java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/zero_sum_const4_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:45,495 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:45,498 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:45,515 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:45,515 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:45,516 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:45,517 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:45,519 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:45,520 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:45,521 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:45,522 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:45,522 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:45,523 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:45,524 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:45,525 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:45,526 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:45,527 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:45,529 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:45,531 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:45,532 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:45,533 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:45,535 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:45,537 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:45,537 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:45,537 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:45,538 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:45,539 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:45,540 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:45,540 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:45,541 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:45,541 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:45,542 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:45,543 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:45,543 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:45,544 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:45,544 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:45,545 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:45,545 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:45,546 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:45,546 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:45,561 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:45,561 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:45,562 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:45,563 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:45,563 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:45,563 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:45,563 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:45,564 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:45,564 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:45,564 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:45,564 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:45,564 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:45,565 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:45,565 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:45,565 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:45,565 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:45,565 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:45,566 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:45,566 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:45,566 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:45,566 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:45,566 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:45,567 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:45,567 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:45,567 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:45,567 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:45,567 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:45,567 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:45,568 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:29:45,598 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:45,609 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:45,613 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:45,614 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:45,614 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:45,615 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_const4_true-unreach-call.c [2019-05-23 11:29:45,665 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f36b4b4/6453a6395a7d4b3eb7acfc1718b992ad/FLAG1f9953534 [2019-05-23 11:29:46,087 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:46,088 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_const4_true-unreach-call.c [2019-05-23 11:29:46,097 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f36b4b4/6453a6395a7d4b3eb7acfc1718b992ad/FLAG1f9953534 [2019-05-23 11:29:46,430 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f36b4b4/6453a6395a7d4b3eb7acfc1718b992ad [2019-05-23 11:29:46,439 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:46,440 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:46,443 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:46,444 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:46,447 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:46,448 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,451 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376c1ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46, skipping insertion in model container [2019-05-23 11:29:46,451 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,459 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:46,477 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:46,679 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:46,683 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:46,711 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:46,734 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:46,735 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46 WrapperNode [2019-05-23 11:29:46,735 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:46,736 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:46,736 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:46,737 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:46,746 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,755 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,785 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:46,786 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:46,786 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:46,786 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:46,796 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,796 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,805 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,806 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,822 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,925 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,927 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (1/1) ... [2019-05-23 11:29:46,932 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:46,932 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:46,933 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:46,933 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:46,934 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:29:46,978 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:29:46,978 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:46,978 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:46,979 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:46,979 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:46,979 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:47,555 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:47,555 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:29:47,556 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:47 BoogieIcfgContainer [2019-05-23 11:29:47,557 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:47,558 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:47,558 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:47,561 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:47,561 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:46" (1/3) ... [2019-05-23 11:29:47,562 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4d1f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:47, skipping insertion in model container [2019-05-23 11:29:47,562 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:46" (2/3) ... [2019-05-23 11:29:47,562 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4d1f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:47, skipping insertion in model container [2019-05-23 11:29:47,563 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:47" (3/3) ... [2019-05-23 11:29:47,564 INFO L146 ILogger]: Analyzing ICFG zero_sum_const4_true-unreach-call.c [2019-05-23 11:29:47,574 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:47,583 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:47,598 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:47,629 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:47,630 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:47,630 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:47,630 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:47,631 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:47,631 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:47,631 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:47,631 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:47,631 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:47,649 INFO L146 ILogger]: Start isEmpty. Operand 94 states. [2019-05-23 11:29:47,659 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:29:47,660 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:47,661 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:47,662 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:47,666 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:47,667 INFO L146 ILogger]: Analyzing trace with hash 1109187440, now seen corresponding path program 1 times [2019-05-23 11:29:47,668 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:47,668 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:47,714 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:47,714 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:47,714 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:47,753 