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/sorting_selectionsort_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:46,409 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:46,411 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:46,423 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:46,424 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:46,425 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:46,426 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:46,429 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:46,431 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:46,432 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:46,433 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:46,433 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:46,434 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:46,436 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:46,437 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:46,438 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:46,439 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:46,441 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:46,444 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:46,446 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:46,448 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:46,449 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:46,452 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:16:46,452 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:16:46,453 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:16:46,454 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:16:46,454 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:16:46,456 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:16:46,456 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:16:46,457 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:16:46,458 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:16:46,459 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:16:46,461 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:16:46,461 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:46,462 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:46,462 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:46,463 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:46,464 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:46,465 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:46,465 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:46,481 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:46,482 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:46,483 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:46,483 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:46,483 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:46,484 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:46,484 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:46,484 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:46,484 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:46,485 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:46,485 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:46,485 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:46,485 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:46,485 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:46,486 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:46,486 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:46,486 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:46,486 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:46,486 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:46,487 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:46,487 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:46,487 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:46,487 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:46,488 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:46,488 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:46,488 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:46,488 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:46,488 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:46,489 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 11:16:46,524 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:46,537 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:46,541 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:46,542 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:46,543 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:46,544 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/sorting_selectionsort_true-unreach-call_ground.i [2019-05-23 11:16:46,609 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cddcce76/e83a689386d1418aa3c12e8ef2908b97/FLAGea21ca4db [2019-05-23 11:16:47,040 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:47,041 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/sorting_selectionsort_true-unreach-call_ground.i [2019-05-23 11:16:47,049 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cddcce76/e83a689386d1418aa3c12e8ef2908b97/FLAGea21ca4db [2019-05-23 11:16:47,411 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cddcce76/e83a689386d1418aa3c12e8ef2908b97 [2019-05-23 11:16:47,422 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:47,424 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:47,425 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:47,425 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:47,429 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:47,430 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,433 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577feff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47, skipping insertion in model container [2019-05-23 11:16:47,434 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,441 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:47,460 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:47,651 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:47,655 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:47,684 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:47,708 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:47,709 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47 WrapperNode [2019-05-23 11:16:47,709 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:47,710 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:47,710 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:47,710 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:47,723 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,739 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,768 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:47,769 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:47,769 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:47,769 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:47,780 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,780 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,783 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,783 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,791 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,798 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,800 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (1/1) ... [2019-05-23 11:16:47,803 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:47,803 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:47,803 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:47,804 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:47,805 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:16:47,965 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:16:47,965 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:47,966 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:47,966 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:47,966 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:47,966 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:48,638 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:48,638 INFO L146 ILogger]: Removed 