 [2019-05-23 11:18:01,651 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:01,651 INFO L146 ILogger]: With dead ends: 186 [2019-05-23 11:18:01,652 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:18:01,653 INFO L146 ILogger]: 0 DeclaredPredicates, 109 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:18:01,653 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:18:01,660 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 107. [2019-05-23 11:18:01,660 INFO L146 ILogger]: Start removeUnreachable. Operand 107 states. [2019-05-23 11:18:01,661 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2019-05-23 11:18:01,661 INFO L146 ILogger]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 85 [2019-05-23 11:18:01,662 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:01,662 INFO L146 ILogger]: Abstraction has 107 states and 110 transitions. [2019-05-23 11:18:01,662 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:18:01,662 INFO L146 ILogger]: Start isEmpty. Operand 107 states and 110 transitions. [2019-05-23 11:18:01,665 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 103 [2019-05-23 11:18:01,666 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:01,666 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:01,666 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:01,666 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:01,667 INFO L146 ILogger]: Analyzing trace with hash 1761592885, now seen corresponding path program 6 times [2019-05-23 11:18:01,667 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:01,667 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:01,668 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,668 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:01,668 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,688 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,912 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:18:01,912 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:01,912 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 11:18:01,925 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:01,988 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-05-23 11:18:01,988 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,989 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:18:01,994 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:02,027 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:18:02,052 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:02,052 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 14 [2019-05-23 11:18:02,053 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:18:02,053 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:18:02,053 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:18:02,054 INFO L146 ILogger]: Start difference. First operand 107 states and 110 transitions. Second operand 14 states. [2019-05-23 11:18:02,507 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:02,508 INFO L146 ILogger]: Finished difference Result 205 states and 212 transitions. [2019-05-23 11:18:02,515 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:18:02,515 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 102 [2019-05-23 11:18:02,515 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:02,516 INFO L146 ILogger]: With dead ends: 205 [2019-05-23 11:18:02,516 INFO L146 ILogger]: Without dead ends: 124 [2019-05-23 11:18:02,517 INFO L146 ILogger]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:18:02,521 INFO L146 ILogger]: Start minimizeSevpa. Operand 124 states. [2019-05-23 11:18:02,532 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 124 to 117. [2019-05-23 11:18:02,532 INFO L146 ILogger]: Start removeUnreachable. Operand 117 states. [2019-05-23 11:18:02,535 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2019-05-23 11:18:02,536 INFO L146 ILogger]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 102 [2019-05-23 11:18:02,536 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:02,536 INFO L146 ILogger]: Abstraction has 117 states and 120 transitions. [2019-05-23 11:18:02,536 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:18:02,536 INFO L146 ILogger]: Start isEmpty. Operand 117 states and 120 transitions. [2019-05-23 11:18:02,541 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:18:02,541 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:02,541 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:02,542 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:02,542 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:02,542 INFO L146 ILogger]: Analyzing trace with hash -1420132940, now seen corresponding path program 7 times [2019-05-23 11:18:02,542 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:02,542 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:02,545 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,546 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:02,546 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,588 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,795 INFO L146 ILogger]: Checked inductivity of 208 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-05-23 11:18:02,795 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:02,796 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 11:18:02,804 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:02,831 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,832 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:18:02,835 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:02,884 INFO L146 ILogger]: Checked inductivity of 208 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-05-23 11:18:02,906 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:02,907 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 16 [2019-05-23 11:18:02,907 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:18:02,908 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:18:02,908 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:18:02,908 INFO L146 ILogger]: Start difference. First operand 117 states and 120 transitions. Second operand 16 states. [2019-05-23 11:18:03,442 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:03,443 INFO L146 ILogger]: Finished difference Result 222 states and 229 transitions. [2019-05-23 11:18:03,443 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:18:03,443 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 112 [2019-05-23 11:18:03,443 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:03,444 INFO L146 ILogger]: With dead ends: 222 [2019-05-23 11:18:03,444 INFO L146 ILogger]: Without dead ends: 134 [2019-05-23 11:18:03,445 INFO L146 