java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_copy3_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:14:16,473 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:14:16,475 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:14:16,495 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:14:16,496 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:14:16,497 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:14:16,499 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:14:16,501 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:14:16,505 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:14:16,507 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:14:16,508 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:14:16,509 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:14:16,510 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:14:16,511 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:14:16,518 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:14:16,519 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:14:16,522 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:14:16,527 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:14:16,529 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:14:16,533 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:14:16,534 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:14:16,535 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:14:16,540 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:14:16,540 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:14:16,541 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:14:16,542 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:14:16,543 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:14:16,544 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:14:16,545 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:14:16,546 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:14:16,546 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:14:16,549 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:14:16,550 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:14:16,551 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:14:16,551 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:14:16,552 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:14:16,552 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:14:16,554 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:14:16,556 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:14:16,556 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:14:16,582 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:14:16,583 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:14:16,584 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:14:16,584 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:14:16,584 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:14:16,585 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:14:16,585 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:14:16,585 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:14:16,585 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:14:16,585 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:14:16,586 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:14:16,586 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:14:16,586 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:14:16,586 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:14:16,586 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:14:16,586 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:14:16,587 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:14:16,587 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:14:16,587 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:14:16,587 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:14:16,587 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:14:16,588 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:14:16,588 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:14:16,588 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:14:16,588 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:14:16,589 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:14:16,589 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:14:16,589 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:14:16,589 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 11:14:16,620 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:14:16,633 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:14:16,638 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:14:16,640 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:14:16,640 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:14:16,641 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy3_false-unreach-call_ground.i [2019-05-23 11:14:16,703 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7d446d9/d903051fd4044873b57df97384fb1621/FLAG431cd278f [2019-05-23 11:14:17,116 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:14:17,116 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy3_false-unreach-call_ground.i [2019-05-23 11:14:17,121 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7d446d9/d903051fd4044873b57df97384fb1621/FLAG431cd278f [2019-05-23 11:14:17,537 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7d446d9/d903051fd4044873b57df97384fb1621 [2019-05-23 11:14:17,548 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:14:17,550 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:14:17,551 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,551 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:14:17,555 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:14:17,556 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,559 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551762ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17, skipping insertion in model container [2019-05-23 11:14:17,559 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,567 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:14:17,585 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:14:17,820 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,826 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:14:17,862 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,899 INFO L146 ILogger]: Completed translation [2019-05-23 11:14:17,900 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17 WrapperNode [2019-05-23 11:14:17,900 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,901 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,901 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:14:17,901 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:14:17,912 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,928 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,959 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,961 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,962 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:14:17,962 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:14:17,974 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,974 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,978 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,978 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:18,086 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:18,092 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:18,094 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:18,099 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:14:18,100 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:14:18,100 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:14:18,100 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:14:18,101 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (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 11:14:18,161 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:14:18,161 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:14:18,161 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:14:18,162 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:14:18,162 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:14:18,162 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:14:18,686 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:14:18,686 INFO L146 ILogger]: Removed 11 assume(true) statements. [2019-05-23 11:14:18,687 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18 BoogieIcfgContainer [2019-05-23 11:14:18,688 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:14:18,688 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:14:18,689 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:14:18,692 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:14:18,692 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:14:17" (1/3) ... [2019-05-23 11:14:18,693 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfa5241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:18, skipping insertion in model container [2019-05-23 11:14:18,693 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (2/3) ... [2019-05-23 