17 assume(true) statements. [2019-05-23 11:16:48,639 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:48 BoogieIcfgContainer [2019-05-23 11:16:48,640 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:48,641 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:48,641 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:48,644 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:48,644 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:47" (1/3) ... [2019-05-23 11:16:48,645 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c38b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:48, skipping insertion in model container [2019-05-23 11:16:48,646 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:47" (2/3) ... [2019-05-23 11:16:48,646 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c38b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:48, skipping insertion in model container [2019-05-23 11:16:48,646 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:48" (3/3) ... [2019-05-23 11:16:48,648 INFO L146 ILogger]: Analyzing ICFG sorting_selectionsort_true-unreach-call_ground.i [2019-05-23 11:16:48,658 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:48,667 INFO L146 ILogger]: Appying trace abstraction to program that has 3 error locations. [2019-05-23 11:16:48,685 INFO L146 ILogger]: Starting to check reachability of 3 error locations. [2019-05-23 11:16:48,718 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:48,718 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:48,719 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:48,719 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:48,720 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:48,720 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:48,720 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:48,721 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:48,721 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:48,739 INFO L146 ILogger]: Start isEmpty. Operand 91 states. [2019-05-23 11:16:48,747 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:16:48,747 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:48,748 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] [2019-05-23 11:16:48,750 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:48,755 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:48,756 INFO L146 ILogger]: Analyzing trace with hash -1562251155, now seen corresponding path program 1 times [2019-05-23 11:16:48,757 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:48,757 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:48,808 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:48,808 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:48,809 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:48,850 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:48,883 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 11:16:48,886 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:48,886 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:16:48,889 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:16:48,899 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:16:48,900 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:16:48,902 INFO L146 ILogger]: Start difference. First operand 91 states. Second operand 2 states. [2019-05-23 11:16:48,929 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:48,929 INFO L146 ILogger]: Finished difference Result 174 states and 210 transitions. [2019-05-23 11:16:48,929 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:16:48,931 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 20 [2019-05-23 11:16:48,931 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:48,942 INFO L146 ILogger]: With dead ends: 174 [2019-05-23 11:16:48,942 INFO L146 ILogger]: Without dead ends: 85 [2019-05-23 11:16:48,947 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 11:16:48,962 INFO L146 ILogger]: Start minimizeSevpa. Operand 85 states. [2019-05-23 11:16:48,981 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 85 to 85. [2019-05-23 11:16:48,982 INFO L146 ILogger]: Start removeUnreachable. Operand 85 states. [2019-05-23 11:16:48,984 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2019-05-23 11:16:48,985 INFO L146 ILogger]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 20 [2019-05-23 11:16:48,986 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:48,986 INFO L146 ILogger]: Abstraction has 85 states and 93 transitions. [2019-05-23 11:16:48,986 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:16:48,986 INFO L146 ILogger]: Start isEmpty. Operand 85 states and 93 transitions. [2019-05-23 11:16:48,987 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:16:48,988 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:48,988 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] [2019-05-23 11:16:48,988 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:48,989 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:48,989 INFO L146 ILogger]: Analyzing trace with hash -517721846, now seen corresponding path program 1 times [2019-05-23 11:16:48,989 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:48,989 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:48,990 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:48,991 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:48,991 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,003 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:49,064 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 11:16:49,064 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:49,065 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:49,066 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:49,067 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:49,067 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:49,067 INFO L146 ILogger]: Start difference. First operand 85 states and 93 transitions. Second operand 3 states. [2019-05-23 11:16:49,340 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:49,340 INFO L146 ILogger]: Finished difference Result 162 states and 178 transitions. [2019-05-23 11:16:49,341 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:49,341 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 20 [2019-05-23 11:16:49,341 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:49,343 INFO L146 ILogger]: With dead ends: 162 [2019-05-23 11:16:49,343 INFO L146 ILogger]: Without dead ends: 142 [2019-05-23 11:16:49,345 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 11:16:49,345 INFO L146 ILogger]: Start minimizeSevpa. Operand 142 states. [2019-05-23 11:16:49,354 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 142 to 86. [2019-05-23 11:16:49,354 INFO L146 ILogger]: Start removeUnreachable. Operand 86 states. [2019-05-23 11:16:49,356 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2019-05-23 11:16:49,356 INFO L146 ILogger]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 20 [2019-05-23 11:16:49,356 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:49,357 INFO L146 ILogger]: Abstraction has 86 states and 94 transitions. [2019-05-23 11:16:49,357 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:49,357 INFO L146 ILogger]: Start isEmpty. Operand 86 states and 94 transitions. [2019-05-23 11:16:49,358 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:16:49,358 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:49,358 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 11:16:49,359 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:49,359 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:49,359 INFO L146 ILogger]: Analyzing trace with hash 1597505245, now seen corresponding path program 1 times [2019-05-23 11:16:49,360 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:49,360 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:49,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,361 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:49,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:49,464 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 11:16:49,464 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:49,465 