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:47,800 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:47,803 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:47,803 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:47,807 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:47,817 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:47,818 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:47,820 INFO L146 ILogger]: Start difference. First operand 94 states. Second operand 2 states. [2019-05-23 11:29:47,846 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:47,848 INFO L146 ILogger]: Finished difference Result 170 states and 205 transitions. [2019-05-23 11:29:47,848 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:47,850 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 35 [2019-05-23 11:29:47,850 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:47,863 INFO L146 ILogger]: With dead ends: 170 [2019-05-23 11:29:47,863 INFO L146 ILogger]: Without dead ends: 88 [2019-05-23 11:29:47,869 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:47,888 INFO L146 ILogger]: Start minimizeSevpa. Operand 88 states. [2019-05-23 11:29:47,908 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 88 to 88. [2019-05-23 11:29:47,909 INFO L146 ILogger]: Start removeUnreachable. Operand 88 states. [2019-05-23 11:29:47,912 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2019-05-23 11:29:47,913 INFO L146 ILogger]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 35 [2019-05-23 11:29:47,914 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:47,914 INFO L146 ILogger]: Abstraction has 88 states and 96 transitions. [2019-05-23 11:29:47,914 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:47,914 INFO L146 ILogger]: Start isEmpty. Operand 88 states and 96 transitions. [2019-05-23 11:29:47,916 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:29:47,916 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:47,916 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:47,917 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:47,917 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:47,917 INFO L146 ILogger]: Analyzing trace with hash 1836950237, now seen corresponding path program 1 times [2019-05-23 11:29:47,918 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:47,918 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:47,919 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:47,919 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:47,919 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:47,943 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:48,111 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:48,112 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:48,112 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:48,114 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:48,114 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:48,115 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:48,115 INFO L146 ILogger]: Start difference. First operand 88 states and 96 transitions. Second operand 5 states. [2019-05-23 11:29:48,454 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:48,454 INFO L146 ILogger]: Finished difference Result 125 states and 140 transitions. [2019-05-23 11:29:48,456 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:48,456 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 35 [2019-05-23 11:29:48,457 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:48,458 INFO L146 ILogger]: With dead ends: 125 [2019-05-23 11:29:48,459 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:29:48,460 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:48,460 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:29:48,472 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 103. [2019-05-23 11:29:48,472 INFO L146 ILogger]: Start removeUnreachable. Operand 103 states. [2019-05-23 11:29:48,474 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2019-05-23 11:29:48,474 INFO L146 ILogger]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 35 [2019-05-23 11:29:48,475 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:48,475 INFO L146 ILogger]: Abstraction has 103 states and 118 transitions. [2019-05-23 11:29:48,475 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:48,475 INFO L146 ILogger]: Start isEmpty. Operand 103 states and 118 transitions. [2019-05-23 11:29:48,477 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:29:48,477 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:48,477 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:48,478 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:48,478 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:48,478 INFO L146 ILogger]: Analyzing trace with hash 2018973776, now seen corresponding path program 1 times [2019-05-23 11:29:48,478 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:48,479 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:48,480 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:48,480 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:48,480 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:48,496 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:48,625 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:48,626 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:48,626 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:48,644 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:48,678 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:48,680 INFO L146 ILogger]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:48,686 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:48,820 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:29:48,844 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:48,844 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:48,845 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:48,846 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:48,846 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:48,846 INFO L146 ILogger]: Start difference. First operand 103 states and 118 transitions. Second operand 7 states. [2019-05-23 11:29:49,738 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:49,738 INFO L146 ILogger]: Finished difference Result 227 states and 259 transitions. [2019-05-23 11:29:49,741 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:49,741 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 42 [2019-05-23 11:29:49,741 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:49,743 INFO L146 ILogger]: With dead ends: 227 [2019-05-23 11:29:49,743 INFO L146 ILogger]: Without dead ends: 142 [2019-05-23 11:29:49,744 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:49,745 INFO L146 ILogger]: Start minimizeSevpa. Operand 142 states. [2019-05-23 11:29:49,753 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 142 to 104. [2019-05-23 11:29:49,754 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:29:49,755 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2019-05-23 11:29:49,755 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 42 [2019-05-23 11:29:49,756 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:49,756 INFO L146 ILogger]: Abstraction has 104 states and 112 transitions. [2019-05-23 11:29:49,756 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:49,756 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 112 transitions. [2019-05-23 11:29:49,759 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:29:49,759 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:49,760 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:49,760 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:49,760 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:49,761 INFO L146 ILogger]: Analyzing trace with hash 313886532, now seen corresponding path program 1 times [2019-05-23 11:29:49,761 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:49,761 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:49,762 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,762 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:49,762 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:49,794 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,938 INFO L146 ILogger]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-05-23 11:29:49,938 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:49,938 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:49,957 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:49,996 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,997 INFO L146 ILogger]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:50,001 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:50,087 INFO L146 ILogger]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-05-23 11:29:50,106 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:50,106 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:50,107 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:50,107 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:50,107 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:50,108 INFO L146 ILogger]: Start difference. First operand 104 states and 112 transitions. Second operand 9 states. [2019-05-23 11:29:51,128 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:51,129 INFO L146 ILogger]: Finished difference Result 232 states and 248 transitions. [2019-05-23 11:29:51,129 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:51,130 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 103 [2019-05-23 11:29:51,130 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:51,132 INFO L146 ILogger]: With dead ends: 232 [2019-05-23 11:29:51,133 INFO L146 ILogger]: Without dead ends: 147 [2019-05-23 11:29:51,134 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:51,135 INFO L146 ILogger]: Start minimizeSevpa. Operand 147 states. [2019-05-23 11:29:51,143 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 147 to 109. [2019-05-23 11:29:51,143 INFO L146 ILogger]: Start removeUnreachable. Operand 109 states. [2019-05-23 11:29:51,144 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2019-05-23 11:29:51,144 INFO L146 ILogger]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 103 [2019-05-23 11:29:51,145 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:51,145 INFO L146 ILogger]: Abstraction has 109 states and 117 transitions. [2019-05-23 11:29:51,145 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:51,145 INFO L146 ILogger]: Start isEmpty. Operand 109 states and 117 transitions. [2019-05-23 11:29:51,149 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 109 [2019-05-23 11:29:51,149 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:51,149 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:51,150 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:51,150 