11:14:18,693 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfa5241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:18, skipping insertion in model container [2019-05-23 11:14:18,694 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18" (3/3) ... [2019-05-23 11:14:18,695 INFO L146 ILogger]: Analyzing ICFG standard_copy3_false-unreach-call_ground.i [2019-05-23 11:14:18,705 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:14:18,713 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:14:18,730 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:14:18,760 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:14:18,760 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:14:18,761 INFO L146 ILogger]: Hoare is true [2019-05-23 11:14:18,761 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:14:18,761 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:14:18,761 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:14:18,762 INFO L146 ILogger]: Difference is false [2019-05-23 11:14:18,762 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:14:18,762 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:14:18,778 INFO L146 ILogger]: Start isEmpty. Operand 73 states. [2019-05-23 11:14:18,786 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:14:18,786 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,787 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] [2019-05-23 11:14:18,789 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,794 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,795 INFO L146 ILogger]: Analyzing trace with hash -92677361, now seen corresponding path program 1 times [2019-05-23 11:14:18,796 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,797 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,838 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,838 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,838 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,884 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,932 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 11:14:18,935 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:18,935 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:14:18,939 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:14:18,953 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:14:18,954 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:14:18,956 INFO L146 ILogger]: Start difference. First operand 73 states. Second operand 2 states. [2019-05-23 11:14:18,980 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:18,980 INFO L146 ILogger]: Finished difference Result 126 states and 144 transitions. [2019-05-23 11:14:18,980 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:14:18,982 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 28 [2019-05-23 11:14:18,982 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:18,991 INFO L146 ILogger]: With dead ends: 126 [2019-05-23 11:14:18,991 INFO L146 ILogger]: Without dead ends: 61 [2019-05-23 11:14:18,995 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 11:14:19,012 INFO L146 ILogger]: Start minimizeSevpa. Operand 61 states. [2019-05-23 11:14:19,030 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-05-23 11:14:19,031 INFO L146 ILogger]: Start removeUnreachable. Operand 61 states. [2019-05-23 11:14:19,033 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2019-05-23 11:14:19,035 INFO L146 ILogger]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 28 [2019-05-23 11:14:19,035 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,035 INFO L146 ILogger]: Abstraction has 61 states and 65 transitions. [2019-05-23 11:14:19,035 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:14:19,036 INFO L146 ILogger]: Start isEmpty. Operand 61 states and 65 transitions. [2019-05-23 11:14:19,037 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:14:19,037 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,037 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] [2019-05-23 11:14:19,038 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,038 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,038 INFO L146 ILogger]: Analyzing trace with hash 2023183470, now seen corresponding path program 1 times [2019-05-23 11:14:19,038 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,038 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,040 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,040 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,040 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,056 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,139 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 11:14:19,139 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:19,140 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:14:19,141 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:14:19,142 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:14:19,142 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:19,142 INFO L146 ILogger]: Start difference. First operand 61 states and 65 transitions. Second operand 3 states. [2019-05-23 11:14:19,273 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,273 INFO L146 ILogger]: Finished difference Result 111 states and 119 transitions. [2019-05-23 11:14:19,274 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:14:19,274 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 28 [2019-05-23 11:14:19,274 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,276 INFO L146 ILogger]: With dead ends: 111 [2019-05-23 11:14:19,276 INFO L146 ILogger]: Without dead ends: 70 [2019-05-23 11:14:19,277 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:19,278 INFO L146 ILogger]: Start minimizeSevpa. Operand 70 states. [2019-05-23 11:14:19,284 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 70 to 62. [2019-05-23 11:14:19,284 INFO L146 ILogger]: Start removeUnreachable. Operand 62 states. [2019-05-23 11:14:19,287 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2019-05-23 11:14:19,287 INFO L146 ILogger]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 28 [2019-05-23 11:14:19,288 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,288 INFO L146 ILogger]: Abstraction has 62 states and 66 transitions. [2019-05-23 11:14:19,288 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:14:19,288 INFO L146 ILogger]: Start isEmpty. Operand 62 states and 66 transitions. [2019-05-23 11:14:19,291 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:14:19,291 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,292 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] [2019-05-23 11:14:19,293 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,293 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,293 INFO L146 ILogger]: Analyzing trace with hash 1676979860, now seen corresponding path program 1 times [2019-05-23 11:14:19,293 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,293 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,294 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,295 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,296 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,338 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,500 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 11:14:19,501 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,501 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 11:14:19,515 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,561 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:14:19,568 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:19,697 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 11:14:19,718 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:14:19,718 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:14:19,719 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:14:19,719 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:14:19,719 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:14:19,720 INFO L146 ILogger]: Start difference. First operand 62 states and 66 transitions. Second operand 6 states. [2019-05-23 11:14:20,179 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:20,179 INFO L146 ILogger]: Finished difference Result 139 states and 150 transitions. [2019-05-23 11:14:20,181 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:14:20,181 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 38 [2019-05-23 11:14:20,182 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:20,183 INFO L146 ILogger]: With dead ends: 139 [2019-05-23 11:14:20,183 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:14:20,184 INFO L146 ILogger]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:14:20,185 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:14:20,191 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 75. [2019-05-23 11:14:20,192 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:14:20,193 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2019-05-23 11:14:20,193 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 38 [2019-05-23 11:14:20,194 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:20,194 