ILogger]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:18:03,446 INFO L146 ILogger]: Start minimizeSevpa. Operand 134 states. [2019-05-23 11:18:03,450 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 134 to 127. [2019-05-23 11:18:03,451 INFO L146 ILogger]: Start removeUnreachable. Operand 127 states. [2019-05-23 11:18:03,451 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 127 states to 127 states and 130 transitions. [2019-05-23 11:18:03,452 INFO L146 ILogger]: Start accepts. Automaton has 127 states and 130 transitions. Word has length 112 [2019-05-23 11:18:03,452 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:03,452 INFO L146 ILogger]: Abstraction has 127 states and 130 transitions. [2019-05-23 11:18:03,452 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:18:03,452 INFO L146 ILogger]: Start isEmpty. Operand 127 states and 130 transitions. [2019-05-23 11:18:03,453 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 123 [2019-05-23 11:18:03,453 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:03,454 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:03,454 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:03,454 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:03,454 INFO L146 ILogger]: Analyzing trace with hash 342405973, now seen corresponding path program 8 times [2019-05-23 11:18:03,455 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:03,455 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:03,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:03,456 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:03,456 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:03,489 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,733 INFO L146 ILogger]: Checked inductivity of 270 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:18:03,734 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:03,734 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 11:18:03,745 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:03,774 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:03,774 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,775 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:18:03,778 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:03,803 INFO L146 ILogger]: Checked inductivity of 270 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-05-23 11:18:03,822 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:03,822 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 18 [2019-05-23 11:18:03,823 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:18:03,823 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:18:03,823 INFO L146 ILogger]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:18:03,823 INFO L146 ILogger]: Start difference. First operand 127 states and 130 transitions. Second operand 18 states. [2019-05-23 11:18:04,405 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:04,405 INFO L146 ILogger]: Finished difference Result 239 states and 246 transitions. [2019-05-23 11:18:04,405 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:18:04,406 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 122 [2019-05-23 11:18:04,406 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:04,407 INFO L146 ILogger]: With dead ends: 239 [2019-05-23 11:18:04,407 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:18:04,408 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=663, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:18:04,409 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:18:04,414 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 137. [2019-05-23 11:18:04,415 INFO L146 ILogger]: Start removeUnreachable. Operand 137 states. [2019-05-23 11:18:04,415 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2019-05-23 11:18:04,415 INFO L146 ILogger]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 122 [2019-05-23 11:18:04,416 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:04,416 INFO L146 ILogger]: Abstraction has 137 states and 140 transitions. [2019-05-23 11:18:04,416 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:18:04,416 INFO L146 ILogger]: Start isEmpty. Operand 137 states and 140 transitions. [2019-05-23 11:18:04,417 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:18:04,417 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:04,418 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:04,418 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:04,418 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:04,418 INFO L146 ILogger]: Analyzing trace with hash -1795350380, now seen corresponding path program 9 times [2019-05-23 11:18:04,419 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:04,419 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:04,419 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,420 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:04,420 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,439 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,652 INFO L146 ILogger]: Checked inductivity of 342 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:18:04,653 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:04,653 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 11:18:04,662 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:04,714 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:18:04,715 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,716 INFO L146 ILogger]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:18:04,719 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:04,814 INFO L146 ILogger]: Checked inductivity of 342 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2019-05-23 11:18:04,832 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:04,833 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 24 [2019-05-23 11:18:04,833 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:18:04,833 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:18:04,834 INFO L146 ILogger]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:18:04,834 INFO L146 ILogger]: Start difference. First operand 137 states and 140 transitions. Second operand 24 states. [2019-05-23 11:18:05,503 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:05,504 INFO L146 ILogger]: Finished difference Result 268 states and 276 transitions. [2019-05-23 11:18:05,504 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:18:05,504 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 132 [2019-05-23 11:18:05,505 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:05,506 INFO L146 ILogger]: With dead ends: 268 [2019-05-23 11:18:05,506 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:18:05,507 