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:51,150 INFO L146 ILogger]: Analyzing trace with hash 894167568, now seen corresponding path program 2 times [2019-05-23 11:29:51,150 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:51,151 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:51,152 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,152 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:51,152 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,180 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,283 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:29:51,283 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:51,283 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:51,301 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:51,355 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:51,355 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,356 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:51,361 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:51,553 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:29:51,573 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:51,574 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:51,574 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:51,574 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:51,575 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:51,575 INFO L146 ILogger]: Start difference. First operand 109 states and 117 transitions. Second operand 9 states. [2019-05-23 11:29:51,883 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:51,884 INFO L146 ILogger]: Finished difference Result 227 states and 242 transitions. [2019-05-23 11:29:51,884 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:51,884 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 108 [2019-05-23 11:29:51,885 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:51,886 INFO L146 ILogger]: With dead ends: 227 [2019-05-23 11:29:51,887 INFO L146 ILogger]: Without dead ends: 151 [2019-05-23 11:29:51,888 INFO L146 ILogger]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:51,889 INFO L146 ILogger]: Start minimizeSevpa. Operand 151 states. [2019-05-23 11:29:51,896 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 151 to 116. [2019-05-23 11:29:51,896 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:29:51,897 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2019-05-23 11:29:51,897 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 108 [2019-05-23 11:29:51,897 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:51,898 INFO L146 ILogger]: Abstraction has 116 states and 124 transitions. [2019-05-23 11:29:51,898 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:51,898 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 124 transitions. [2019-05-23 11:29:51,901 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:29:51,902 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:51,902 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:51,902 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:51,903 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:51,903 INFO L146 ILogger]: Analyzing trace with hash -1921493560, now seen corresponding path program 3 times [2019-05-23 11:29:51,903 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:51,903 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:51,904 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,904 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:51,904 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,932 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,080 INFO L146 ILogger]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:29:52,081 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:52,081 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:52,093 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:52,146 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:29:52,146 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,148 INFO L146 ILogger]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:52,152 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:52,349 INFO L146 ILogger]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:29:52,373 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:52,373 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:52,373 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:52,374 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:52,374 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:52,374 INFO L146 ILogger]: Start difference. First operand 116 states and 124 transitions. Second operand 9 states. [2019-05-23 11:29:52,646 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:52,646 INFO L146 ILogger]: Finished difference Result 220 states and 234 transitions. [2019-05-23 11:29:52,646 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:52,647 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 115 [2019-05-23 11:29:52,647 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:52,649 INFO L146 ILogger]: With dead ends: 220 [2019-05-23 11:29:52,649 INFO L146 ILogger]: Without dead ends: 153 [2019-05-23 11:29:52,650 INFO L146 ILogger]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:52,650 INFO L146 ILogger]: Start minimizeSevpa. Operand 153 states. [2019-05-23 11:29:52,656 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 153 to 123. [2019-05-23 11:29:52,657 INFO L146 ILogger]: Start removeUnreachable. Operand 123 states. [2019-05-23 11:29:52,657 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2019-05-23 11:29:52,658 INFO L146 ILogger]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 115 [2019-05-23 11:29:52,658 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:52,658 INFO L146 ILogger]: Abstraction has 123 states and 131 transitions. [2019-05-23 11:29:52,658 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:52,658 INFO L146 ILogger]: Start isEmpty. Operand 123 states and 131 transitions. [2019-05-23 11:29:52,660 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 123 [2019-05-23 11:29:52,660 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:52,661 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:52,661 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:52,661 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:52,662 INFO L146 ILogger]: Analyzing trace with hash -325802615, now seen corresponding path program 4 times [2019-05-23 11:29:52,662 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:52,662 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:52,663 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,663 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:52,663 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,682 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,801 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-05-23 11:29:52,801 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:52,801 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:52,810 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:52,841 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:52,841 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,842 INFO L146 ILogger]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:52,847 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:52,941 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-05-23 11:29:52,960 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:52,960 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:52,961 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:52,961 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:52,962 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:52,962 INFO L146 ILogger]: Start difference. First operand 123 states and 131 transitions. Second operand 9 states. [2019-05-23 11:29:53,321 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:53,321 INFO L146 ILogger]: Finished difference Result 213 states and 226 transitions. [2019-05-23 11:29:53,322 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:53,322 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 122 [2019-05-23 11:29:53,322 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:53,324 INFO L146 ILogger]: With dead ends: 213 [2019-05-23 11:29:53,324 INFO L146 ILogger]: Without dead ends: 155 [2019-05-23 11:29:53,325 INFO L146 ILogger]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:53,326 INFO L146 ILogger]: Start minimizeSevpa. Operand 155 states. [2019-05-23 11:29:53,332 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 155 to 130. [2019-05-23 11:29:53,332 INFO L146 ILogger]: Start removeUnreachable. Operand 130 states. [2019-05-23 11:29:53,333 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2019-05-23 11:29:53,333 INFO L146 ILogger]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 122 [2019-05-23 11:29:53,333 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:53,333 INFO L146 ILogger]: Abstraction has 130 states and 138 transitions. [2019-05-23 11:29:53,333 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:53,334 INFO L146 ILogger]: Start isEmpty. Operand 130 states and 138 transitions. [2019-05-23 11:29:53,335 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 130 [2019-05-23 11:29:53,335 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:53,336 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:53,336 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:53,336 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:53,336 INFO L146 ILogger]: Analyzing trace with hash 514069519, now seen corresponding path program 5 times [2019-05-23 11:29:53,337 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:53,337 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:53,337 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:53,338 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:53,338 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:53,356 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,476 INFO L146 ILogger]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:29:53,476 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:53,476 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:53,486 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:53,531 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:29:53,531 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,532 INFO L146 ILogger]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:53,535 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:53,622 INFO L146 ILogger]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:29:53,641 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:53,641 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:53,641 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:53,642 