INFO L146 ILogger]: Abstraction has 75 states and 79 transitions. [2019-05-23 11:14:20,194 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:14:20,194 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 79 transitions. [2019-05-23 11:14:20,196 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:14:20,196 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:20,197 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:20,197 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:20,197 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:20,198 INFO L146 ILogger]: Analyzing trace with hash 235768978, now seen corresponding path program 1 times [2019-05-23 11:14:20,198 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:20,198 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:20,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,199 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,200 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,222 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,318 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:14:20,318 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:20,318 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 11:14:20,338 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,376 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,377 INFO L146 ILogger]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:20,382 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:20,587 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:14:20,621 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:20,622 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:14:20,622 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:14:20,623 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:14:20,623 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:14:20,624 INFO L146 ILogger]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2019-05-23 11:14:21,194 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:21,195 INFO L146 ILogger]: Finished difference Result 159 states and 168 transitions. [2019-05-23 11:14:21,195 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:14:21,195 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 69 [2019-05-23 11:14:21,196 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:21,197 INFO L146 ILogger]: With dead ends: 159 [2019-05-23 11:14:21,198 INFO L146 ILogger]: Without dead ends: 115 [2019-05-23 11:14:21,198 INFO L146 ILogger]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:21,199 INFO L146 ILogger]: Start minimizeSevpa. Operand 115 states. [2019-05-23 11:14:21,209 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 115 to 92. [2019-05-23 11:14:21,211 INFO L146 ILogger]: Start removeUnreachable. Operand 92 states. [2019-05-23 11:14:21,212 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2019-05-23 11:14:21,216 INFO L146 ILogger]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 69 [2019-05-23 11:14:21,216 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:21,217 INFO L146 ILogger]: Abstraction has 92 states and 96 transitions. [2019-05-23 11:14:21,217 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:14:21,217 INFO L146 ILogger]: Start isEmpty. Operand 92 states and 96 transitions. [2019-05-23 11:14:21,219 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 87 [2019-05-23 11:14:21,220 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:21,220 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:21,220 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:21,220 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:21,221 INFO L146 ILogger]: Analyzing trace with hash 1428064231, now seen corresponding path program 2 times [2019-05-23 11:14:21,223 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:21,223 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:21,224 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,224 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:21,225 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,257 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,376 INFO L146 ILogger]: Checked inductivity of 44 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:14:21,376 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:21,377 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 11:14:21,385 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:21,421 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:21,421 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,422 INFO L146 ILogger]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:21,426 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:21,576 INFO L146 ILogger]: Checked inductivity of 44 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:14:21,606 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:21,607 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:14:21,607 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:14:21,608 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:14:21,608 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:14:21,608 INFO L146 ILogger]: Start difference. First operand 92 states and 96 transitions. Second operand 12 states. [2019-05-23 11:14:22,536 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:22,536 INFO L146 ILogger]: Finished difference Result 178 states and 187 transitions. [2019-05-23 11:14:22,537 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:14:22,537 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 86 [2019-05-23 11:14:22,537 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:22,539 INFO L146 ILogger]: With dead ends: 178 [2019-05-23 11:14:22,540 INFO L146 ILogger]: Without dead ends: 127 [2019-05-23 11:14:22,541 INFO L146 ILogger]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:14:22,541 INFO L146 ILogger]: Start minimizeSevpa. Operand 127 states. [2019-05-23 11:14:22,548 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 127 to 109. [2019-05-23 11:14:22,548 INFO L146 ILogger]: Start removeUnreachable. Operand 109 states. [2019-05-23 11:14:22,549 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2019-05-23 11:14:22,549 INFO L146 ILogger]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 86 [2019-05-23 11:14:22,550 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:22,550 INFO L146 ILogger]: Abstraction has 109 states and 113 transitions. [2019-05-23 11:14:22,550 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:14:22,550 INFO L146 ILogger]: Start isEmpty. Operand 109 states and 113 transitions. [2019-05-23 11:14:22,552 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:14:22,552 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:22,552 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 11:14:22,552 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:22,553 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:22,553 INFO L146 ILogger]: Analyzing trace with hash 1361835533, now seen corresponding path program 3 times [2019-05-23 11:14:22,553 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:22,553 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:22,554 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,554 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:22,554 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,579 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,699 INFO L146 ILogger]: Checked inductivity of 83 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-05-23 11:14:22,700 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:22,700 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 11:14:22,709 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:22,755 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:14:22,755 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,756 INFO L146 ILogger]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:14:22,760 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,013 INFO L146 ILogger]: Checked inductivity of 83 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-05-23 11:14:23,052 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:23,053 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:14:23,053 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:14:23,053 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:14:23,054 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:23,054 INFO L146 ILogger]: Start difference. First operand 109 states and 113 transitions. Second operand 7 states. [2019-05-23 11:14:23,255 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:23,255 INFO L146 ILogger]: Finished difference Result 137 states and 142 transitions. [2019-05-23 11:14:23,255 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:14:23,255 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 103 [2019-05-23 11:14:23,256 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,257 INFO L146 ILogger]: With dead ends: 137 [2019-05-23 11:14:23,257 INFO L146 ILogger]: Without dead ends: 121 [2019-05-23 11:14:23,258 INFO L146 ILogger]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:23,258 INFO L146 ILogger]: Start minimizeSevpa. Operand 121 states. [2019-05-23 