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:16:49,465 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:16:49,465 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:16:49,466 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:16:49,466 INFO L146 ILogger]: Start difference. First operand 86 states and 94 transitions. Second operand 4 states. [2019-05-23 11:16:49,699 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:49,699 INFO L146 ILogger]: Finished difference Result 229 states and 253 transitions. [2019-05-23 11:16:49,700 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:16:49,700 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 24 [2019-05-23 11:16:49,700 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:49,702 INFO L146 ILogger]: With dead ends: 229 [2019-05-23 11:16:49,702 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:16:49,703 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:16:49,703 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:16:49,711 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 89. [2019-05-23 11:16:49,711 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:16:49,712 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2019-05-23 11:16:49,712 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 24 [2019-05-23 11:16:49,713 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:49,713 INFO L146 ILogger]: Abstraction has 89 states and 97 transitions. [2019-05-23 11:16:49,713 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:16:49,713 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 97 transitions. [2019-05-23 11:16:49,714 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:16:49,714 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:49,715 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:49,715 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:49,715 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:49,715 INFO L146 ILogger]: Analyzing trace with hash 1496831639, now seen corresponding path program 1 times [2019-05-23 11:16:49,716 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:49,716 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:49,717 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,717 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:49,717 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,734 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:49,935 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:49,935 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:49,935 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 11:16:49,956 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:49,982 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:49,984 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:16:49,989 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:50,269 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:50,291 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:50,291 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-05-23 11:16:50,292 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:16:50,292 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:16:50,293 INFO L146 ILogger]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:16:50,293 INFO L146 ILogger]: Start difference. First operand 89 states and 97 transitions. Second operand 8 states. [2019-05-23 11:16:50,489 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:50,489 INFO L146 ILogger]: Finished difference Result 239 states and 264 transitions. [2019-05-23 11:16:50,490 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:16:50,490 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 31 [2019-05-23 11:16:50,491 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:50,492 INFO L146 ILogger]: With dead ends: 239 [2019-05-23 11:16:50,492 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:16:50,493 INFO L146 ILogger]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:16:50,494 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:16:50,502 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 99. [2019-05-23 11:16:50,502 INFO L146 ILogger]: Start removeUnreachable. Operand 99 states. [2019-05-23 11:16:50,504 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2019-05-23 11:16:50,504 INFO L146 ILogger]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 31 [2019-05-23 11:16:50,504 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:50,504 INFO L146 ILogger]: Abstraction has 99 states and 108 transitions. [2019-05-23 11:16:50,505 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:16:50,505 INFO L146 ILogger]: Start isEmpty. Operand 99 states and 108 transitions. [2019-05-23 11:16:50,506 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:16:50,506 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:50,506 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:50,507 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:50,507 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:50,507 INFO L146 ILogger]: Analyzing trace with hash -2002601571, now seen corresponding path program 2 times [2019-05-23 11:16:50,508 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:50,508 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:50,509 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:50,509 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:50,509 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:50,530 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:50,921 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:50,921 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:50,921 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 11:16:50,944 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:50,981 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-05-23 11:16:50,981 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:50,983 INFO L146 ILogger]: Trace formula consists of 47 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:16:50,985 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:51,217 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:16:51,218 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:51,227 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:51,227 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:51,228 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:16:51,284 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:16:51,314 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:16:51,315 INFO L146 ILogger]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2019-05-23 11:16:51,315 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:51,316 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:51,316 INFO L146 ILogger]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:51,316 INFO L146 ILogger]: Start difference. First operand 99 states and 108 transitions. Second operand 13 states. [2019-05-23 11:16:52,617 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:52,618 INFO L146 ILogger]: Finished difference Result 299 states and 335 transitions. [2019-05-23 11:16:52,618 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:16:52,618 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 38 [2019-05-23 11:16:52,619 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:52,621 INFO L146 ILogger]: With dead ends: 299 [2019-05-23 11:16:52,621 INFO L146 ILogger]: Without dead ends: 222 [2019-05-23 11:16:52,622 INFO L146 ILogger]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:16:52,623 INFO L146 ILogger]: Start minimizeSevpa. Operand 222 states. [2019-05-23 11:16:52,633 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 222 to 137. [2019-05-23 11:16:52,633 INFO L146 ILogger]: Start removeUnreachable. Operand 137 states. [2019-05-23 11:16:52,634 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2019-05-23 11:16:52,635 INFO L146 ILogger]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 38 [2019-05-23 11:16:52,635 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,635 INFO L146 ILogger]: Abstraction has 137 states and 150 transitions. [2019-05-23 11:16:52,635 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:16:52,635 INFO L146 ILogger]: Start isEmpty. Operand 137 states and 150 transitions. [2019-05-23 11:16:52,637 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:16:52,637 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,638 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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 11:16:52,638 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,638 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,638 INFO L146 ILogger]: Analyzing trace with hash -684425057, now seen corresponding path program 1 times [2019-05-23 11:16:52,639 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,639 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,640 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,640 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:52,640 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,656 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,779 INFO L146 ILogger]: Checked inductivity of 31 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:52,779 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:52,779 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 11:16:52,802 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,835 INFO L146 ILogger]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:52,837 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:52,982 INFO L146 ILogger]: Checked inductivity of 31 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:53,001 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:53,001 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-05-23 11:16:53,002 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:53,002 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:53,002 INFO L146 ILogger]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:53,002 INFO L146 ILogger]: Start difference. First operand 137 states and 150 transitions. Second operand 12 states. [2019-05-23 11:16:53,183 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,183 INFO L146 ILogger]: Finished difference Result 266 states and 292 transitions. [2019-05-23 11:16:53,183 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:16:53,183 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 57 [2019-05-23 11:16:53,184 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,185 INFO L146 ILogger]: With dead ends: 266 [2019-05-23 11:16:53,185 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:16:53,186 INFO L146 ILogger]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:53,187 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:16:53,194 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 147. [2019-05-23 11:16:53,194 INFO L146 ILogger]: Start removeUnreachable. Operand 147 states. [2019-05-23 11:16:53,195 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2019-05-23 11:16:53,196 INFO L146 ILogger]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 57 [2019-05-23 11:16:53,196 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,196 INFO L146 ILogger]: Abstraction has 147 states and 161 transitions. [2019-05-23 11:16:53,196 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:53,196 INFO L146 ILogger]: Start isEmpty. Operand 147 states and 161 transitions. [2019-05-23 11:16:53,198 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:16:53,199 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,199 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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 11:16:53,199 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,199 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,200 INFO L146 ILogger]: Analyzing trace with hash 1876953125, now seen corresponding path program 2 times [2019-05-23 11:16:53,200 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,200 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,201 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,201 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:53,201 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,217 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,391 INFO L146 ILogger]: Checked inductivity of 53 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:53,392 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,392 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 11:16:53,402 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:53,429 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:53,429 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,430 INFO L146 ILogger]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,433 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:53,607 INFO L146 ILogger]: Checked inductivity of 53 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:53,625 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:53,625 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-05-23 11:16:53,626 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:16:53,626 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:16:53,626 INFO L146 ILogger]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:16:53,626 INFO L146 ILogger]: Start difference. First operand 147 states and 161 transitions. Second operand 14 states. [2019-05-23 11:16:53,811 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,811 INFO L146 ILogger]: Finished difference Result 276 states and 303 transitions. [2019-05-23 11:16:53,811 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:16:53,812 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 64 [2019-05-23 11:16:53,812 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,813 INFO L146 ILogger]: With dead ends: 276 [2019-05-23 11:16:53,814 INFO L146 ILogger]: Without dead ends: 181 [2019-05-23 11:16:53,814 INFO L146 ILogger]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:16:53,815 INFO L146 ILogger]: Start minimizeSevpa. Operand 181 states. [2019-05-23 11:16:53,821 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 181 to 157. [2019-05-23 11:16:53,821 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:16:53,822 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 172 transitions. [2019-05-23 11:16:53,822 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 172 transitions. Word has length 64 [2019-05-23 11:16:53,822 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,822 INFO L146 ILogger]: Abstraction has 157 states and 172 transitions. [2019-05-23 11:16:53,823 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:16:53,823 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 172 transitions. [2019-05-23 11:16:53,825 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:16:53,825 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,825 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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 11:16:53,826 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,826 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,826 INFO L146 ILogger]: Analyzing trace with hash -279175713, now seen corresponding path program 3 times [2019-05-23 11:16:53,826 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,826 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,827 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,827 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:53,827 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,841 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,012 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:54,012 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:54,013 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:16:54,022 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:54,102 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:16:54,102 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,103 INFO L146 ILogger]: Trace formula consists of 105 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:16:54,107 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:54,897 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:54,897 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:16:54,898 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:54,899 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:54,899 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:54,900 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2019-05-23 11:16:54,967 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-05-23 11:16:54,986 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:54,987 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18] total 25 [2019-05-23 11:16:54,987 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:16:54,987 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:16:54,988 INFO L146 ILogger]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:16:54,988 INFO L146 ILogger]: Start difference. First operand 157 states and 172 transitions. Second operand 25 states. [2019-05-23 11:16:56,853 WARN L146 ILogger]: Spent 161.