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-tiling/rewnifrev_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:32,535 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:32,537 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:32,554 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:32,554 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:32,556 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:32,558 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:32,560 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:32,563 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:32,564 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:32,565 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:32,565 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:32,566 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:32,567 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:32,569 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:32,570 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:32,570 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:32,572 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:32,575 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:32,577 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:32,578 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:32,579 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:32,582 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-05-23 11:26:32,589 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:32,589 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:32,590 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:32,590 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:32,591 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:32,591 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:32,592 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:32,606 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:32,606 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:32,607 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:32,608 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:32,608 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:32,608 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:32,608 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:32,608 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:32,609 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:32,609 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:32,609 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:32,609 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:32,609 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:32,610 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:32,610 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:32,610 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:32,610 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:32,610 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:32,611 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:32,611 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:32,611 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:32,611 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:32,611 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:32,612 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:32,612 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:32,612 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:32,612 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:32,612 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:32,613 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 11:26:32,659 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:32,675 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:32,680 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:32,681 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:32,682 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:32,682 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/rewnifrev_true-unreach-call.i [2019-05-23 11:26:32,751 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee7bf30c/cf7f171c12ae4defa24386b735693378/FLAG8d6b6ecbf [2019-05-23 11:26:33,206 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:33,207 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/rewnifrev_true-unreach-call.i [2019-05-23 11:26:33,214 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee7bf30c/cf7f171c12ae4defa24386b735693378/FLAG8d6b6ecbf [2019-05-23 11:26:33,577 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee7bf30c/cf7f171c12ae4defa24386b735693378 [2019-05-23 11:26:33,588 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:33,592 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:33,594 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:33,595 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:33,599 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:33,600 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,603 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2441f151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33, skipping insertion in model container [2019-05-23 11:26:33,603 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,612 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:33,632 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:33,823 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:33,827 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:33,846 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:33,864 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:33,865 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33 WrapperNode [2019-05-23 11:26:33,865 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:33,866 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:33,866 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:33,866 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:33,875 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,883 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,905 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:33,906 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:33,906 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:33,906 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:33,916 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,917 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,918 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,919 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,925 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,930 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,932 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,936 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:33,941 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:33,941 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:33,941 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:33,943 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (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 11:26:34,091 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:34,091 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:34,091 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:34,091 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:34,091 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:34,091 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:34,499 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:34,499 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:26:34,500 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:34 BoogieIcfgContainer [2019-05-23 11:26:34,501 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:34,502 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:34,502 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:34,505 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:34,505 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:33" (1/3) ... [2019-05-23 11:26:34,506 