11:14:23,264 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 121 to 116. [2019-05-23 11:14:23,265 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:14:23,266 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2019-05-23 11:14:23,266 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 103 [2019-05-23 11:14:23,266 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:23,266 INFO L146 ILogger]: Abstraction has 116 states and 120 transitions. [2019-05-23 11:14:23,266 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:14:23,267 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 120 transitions. [2019-05-23 11:14:23,268 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:14:23,268 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:23,269 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:14:23,269 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:23,269 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:23,269 INFO L146 ILogger]: Analyzing trace with hash 1742532614, now seen corresponding path program 4 times [2019-05-23 11:14:23,269 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:23,270 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,270 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,271 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:23,271 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,293 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,494 INFO L146 ILogger]: Checked inductivity of 91 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:14:23,495 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:23,495 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 11:14:23,506 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:23,655 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:23,656 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,657 INFO L146 ILogger]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:14:23,661 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,711 INFO L146 ILogger]: Checked inductivity of 91 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:14:23,734 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:23,734 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:14:23,734 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:14:23,735 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:14:23,735 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:14:23,735 INFO L146 ILogger]: Start difference. First operand 116 states and 120 transitions. Second operand 13 states. [2019-05-23 11:14:23,970 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:23,971 INFO L146 ILogger]: Finished difference Result 199 states and 207 transitions. [2019-05-23 11:14:23,974 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:14:23,974 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 110 [2019-05-23 11:14:23,974 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,975 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:14:23,975 INFO L146 ILogger]: Without dead ends: 134 [2019-05-23 11:14:23,976 INFO L146 ILogger]: 0 DeclaredPredicates, 128 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:23,976 INFO L146 ILogger]: Start minimizeSevpa. Operand 134 states. [2019-05-23 11:14:23,982 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 134 to 126. [2019-05-23 11:14:23,982 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:14:23,983 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2019-05-23 11:14:23,983 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 110 [2019-05-23 11:14:23,983 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:23,984 INFO L146 ILogger]: Abstraction has 126 states and 130 transitions. [2019-05-23 11:14:23,984 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:14:23,984 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 130 transitions. [2019-05-23 11:14:23,986 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:14:23,986 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:23,986 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2019-05-23 11:14:23,986 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:23,987 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:23,987 INFO L146 ILogger]: Analyzing trace with hash 350887084, now seen corresponding path program 5 times [2019-05-23 11:14:23,987 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:23,987 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,988 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,988 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:23,988 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,011 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,172 INFO L146 ILogger]: Checked inductivity of 132 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:14:24,172 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:24,172 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 11:14:24,181 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:24,619 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:14:24,620 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,621 INFO L146 ILogger]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:24,625 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:24,722 INFO L146 ILogger]: Checked inductivity of 132 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:14:24,742 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:24,742 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2019-05-23 11:14:24,742 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:14:24,743 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:14:24,744 INFO L146 ILogger]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:14:24,744 INFO L146 ILogger]: Start difference. First operand 126 states and 130 transitions. Second operand 18 states. [2019-05-23 11:14:25,459 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:25,460 INFO L146 ILogger]: Finished difference Result 221 states and 230 transitions. [2019-05-23 11:14:25,460 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:14:25,460 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 120 [2019-05-23 11:14:25,461 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:25,462 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:14:25,462 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:14:25,464 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:14:25,465 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:14:25,470 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 143. [2019-05-23 11:14:25,471 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:14:25,471 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2019-05-23 11:14:25,472 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 120 [2019-05-23 11:14:25,472 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:25,472 INFO L146 ILogger]: Abstraction has 143 states and 147 transitions. [2019-05-23 11:14:25,472 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:14:25,472 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 147 transitions. [2019-05-23 11:14:25,474 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:14:25,474 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:25,475 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:25,475 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:25,475 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:25,475 INFO L146 ILogger]: Analyzing trace with hash 2079055009, now seen corresponding path program 6 times [2019-05-23 11:14:25,476 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:25,476 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:25,477 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:25,477 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:25,477 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:25,500 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,311 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-05-23 11:14:26,311 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:26,312 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 11:14:26,320 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:26,399 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:14:26,399 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,400 INFO L146 ILogger]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:26,403 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:26,493 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-05-23 11:14:26,512 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:26,512 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2019-05-23 11:14:26,512 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:14:26,513 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:14:26,513 INFO L146 ILogger]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:14:26,513 INFO L146 ILogger]: Start difference. First operand 143 states and 147 transitions. Second operand 20 states. [2019-05-23 11:14:26,941 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:26,942 INFO L146 ILogger]: Finished difference Result 245 states and 254 transitions. [2019-05-23 11:14:26,942 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:14:26,943 