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:53,642 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:53,642 INFO L146 ILogger]: Start difference. First operand 130 states and 138 transitions. Second operand 9 states. [2019-05-23 11:29:54,109 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:54,109 INFO L146 ILogger]: Finished difference Result 190 states and 201 transitions. [2019-05-23 11:29:54,109 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:54,110 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 129 [2019-05-23 11:29:54,110 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:54,112 INFO L146 ILogger]: With dead ends: 190 [2019-05-23 11:29:54,112 INFO L146 ILogger]: Without dead ends: 157 [2019-05-23 11:29:54,113 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:54,114 INFO L146 ILogger]: Start minimizeSevpa. Operand 157 states. [2019-05-23 11:29:54,118 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 157 to 137. [2019-05-23 11:29:54,118 INFO L146 ILogger]: Start removeUnreachable. Operand 137 states. [2019-05-23 11:29:54,119 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2019-05-23 11:29:54,119 INFO L146 ILogger]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 129 [2019-05-23 11:29:54,120 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:54,120 INFO L146 ILogger]: Abstraction has 137 states and 145 transitions. [2019-05-23 11:29:54,120 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:54,120 INFO L146 ILogger]: Start isEmpty. Operand 137 states and 145 transitions. [2019-05-23 11:29:54,122 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 137 [2019-05-23 11:29:54,122 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:54,122 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:54,123 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:54,123 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:54,123 INFO L146 ILogger]: Analyzing trace with hash 1950900795, now seen corresponding path program 6 times [2019-05-23 11:29:54,123 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:54,123 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:54,124 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,124 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:54,124 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,141 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:54,257 INFO L146 ILogger]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:29:54,258 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:54,258 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:54,267 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:54,320 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:29:54,320 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:54,321 INFO L146 ILogger]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:54,324 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:54,410 INFO L146 ILogger]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:29:54,428 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:54,428 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:54,429 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:54,429 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:54,430 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:54,430 INFO L146 ILogger]: Start difference. First operand 137 states and 145 transitions. Second operand 9 states. [2019-05-23 11:29:54,710 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:54,710 INFO L146 ILogger]: Finished difference Result 183 states and 193 transitions. [2019-05-23 11:29:54,711 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:54,711 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 136 [2019-05-23 11:29:54,712 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:54,713 INFO L146 ILogger]: With dead ends: 183 [2019-05-23 11:29:54,713 INFO L146 ILogger]: Without dead ends: 159 [2019-05-23 11:29:54,714 INFO L146 ILogger]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:54,715 INFO L146 ILogger]: Start minimizeSevpa. Operand 159 states. [2019-05-23 11:29:54,718 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 159 to 144. [2019-05-23 11:29:54,719 INFO L146 ILogger]: Start removeUnreachable. Operand 144 states. [2019-05-23 11:29:54,719 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2019-05-23 11:29:54,719 INFO L146 ILogger]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 136 [2019-05-23 11:29:54,720 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:54,720 INFO L146 ILogger]: Abstraction has 144 states and 152 transitions. [2019-05-23 11:29:54,720 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:54,720 INFO L146 ILogger]: Start isEmpty. Operand 144 states and 152 transitions. [2019-05-23 11:29:54,722 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:29:54,722 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:54,722 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:54,722 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:54,723 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:54,723 INFO L146 ILogger]: Analyzing trace with hash -1507631690, now seen corresponding path program 7 times [2019-05-23 11:29:54,723 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:54,723 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:54,724 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,724 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:54,724 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,740 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,247 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-05-23 11:29:55,248 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:55,248 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:55,273 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:55,319 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,320 INFO L146 ILogger]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:55,324 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:55,631 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-05-23 11:29:55,650 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:55,650 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:55,650 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:55,651 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:55,651 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:55,651 INFO L146 ILogger]: Start difference. First operand 144 states and 152 transitions. Second operand 9 states. [2019-05-23 11:29:55,918 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:55,918 INFO L146 ILogger]: Finished difference Result 176 states and 185 transitions. [2019-05-23 11:29:55,918 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:55,919 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 143 [2019-05-23 11:29:55,919 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:55,921 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:29:55,921 INFO L146 ILogger]: Without dead ends: 161 [2019-05-23 11:29:55,922 INFO L146 ILogger]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:55,923 INFO L146 ILogger]: Start minimizeSevpa. Operand 161 states. [2019-05-23 11:29:55,926 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 161 to 151. [2019-05-23 11:29:55,927 INFO L146 ILogger]: Start removeUnreachable. Operand 151 states. [2019-05-23 11:29:55,927 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 151 states to 151 states and 159 transitions. [2019-05-23 11:29:55,928 INFO L146 ILogger]: Start accepts. Automaton has 151 states and 159 transitions. Word has length 143 [2019-05-23 11:29:55,928 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:55,928 INFO L146 ILogger]: Abstraction has 151 states and 159 transitions. [2019-05-23 11:29:55,928 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:55,928 INFO L146 ILogger]: Start isEmpty. Operand 151 states and 159 transitions. [2019-05-23 11:29:55,930 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 151 [2019-05-23 11:29:55,930 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:55,930 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:55,931 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:55,931 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:55,931 INFO L146 ILogger]: Analyzing trace with hash 994232020, now seen corresponding path program 8 times [2019-05-23 11:29:55,931 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:55,931 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:55,932 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,932 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:55,932 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,948 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,095 INFO L146 ILogger]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:29:56,096 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:56,096 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:56,104 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:56,154 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:56,154 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,155 INFO L146 ILogger]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:56,157 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:56,645 INFO L146 ILogger]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:29:56,673 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:56,673 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:56,674 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:56,674 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:56,674 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:56,674 INFO L146 ILogger]: Start difference. First operand 151 states and 159 transitions. Second operand 9 states. [2019-05-23 11:29:57,009 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:57,009 INFO L146 ILogger]: Finished difference Result 169 states and 177 transitions. [2019-05-23 11:29:57,010 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:57,010 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 150 [2019-05-23 11:29:57,010 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:57,012 INFO L146 ILogger]: With dead ends: 169 [2019-05-23 11:29:57,012 INFO L146 ILogger]: Without dead ends: 163 [2019-05-23 11:29:57,013 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:57,013 INFO L146 ILogger]: Start minimizeSevpa. Operand 163 states. [2019-05-23 11:29:57,017 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 163 to 158. [2019-05-23 11:29:57,018 INFO L146 ILogger]: Start removeUnreachable. Operand 158 states. [2019-05-23 11:29:57,018 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2019-05-23 11:29:57,018 INFO L146 ILogger]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 150 [2019-05-23 11:29:57,019 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:57,019 INFO L146 ILogger]: Abstraction has 158 states and 166 transitions. [2019-05-23 11:29:57,019 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:57,019 INFO L146 ILogger]: Start isEmpty. Operand 158 states and 166 transitions. [2019-05-23 11:29:57,020 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:29:57,021 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:57,021 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:57,021 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:57,021 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:57,021 INFO L146 ILogger]: Analyzing trace with hash 2090540765, now seen corresponding path program 9 times [2019-05-23 11:29:57,022 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:57,022 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:57,022 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:57,023 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:57,023 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:57,078 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:58,326 WARN L146 ILogger]: Spent 337.