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5b1e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:34, skipping insertion in model container [2019-05-23 11:26:34,506 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (2/3) ... [2019-05-23 11:26:34,507 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5b1e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:34, skipping insertion in model container [2019-05-23 11:26:34,507 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:34" (3/3) ... [2019-05-23 11:26:34,509 INFO L146 ILogger]: Analyzing ICFG rewnifrev_true-unreach-call.i [2019-05-23 11:26:34,519 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:34,527 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:34,540 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:34,567 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:34,568 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:34,568 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:34,568 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:34,568 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:34,568 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:34,569 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:34,569 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:34,569 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:34,583 INFO L146 ILogger]: Start isEmpty. Operand 38 states. [2019-05-23 11:26:34,590 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:26:34,590 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:34,591 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] [2019-05-23 11:26:34,593 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:34,598 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:34,598 INFO L146 ILogger]: Analyzing trace with hash 492767048, now seen corresponding path program 1 times [2019-05-23 11:26:34,600 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:34,601 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:34,643 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,644 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:34,644 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,692 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:34,727 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 11:26:34,729 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:34,730 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:26:34,733 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:26:34,747 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:26:34,748 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:26:34,750 INFO L146 ILogger]: Start difference. First operand 38 states. Second operand 2 states. [2019-05-23 11:26:34,766 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:34,766 INFO L146 ILogger]: Finished difference Result 57 states and 65 transitions. [2019-05-23 11:26:34,767 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:26:34,768 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:26:34,768 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:34,778 INFO L146 ILogger]: With dead ends: 57 [2019-05-23 11:26:34,778 INFO L146 ILogger]: Without dead ends: 32 [2019-05-23 11:26:34,782 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 11:26:34,795 INFO L146 ILogger]: Start minimizeSevpa. Operand 32 states. [2019-05-23 11:26:34,807 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-05-23 11:26:34,809 INFO L146 ILogger]: Start removeUnreachable. Operand 32 states. [2019-05-23 11:26:34,810 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2019-05-23 11:26:34,811 INFO L146 ILogger]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 21 [2019-05-23 11:26:34,812 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:34,812 INFO L146 ILogger]: Abstraction has 32 states and 34 transitions. [2019-05-23 11:26:34,812 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:26:34,812 INFO L146 ILogger]: Start isEmpty. Operand 32 states and 34 transitions. [2019-05-23 11:26:34,813 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:26:34,813 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:34,813 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] [2019-05-23 11:26:34,814 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:34,814 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:34,814 INFO L146 ILogger]: Analyzing trace with hash -652732616, now seen corresponding path program 1 times [2019-05-23 11:26:34,814 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:34,815 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:34,816 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,816 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:34,816 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,828 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:34,991 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 11:26:34,991 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:34,991 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:34,998 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:34,999 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:34,999 INFO L146 ILogger]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:35,000 INFO L146 ILogger]: Start difference. First operand 32 states and 34 transitions. Second operand 4 states. [2019-05-23 11:26:35,270 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:35,270 INFO L146 ILogger]: Finished difference Result 57 states and 63 transitions. [2019-05-23 11:26:35,271 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:35,271 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 21 [2019-05-23 11:26:35,271 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:35,272 INFO L146 ILogger]: With dead ends: 57 [2019-05-23 11:26:35,272 INFO L146 ILogger]: Without dead ends: 37 [2019-05-23 11:26:35,274 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:35,274 INFO L146 ILogger]: Start minimizeSevpa. Operand 37 states. [2019-05-23 11:26:35,278 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 37 to 34. [2019-05-23 11:26:35,279 INFO L146 ILogger]: Start removeUnreachable. Operand 34 states. [2019-05-23 11:26:35,279 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-05-23 11:26:35,280 INFO L146 ILogger]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 21 [2019-05-23 11:26:35,280 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:35,280 INFO L146 ILogger]: Abstraction has 34 states and 36 transitions. [2019-05-23 11:26:35,280 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:35,280 INFO L146 ILogger]: Start isEmpty. Operand 34 states and 36 transitions. [2019-05-23 11:26:35,281 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:26:35,281 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:35,281 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 11:26:35,282 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:35,282 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:35,282 INFO L146 ILogger]: Analyzing trace with hash -1430978834, now seen corresponding path program 1 times [2019-05-23 11:26:35,282 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:35,282 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:35,283 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,284 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:35,284 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,308 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:35,449 INFO L146 ILogger]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:35,449 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:35,449 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:26:35,450 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:26:35,450 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:26:35,452 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:35,452 INFO L146 ILogger]: Start difference. First operand 34 states and 36 transitions. Second operand 5 states. [2019-05-23 11:26:35,811 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:35,811 INFO L146 ILogger]: Finished difference Result 63 states and 66 