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 137 [2019-05-23 11:14:26,943 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:26,944 INFO L146 ILogger]: With dead ends: 245 [2019-05-23 11:14:26,945 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:14:26,946 INFO L146 ILogger]: 0 DeclaredPredicates, 167 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:14:26,946 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:14:26,952 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 160. [2019-05-23 11:14:26,952 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:14:26,962 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 164 transitions. [2019-05-23 11:14:26,963 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 164 transitions. Word has length 137 [2019-05-23 11:14:26,964 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:26,964 INFO L146 ILogger]: Abstraction has 160 states and 164 transitions. [2019-05-23 11:14:26,964 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:14:26,964 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 164 transitions. [2019-05-23 11:14:26,966 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 155 [2019-05-23 11:14:26,966 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:26,966 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:26,967 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:26,967 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:26,967 INFO L146 ILogger]: Analyzing trace with hash -822793050, now seen corresponding path program 7 times [2019-05-23 11:14:26,967 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:26,968 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:26,968 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,968 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:26,969 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,017 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,428 INFO L146 ILogger]: Checked inductivity of 274 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:14:27,428 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:27,428 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 11:14:27,439 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:27,472 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,473 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:14:27,476 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:27,512 INFO L146 ILogger]: Checked inductivity of 274 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:14:27,531 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:27,532 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:14:27,532 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:14:27,532 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:14:27,533 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:14:27,533 INFO L146 ILogger]: Start difference. First operand 160 states and 164 transitions. Second operand 19 states. [2019-05-23 11:14:27,965 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:27,965 INFO L146 ILogger]: Finished difference Result 257 states and 265 transitions. [2019-05-23 11:14:27,968 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:14:27,968 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 154 [2019-05-23 11:14:27,968 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:27,969 INFO L146 ILogger]: With dead ends: 257 [2019-05-23 11:14:27,969 INFO L146 ILogger]: Without dead ends: 178 [2019-05-23 11:14:27,970 INFO L146 ILogger]: 0 DeclaredPredicates, 184 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:27,971 INFO L146 ILogger]: Start minimizeSevpa. Operand 178 states. [2019-05-23 11:14:27,975 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 178 to 170. [2019-05-23 11:14:27,975 INFO L146 ILogger]: Start removeUnreachable. Operand 170 states. [2019-05-23 11:14:27,976 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2019-05-23 11:14:27,976 INFO L146 ILogger]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 154 [2019-05-23 11:14:27,976 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:27,976 INFO L146 ILogger]: Abstraction has 170 states and 174 transitions. [2019-05-23 11:14:27,977 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:14:27,977 INFO L146 ILogger]: Start isEmpty. Operand 170 states and 174 transitions. [2019-05-23 11:14:27,979 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:14:27,979 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:27,979 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:27,980 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:27,980 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:27,980 INFO L146 ILogger]: Analyzing trace with hash -1037141940, now seen corresponding path program 8 times [2019-05-23 11:14:27,980 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:27,980 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:27,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,981 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:27,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,008 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,362 INFO L146 ILogger]: Checked inductivity of 345 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:14:28,362 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:28,362 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 11:14:28,371 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:28,413 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:28,413 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,414 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:14:28,417 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:28,477 INFO L146 ILogger]: Checked inductivity of 345 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:14:28,496 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:28,496 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:14:28,497 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:14:28,497 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:14:28,497 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:28,498 INFO L146 ILogger]: Start difference. First operand 170 states and 174 transitions. Second operand 21 states. [2019-05-23 11:14:28,838 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:28,838 INFO L146 ILogger]: Finished difference Result 267 states and 275 transitions. [2019-05-23 11:14:28,845 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:14:28,845 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 164 [2019-05-23 11:14:28,845 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:28,846 INFO L146 ILogger]: With dead ends: 267 [2019-05-23 11:14:28,847 INFO L146 ILogger]: Without dead ends: 188 [2019-05-23 11:14:28,847 INFO L146 ILogger]: 0 DeclaredPredicates, 198 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:14:28,849 INFO L146 ILogger]: Start minimizeSevpa. Operand 188 states. [2019-05-23 11:14:28,852 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 188 to 180. [2019-05-23 11:14:28,853 INFO L146 ILogger]: Start removeUnreachable. Operand 180 states. [2019-05-23 11:14:28,853 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 180 states to 180 states and 184 transitions. [2019-05-23 11:14:28,854 INFO L146 ILogger]: Start accepts. Automaton has 180 states and 184 transitions. Word has length 164 [2019-05-23 11:14:28,854 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:28,854 INFO L146 ILogger]: Abstraction has 180 states and 184 transitions. [2019-05-23 11:14:28,854 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:14:28,854 INFO L146 ILogger]: Start isEmpty. Operand 180 states and 184 transitions. [2019-05-23 11:14:28,861 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 175 [2019-05-23 11:14:28,861 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:28,865 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:28,865 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:28,866 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:28,866 INFO L146 ILogger]: Analyzing trace with hash 1322380402, now seen corresponding path program 9 times [2019-05-23 11:14:28,866 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:28,866 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:28,867 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,867 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:28,867 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,893 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,827 INFO L146 ILogger]: Checked inductivity of 426 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:14:29,827 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:29,827 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 11:14:29,836 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:29,868 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:14:29,869 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,869 INFO L146 ILogger]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:29,871 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:29,967 INFO L146 ILogger]: Checked inductivity of 426 