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2019-05-23 11:29:58,634 WARN L146 ILogger]: Spent 180.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2019-05-23 11:29:59,471 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-05-23 11:30:03,748 WARN L146 ILogger]: Spent 112.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2019-05-23 11:30:04,164 WARN L146 ILogger]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2019-05-23 11:30:05,006 INFO L146 ILogger]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:05,007 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:05,007 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:05,016 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:05,054 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:30:05,054 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:05,057 WARN L146 ILogger]: Trace formula consists of 253 conjuncts, 130 conjunts are in the unsatisfiable core [2019-05-23 11:30:05,060 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:12,431 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:30:12,432 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:30:12,446 INFO L146 ILogger]: treesize reduction 3, result has 70.0 percent of original size [2019-05-23 11:30:12,447 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 17 [2019-05-23 11:30:12,448 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:12,464 INFO L146 ILogger]: treesize reduction 3, result has 81.3 percent of original size [2019-05-23 11:30:12,464 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:12,465 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:43, output treesize:3 [2019-05-23 11:30:12,905 INFO L146 ILogger]: Checked inductivity of 79 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:30:12,936 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:12,937 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 60] total 114 [2019-05-23 11:30:12,937 INFO L146 ILogger]: Interpolant automaton has 114 states [2019-05-23 11:30:12,938 INFO L146 ILogger]: Constructing interpolant automaton starting with 114 interpolants. [2019-05-23 11:30:12,943 INFO L146 ILogger]: CoverageRelationStatistics Valid=676, Invalid=12206, Unknown=0, NotChecked=0, Total=12882 [2019-05-23 11:30:12,943 INFO L146 ILogger]: Start difference. First operand 158 states and 166 transitions. Second operand 114 states. [2019-05-23 11:30:20,463 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2019-05-23 11:30:22,921 WARN L146 ILogger]: Spent 197.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 28 [2019-05-23 11:30:32,272 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:32,272 INFO L146 ILogger]: Finished difference Result 323 states and 338 transitions. [2019-05-23 11:30:32,273 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-05-23 11:30:32,273 INFO L146 ILogger]: Start accepts. Automaton has 114 states. Word has length 157 [2019-05-23 11:30:32,274 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:32,276 INFO L146 ILogger]: With dead ends: 323 [2019-05-23 11:30:32,276 INFO L146 ILogger]: Without dead ends: 317 [2019-05-23 11:30:32,283 INFO L146 ILogger]: 0 DeclaredPredicates, 300 GetRequests, 99 SyntacticMatches, 22 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10077 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=2193, Invalid=30387, Unknown=0, NotChecked=0, Total=32580 [2019-05-23 11:30:32,284 INFO L146 ILogger]: Start minimizeSevpa. Operand 317 states. [2019-05-23 11:30:32,292 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 317 to 269. [2019-05-23 11:30:32,292 INFO L146 ILogger]: Start removeUnreachable. Operand 269 states. [2019-05-23 11:30:32,293 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 269 states to 269 states and 284 transitions. [2019-05-23 11:30:32,293 INFO L146 ILogger]: Start accepts. Automaton has 269 states and 284 transitions. Word has length 157 [2019-05-23 11:30:32,294 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:32,294 INFO L146 ILogger]: Abstraction has 269 states and 284 transitions. [2019-05-23 11:30:32,294 INFO L146 ILogger]: Interpolant automaton has 114 states. [2019-05-23 11:30:32,294 INFO L146 ILogger]: Start isEmpty. Operand 269 states and 284 transitions. [2019-05-23 11:30:32,295 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:30:32,296 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:32,296 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:32,296 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:32,296 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:32,297 INFO L146 ILogger]: Analyzing trace with hash -1820636720, now seen corresponding path program 10 times [2019-05-23 11:30:32,297 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:32,297 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:32,298 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:32,298 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:32,298 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:32,314 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:32,470 INFO L146 ILogger]: Checked inductivity of 94 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:32,471 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:32,471 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:32,480 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:32,530 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:32,530 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:32,531 INFO L146 ILogger]: Trace formula consists of 262 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:32,534 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:32,696 INFO L146 ILogger]: Checked inductivity of 94 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:32,726 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:32,727 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:32,727 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:32,727 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:32,728 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:32,728 INFO L146 ILogger]: Start difference. First operand 269 states and 284 transitions. Second operand 20 states. [2019-05-23 11:30:34,002 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:34,002 INFO L146 ILogger]: Finished difference Result 611 states and 645 transitions. [2019-05-23 11:30:34,003 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:34,003 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 164 [2019-05-23 11:30:34,003 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:34,008 INFO L146 ILogger]: With dead ends: 611 [2019-05-23 11:30:34,008 INFO L146 ILogger]: Without dead ends: 534 [2019-05-23 11:30:34,009 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:34,010 INFO L146 ILogger]: Start minimizeSevpa. Operand 534 states. [2019-05-23 11:30:34,024 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 534 to 393. [2019-05-23 11:30:34,024 INFO L146 ILogger]: Start removeUnreachable. Operand 393 states. [2019-05-23 11:30:34,025 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 393 states to 393 states and 415 transitions. [2019-05-23 11:30:34,025 INFO L146 ILogger]: Start accepts. Automaton has 393 states and 415 transitions. Word has length 164 [2019-05-23 11:30:34,026 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:34,026 INFO L146 ILogger]: Abstraction has 393 states and 415 transitions. [2019-05-23 11:30:34,026 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:34,026 INFO L146 ILogger]: Start isEmpty. Operand 393 states and 415 transitions. [2019-05-23 11:30:34,028 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:30:34,028 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:34,028 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:34,028 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:34,029 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:34,029 INFO L146 ILogger]: Analyzing trace with hash -1768269132, now seen corresponding path program 11 times [2019-05-23 11:30:34,029 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:34,029 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:34,030 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:34,030 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:34,030 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:34,044 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:34,225 INFO L146 ILogger]: Checked inductivity of 94 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-05-23 11:30:34,225 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:34,225 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:34,234 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:34,283 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:34,283 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:34,285 INFO L146 ILogger]: Trace formula consists of 264 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:34,288 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:34,840 INFO L146 ILogger]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-05-23 11:30:34,858 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:34,858 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:34,859 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:34,859 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:34,860 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:34,860 INFO L146 ILogger]: Start difference. First operand 393 states and 415 transitions. Second operand 21 states. [2019-05-23 11:30:35,583 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:35,584 INFO L146 