transitions. [2019-05-23 11:26:35,811 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:26:35,812 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 28 [2019-05-23 11:26:35,812 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:35,813 INFO L146 ILogger]: With dead ends: 63 [2019-05-23 11:26:35,813 INFO L146 ILogger]: Without dead ends: 50 [2019-05-23 11:26:35,814 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:26:35,815 INFO L146 ILogger]: Start minimizeSevpa. Operand 50 states. [2019-05-23 11:26:35,819 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 50 to 39. [2019-05-23 11:26:35,819 INFO L146 ILogger]: Start removeUnreachable. Operand 39 states. [2019-05-23 11:26:35,820 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2019-05-23 11:26:35,820 INFO L146 ILogger]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 28 [2019-05-23 11:26:35,821 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:35,821 INFO L146 ILogger]: Abstraction has 39 states and 41 transitions. [2019-05-23 11:26:35,821 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:26:35,821 INFO L146 ILogger]: Start isEmpty. Operand 39 states and 41 transitions. [2019-05-23 11:26:35,822 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:26:35,822 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:35,823 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:35,823 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:35,823 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:35,823 INFO L146 ILogger]: Analyzing trace with hash -320220315, now seen corresponding path program 1 times [2019-05-23 11:26:35,824 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:35,824 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:35,825 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,825 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:35,825 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,903 INFO L146 ILogger]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:36,904 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:36,904 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 11:26:36,923 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:36,944 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,946 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:26:36,952 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:37,017 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-05-23 11:26:37,018 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,026 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:37,027 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,027 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-05-23 11:26:37,095 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:26:37,095 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,105 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:37,106 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,106 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:26:37,158 INFO L146 ILogger]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:26:37,186 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:26:37,186 INFO L146 ILogger]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 15 [2019-05-23 11:26:37,186 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:26:37,187 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:26:37,188 INFO L146 ILogger]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:26:37,188 INFO L146 ILogger]: Start difference. First operand 39 states and 41 transitions. Second operand 15 states. [2019-05-23 11:26:37,844 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:37,844 INFO L146 ILogger]: Finished difference Result 58 states and 61 transitions. [2019-05-23 11:26:37,845 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:26:37,845 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 34 [2019-05-23 11:26:37,846 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:37,847 INFO L146 ILogger]: With dead ends: 58 [2019-05-23 11:26:37,847 INFO L146 ILogger]: Without dead ends: 56 [2019-05-23 11:26:37,850 INFO L146 ILogger]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:26:37,850 INFO L146 ILogger]: Start minimizeSevpa. Operand 56 states. [2019-05-23 11:26:37,855 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 56 to 45. [2019-05-23 11:26:37,855 INFO L146 ILogger]: Start removeUnreachable. Operand 45 states. [2019-05-23 11:26:37,856 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2019-05-23 11:26:37,856 INFO L146 ILogger]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 34 [2019-05-23 11:26:37,856 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:37,857 INFO L146 ILogger]: Abstraction has 45 states and 47 transitions. [2019-05-23 11:26:37,857 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:26:37,857 INFO L146 ILogger]: Start isEmpty. Operand 45 states and 47 transitions. [2019-05-23 11:26:37,858 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 45 [2019-05-23 11:26:37,858 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:37,858 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] [2019-05-23 11:26:37,860 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:37,860 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:37,860 INFO L146 ILogger]: Analyzing trace with hash 1566710744, now seen corresponding path program 1 times [2019-05-23 11:26:37,860 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:37,860 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:37,861 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:37,862 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:37,862 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:37,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:38,182 INFO L146 ILogger]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:38,182 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:38,182 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 11:26:38,193 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:38,222 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:38,223 INFO L146 ILogger]: Trace formula consists of 74 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:26:38,226 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:38,349 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2019-05-23 11:26:38,349 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,360 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2019-05-23 11:26:38,360 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,378 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:38,379 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-05-23 11:26:38,379 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:39, output treesize:31 [2019-05-23 11:26:38,738 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:38,739 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-05-23 11:26:38,740 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,761 INFO L146 ILogger]: treesize reduction 30, result has 47.4 percent of original size [2019-05-23 11:26:38,762 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:38,763 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2019-05-23 11:26:39,642 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:39,643 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 54 [2019-05-23 11:26:39,647 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,670 INFO L146 ILogger]: treesize reduction 57, result has 18.6 percent of original size [2019-05-23 11:26:39,671 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,672 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:41, output treesize:7 [2019-05-23 11:26:39,772 INFO L146 ILogger]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:39,799 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:39,800 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 27 [2019-05-23 11:26:39,800 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:26:39,801 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:26:39,802 INFO L146 ILogger]: CoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:26:39,802 INFO L146 ILogger]: Start difference. First operand 45 states and 47 transitions. Second operand 27 states. [2019-05-23 11:26:40,515 WARN L146 ILogger]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-05-23 11:26:41,123 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2019-05-23 11:26:41,596 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:41,596 INFO L146 ILogger]: Finished difference Result 70 states and 73 transitions. [2019-05-23 11:26:41,596 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:26:41,597 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 44 [2019-05-23 11:26:41,597 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:41,598 INFO L146 ILogger]: With dead ends: 70 [2019-05-23 11:26:41,599 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:26:41,600 INFO L146 ILogger]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=416, Invalid=1476, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:26:41,601 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:26:41,605 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 55. [2019-05-23 11:26:41,606 INFO L146 ILogger]: Start removeUnreachable. Operand 55 states. [2019-05-23 11:26:41,607 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2019-05-23 11:26:41,607 INFO L146 ILogger]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 44 [2019-05-23 11:26:41,607 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:41,608 INFO L146 ILogger]: Abstraction has 55 states and 57 transitions. [2019-05-23 11:26:41,608 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:26:41,608 INFO L146 ILogger]: Start isEmpty. Operand 55 states and 57 transitions. [2019-05-23 11:26:41,609 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:26:41,609 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:41,609 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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] [2019-05-23 11:26:41,609 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:41,610 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:41,610 INFO L146 ILogger]: Analyzing trace with hash -857952117, now seen corresponding path program 2 times [2019-05-23 11:26:41,610 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:41,610 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:41,611 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:41,611 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:41,611 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:41,625 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:41,734 INFO L146 ILogger]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:41,735 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:41,735 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 11:26:41,750 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:41,776 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:41,776 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:41,778 INFO L146 ILogger]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:26:41,780 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:41,892 INFO L146 ILogger]: Checked inductivity of 30 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:41,910 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:41,911 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2019-05-23 11:26:41,911 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:26:41,911 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:26:41,912 INFO L146 ILogger]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:26:41,912 INFO L146 ILogger]: Start difference. First operand 55 states and 57 transitions. Second operand 15 states. [2019-05-23 11:26:42,322 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:42,322 INFO L146 ILogger]: Finished difference Result 115 states and 120 transitions. [2019-05-23 11:26:42,323 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:26:42,323 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 54 [2019-05-23 11:26:42,324 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:42,325 INFO L146 ILogger]: With dead ends: 115 [2019-05-23 11:26:42,325 INFO L146 ILogger]: Without dead ends: 66 [2019-05-23 11:26:42,326 INFO L146 ILogger]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:26:42,326 INFO L146 ILogger]: Start minimizeSevpa. Operand 66 states. [2019-05-23 11:26:42,331 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 66 to 62. [2019-05-23 11:26:42,331 INFO L146 ILogger]: Start removeUnreachable. Operand 62 states. [2019-05-23 11:26:42,332 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2019-05-23 11:26:42,332 INFO L146 ILogger]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 54 [2019-05-23 11:26:42,332 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:42,332 INFO L146 ILogger]: Abstraction has 62 states and 64 transitions. [2019-05-23 11:26:42,333 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:26:42,333 INFO L146 ILogger]: Start isEmpty. Operand 62 states and 64 transitions. [2019-05-23 11:26:42,334 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 62 [2019-05-23 11:26:42,334 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:42,334 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] [2019-05-23 11:26:42,334 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:42,335 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:42,335 INFO L146 ILogger]: Analyzing trace with hash -1118955627, now seen corresponding path program 3 times [2019-05-23 11:26:42,335 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:42,335 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:42,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:42,336 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:42,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:42,363 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:42,881 WARN L146 ILogger]: Spent 165.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-05-23 11:26:43,169 INFO L146 ILogger]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:43,169 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:43,169 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 11:26:43,178 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:43,225 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:26:43,225 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:43,226 INFO L146 ILogger]: Trace formula consists of 98 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:26:43,230 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:43,376 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:26:43,376 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:43,380 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:43,381 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:43,381 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2019-05-23 11:26:43,572 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:43,573 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 69 [2019-05-23 11:26:43,573 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:43,625 INFO L146 ILogger]: treesize reduction 27, result has 65.8 percent of original size [2019-05-23 11:26:43,626 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:43,627 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:52 [2019-05-23 11:26:43,672 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:43,703 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:43,704 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 109 [2019-05-23 11:26:43,705 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:43,739 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:43,755 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2019-05-23 11:26:43,755 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:43,834 INFO L146 ILogger]: treesize reduction 62, result has 57.2 percent of original size [2019-05-23 11:26:43,835 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-05-23 11:26:43,836 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:91, output treesize:83 [2019-05-23 11:26:44,366 