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2019-05-23 11:14:29,986 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:29,986 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7] total 26 [2019-05-23 11:14:29,987 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:14:29,987 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:14:29,988 INFO L146 ILogger]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:14:29,988 INFO L146 ILogger]: Start difference. First operand 180 states and 184 transitions. Second operand 26 states. [2019-05-23 11:14:30,767 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:30,767 INFO L146 ILogger]: Finished difference Result 289 states and 298 transitions. [2019-05-23 11:14:30,767 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:14:30,768 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 174 [2019-05-23 11:14:30,768 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:30,769 INFO L146 ILogger]: With dead ends: 289 [2019-05-23 11:14:30,769 INFO L146 ILogger]: Without dead ends: 210 [2019-05-23 11:14:30,770 INFO L146 ILogger]: 0 DeclaredPredicates, 216 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=540, Invalid=1716, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:14:30,771 INFO L146 ILogger]: Start minimizeSevpa. Operand 210 states. [2019-05-23 11:14:30,774 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 210 to 197. [2019-05-23 11:14:30,774 INFO L146 ILogger]: Start removeUnreachable. Operand 197 states. [2019-05-23 11:14:30,775 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 197 states to 197 states and 201 transitions. [2019-05-23 11:14:30,775 INFO L146 ILogger]: Start accepts. Automaton has 197 states and 201 transitions. Word has length 174 [2019-05-23 11:14:30,776 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:30,776 INFO L146 ILogger]: Abstraction has 197 states and 201 transitions. [2019-05-23 11:14:30,776 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:14:30,776 INFO L146 ILogger]: Start isEmpty. Operand 197 states and 201 transitions. [2019-05-23 11:14:30,778 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 192 [2019-05-23 11:14:30,778 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:30,778 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:30,779 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:30,779 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:30,779 INFO L146 ILogger]: Analyzing trace with hash 119306466, now seen corresponding path program 10 times [2019-05-23 11:14:30,779 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:30,779 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:30,780 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:30,780 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:30,780 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:30,801 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:31,059 INFO L146 ILogger]: Checked inductivity of 532 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:14:31,060 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:31,060 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 11:14:31,072 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:32,082 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:32,082 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:32,085 INFO L146 ILogger]: Trace formula consists of 301 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:14:32,087 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:32,176 INFO L146 ILogger]: Checked inductivity of 532 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:14:32,205 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:32,206 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:14:32,206 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:14:32,207 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:14:32,207 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:14:32,207 INFO L146 ILogger]: Start difference. First operand 197 states and 201 transitions. Second operand 25 states. [2019-05-23 11:14:32,846 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:32,846 INFO L146 ILogger]: Finished difference Result 301 states and 309 transitions. [2019-05-23 11:14:32,852 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:14:32,852 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 191 [2019-05-23 11:14:32,852 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:32,853 INFO L146 ILogger]: With dead ends: 301 [2019-05-23 11:14:32,853 INFO L146 ILogger]: Without dead ends: 215 [2019-05-23 11:14:32,855 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:14:32,855 INFO L146 ILogger]: Start minimizeSevpa. Operand 215 states. [2019-05-23 11:14:32,858 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 215 to 207. [2019-05-23 11:14:32,859 INFO L146 ILogger]: Start removeUnreachable. Operand 207 states. [2019-05-23 11:14:32,859 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 207 states to 207 states and 211 transitions. [2019-05-23 11:14:32,860 INFO L146 ILogger]: Start accepts. Automaton has 207 states and 211 transitions. Word has length 191 [2019-05-23 11:14:32,860 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:32,860 INFO L146 ILogger]: Abstraction has 207 states and 211 transitions. [2019-05-23 11:14:32,860 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:14:32,860 INFO L146 ILogger]: Start isEmpty. Operand 207 states and 211 transitions. [2019-05-23 11:14:32,862 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 202 [2019-05-23 11:14:32,862 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:32,862 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:32,863 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:32,863 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:32,863 INFO L146 ILogger]: Analyzing trace with hash 586652924, now seen corresponding path program 11 times [2019-05-23 11:14:32,863 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:32,863 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:32,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:32,864 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:32,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:32,886 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:33,308 INFO L146 ILogger]: Checked inductivity of 633 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:14:33,309 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:33,309 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 11:14:33,317 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:52,693 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:14:52,693 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:52,706 INFO L146 ILogger]: Trace formula consists of 315 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:52,708 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:52,963 INFO L146 ILogger]: Checked inductivity of 633 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2019-05-23 11:14:52,985 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:52,986 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9] total 32 [2019-05-23 11:14:52,986 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:14:52,986 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:14:52,987 INFO L146 ILogger]: CoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:14:52,987 INFO L146 ILogger]: Start difference. First operand 207 states and 211 transitions. Second operand 32 states. [2019-05-23 11:14:54,072 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:54,073 INFO L146 ILogger]: Finished difference Result 323 states and 332 transitions. [2019-05-23 11:14:54,073 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:14:54,074 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 201 [2019-05-23 11:14:54,074 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:54,075 INFO L146 ILogger]: With dead ends: 323 [2019-05-23 11:14:54,075 INFO L146 ILogger]: Without dead ends: 237 [2019-05-23 11:14:54,077 INFO L146 ILogger]: 0 DeclaredPredicates, 253 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=795, Invalid=2745, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:14:54,077 INFO L146 ILogger]: Start minimizeSevpa. Operand 237 states. [2019-05-23 11:14:54,080 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 237 to 224. [2019-05-23 11:14:54,081 INFO L146 ILogger]: Start removeUnreachable. Operand 224 states. [2019-05-23 11:14:54,081 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 224 states to 224 states and 228 transitions. [2019-05-23 11:14:54,082 INFO L146 ILogger]: Start accepts. Automaton has 224 states and 228 transitions. Word has length 201 [2019-05-23 11:14:54,082 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:54,082 INFO L146 ILogger]: Abstraction has 224 states and 228 transitions. [2019-05-23 11:14:54,082 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:14:54,082 INFO L146 ILogger]: Start isEmpty. Operand 224 states and 228 transitions. [2019-05-23 11:14:54,084 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 219 [2019-05-23 11:14:54,084 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:54,085 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:54,085 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:54,085 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:54,085 INFO L146 ILogger]: Analyzing trace with hash 1726521725, now seen corresponding path program 12 times [2019-05-23 11:14:54,085 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:54,086 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:54,086 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:54,087 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:54,087 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:54,106 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:54,520 INFO L146 ILogger]: Checked inductivity of 766 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-05-23 11:14:54,520 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:54,520 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 11:14:54,529 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:55,006 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:14:55,007 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:55,009 INFO L146 ILogger]: Trace formula consists of 245 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:14:55,013 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:55,266 INFO L146 ILogger]: Checked inductivity of 766 backedges. 