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2019-05-23 11:16:57,873 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:57,874 INFO L146 ILogger]: Finished difference Result 451 states and 500 transitions. [2019-05-23 11:16:57,875 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:16:57,876 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 71 [2019-05-23 11:16:57,876 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:57,878 INFO L146 ILogger]: With dead ends: 451 [2019-05-23 11:16:57,878 INFO L146 ILogger]: Without dead ends: 356 [2019-05-23 11:16:57,880 INFO L146 ILogger]: 0 DeclaredPredicates, 109 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=523, Invalid=2339, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:16:57,881 INFO L146 ILogger]: Start minimizeSevpa. Operand 356 states. [2019-05-23 11:16:57,890 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 356 to 235. [2019-05-23 11:16:57,890 INFO L146 ILogger]: Start removeUnreachable. Operand 235 states. [2019-05-23 11:16:57,891 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 235 states to 235 states and 258 transitions. [2019-05-23 11:16:57,891 INFO L146 ILogger]: Start accepts. Automaton has 235 states and 258 transitions. Word has length 71 [2019-05-23 11:16:57,892 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:57,892 INFO L146 ILogger]: Abstraction has 235 states and 258 transitions. [2019-05-23 11:16:57,892 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:16:57,892 INFO L146 ILogger]: Start isEmpty. Operand 235 states and 258 transitions. [2019-05-23 11:16:57,895 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:16:57,895 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:57,895 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 5, 5, 5, 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] [2019-05-23 11:16:57,895 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:57,896 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:57,896 INFO L146 ILogger]: Analyzing trace with hash -961844246, now seen corresponding path program 1 times [2019-05-23 11:16:57,896 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:57,896 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,897 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,897 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:57,897 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,910 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,983 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-05-23 11:16:57,983 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,983 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 11:16:57,998 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:58,036 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,038 INFO L146 ILogger]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:16:58,044 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:58,157 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:58,175 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:58,175 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10] total 12 [2019-05-23 11:16:58,175 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:58,176 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:58,176 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:58,176 INFO L146 ILogger]: Start difference. First operand 235 states and 258 transitions. Second operand 12 states. [2019-05-23 11:16:58,767 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:58,768 INFO L146 ILogger]: Finished difference Result 547 states and 603 transitions. [2019-05-23 11:16:58,769 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:16:58,769 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 79 [2019-05-23 11:16:58,770 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:58,773 INFO L146 ILogger]: With dead ends: 547 [2019-05-23 11:16:58,774 INFO L146 ILogger]: Without dead ends: 436 [2019-05-23 11:16:58,775 INFO L146 ILogger]: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=274, Invalid=538, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:16:58,775 INFO L146 ILogger]: Start minimizeSevpa. Operand 436 states. [2019-05-23 11:16:58,784 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 436 to 245. [2019-05-23 11:16:58,785 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:16:58,785 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 271 transitions. [2019-05-23 11:16:58,786 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 271 transitions. Word has length 79 [2019-05-23 11:16:58,786 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:58,786 INFO L146 ILogger]: Abstraction has 245 states and 271 transitions. [2019-05-23 11:16:58,786 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:58,786 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 271 transitions. [2019-05-23 11:16:58,788 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:16:58,788 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:58,788 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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 11:16:58,788 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:58,789 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:58,789 INFO L146 ILogger]: Analyzing trace with hash 1047461830, now seen corresponding path program 1 times [2019-05-23 11:16:58,789 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:58,789 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:58,790 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,790 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:58,790 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,798 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,852 INFO L146 ILogger]: Checked inductivity of 161 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2019-05-23 11:16:58,852 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:58,852 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:58,853 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:58,853 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:58,853 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:58,853 INFO L146 ILogger]: Start difference. First operand 245 states and 271 transitions. Second operand 3 states. [2019-05-23 11:16:58,924 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:58,924 INFO L146 ILogger]: Finished difference Result 411 states and 450 transitions. [2019-05-23 11:16:58,924 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:58,925 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 92 [2019-05-23 11:16:58,925 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:58,927 INFO L146 ILogger]: With dead ends: 411 [2019-05-23 11:16:58,927 INFO L146 ILogger]: Without dead ends: 309 [2019-05-23 11:16:58,928 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 11:16:58,928 INFO L146 ILogger]: Start minimizeSevpa. Operand 309 states. [2019-05-23 11:16:58,936 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 309 to 245. [2019-05-23 11:16:58,936 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:16:58,937 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 269 transitions. [2019-05-23 11:16:58,937 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 269 transitions. Word has length 92 [2019-05-23 11:16:58,937 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:58,938 INFO L146 ILogger]: Abstraction has 245 states and 269 transitions. [2019-05-23 11:16:58,938 