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:44,426 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:44,427 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 201 [2019-05-23 11:26:44,428 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:44,516 INFO L146 ILogger]: treesize reduction 120, result has 44.2 percent of original size [2019-05-23 11:26:44,519 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:44,519 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:73, output treesize:95 [2019-05-23 11:26:46,417 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2019-05-23 11:26:47,585 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:47,586 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:47,587 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:47,588 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:47,589 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:47,590 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:47,591 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:47,591 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 18 [2019-05-23 11:26:47,592 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:47,610 INFO L146 ILogger]: treesize reduction 8, result has 69.2 percent of original size [2019-05-23 11:26:47,611 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:47,611 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:63, output treesize:10 [2019-05-23 11:26:47,780 INFO L146 ILogger]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:47,800 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:47,800 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 42 [2019-05-23 11:26:47,801 INFO L146 ILogger]: Interpolant automaton has 42 states [2019-05-23 11:26:47,801 INFO L146 ILogger]: Constructing interpolant automaton starting with 42 interpolants. [2019-05-23 11:26:47,803 INFO L146 ILogger]: CoverageRelationStatistics Valid=225, Invalid=1497, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:26:47,803 INFO L146 ILogger]: Start difference. First operand 62 states and 64 transitions. Second operand 42 states. [2019-05-23 11:26:51,047 WARN L146 ILogger]: Spent 132.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-05-23 11:26:51,408 WARN L146 ILogger]: Spent 147.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 77 [2019-05-23 11:26:51,607 WARN L146 ILogger]: Spent 120.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 75 [2019-05-23 11:26:51,837 WARN L146 ILogger]: Spent 124.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 79 [2019-05-23 11:26:52,096 WARN L146 ILogger]: Spent 138.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 81 [2019-05-23 11:26:52,321 WARN L146 ILogger]: Spent 115.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2019-05-23 11:26:52,820 WARN L146 ILogger]: Spent 268.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 81 [2019-05-23 11:26:53,745 WARN L146 ILogger]: Spent 646.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 77 [2019-05-23 11:26:54,025 WARN L146 ILogger]: Spent 193.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 75 [2019-05-23 11:26:54,409 WARN L146 ILogger]: Spent 173.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 63 [2019-05-23 11:26:54,769 WARN L146 ILogger]: Spent 190.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 65 [2019-05-23 11:26:55,006 WARN L146 ILogger]: Spent 116.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 44 [2019-05-23 11:26:55,553 WARN L146 ILogger]: Spent 321.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 65 [2019-05-23 11:26:55,571 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:55,571 INFO L146 ILogger]: Finished difference Result 111 states and 116 transitions. [2019-05-23 11:26:55,571 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-05-23 11:26:55,572 INFO L146 ILogger]: Start accepts. Automaton has 42 states. Word has length 61 [2019-05-23 11:26:55,572 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:55,573 INFO L146 ILogger]: With dead ends: 111 [2019-05-23 11:26:55,573 INFO L146 ILogger]: Without dead ends: 79 [2019-05-23 11:26:55,576 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 27 SyntacticMatches, 16 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=942, Invalid=4758, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:26:55,576 INFO L146 ILogger]: Start minimizeSevpa. Operand 79 states. [2019-05-23 11:26:55,582 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 79 to 75. [2019-05-23 11:26:55,582 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:26:55,583 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2019-05-23 11:26:55,584 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 61 [2019-05-23 11:26:55,584 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:55,584 INFO L146 ILogger]: Abstraction has 75 states and 79 transitions. [2019-05-23 11:26:55,584 INFO L146 ILogger]: Interpolant automaton has 42 states. [2019-05-23 11:26:55,584 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 79 transitions. [2019-05-23 11:26:55,585 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:26:55,585 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:55,586 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:55,586 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:55,586 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:55,586 INFO L146 ILogger]: Analyzing trace with hash 1133941067, now seen corresponding path program 4 times [2019-05-23 11:26:55,587 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:55,587 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:55,588 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:55,588 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:55,588 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:55,613 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:56,405 INFO L146 ILogger]: Checked inductivity of 65 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-05-23 11:26:56,406 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:56,406 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 11:26:56,414 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:56,434 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:56,434 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:56,435 INFO L146 ILogger]: Trace formula consists of 105 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:26:56,438 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:56,457 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:26:56,457 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,461 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:56,462 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,462 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:26:56,552 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:56,553 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2019-05-23 11:26:56,554 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,563 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:56,563 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,564 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2019-05-23 11:26:56,604 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:56,605 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:56,607 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:56,609 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:56,609 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2019-05-23 11:26:56,610 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,619 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:56,620 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,620 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2019-05-23 11:26:56,844 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:56,845 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:56,846 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:56,849 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:56,850 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:56,850 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2019-05-23 11:26:56,851 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,911 INFO L146 ILogger]: treesize reduction 11, result has 82.5 percent of original size [2019-05-23 11:26:56,912 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:56,912 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:69, output treesize:58 [2019-05-23 11:26:57,631 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-05-23 11:26:58,568 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:58,569 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:58,582 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:58,599 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:58,600 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 60 [2019-05-23 11:26:58,607 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:26:58,704 INFO L146 ILogger]: treesize reduction 97, result has 14.2 percent of original size [2019-05-23 11:26:58,705 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:58,705 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:62, output treesize:7 [2019-05-23 11:26:58,799 INFO L146 ILogger]: Checked inductivity of 65 backedges. 