ILogger]: Finished difference Result 557 states and 586 transitions. [2019-05-23 11:30:35,584 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:35,584 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 164 [2019-05-23 11:30:35,585 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:35,588 INFO L146 ILogger]: With dead ends: 557 [2019-05-23 11:30:35,588 INFO L146 ILogger]: Without dead ends: 528 [2019-05-23 11:30:35,590 INFO L146 ILogger]: 0 DeclaredPredicates, 200 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:35,590 INFO L146 ILogger]: Start minimizeSevpa. Operand 528 states. [2019-05-23 11:30:35,604 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 528 to 494. [2019-05-23 11:30:35,604 INFO L146 ILogger]: Start removeUnreachable. Operand 494 states. [2019-05-23 11:30:35,606 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 494 states to 494 states and 522 transitions. [2019-05-23 11:30:35,606 INFO L146 ILogger]: Start accepts. Automaton has 494 states and 522 transitions. Word has length 164 [2019-05-23 11:30:35,606 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:35,606 INFO L146 ILogger]: Abstraction has 494 states and 522 transitions. [2019-05-23 11:30:35,606 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:35,607 INFO L146 ILogger]: Start isEmpty. Operand 494 states and 522 transitions. [2019-05-23 11:30:35,608 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:30:35,608 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:35,608 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:35,609 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:35,609 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:35,609 INFO L146 ILogger]: Analyzing trace with hash -1245365381, now seen corresponding path program 12 times [2019-05-23 11:30:35,609 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:35,609 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:35,610 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:35,610 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:35,610 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:35,623 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:35,803 INFO L146 ILogger]: Checked inductivity of 94 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:35,803 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:35,803 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:35,811 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:35,852 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:35,853 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:35,854 INFO L146 ILogger]: Trace formula consists of 264 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:35,856 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:35,989 INFO L146 ILogger]: Checked inductivity of 94 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:36,006 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:36,007 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:36,007 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:36,007 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:36,008 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:36,008 INFO L146 ILogger]: Start difference. First operand 494 states and 522 transitions. Second operand 20 states. [2019-05-23 11:30:37,180 WARN L146 ILogger]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2019-05-23 11:30:37,379 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:37,380 INFO L146 ILogger]: Finished difference Result 721 states and 758 transitions. [2019-05-23 11:30:37,380 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:37,380 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 164 [2019-05-23 11:30:37,381 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:37,383 INFO L146 ILogger]: With dead ends: 721 [2019-05-23 11:30:37,384 INFO L146 ILogger]: Without dead ends: 653 [2019-05-23 11:30:37,384 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:37,386 INFO L146 ILogger]: Start minimizeSevpa. Operand 653 states. [2019-05-23 11:30:37,400 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 653 to 543. [2019-05-23 11:30:37,401 INFO L146 ILogger]: Start removeUnreachable. Operand 543 states. [2019-05-23 11:30:37,402 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 543 states to 543 states and 573 transitions. [2019-05-23 11:30:37,402 INFO L146 ILogger]: Start accepts. Automaton has 543 states and 573 transitions. Word has length 164 [2019-05-23 11:30:37,403 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:37,403 INFO L146 ILogger]: Abstraction has 543 states and 573 transitions. [2019-05-23 11:30:37,403 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:37,403 INFO L146 ILogger]: Start isEmpty. Operand 543 states and 573 transitions. [2019-05-23 11:30:37,405 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:30:37,405 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:37,405 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:37,405 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:37,405 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:37,406 INFO L146 ILogger]: Analyzing trace with hash -1757696446, now seen corresponding path program 13 times [2019-05-23 11:30:37,406 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:37,406 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:37,407 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:37,407 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:37,407 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:37,420 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:37,659 INFO L146 ILogger]: Checked inductivity of 94 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:37,659 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:37,659 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:37,668 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:37,706 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:37,707 INFO L146 ILogger]: Trace formula consists of 264 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:37,710 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:37,815 INFO L146 ILogger]: Checked inductivity of 94 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:37,833 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:37,834 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:37,834 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:37,834 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:37,834 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:37,835 INFO L146 ILogger]: Start difference. First operand 543 states and 573 transitions. Second operand 20 states. [2019-05-23 11:30:38,613 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:38,614 INFO L146 ILogger]: Finished difference Result 627 states and 656 transitions. [2019-05-23 11:30:38,615 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:38,615 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 164 [2019-05-23 11:30:38,616 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:38,618 INFO L146 ILogger]: With dead ends: 627 [2019-05-23 11:30:38,618 INFO L146 ILogger]: Without dead ends: 566 [2019-05-23 11:30:38,619 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:38,619 INFO L146 ILogger]: Start minimizeSevpa. Operand 566 states. [2019-05-23 11:30:38,633 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 566 to 527. [2019-05-23 11:30:38,633 INFO L146 ILogger]: Start removeUnreachable. Operand 527 states. [2019-05-23 11:30:38,634 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 527 states to 527 states and 555 transitions. [2019-05-23 11:30:38,634 INFO L146 ILogger]: Start accepts. Automaton has 527 states and 555 transitions. Word has length 164 [2019-05-23 11:30:38,635 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:38,635 INFO L146 ILogger]: Abstraction has 527 states and 555 transitions. [2019-05-23 11:30:38,635 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:38,635 INFO L146 ILogger]: Start isEmpty. Operand 527 states and 555 transitions. [2019-05-23 11:30:38,636 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:30:38,637 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:38,637 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:38,637 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:38,637 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:38,638 INFO L146 ILogger]: Analyzing trace with hash 630829833, now seen corresponding path program 14 times [2019-05-23 11:30:38,638 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:38,638 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:38,638 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,639 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:38,639 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,651 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:38,825 INFO L146 ILogger]: Checked inductivity of 94 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:38,825 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:38,825 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:38,833 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:38,872 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:38,872 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:38,874 INFO L146 ILogger]: Trace formula consists of 264 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:38,875 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:38,995 INFO L146 ILogger]: Checked inductivity of 94 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:39,014 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:39,014 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:39,014 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:39,014 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:39,015 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:39,015 INFO L146 ILogger]: Start difference. First operand 527 states and 555 transitions. Second operand 20 states. [2019-05-23 11:30:39,668 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:39,668 INFO L146 ILogger]: Finished difference Result 627 states and 654 transitions. [2019-05-23 11:30:39,669 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:39,669 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 164 [2019-05-23 11:30:39,669 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:39,672 INFO L146 ILogger]: With dead ends: 627 [2019-05-23 11:30:39,672 INFO L146 ILogger]: Without dead ends: 534 [2019-05-23 11:30:39,673 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:39,674 INFO L146 ILogger]: Start minimizeSevpa. Operand 534 states. [2019-05-23 11:30:39,686 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 534 to 495. [2019-05-23 11:30:39,687 INFO L146 ILogger]: Start removeUnreachable. Operand 495 