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:58,938 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 269 transitions. [2019-05-23 11:16:58,939 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:16:58,939 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:58,939 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:58,940 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:58,940 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:58,940 INFO L146 ILogger]: Analyzing trace with hash 1523497995, now seen corresponding path program 1 times [2019-05-23 11:16:58,940 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:58,940 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:58,941 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,941 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:58,941 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,955 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,150 INFO L146 ILogger]: Checked inductivity of 149 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:59,151 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:59,151 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 11:16:59,163 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:59,199 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,200 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:59,203 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:59,466 INFO L146 ILogger]: Checked inductivity of 149 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:59,484 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:59,485 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2019-05-23 11:16:59,485 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:16:59,485 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:16:59,487 INFO L146 ILogger]: CoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:16:59,487 INFO L146 ILogger]: Start difference. First operand 245 states and 269 transitions. Second operand 20 states. [2019-05-23 11:16:59,769 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:59,770 INFO L146 ILogger]: Finished difference Result 411 states and 451 transitions. [2019-05-23 11:16:59,770 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:16:59,770 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 93 [2019-05-23 11:16:59,771 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:59,772 INFO L146 ILogger]: With dead ends: 411 [2019-05-23 11:16:59,772 INFO L146 ILogger]: Without dead ends: 292 [2019-05-23 11:16:59,773 INFO L146 ILogger]: 0 DeclaredPredicates, 104 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:16:59,774 INFO L146 ILogger]: Start minimizeSevpa. Operand 292 states. [2019-05-23 11:16:59,782 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 292 to 262. [2019-05-23 11:16:59,782 INFO L146 ILogger]: Start removeUnreachable. Operand 262 states. [2019-05-23 11:16:59,783 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 262 states to 262 states and 288 transitions. [2019-05-23 11:16:59,783 INFO L146 ILogger]: Start accepts. Automaton has 262 states and 288 transitions. Word has length 93 [2019-05-23 11:16:59,783 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:59,784 INFO L146 ILogger]: Abstraction has 262 states and 288 transitions. [2019-05-23 11:16:59,784 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:16:59,784 INFO L146 ILogger]: Start isEmpty. Operand 262 states and 288 transitions. [2019-05-23 11:16:59,785 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:16:59,785 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:59,785 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:59,786 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:59,786 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:59,786 INFO L146 ILogger]: Analyzing trace with hash -451184997, now seen corresponding path program 2 times [2019-05-23 11:16:59,786 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:59,787 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:59,787 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,788 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:59,794 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,015 INFO L146 ILogger]: Checked inductivity of 197 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:17:01,015 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:01,015 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 11:17:01,024 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:01,057 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:01,057 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,059 INFO L146 ILogger]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:17:01,061 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:01,278 INFO L146 ILogger]: Checked inductivity of 197 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:17:01,297 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:01,297 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2019-05-23 11:17:01,298 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:17:01,298 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:17:01,298 INFO L146 ILogger]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:17:01,299 INFO L146 ILogger]: Start difference. First operand 262 states and 288 transitions. Second operand 22 states. [2019-05-23 11:17:01,628 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:01,628 INFO L146 ILogger]: Finished difference Result 428 states and 470 transitions. [2019-05-23 11:17:01,628 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:17:01,629 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 100 [2019-05-23 11:17:01,629 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:01,633 INFO L146 ILogger]: With dead ends: 428 [2019-05-23 11:17:01,634 INFO L146 ILogger]: Without dead ends: 309 [2019-05-23 11:17:01,634 INFO L146 ILogger]: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:17:01,635 INFO L146 ILogger]: Start minimizeSevpa. Operand 309 states. [2019-05-23 11:17:01,643 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 309 to 279. [2019-05-23 11:17:01,643 INFO L146 ILogger]: Start removeUnreachable. Operand 279 states. [2019-05-23 11:17:01,644 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2019-05-23 11:17:01,644 INFO L146 ILogger]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 100 [2019-05-23 11:17:01,645 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:01,645 INFO L146 ILogger]: Abstraction has 279 states and 307 transitions. [2019-05-23 11:17:01,645 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:17:01,645 INFO L146 ILogger]: Start isEmpty. Operand 279 states and 307 transitions. [2019-05-23 11:17:01,646 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 108 [2019-05-23 11:17:01,646 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:01,646 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:01,647 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:01,647 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:01,647 INFO L146 ILogger]: Analyzing trace with hash 1989327371, now seen corresponding path program 3 times [2019-05-23 11:17:01,647 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:01,647 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:01,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,648 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:01,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,665 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,868 INFO L146 ILogger]: Checked inductivity of 252 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:17:01,869 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:01,869 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 11:17:01,878 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:01,905 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:17:01,905 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,906 INFO L146 ILogger]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:17:01,910 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:02,329 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:17:02,332 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:02,332 