26 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-05-23 11:26:58,818 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:58,818 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 38 [2019-05-23 11:26:58,818 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:26:58,819 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:26:58,819 INFO L146 ILogger]: CoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:26:58,820 INFO L146 ILogger]: Start difference. First operand 75 states and 79 transitions. Second operand 38 states. [2019-05-23 11:27:01,017 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:01,018 INFO L146 ILogger]: Finished difference Result 100 states and 105 transitions. [2019-05-23 11:27:01,018 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:27:01,018 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 68 [2019-05-23 11:27:01,019 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:01,020 INFO L146 ILogger]: With dead ends: 100 [2019-05-23 11:27:01,020 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:27:01,023 INFO L146 ILogger]: 0 DeclaredPredicates, 121 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=763, Invalid=3659, Unknown=0, NotChecked=0, Total=4422 [2019-05-23 11:27:01,023 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:27:01,030 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 85. [2019-05-23 11:27:01,030 INFO L146 ILogger]: Start removeUnreachable. Operand 85 states. [2019-05-23 11:27:01,031 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2019-05-23 11:27:01,032 INFO L146 ILogger]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 68 [2019-05-23 11:27:01,032 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:01,032 INFO L146 ILogger]: Abstraction has 85 states and 89 transitions. [2019-05-23 11:27:01,032 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:27:01,032 INFO L146 ILogger]: Start isEmpty. Operand 85 states and 89 transitions. [2019-05-23 11:27:01,033 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:27:01,034 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:01,034 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:01,034 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:01,034 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:01,034 INFO L146 ILogger]: Analyzing trace with hash -360762818, now seen corresponding path program 5 times [2019-05-23 11:27:01,035 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:01,035 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:01,035 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:01,036 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:01,036 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:01,061 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:01,993 WARN L146 ILogger]: Spent 349.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 22 [2019-05-23 11:27:02,682 WARN L146 ILogger]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2019-05-23 11:27:03,646 INFO L146 ILogger]: Checked inductivity of 91 backedges. 12 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:03,646 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:03,646 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 11:27:03,657 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:27:03,698 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:27:03,698 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:03,700 INFO L146 ILogger]: Trace formula consists of 122 conjuncts, 43 conjunts are in the unsatisfiable core [2019-05-23 11:27:03,703 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:03,737 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:27:03,737 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,767 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:03,768 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,768 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:27:03,856 INFO L146 ILogger]: treesize reduction 44, result has 21.4 percent of original size [2019-05-23 11:27:03,857 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2019-05-23 11:27:03,858 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,864 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:03,864 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,865 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2019-05-23 11:27:04,295 INFO L146 ILogger]: treesize reduction 96, result has 20.7 percent of original size [2019-05-23 11:27:04,296 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2019-05-23 11:27:04,296 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,307 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:04,307 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,307 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43 [2019-05-23 11:27:04,469 INFO L146 ILogger]: treesize reduction 178, result has 16.8 percent of original size [2019-05-23 11:27:04,470 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 65 [2019-05-23 11:27:04,471 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,481 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:04,481 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,482 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2019-05-23 11:27:04,576 INFO L146 ILogger]: treesize reduction 222, result has 14.3 percent of original size [2019-05-23 11:27:04,577 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 71 treesize of output 68 [2019-05-23 11:27:04,578 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,590 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:04,591 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,591 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:57 [2019-05-23 11:27:04,858 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:04,861 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:04,863 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:04,865 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:04,899 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:04,900 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:04,900 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:04,901 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 68 [2019-05-23 11:27:04,901 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,947 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:04,948 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:27:04,948 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:80, output treesize:63 [2019-05-23 11:27:05,645 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,646 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,647 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,647 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,648 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,649 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,650 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:05,651 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,653 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,654 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 25 [2019-05-23 11:27:05,654 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,664 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,664 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,665 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:67, output treesize:7 [2019-05-23 11:27:05,781 INFO L146 ILogger]: Checked inductivity of 91 backedges. 