INFO L146 ILogger]: 0 DeclaredPredicates, 174 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=550, Invalid=1706, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:18:05,508 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:18:05,512 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 154. [2019-05-23 11:18:05,512 INFO L146 ILogger]: Start removeUnreachable. Operand 154 states. [2019-05-23 11:18:05,513 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 154 states to 154 states and 157 transitions. [2019-05-23 11:18:05,513 INFO L146 ILogger]: Start accepts. Automaton has 154 states and 157 transitions. Word has length 132 [2019-05-23 11:18:05,513 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:05,514 INFO L146 ILogger]: Abstraction has 154 states and 157 transitions. [2019-05-23 11:18:05,514 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:18:05,514 INFO L146 ILogger]: Start isEmpty. Operand 154 states and 157 transitions. [2019-05-23 11:18:05,514 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 150 [2019-05-23 11:18:05,515 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:05,515 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:05,515 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:05,515 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:05,515 INFO L146 ILogger]: Analyzing trace with hash -363951883, now seen corresponding path program 10 times [2019-05-23 11:18:05,516 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:05,516 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:05,517 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:05,517 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:05,517 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:05,538 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,794 INFO L146 ILogger]: Checked inductivity of 453 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-05-23 11:18:05,794 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:05,794 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:18:05,803 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:05,872 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:05,872 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,873 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:18:05,875 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:05,910 INFO L146 ILogger]: Checked inductivity of 453 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2019-05-23 11:18:05,930 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:05,930 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 22 [2019-05-23 11:18:05,931 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:18:05,931 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:18:05,932 INFO L146 ILogger]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:18:05,932 INFO L146 ILogger]: Start difference. First operand 154 states and 157 transitions. Second operand 22 states. [2019-05-23 11:18:06,564 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:06,568 INFO L146 ILogger]: Finished difference Result 287 states and 294 transitions. [2019-05-23 11:18:06,571 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:18:06,571 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 149 [2019-05-23 11:18:06,571 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:06,572 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:18:06,572 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:18:06,573 INFO L146 ILogger]: 0 DeclaredPredicates, 187 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=511, Invalid=1049, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:18:06,577 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:18:06,580 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 164. [2019-05-23 11:18:06,580 INFO L146 ILogger]: Start removeUnreachable. Operand 164 states. [2019-05-23 11:18:06,581 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2019-05-23 11:18:06,581 INFO L146 ILogger]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 149 [2019-05-23 11:18:06,581 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:06,582 INFO L146 ILogger]: Abstraction has 164 states and 167 transitions. [2019-05-23 11:18:06,582 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:18:06,582 INFO L146 ILogger]: Start isEmpty. Operand 164 states and 167 transitions. [2019-05-23 11:18:06,583 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 160 [2019-05-23 11:18:06,583 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:06,583 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:06,583 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:06,583 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:06,584 INFO L146 ILogger]: Analyzing trace with hash -1325078250, now seen corresponding path program 11 times [2019-05-23 11:18:06,584 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:06,584 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:06,585 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,585 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:06,585 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,603 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,439 INFO L146 ILogger]: Checked inductivity of 545 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-05-23 11:18:07,440 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:07,440 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 11:18:07,449 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:13,429 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:18:13,429 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:13,438 INFO L146 ILogger]: Trace formula consists of 243 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:18:13,440 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:13,544 INFO L146 ILogger]: Checked inductivity of 545 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2019-05-23 11:18:13,565 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:13,566 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 24 [2019-05-23 11:18:13,566 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:18:13,566 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:18:13,567 INFO L146 ILogger]: CoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:18:13,567 INFO L146 ILogger]: Start difference. First operand 164 states and 167 transitions. Second operand 24 states. [2019-05-23 11:18:14,278 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:14,278 INFO L146 ILogger]: Finished difference Result 304 states and 311 transitions. [2019-05-23 11:18:14,281 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:18:14,281 