111 proven. 24 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2019-05-23 11:14:55,285 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:55,286 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 12] total 37 [2019-05-23 11:14:55,286 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:14:55,287 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:14:55,287 INFO L146 ILogger]: CoverageRelationStatistics Valid=263, Invalid=1069, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:14:55,287 INFO L146 ILogger]: Start difference. First operand 224 states and 228 transitions. Second operand 37 states. [2019-05-23 11:14:56,849 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:56,850 INFO L146 ILogger]: Finished difference Result 347 states and 356 transitions. [2019-05-23 11:14:56,850 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:14:56,850 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 218 [2019-05-23 11:14:56,851 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:56,852 INFO L146 ILogger]: With dead ends: 347 [2019-05-23 11:14:56,852 INFO L146 ILogger]: Without dead ends: 254 [2019-05-23 11:14:56,854 INFO L146 ILogger]: 0 DeclaredPredicates, 282 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1176, Invalid=4226, Unknown=0, NotChecked=0, Total=5402 [2019-05-23 11:14:56,854 INFO L146 ILogger]: Start minimizeSevpa. Operand 254 states. [2019-05-23 11:14:56,858 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 254 to 241. [2019-05-23 11:14:56,859 INFO L146 ILogger]: Start removeUnreachable. Operand 241 states. [2019-05-23 11:14:56,859 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2019-05-23 11:14:56,859 INFO L146 ILogger]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 218 [2019-05-23 11:14:56,860 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:56,860 INFO L146 ILogger]: Abstraction has 241 states and 245 transitions. [2019-05-23 11:14:56,860 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:14:56,860 INFO L146 ILogger]: Start isEmpty. Operand 241 states and 245 transitions. [2019-05-23 11:14:56,861 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 236 [2019-05-23 11:14:56,861 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:56,862 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:56,862 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:56,862 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:56,862 INFO L146 ILogger]: Analyzing trace with hash -1847061897, now seen corresponding path program 13 times [2019-05-23 11:14:56,862 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:56,863 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:56,863 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:56,863 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:56,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:56,885 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,300 INFO L146 ILogger]: Checked inductivity of 909 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:14:57,301 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:57,301 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 11:14:57,309 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:57,364 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,366 INFO L146 ILogger]: Trace formula consists of 363 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:14:57,369 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:57,469 INFO L146 ILogger]: Checked inductivity of 909 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:14:57,488 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:57,488 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:14:57,488 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:14:57,489 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:14:57,490 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:14:57,490 INFO L146 ILogger]: Start difference. First operand 241 states and 245 transitions. Second operand 31 states. [2019-05-23 11:14:58,599 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:58,600 INFO L146 ILogger]: Finished difference Result 359 states and 367 transitions. [2019-05-23 11:14:58,600 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:14:58,601 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 235 [2019-05-23 11:14:58,601 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:58,603 INFO L146 ILogger]: With dead ends: 359 [2019-05-23 11:14:58,603 INFO L146 ILogger]: Without dead ends: 259 [2019-05-23 11:14:58,605 INFO L146 ILogger]: 0 DeclaredPredicates, 289 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:14:58,606 INFO L146 ILogger]: Start minimizeSevpa. Operand 259 states. [2019-05-23 11:14:58,612 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 259 to 251. [2019-05-23 11:14:58,615 INFO L146 ILogger]: Start removeUnreachable. Operand 251 states. [2019-05-23 11:14:58,616 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 251 states to 251 states and 255 transitions. [2019-05-23 11:14:58,616 INFO L146 ILogger]: Start accepts. Automaton has 251 states and 255 transitions. Word has length 235 [2019-05-23 11:14:58,617 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:58,617 INFO L146 ILogger]: Abstraction has 251 states and 255 transitions. [2019-05-23 11:14:58,617 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:14:58,618 INFO L146 ILogger]: Start isEmpty. Operand 251 states and 255 transitions. [2019-05-23 11:14:58,620 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 246 [2019-05-23 11:14:58,620 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:58,621 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:58,621 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:58,621 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:58,621 INFO L146 ILogger]: Analyzing trace with hash -521078895, now seen corresponding path program 14 times [2019-05-23 11:14:58,622 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:58,622 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:58,623 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:58,623 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:58,623 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:58,655 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:59,648 INFO L146 ILogger]: Checked inductivity of 1040 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:14:59,649 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:59,649 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 11:14:59,657 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:59,705 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:59,705 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:59,706 INFO L146 ILogger]: Trace formula consists of 377 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:14:59,709 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:59,795 INFO L146 ILogger]: Checked inductivity of 1040 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:14:59,813 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:59,814 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:14:59,814 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:14:59,815 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:14:59,815 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:59,815 INFO L146 ILogger]: Start difference. First operand 251 states and 255 transitions. Second operand 33 states. [2019-05-23 11:15:00,460 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:00,460 INFO L146 ILogger]: Finished difference Result 369 states and 377 transitions. [2019-05-23 11:15:00,461 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:15:00,461 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 245 [2019-05-23 11:15:00,461 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:00,463 INFO L146 