29 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:05,800 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:05,800 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27] total 53 [2019-05-23 11:27:05,800 INFO L146 ILogger]: Interpolant automaton has 53 states [2019-05-23 11:27:05,801 INFO L146 ILogger]: Constructing interpolant automaton starting with 53 interpolants. [2019-05-23 11:27:05,801 INFO L146 ILogger]: CoverageRelationStatistics Valid=272, Invalid=2484, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:27:05,802 INFO L146 ILogger]: Start difference. First operand 85 states and 89 transitions. Second operand 53 states. [2019-05-23 11:27:07,759 WARN L146 ILogger]: Spent 176.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2019-05-23 11:27:08,330 WARN L146 ILogger]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-05-23 11:27:09,491 WARN L146 ILogger]: Spent 184.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2019-05-23 11:27:10,244 WARN L146 ILogger]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-05-23 11:27:10,670 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-05-23 11:27:10,875 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-05-23 11:27:13,017 WARN L146 ILogger]: Spent 381.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2019-05-23 11:27:17,614 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2019-05-23 11:27:20,715 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:20,716 INFO L146 ILogger]: Finished difference Result 301 states and 319 transitions. [2019-05-23 11:27:20,716 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2019-05-23 11:27:20,716 INFO L146 ILogger]: Start accepts. Automaton has 53 states. Word has length 78 [2019-05-23 11:27:20,716 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:20,717 INFO L146 ILogger]: With dead ends: 301 [2019-05-23 11:27:20,718 INFO L146 ILogger]: Without dead ends: 204 [2019-05-23 11:27:20,728 INFO L146 ILogger]: 0 DeclaredPredicates, 257 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14586 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=3755, Invalid=35251, Unknown=0, NotChecked=0, Total=39006 [2019-05-23 11:27:20,729 INFO L146 ILogger]: Start minimizeSevpa. Operand 204 states. [2019-05-23 11:27:20,738 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 204 to 111. [2019-05-23 11:27:20,739 INFO L146 ILogger]: Start removeUnreachable. Operand 111 states. [2019-05-23 11:27:20,740 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2019-05-23 11:27:20,740 INFO L146 ILogger]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 78 [2019-05-23 11:27:20,740 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:20,741 INFO L146 ILogger]: Abstraction has 111 states and 119 transitions. [2019-05-23 11:27:20,741 INFO L146 ILogger]: Interpolant automaton has 53 states. [2019-05-23 11:27:20,741 INFO L146 ILogger]: Start isEmpty. Operand 111 states and 119 transitions. [2019-05-23 11:27:20,742 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 96 [2019-05-23 11:27:20,742 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:20,743 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:20,743 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:20,743 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:20,743 INFO L146 ILogger]: Analyzing trace with hash 570729467, now seen corresponding path program 6 times [2019-05-23 11:27:20,743 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:20,743 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:20,744 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:20,744 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:20,744 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:20,766 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:22,157 INFO L146 ILogger]: Checked inductivity of 155 backedges. 30 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:22,158 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:22,158 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 11:27:22,166 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:27:22,202 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-05-23 11:27:22,203 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:22,204 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 58 conjunts are in the unsatisfiable core [2019-05-23 11:27:22,208 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:22,217 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:27:22,217 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,226 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:22,226 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,227 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:27:22,319 INFO L146 ILogger]: treesize reduction 44, result has 21.4 percent of original size [2019-05-23 11:27:22,320 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2019-05-23 11:27:22,320 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,330 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:22,331 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,331 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2019-05-23 11:27:22,389 INFO L146 ILogger]: treesize reduction 96, result has 20.7 percent of original size [2019-05-23 11:27:22,390 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2019-05-23 11:27:22,391 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,399 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:22,400 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,400 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43 [2019-05-23 11:27:22,550 INFO L146 ILogger]: treesize reduction 178, result has 16.8 percent of original size [2019-05-23 11:27:22,551 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 65 [2019-05-23 11:27:22,552 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,564 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:22,564 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,564 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2019-05-23 11:27:22,652 INFO L146 ILogger]: treesize reduction 222, result has 14.3 percent of original size [2019-05-23 11:27:22,652 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 71 treesize of output 68 [2019-05-23 11:27:22,653 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,664 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:22,664 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,665 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:57 [2019-05-23 11:27:22,855 INFO L146 ILogger]: treesize reduction 274, result has 14.9 percent of original size [2019-05-23 11:27:22,856 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 82 [2019-05-23 11:27:22,857 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,868 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:22,868 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,868 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:73 [2019-05-23 11:27:22,982 INFO L146 ILogger]: treesize reduction 332, result has 12.9 percent of original size [2019-05-23 11:27:22,982 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 85 treesize of output 85 [2019-05-23 11:27:22,983 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,997 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:22,997 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,998 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:88, output treesize:71 [2019-05-23 11:27:23,308 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,309 