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 159 [2019-05-23 11:18:14,281 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:14,283 INFO L146 ILogger]: With dead ends: 304 [2019-05-23 11:18:14,283 INFO L146 ILogger]: Without dead ends: 181 [2019-05-23 11:18:14,284 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=617, Invalid=1275, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:18:14,285 INFO L146 ILogger]: Start minimizeSevpa. Operand 181 states. [2019-05-23 11:18:14,288 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 181 to 174. [2019-05-23 11:18:14,288 INFO L146 ILogger]: Start removeUnreachable. Operand 174 states. [2019-05-23 11:18:14,289 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2019-05-23 11:18:14,289 INFO L146 ILogger]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 159 [2019-05-23 11:18:14,290 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:14,290 INFO L146 ILogger]: Abstraction has 174 states and 177 transitions. [2019-05-23 11:18:14,290 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:18:14,290 INFO L146 ILogger]: Start isEmpty. Operand 174 states and 177 transitions. [2019-05-23 11:18:14,291 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 170 [2019-05-23 11:18:14,291 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:14,291 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:14,291 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:14,292 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:14,292 INFO L146 ILogger]: Analyzing trace with hash -18053163, now seen corresponding path program 12 times [2019-05-23 11:18:14,292 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:14,292 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:14,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:14,293 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:14,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:14,311 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:15,314 INFO L146 ILogger]: Checked inductivity of 647 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2019-05-23 11:18:15,314 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:15,314 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:18:15,324 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:17,178 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:18:17,179 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:17,183 INFO L146 ILogger]: Trace formula consists of 243 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:18:17,186 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:17,520 INFO L146 ILogger]: Checked inductivity of 647 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2019-05-23 11:18:17,541 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:17,541 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 33 [2019-05-23 11:18:17,542 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:18:17,542 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:18:17,542 INFO L146 ILogger]: CoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:18:17,543 INFO L146 ILogger]: Start difference. First operand 174 states and 177 transitions. Second operand 33 states. [2019-05-23 11:18:18,433 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:18,434 INFO L146 ILogger]: Finished difference Result 334 states and 343 transitions. [2019-05-23 11:18:18,434 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:18:18,434 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 169 [2019-05-23 11:18:18,435 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:18,436 INFO L146 ILogger]: With dead ends: 334 [2019-05-23 11:18:18,436 INFO L146 ILogger]: Without dead ends: 204 [2019-05-23 11:18:18,437 INFO L146 ILogger]: 0 DeclaredPredicates, 225 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1039, Invalid=3121, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:18:18,438 INFO L146 ILogger]: Start minimizeSevpa. Operand 204 states. [2019-05-23 11:18:18,441 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 204 to 194. [2019-05-23 11:18:18,441 INFO L146 ILogger]: Start removeUnreachable. Operand 194 states. [2019-05-23 11:18:18,442 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2019-05-23 11:18:18,442 INFO L146 ILogger]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 169 [2019-05-23 11:18:18,442 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:18,442 INFO L146 ILogger]: Abstraction has 194 states and 197 transitions. [2019-05-23 11:18:18,442 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:18:18,443 INFO L146 ILogger]: Start isEmpty. Operand 194 states and 197 transitions. [2019-05-23 11:18:18,443 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 190 [2019-05-23 11:18:18,444 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:18,444 INFO L146 ILogger]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:18,444 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:18,444 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:18,444 INFO L146 ILogger]: Analyzing trace with hash 534364572, now seen corresponding path program 13 times [2019-05-23 11:18:18,445 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:18,445 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:18,445 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:18,446 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:18,446 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:18,466 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:19,237 INFO L146 ILogger]: Checked inductivity of 832 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2019-05-23 11:18:19,237 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:19,237 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 11:18:19,246 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:19,292 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:19,293 INFO L146 ILogger]: Trace formula consists of 285 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:18:19,296 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:19,421 INFO L146 ILogger]: Checked inductivity of 832 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2019-05-23 11:18:19,445 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:19,446 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16] total 29 [2019-05-23 11:18:19,446 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:18:19,447 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:18:19,447 INFO L146 ILogger]: CoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:18:19,447 INFO L146 ILogger]: Start difference. First operand 194 states and 197 transitions. Second operand 29 states. [2019-05-23 