ILogger]: With dead ends: 369 [2019-05-23 11:15:00,463 INFO L146 ILogger]: Without dead ends: 269 [2019-05-23 11:15:00,465 INFO L146 ILogger]: 0 DeclaredPredicates, 303 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:15:00,465 INFO L146 ILogger]: Start minimizeSevpa. Operand 269 states. [2019-05-23 11:15:00,469 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 269 to 261. [2019-05-23 11:15:00,470 INFO L146 ILogger]: Start removeUnreachable. Operand 261 states. [2019-05-23 11:15:00,470 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2019-05-23 11:15:00,471 INFO L146 ILogger]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 245 [2019-05-23 11:15:00,471 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:00,471 INFO L146 ILogger]: Abstraction has 261 states and 265 transitions. [2019-05-23 11:15:00,471 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:15:00,471 INFO L146 ILogger]: Start isEmpty. Operand 261 states and 265 transitions. [2019-05-23 11:15:00,473 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 256 [2019-05-23 11:15:00,473 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:00,473 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:00,473 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:00,474 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:00,474 INFO L146 ILogger]: Analyzing trace with hash -1189493717, now seen corresponding path program 15 times [2019-05-23 11:15:00,474 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:00,474 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:00,475 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:00,475 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:00,475 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:00,506 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:01,013 INFO L146 ILogger]: Checked inductivity of 1181 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:15:01,013 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:01,013 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:15:01,023 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:01,135 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:15:01,135 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:01,136 INFO L146 ILogger]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:15:01,140 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:01,299 INFO L146 ILogger]: Checked inductivity of 1181 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2019-05-23 11:15:01,318 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:01,319 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9] total 40 [2019-05-23 11:15:01,319 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:15:01,319 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:15:01,320 INFO L146 ILogger]: CoverageRelationStatistics Valid=311, Invalid=1249, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:15:01,320 INFO L146 ILogger]: Start difference. First operand 261 states and 265 transitions. Second operand 40 states. [2019-05-23 11:15:02,630 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:02,630 INFO L146 ILogger]: Finished difference Result 391 states and 400 transitions. [2019-05-23 11:15:02,630 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-05-23 11:15:02,631 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 255 [2019-05-23 11:15:02,631 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:02,633 INFO L146 ILogger]: With dead ends: 391 [2019-05-23 11:15:02,633 INFO L146 ILogger]: Without dead ends: 291 [2019-05-23 11:15:02,636 INFO L146 ILogger]: 0 DeclaredPredicates, 323 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1355, Invalid=4345, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:15:02,636 INFO L146 ILogger]: Start minimizeSevpa. Operand 291 states. [2019-05-23 11:15:02,640 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 291 to 278. [2019-05-23 11:15:02,641 INFO L146 ILogger]: Start removeUnreachable. Operand 278 states. [2019-05-23 11:15:02,641 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 278 states to 278 states and 282 transitions. [2019-05-23 11:15:02,641 INFO L146 ILogger]: Start accepts. Automaton has 278 states and 282 transitions. Word has length 255 [2019-05-23 11:15:02,642 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:02,642 INFO L146 ILogger]: Abstraction has 278 states and 282 transitions. [2019-05-23 11:15:02,642 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:15:02,642 INFO L146 ILogger]: Start isEmpty. Operand 278 states and 282 transitions. [2019-05-23 11:15:02,643 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 273 [2019-05-23 11:15:02,644 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:02,644 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:02,644 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:02,644 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:02,645 INFO L146 ILogger]: Analyzing trace with hash 110714574, now seen corresponding path program 16 times [2019-05-23 11:15:02,645 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:02,645 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:02,646 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:02,646 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:02,646 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:02,672 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:03,526 INFO L146 ILogger]: Checked inductivity of 1354 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:15:03,526 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:03,526 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 11:15:03,538 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:06,775 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:06,776 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:06,780 INFO L146 ILogger]: Trace formula consists of 415 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:15:06,784 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:07,495 INFO L146 ILogger]: Checked inductivity of 1354 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:15:07,551 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:07,552 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-05-23 11:15:07,553 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:15:07,553 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:15:07,554 INFO L146 ILogger]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:15:07,555 INFO L146 ILogger]: Start difference. First operand 278 states and 282 transitions. Second operand 37 states. [2019-05-23 11:15:08,949 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:08,950 INFO L146 ILogger]: Finished difference Result 403 states and 411 transitions. [2019-05-23 11:15:08,956 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:15:08,956 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 272 [2019-05-23 11:15:08,957 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:08,958 INFO L146 ILogger]: With dead ends: 403 [2019-05-23 11:15:08,958 INFO L146 ILogger]: Without dead ends: 296 [2019-05-23 11:15:08,960 INFO L146 ILogger]: 0 DeclaredPredicates, 338 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:15:08,961 INFO L146 ILogger]: Start minimizeSevpa. Operand 296 states. [2019-05-23 11:15:08,965 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 296 to 288. [2019-05-23 11:15:08,965 INFO L146 ILogger]: Start removeUnreachable. Operand 288 states. [2019-05-23 11:15:08,966 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 288 states to 288 states and 292 transitions. [2019-05-23 11:15:08,966 INFO L146 ILogger]: Start accepts. Automaton has 288 states and 292 transitions. Word has length 272 [2019-05-23 11:15:08,966 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:08,967 INFO L146 ILogger]: Abstraction has 288 states and 292 transitions. [2019-05-23 11:15:08,967 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:15:08,967 INFO L146 ILogger]: Start isEmpty. Operand 288 states and 292 transitions. [2019-05-23 11:15:08,968 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 283 [2019-05-23 11:15:08,968 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:08,968 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:08,969 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:08,969 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:08,969 INFO L146 ILogger]: Analyzing trace with hash -988839436, now seen corresponding path program 17 times [2019-05-23 11:15:08,969 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:08,970 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:08,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:08,970 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:08,971 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:08,994 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:09,965 INFO L146 ILogger]: Checked inductivity of 1515 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:15:09,965 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:09,965 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 11:15:09,976 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1