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,309 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,310 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,312 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,313 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,318 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,319 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,320 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,321 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,321 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,322 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 85 [2019-05-23 11:27:23,323 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,340 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,341 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:27:23,341 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:94, output treesize:77 [2019-05-23 11:27:24,525 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,526 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,526 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,528 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,529 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,530 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,531 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,532 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,533 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,534 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,536 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,537 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,538 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,539 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,540 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:24,542 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:24,543 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 30 [2019-05-23 11:27:24,543 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:24,549 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:24,550 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:24,550 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:80, output treesize:7 [2019-05-23 11:27:24,779 INFO L146 ILogger]: Checked inductivity of 155 backedges. 52 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:24,797 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:24,798 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 35] total 59 [2019-05-23 11:27:24,798 INFO L146 ILogger]: Interpolant automaton has 59 states [2019-05-23 11:27:24,799 INFO L146 ILogger]: Constructing interpolant automaton starting with 59 interpolants. [2019-05-23 11:27:24,800 INFO L146 ILogger]: CoverageRelationStatistics Valid=305, Invalid=3117, Unknown=0, NotChecked=0, Total=3422 [2019-05-23 11:27:24,800 INFO L146 ILogger]: Start difference. First operand 111 states and 119 transitions. Second operand 59 states. [2019-05-23 11:27:38,576 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:38,576 INFO L146 ILogger]: Finished difference Result 390 states and 413 transitions. [2019-05-23 11:27:38,576 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2019-05-23 11:27:38,576 INFO L146 ILogger]: Start accepts. Automaton has 59 states. Word has length 95 [2019-05-23 11:27:38,577 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:38,578 INFO L146 ILogger]: With dead ends: 390 [2019-05-23 11:27:38,578 INFO L146 ILogger]: Without dead ends: 310 [2019-05-23 11:27:38,585 INFO L146 ILogger]: 0 DeclaredPredicates, 287 GetRequests, 63 SyntacticMatches, 10 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17572 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=3833, Invalid=42607, Unknown=0, NotChecked=0, Total=46440 [2019-05-23 11:27:38,586 INFO L146 ILogger]: Start minimizeSevpa. Operand 310 states. [2019-05-23 11:27:38,600 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 310 to 211. [2019-05-23 11:27:38,601 INFO L146 ILogger]: Start removeUnreachable. Operand 211 states. [2019-05-23 11:27:38,602 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 211 states to 211 states and 229 transitions. [2019-05-23 11:27:38,602 INFO L146 ILogger]: Start accepts. Automaton has 211 states and 229 transitions. Word has length 95 [2019-05-23 11:27:38,602 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:38,603 INFO L146 ILogger]: Abstraction has 211 states and 229 transitions. [2019-05-23 11:27:38,603 INFO L146 ILogger]: Interpolant automaton has 59 states. [2019-05-23 11:27:38,603 INFO L146 ILogger]: Start isEmpty. Operand 211 states and 229 transitions. [2019-05-23 11:27:38,605 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:27:38,605 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:38,605 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:38,606 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:38,606 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:38,606 INFO L146 ILogger]: Analyzing trace with hash -1755780697, now seen corresponding path program 7 times [2019-05-23 11:27:38,606 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:38,606 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:38,607 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:38,607 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:38,607 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:38,616 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:38,838 INFO L146 ILogger]: Checked inductivity of 191 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-05-23 11:27:38,839 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:27:38,839 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:27:38,840 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:27:38,840 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:27:38,840 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:27:38,840 INFO L146 ILogger]: Start difference. First operand 211 states and 229 transitions. Second operand 5 states. [2019-05-23 11:27:39,477 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:39,477 INFO L146 ILogger]: Finished difference Result 292 states and 312 transitions. [2019-05-23 11:27:39,477 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:27:39,478 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 98 [2019-05-23 11:27:39,478 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:39,478 INFO L146 ILogger]: With dead ends: 292 [2019-05-23 11:27:39,478 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:27:39,479 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:27:39,479 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:27:39,490 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-05-23 11:27:39,490 INFO L146 ILogger]: Start removeUnreachable. Operand 113 states. [2019-05-23 11:27:39,491 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2019-05-23 11:27:39,491 INFO L146 ILogger]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 98 [2019-05-23 11:27:39,491 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:39,491 INFO L146 ILogger]: Abstraction has 113 states and 114 transitions. [2019-05-23 11:27:39,491 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:27:39,491 INFO L146 ILogger]: Start isEmpty. Operand 113 states and 114 transitions. [2019-05-23 11:27:39,493 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:27:39,493 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:39,493 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:39,493 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:39,494 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:39,494 INFO L146 ILogger]: Analyzing trace with hash -1380259420, now seen corresponding path program 8 times [2019-05-23 11:27:39,494 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:39,494 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:39,495 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:39,495 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:39,495 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:39,540 INFO L146 ILogger]: Conjunction of SSA is unsat