11:18:20,709 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:20,709 INFO L146 ILogger]: Finished difference Result 355 states and 362 transitions. [2019-05-23 11:18:20,710 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:18:20,710 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 189 [2019-05-23 11:18:20,711 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:20,712 INFO L146 ILogger]: With dead ends: 355 [2019-05-23 11:18:20,712 INFO L146 ILogger]: Without dead ends: 211 [2019-05-23 11:18:20,714 INFO L146 ILogger]: 0 DeclaredPredicates, 239 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=899, Invalid=1857, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:18:20,715 INFO L146 ILogger]: Start minimizeSevpa. Operand 211 states. [2019-05-23 11:18:20,720 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 211 to 204. [2019-05-23 11:18:20,720 INFO L146 ILogger]: Start removeUnreachable. Operand 204 states. [2019-05-23 11:18:20,721 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions. [2019-05-23 11:18:20,721 INFO L146 ILogger]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 189 [2019-05-23 11:18:20,721 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:20,721 INFO L146 ILogger]: Abstraction has 204 states and 207 transitions. [2019-05-23 11:18:20,722 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:18:20,722 INFO L146 ILogger]: Start isEmpty. Operand 204 states and 207 transitions. [2019-05-23 11:18:20,723 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 200 [2019-05-23 11:18:20,723 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:20,723 INFO L146 ILogger]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:20,724 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:20,724 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:20,724 INFO L146 ILogger]: Analyzing trace with hash 1605637693, now seen corresponding path program 14 times [2019-05-23 11:18:20,724 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:20,725 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:20,725 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:20,726 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:20,726 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:20,750 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:21,216 INFO L146 ILogger]: Checked inductivity of 957 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2019-05-23 11:18:21,216 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:21,216 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 11:18:21,225 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:21,272 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:21,272 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:21,273 INFO L146 ILogger]: Trace formula consists of 299 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:18:21,275 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:21,372 INFO L146 ILogger]: Checked inductivity of 957 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2019-05-23 11:18:21,391 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:21,391 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 17] total 31 [2019-05-23 11:18:21,392 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:18:21,392 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:18:21,393 INFO L146 ILogger]: CoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:18:21,393 INFO L146 ILogger]: Start difference. First operand 204 states and 207 transitions. Second operand 31 states. [2019-05-23 11:18:22,161 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:22,162 INFO L146 ILogger]: Finished difference Result 372 states and 379 transitions. [2019-05-23 11:18:22,163 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:18:22,163 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 199 [2019-05-23 11:18:22,163 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:22,165 INFO L146 ILogger]: With dead ends: 372 [2019-05-23 11:18:22,165 INFO L146 ILogger]: Without dead ends: 221 [2019-05-23 11:18:22,167 INFO L146 ILogger]: 0 DeclaredPredicates, 253 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1038, Invalid=2154, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:18:22,167 INFO L146 ILogger]: Start minimizeSevpa. Operand 221 states. [2019-05-23 11:18:22,171 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 221 to 214. [2019-05-23 11:18:22,171 INFO L146 ILogger]: Start removeUnreachable. Operand 214 states. [2019-05-23 11:18:22,172 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 214 states to 214 states and 217 transitions. [2019-05-23 11:18:22,172 INFO L146 ILogger]: Start accepts. Automaton has 214 states and 217 transitions. Word has length 199 [2019-05-23 11:18:22,173 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:22,173 INFO L146 ILogger]: Abstraction has 214 states and 217 transitions. [2019-05-23 11:18:22,173 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:18:22,173 INFO L146 ILogger]: Start isEmpty. Operand 214 states and 217 transitions. [2019-05-23 11:18:22,174 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 210 [2019-05-23 11:18:22,174 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:22,174 INFO L146 ILogger]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:22,175 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:22,175 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:22,175 INFO L146 ILogger]: Analyzing trace with hash -1870286724, now seen corresponding path program 15 times [2019-05-23 11:18:22,175 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:22,175 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:22,176 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:22,176 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:22,176 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:22,200 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:22,953 INFO L146 ILogger]: Checked inductivity of 1092 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2019-05-23 11:18:22,954 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:22,954 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 11:18:22,962 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:23,305 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:18:23,306 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:23,308 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:18:23,310 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:23,480 INFO L146 ILogger]: Checked inductivity of 1092 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2019-05-23 11:18:23,501 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:23,502 