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 35 [2019-05-23 11:17:02,333 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:02,344 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:02,344 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:02,345 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:40 [2019-05-23 11:17:02,379 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:17:02,380 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:02,381 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 32 [2019-05-23 11:17:02,381 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:02,390 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:02,391 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:02,392 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:55, output treesize:29 [2019-05-23 11:17:02,558 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:02,558 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2019-05-23 11:17:02,559 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:02,561 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:02,561 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:02,561 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2019-05-23 11:17:02,694 INFO L146 ILogger]: Checked inductivity of 252 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2019-05-23 11:17:02,712 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:02,712 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22] total 33 [2019-05-23 11:17:02,713 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:17:02,713 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:17:02,714 INFO L146 ILogger]: CoverageRelationStatistics Valid=228, Invalid=828, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:17:02,714 INFO L146 ILogger]: Start difference. First operand 279 states and 307 transitions. Second operand 33 states. [2019-05-23 11:17:04,884 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:04,884 INFO L146 ILogger]: Finished difference Result 653 states and 721 transitions. [2019-05-23 11:17:04,885 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-05-23 11:17:04,885 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 107 [2019-05-23 11:17:04,885 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:04,889 INFO L146 ILogger]: With dead ends: 653 [2019-05-23 11:17:04,889 INFO L146 ILogger]: Without dead ends: 534 [2019-05-23 11:17:04,891 INFO L146 ILogger]: 0 DeclaredPredicates, 155 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=833, Invalid=3723, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:17:04,891 INFO L146 ILogger]: Start minimizeSevpa. Operand 534 states. [2019-05-23 11:17:04,902 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 534 to 362. [2019-05-23 11:17:04,902 INFO L146 ILogger]: Start removeUnreachable. Operand 362 states. [2019-05-23 11:17:04,903 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 362 states to 362 states and 401 transitions. [2019-05-23 11:17:04,903 INFO L146 ILogger]: Start accepts. Automaton has 362 states and 401 transitions. Word has length 107 [2019-05-23 11:17:04,904 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:04,904 INFO L146 ILogger]: Abstraction has 362 states and 401 transitions. [2019-05-23 11:17:04,904 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:17:04,904 INFO L146 ILogger]: Start isEmpty. Operand 362 states and 401 transitions. [2019-05-23 11:17:04,905 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:17:04,905 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:04,905 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:04,906 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:04,906 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:04,906 INFO L146 ILogger]: Analyzing trace with hash -1509944303, now seen corresponding path program 4 times [2019-05-23 11:17:04,906 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:04,906 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:04,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,907 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:04,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,917 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:05,125 INFO L146 ILogger]: Checked inductivity of 314 backedges. 0 proven. 307 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:17:05,125 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:05,125 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 11:17:05,134 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:05,158 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:05,158 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:05,159 INFO L146 ILogger]: Trace formula consists of 154 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:17:05,161 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:05,752 INFO L146 ILogger]: treesize reduction 76, result has 51.0 percent of original size [2019-05-23 11:17:05,753 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 102 [2019-05-23 11:17:05,756 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:05,811 INFO L146 ILogger]: treesize reduction 53, result has 54.3 percent of original size [2019-05-23 11:17:05,812 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:17:05,813 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:74, output treesize:50 [2019-05-23 11:17:06,402 INFO L146 ILogger]: treesize reduction 56, result has 51.7 percent of original size [2019-05-23 11:17:06,403 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 79 [2019-05-23 11:17:06,405 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:06,449 INFO L146 ILogger]: treesize reduction 24, result has 78.2 percent of original size [2019-05-23 11:17:06,451 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:17:06,452 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:62, output treesize:91 [2019-05-23 11:17:15,376 WARN L146 ILogger]: Spent 8.75 s on a formula simplification. DAG size of input: 33 DAG size of output: 19 [2019-05-23 11:17:15,585 INFO L146 ILogger]: treesize reduction 9, result has 10.0 percent of original size [2019-05-23 11:17:15,585 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2019-05-23 11:17:15,586 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:15,587 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:15,587 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:15,587 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:5 [2019-05-23 11:17:15,763 INFO L146 ILogger]: Checked inductivity of 314 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2019-05-23 11:17:15,781 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:15,781 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25] total 36 [2019-05-23 11:17:15,782 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:17:15,782 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:17:15,783 INFO L146 ILogger]: CoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:17:15,783 INFO L146 ILogger]: Start difference. First operand 362 states and 401 transitions. Second operand 36 states. [2019-05-23 11:17:20,655 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:20,655 INFO L146 ILogger]: Finished difference Result 757 states and 839 transitions. [2019-05-23 11:17:20,656 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:17:20,656 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 114 [2019-05-23 11:17:20,656 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:20,660 INFO L146 ILogger]: With dead ends: 757 [2019-05-23 11:17:20,660 INFO L146 ILogger]: Without dead ends: 630 [2019-05-23 11:17:20,662 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=605, Invalid=3555, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:17:20,663 INFO L146 ILogger]: Start minimizeSevpa. Operand 630 states. [2019-05-23 11:17:20,674 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 630 to 379. [2019-05-23 11:17:20,674 INFO L146 ILogger]: Start removeUnreachable. Operand 379 states. [2019-05-23 11:17:20,675 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 379 states to 379 states and 420 transitions. [2019-05-23 11:17:20,675 INFO L146 ILogger]: Start accepts. Automaton has 379 states and 