states. [2019-05-23 11:30:39,688 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 495 states to 495 states and 521 transitions. [2019-05-23 11:30:39,688 INFO L146 ILogger]: Start accepts. Automaton has 495 states and 521 transitions. Word has length 164 [2019-05-23 11:30:39,688 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:39,688 INFO L146 ILogger]: Abstraction has 495 states and 521 transitions. [2019-05-23 11:30:39,689 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:39,689 INFO L146 ILogger]: Start isEmpty. Operand 495 states and 521 transitions. [2019-05-23 11:30:39,690 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:30:39,690 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:39,690 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:39,691 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:39,691 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:39,691 INFO L146 ILogger]: Analyzing trace with hash 1534882455, now seen corresponding path program 15 times [2019-05-23 11:30:39,691 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:39,691 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:39,692 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:39,692 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:39,692 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:39,705 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:40,067 INFO L146 ILogger]: Checked inductivity of 94 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:40,067 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:40,067 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:40,075 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:40,121 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:40,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:40,122 INFO L146 ILogger]: Trace formula consists of 264 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:40,124 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:40,380 INFO L146 ILogger]: Checked inductivity of 94 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-05-23 11:30:40,399 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:40,399 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:40,400 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:40,400 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:40,400 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:40,400 INFO L146 ILogger]: Start difference. First operand 495 states and 521 transitions. Second operand 24 states. [2019-05-23 11:30:41,883 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:41,883 INFO L146 ILogger]: Finished difference Result 638 states and 662 transitions. [2019-05-23 11:30:41,884 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:30:41,884 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 164 [2019-05-23 11:30:41,884 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:41,887 INFO L146 ILogger]: With dead ends: 638 [2019-05-23 11:30:41,887 INFO L146 ILogger]: Without dead ends: 529 [2019-05-23 11:30:41,889 INFO L146 ILogger]: 0 DeclaredPredicates, 205 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:30:41,889 INFO L146 ILogger]: Start minimizeSevpa. Operand 529 states. [2019-05-23 11:30:41,902 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 529 to 479. [2019-05-23 11:30:41,902 INFO L146 ILogger]: Start removeUnreachable. Operand 479 states. [2019-05-23 11:30:41,903 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 479 states to 479 states and 502 transitions. [2019-05-23 11:30:41,903 INFO L146 ILogger]: Start accepts. Automaton has 479 states and 502 transitions. Word has length 164 [2019-05-23 11:30:41,903 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:41,903 INFO L146 ILogger]: Abstraction has 479 states and 502 transitions. [2019-05-23 11:30:41,904 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:41,904 INFO L146 ILogger]: Start isEmpty. Operand 479 states and 502 transitions. [2019-05-23 11:30:41,905 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:30:41,905 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:41,905 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:41,906 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:41,906 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:41,906 INFO L146 ILogger]: Analyzing trace with hash 1077488990, now seen corresponding path program 16 times [2019-05-23 11:30:41,906 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:41,906 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:41,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,907 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:41,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,921 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:42,574 INFO L146 ILogger]: Checked inductivity of 94 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:42,574 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:42,574 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:42,583 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:42,622 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:42,623 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:42,623 INFO L146 ILogger]: Trace formula consists of 262 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:42,626 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:42,821 INFO L146 ILogger]: Checked inductivity of 94 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:42,852 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:42,852 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:42,853 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:42,853 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:42,853 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:42,853 INFO L146 ILogger]: Start difference. First operand 479 states and 502 transitions. Second operand 20 states. [2019-05-23 11:30:43,623 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:43,624 INFO L146 ILogger]: Finished difference Result 627 states and 649 transitions. [2019-05-23 11:30:43,624 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:43,625 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 164 [2019-05-23 11:30:43,625 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:43,627 INFO L146 ILogger]: With dead ends: 627 [2019-05-23 11:30:43,627 INFO L146 ILogger]: Without dead ends: 502 [2019-05-23 11:30:43,628 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:43,629 INFO L146 ILogger]: Start minimizeSevpa. Operand 502 states. [2019-05-23 11:30:43,640 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 502 to 471. [2019-05-23 11:30:43,641 INFO L146 ILogger]: Start removeUnreachable. Operand 471 states. [2019-05-23 11:30:43,642 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 471 states to 471 states and 492 transitions. [2019-05-23 11:30:43,642 INFO L146 ILogger]: Start accepts. Automaton has 471 states and 492 transitions. Word has length 164 [2019-05-23 11:30:43,642 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:43,642 INFO L146 ILogger]: Abstraction has 471 states and 492 transitions. [2019-05-23 11:30:43,642 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:43,642 INFO L146 ILogger]: Start isEmpty. Operand 471 states and 492 transitions. [2019-05-23 11:30:43,644 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:30:43,644 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:43,644 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:43,644 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:43,645 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:43,645 INFO L146 ILogger]: Analyzing trace with hash 1280145957, now seen corresponding path program 17 times [2019-05-23 11:30:43,645 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:43,645 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:43,646 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:43,646 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:43,646 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:43,658 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:43,819 INFO L146 ILogger]: Checked inductivity of 94 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:43,819 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:43,819 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:43,830 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:43,883 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:43,884 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:43,885 INFO L146 ILogger]: Trace formula consists of 264 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:43,886 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:44,034 INFO L146 ILogger]: Checked inductivity of 94 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-05-23 11:30:44,053 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:44,053 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:44,053 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:44,054 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:44,054 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:44,054 INFO L146 ILogger]: Start difference. First operand 471 states and 492 transitions. Second operand 24 states. [2019-05-23 11:30:45,388 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:45,388 INFO L146 ILogger]: Finished difference Result 694 states and 725 transitions. [2019-05-23 11:30:45,388 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:30:45,389 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 164 [2019-05-23 11:30:45,389 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:45,391 INFO L146 ILogger]: With dead ends: 694 [2019-05-23 11:30:45,391 INFO L146 ILogger]: Without dead ends: 489 [2019-05-23 11:30:45,393 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=309, Invalid=2043, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:30:45,394 INFO L146 ILogger]: Start minimizeSevpa. Operand 489 states. [2019-05-23 11:30:45,402 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 489 to 375. [2019-05-23 11:30:45,402 INFO L146 ILogger]: Start removeUnreachable. Operand 375 states. [2019-05-23 11:30:45,403 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 375 states to 375 states and 395 transitions. [2019-05-23 11:30:45,403 INFO L146 ILogger]: Start accepts. Automaton has 375 states and 395 transitions. Word has length 164 [2019-05-23 11:30:45,403 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:45,404 INFO L146 ILogger]: Abstraction has 375 states and 395 transitions. [2019-05-23 11:30:45,404 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:45,404 INFO L146 ILogger]: Start isEmpty. Operand 375 states and 395 transitions. [2019-05-23 11:30:45,405 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 170 [2019-05-23 11:30:45,405 