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 38 [2019-05-23 11:18:23,502 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:18:23,502 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:18:23,503 INFO L146 ILogger]: CoverageRelationStatistics Valid=299, Invalid=1107, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:18:23,503 INFO L146 ILogger]: Start difference. First operand 214 states and 217 transitions. Second operand 38 states. [2019-05-23 11:18:25,889 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:25,890 INFO L146 ILogger]: Finished difference Result 298 states and 304 transitions. [2019-05-23 11:18:25,890 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:18:25,890 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 209 [2019-05-23 11:18:25,891 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:25,892 INFO L146 ILogger]: With dead ends: 298 [2019-05-23 11:18:25,892 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:18:25,894 INFO L146 ILogger]: 0 DeclaredPredicates, 279 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1445, Invalid=4561, Unknown=0, NotChecked=0, Total=6006 [2019-05-23 11:18:25,895 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:18:25,897 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 228. [2019-05-23 11:18:25,898 INFO L146 ILogger]: Start removeUnreachable. Operand 228 states. [2019-05-23 11:18:25,898 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 228 states to 228 states and 231 transitions. [2019-05-23 11:18:25,898 INFO L146 ILogger]: Start accepts. Automaton has 228 states and 231 transitions. Word has length 209 [2019-05-23 11:18:25,899 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:25,899 INFO L146 ILogger]: Abstraction has 228 states and 231 transitions. [2019-05-23 11:18:25,899 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:18:25,899 INFO L146 ILogger]: Start isEmpty. Operand 228 states and 231 transitions. [2019-05-23 11:18:25,900 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 224 [2019-05-23 11:18:25,900 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:25,900 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:25,900 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:25,900 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:25,901 INFO L146 ILogger]: Analyzing trace with hash 997287317, now seen corresponding path program 16 times [2019-05-23 11:18:25,901 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:25,901 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:25,901 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:25,901 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:25,902 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:25,923 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:26,355 INFO L146 ILogger]: Checked inductivity of 1234 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2019-05-23 11:18:26,355 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:26,355 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 11:18:26,364 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:26,657 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:26,658 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:26,660 INFO L146 ILogger]: Trace formula consists of 333 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:18:26,662 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:26,697 INFO L146 ILogger]: Checked inductivity of 1234 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked. [2019-05-23 11:18:26,716 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:26,717 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 18] total 34 [2019-05-23 11:18:26,717 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:18:26,717 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:18:26,718 INFO L146 ILogger]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:18:26,718 INFO L146 ILogger]: Start difference. First operand 228 states and 231 transitions. Second operand 34 states. [2019-05-23 11:18:27,502 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:27,502 INFO L146 ILogger]: Finished difference Result 417 states and 424 transitions. [2019-05-23 11:18:27,502 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:18:27,503 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 223 [2019-05-23 11:18:27,503 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:27,504 INFO L146 ILogger]: With dead ends: 417 [2019-05-23 11:18:27,504 INFO L146 ILogger]: Without dead ends: 245 [2019-05-23 11:18:27,507 INFO L146 ILogger]: 0 DeclaredPredicates, 285 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1297, Invalid=2735, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:18:27,507 INFO L146 ILogger]: Start minimizeSevpa. Operand 245 states. [2019-05-23 11:18:27,510 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 245 to 238. [2019-05-23 11:18:27,511 INFO L146 ILogger]: Start removeUnreachable. Operand 238 states. [2019-05-23 11:18:27,511 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 238 states to 238 states and 241 transitions. [2019-05-23 11:18:27,511 INFO L146 ILogger]: Start accepts. Automaton has 238 states and 241 transitions. Word has length 223 [2019-05-23 11:18:27,512 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:27,512 INFO L146 ILogger]: Abstraction has 238 states and 241 transitions. [2019-05-23 11:18:27,512 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:18:27,512 INFO L146 ILogger]: Start isEmpty. Operand 238 states and 241 transitions. [2019-05-23 11:18:27,513 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 234 [2019-05-23 11:18:27,513 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:27,513 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:27,514 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:27,514 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:27,514 INFO L146 ILogger]: Analyzing trace with hash -666882378, now seen corresponding path program 17 times [2019-05-23 11:18:27,514 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:27,514 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:27,515 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:27,515 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:27,515 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:27,538 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:28,133 INFO L146 ILogger]: Checked inductivity of 1386 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2019-05-23 11:18:28,133 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:28,133 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 11:18:28,143 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1