420 transitions. Word has length 114 [2019-05-23 11:17:20,675 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:20,675 INFO L146 ILogger]: Abstraction has 379 states and 420 transitions. [2019-05-23 11:17:20,675 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:17:20,675 INFO L146 ILogger]: Start isEmpty. Operand 379 states and 420 transitions. [2019-05-23 11:17:20,676 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 122 [2019-05-23 11:17:20,677 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:20,677 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:20,677 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:20,677 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:20,677 INFO L146 ILogger]: Analyzing trace with hash 1258325835, now seen corresponding path program 5 times [2019-05-23 11:17:20,678 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:20,678 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:20,678 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:20,679 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:20,679 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:20,689 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:21,449 INFO L146 ILogger]: Checked inductivity of 383 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:17:21,450 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:21,450 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 11:17:21,459 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:21,493 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:17:21,494 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:21,495 INFO L146 ILogger]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:17:21,497 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:21,997 INFO L146 ILogger]: Checked inductivity of 383 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:17:22,028 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:22,028 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2019-05-23 11:17:22,029 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:17:22,029 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:17:22,030 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:17:22,030 INFO L146 ILogger]: Start difference. First operand 379 states and 420 transitions. Second operand 28 states. [2019-05-23 11:17:22,343 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:22,343 INFO L146 ILogger]: Finished difference Result 566 states and 626 transitions. [2019-05-23 11:17:22,344 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:17:22,344 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 121 [2019-05-23 11:17:22,344 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:22,347 INFO L146 ILogger]: With dead ends: 566 [2019-05-23 11:17:22,347 INFO L146 ILogger]: Without dead ends: 439 [2019-05-23 11:17:22,349 INFO L146 ILogger]: 0 DeclaredPredicates, 136 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:17:22,350 INFO L146 ILogger]: Start minimizeSevpa. Operand 439 states. [2019-05-23 11:17:22,361 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 439 to 403. [2019-05-23 11:17:22,361 INFO L146 ILogger]: Start removeUnreachable. Operand 403 states. [2019-05-23 11:17:22,362 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 403 states to 403 states and 447 transitions. [2019-05-23 11:17:22,362 INFO L146 ILogger]: Start accepts. Automaton has 403 states and 447 transitions. Word has length 121 [2019-05-23 11:17:22,362 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:22,363 INFO L146 ILogger]: Abstraction has 403 states and 447 transitions. [2019-05-23 11:17:22,363 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:17:22,363 INFO L146 ILogger]: Start isEmpty. Operand 403 states and 447 transitions. [2019-05-23 11:17:22,364 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 129 [2019-05-23 11:17:22,364 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:22,364 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 11, 11, 11, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:22,365 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:22,365 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:22,365 INFO L146 ILogger]: Analyzing trace with hash 313164635, now seen corresponding path program 6 times [2019-05-23 11:17:22,365 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:22,365 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:22,366 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:22,366 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:22,366 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:22,377 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:23,011 INFO L146 ILogger]: Checked inductivity of 459 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:17:23,011 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:23,011 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:17:23,021 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:23,058 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:17:23,058 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:23,059 INFO L146 ILogger]: Trace formula consists of 156 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:17:23,062 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:25,411 INFO L146 ILogger]: treesize reduction 17, result has 88.6 percent of original size [2019-05-23 11:17:25,411 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 154 [2019-05-23 11:17:25,436 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:25,540 WARN L146 ILogger]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2019-05-23 11:17:25,541 INFO L146 ILogger]: treesize reduction 119, result has 39.3 percent of original size [2019-05-23 11:17:25,542 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:17:25,542 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:74, output treesize:40 [2019-05-23 11:17:25,825 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:17:25,993 WARN L146 ILogger]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-05-23 11:17:25,994 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:25,994 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 96 [2019-05-23 11:17:25,997 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:26,094 INFO L146 ILogger]: treesize reduction 87, result has 47.6 percent of original size [2019-05-23 11:17:26,095 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:17:26,096 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:55, output treesize:72 [2019-05-23 11:17:26,690 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:26,691 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2019-05-23 11:17:26,691 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:26,695 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:26,695 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:26,695 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2019-05-23 11:17:26,843 INFO L146 ILogger]: Checked inductivity of 459 backedges. 113 proven. 71 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2019-05-23 11:17:26,861 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:26,862 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 39 [2019-05-23 11:17:26,862 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:17:26,863 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:17:26,863 INFO L146 ILogger]: CoverageRelationStatistics Valid=251, Invalid=1229, Unknown=2, NotChecked=0, Total=1482 [2019-05-23 11:17:26,863 INFO L146 ILogger]: Start difference. First operand 403 states and 447 transitions. Second operand 39 states. [2019-05-23 11:17:31,092 WARN L146 ILogger]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-05-23 11:17:35,715 WARN L146 ILogger]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-05-23 11:17:48,115 WARN L146 ILogger]: Spent 683.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2019-05-23 11:17:52,625 WARN L146 ILogger]: Spent 861.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-05-23 11:17:55,746 WARN L146 ILogger]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 37 [2019-05-23 11:17:56,517 WARN L146 ILogger]: Spent 380.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46