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:45,405 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:45,405 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:45,406 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:45,406 INFO L146 ILogger]: Analyzing trace with hash 555817604, now seen corresponding path program 18 times [2019-05-23 11:30:45,406 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:45,406 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:45,407 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,407 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:45,407 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,420 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:45,736 INFO L146 ILogger]: Checked inductivity of 105 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:30:45,736 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:45,737 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:45,747 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:45,791 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:45,791 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:45,793 INFO L146 ILogger]: Trace formula consists of 271 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:45,795 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:45,949 INFO L146 ILogger]: Checked inductivity of 105 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:30:45,967 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:45,968 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:45,968 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:45,969 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:45,969 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:45,969 INFO L146 ILogger]: Start difference. First operand 375 states and 395 transitions. Second operand 20 states. [2019-05-23 11:30:46,642 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:46,642 INFO L146 ILogger]: Finished difference Result 480 states and 505 transitions. [2019-05-23 11:30:46,642 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:30:46,643 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 169 [2019-05-23 11:30:46,643 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:46,644 INFO L146 ILogger]: With dead ends: 480 [2019-05-23 11:30:46,644 INFO L146 ILogger]: Without dead ends: 189 [2019-05-23 11:30:46,646 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:30:46,646 INFO L146 ILogger]: Start minimizeSevpa. Operand 189 states. [2019-05-23 11:30:46,650 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 189 to 184. [2019-05-23 11:30:46,650 INFO L146 ILogger]: Start removeUnreachable. Operand 184 states. [2019-05-23 11:30:46,651 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 184 states to 184 states and 192 transitions. [2019-05-23 11:30:46,651 INFO L146 ILogger]: Start accepts. Automaton has 184 states and 192 transitions. Word has length 169 [2019-05-23 11:30:46,651 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:46,651 INFO L146 ILogger]: Abstraction has 184 states and 192 transitions. [2019-05-23 11:30:46,651 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:46,651 INFO L146 ILogger]: Start isEmpty. Operand 184 states and 192 transitions. [2019-05-23 11:30:46,652 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 184 [2019-05-23 11:30:46,652 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:46,652 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:46,653 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:46,653 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:46,653 INFO L146 ILogger]: Analyzing trace with hash 1964549501, now seen corresponding path program 19 times [2019-05-23 11:30:46,653 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:46,653 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:46,654 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,654 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:46,654 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,667 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:47,159 INFO L146 ILogger]: Checked inductivity of 135 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-05-23 11:30:47,159 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:47,159 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:47,179 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:47,221 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:47,222 INFO L146 ILogger]: Trace formula consists of 293 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:47,224 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:47,339 INFO L146 ILogger]: Checked inductivity of 135 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-05-23 11:30:47,357 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:47,358 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:47,358 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:47,358 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:47,359 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:47,359 INFO L146 ILogger]: Start difference. First operand 184 states and 192 transitions. Second operand 20 states. [2019-05-23 11:30:47,928 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:47,929 INFO L146 ILogger]: Finished difference Result 312 states and 326 transitions. [2019-05-23 11:30:47,930 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:47,930 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 183 [2019-05-23 11:30:47,931 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:47,932 INFO L146 ILogger]: With dead ends: 312 [2019-05-23 11:30:47,932 INFO L146 ILogger]: Without dead ends: 196 [2019-05-23 11:30:47,933 INFO L146 ILogger]: 0 DeclaredPredicates, 211 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:47,933 INFO L146 ILogger]: Start minimizeSevpa. Operand 196 states. [2019-05-23 11:30:47,937 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 196 to 191. [2019-05-23 11:30:47,937 INFO L146 ILogger]: Start removeUnreachable. Operand 191 states. [2019-05-23 11:30:47,938 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 191 states to 191 states and 199 transitions. [2019-05-23 11:30:47,938 INFO L146 ILogger]: Start accepts. Automaton has 191 states and 199 transitions. Word has length 183 [2019-05-23 11:30:47,938 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:47,938 INFO L146 ILogger]: Abstraction has 191 states and 199 transitions. [2019-05-23 11:30:47,938 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:47,939 INFO L146 ILogger]: Start isEmpty. Operand 191 states and 199 transitions. [2019-05-23 11:30:47,939 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 191 [2019-05-23 11:30:47,939 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:47,940 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:47,940 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:47,940 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:47,940 INFO L146 ILogger]: Analyzing trace with hash 755868870, now seen corresponding path program 20 times [2019-05-23 11:30:47,940 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:47,941 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:47,941 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:47,941 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:47,941 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:47,955 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:48,092 INFO L146 ILogger]: Checked inductivity of 150 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:30:48,092 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:48,092 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:48,100 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:48,170 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:48,170 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:48,172 INFO L146 ILogger]: Trace formula consists of 304 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:48,175 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:48,456 INFO L146 ILogger]: Checked inductivity of 150 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:30:48,474 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:48,474 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:48,475 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:48,475 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:48,475 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:48,475 INFO L146 ILogger]: Start difference. First operand 191 states and 199 transitions. Second operand 20 states. [2019-05-23 11:30:48,999 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:49,000 INFO L146 ILogger]: Finished difference Result 280 states and 292 transitions. [2019-05-23 11:30:49,000 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:49,000 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 190 [2019-05-23 11:30:49,001 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:49,002 INFO L146 ILogger]: With dead ends: 280 [2019-05-23 11:30:49,002 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:30:49,003 INFO L146 ILogger]: 0 DeclaredPredicates, 218 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:49,003 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:30:49,007 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 198. [2019-05-23 11:30:49,007 INFO L146 ILogger]: Start removeUnreachable. Operand 198 states. [2019-05-23 11:30:49,008 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 198 states to 198 states and 206 transitions. [2019-05-23 11:30:49,008 INFO L146 ILogger]: Start accepts. Automaton has 198 states and 206 transitions. Word has length 190 [2019-05-23 11:30:49,008 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:49,008 INFO L146 ILogger]: Abstraction has 198 states and 206 transitions. [2019-05-23 11:30:49,008 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:49,008 INFO L146 ILogger]: Start isEmpty. Operand 198 states and 206 transitions. [2019-05-23 11:30:49,009 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 198 [2019-05-23 11:30:49,009 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:49,010 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:49,010 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:49,010 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:49,010 INFO L146 ILogger]: Analyzing trace with hash -1055455875, now seen corresponding path program 21 times [2019-05-23 11:30:49,010 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:49,011 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:49,011 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:49,011 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:49,011 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:49,026 INFO L146 ILogger]: Conjunction of SSA is unsat