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/pnr4_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:25:33,794 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:25:33,796 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:25:33,808 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:25:33,809 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:25:33,810 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:25:33,811 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:25:33,813 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:25:33,815 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:25:33,816 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:25:33,817 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:25:33,817 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:25:33,818 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:25:33,819 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:25:33,821 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:25:33,822 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:25:33,823 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:25:33,824 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:25:33,826 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:25:33,831 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:25:33,834 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:25:33,835 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:25:33,840 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:25:33,840 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:25:33,840 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:25:33,845 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:25:33,845 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:25:33,847 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:25:33,848 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:25:33,849 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:25:33,849 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:25:33,850 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:25:33,853 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:25:33,854 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:25:33,854 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:25:33,855 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:25:33,855 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:25:33,857 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:25:33,858 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:25:33,858 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:25:33,885 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:25:33,885 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:25:33,887 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:25:33,888 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:25:33,888 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:25:33,888 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:25:33,889 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:25:33,889 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:25:33,889 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:25:33,889 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:25:33,890 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:25:33,890 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:25:33,891 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:25:33,891 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:25:33,891 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:25:33,891 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:25:33,891 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:25:33,892 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:25:33,893 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:25:33,893 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:25:33,893 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:25:33,893 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:25:33,894 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:25:33,894 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:25:33,894 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:25:33,894 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:25:33,895 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:25:33,895 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:25:33,895 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 11:25:33,955 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:25:33,969 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:25:33,973 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:25:33,975 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:25:33,975 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:25:33,976 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/pnr4_true-unreach-call.i [2019-05-23 11:25:34,039 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0897a771/ebb70434950c48d0850d57cf2ac22576/FLAG4abc6df4d [2019-05-23 11:25:34,451 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:25:34,452 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/pnr4_true-unreach-call.i [2019-05-23 11:25:34,459 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0897a771/ebb70434950c48d0850d57cf2ac22576/FLAG4abc6df4d [2019-05-23 11:25:34,813 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0897a771/ebb70434950c48d0850d57cf2ac22576 [2019-05-23 11:25:34,823 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:25:34,825 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:25:34,826 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:34,826 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:25:34,831 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:25:34,832 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:34" (1/1) ... [2019-05-23 11:25:34,835 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b58161f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:34, skipping insertion in model container [2019-05-23 11:25:34,836 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:34" (1/1) ... [2019-05-23 11:25:34,843 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:25:34,873 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:25:35,134 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:35,139 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:25:35,180 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:35,202 INFO L146 ILogger]: Completed translation [2019-05-23 11:25:35,202 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35 WrapperNode [2019-05-23 11:25:35,203 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:35,203 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:35,203 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:25:35,204 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:25:35,211 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (1/1) ... [2019-05-23 11:25:35,221 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (1/1) ... [2019-05-23 11:25:35,248 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:35,251 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:25:35,251 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:25:35,251 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:25:35,263 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (1/1) ... [2019-05-23 11:25:35,263 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (1/1) ... [2019-05-23 11:25:35,269 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (1/1) ... [2019-05-23 11:25:35,269 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (1/1) ... [2019-05-23 11:25:35,366 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (1/1) ... [2019-05-23 11:25:35,379 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (1/1) ... [2019-05-23 11:25:35,380 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (1/1) ... [2019-05-23 11:25:35,388 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:25:35,388 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:25:35,388 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:25:35,388 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:25:35,389 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (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 11:25:35,450 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:25:35,450 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:25:35,450 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:25:35,450 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:25:35,450 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:25:35,450 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:25:35,999 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:25:36,000 INFO L146 ILogger]: Removed 16 assume(true) statements. [2019-05-23 11:25:36,001 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:36 BoogieIcfgContainer [2019-05-23 11:25:36,001 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:25:36,002 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:25:36,002 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:25:36,005 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:25:36,006 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:25:34" (1/3) ... [2019-05-23 11:25:36,007 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636826a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:36, skipping insertion in model container [2019-05-23 11:25:36,007 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:35" (2/3) ... [2019-05-23 11:25:36,007 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636826a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:36, skipping insertion in model container [2019-05-23 11:25:36,007 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:36" (3/3) ... [2019-05-23 11:25:36,009 INFO L146 ILogger]: Analyzing ICFG pnr4_true-unreach-call.i [2019-05-23 11:25:36,018 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:25:36,026 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:25:36,042 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:25:36,074 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:25:36,075 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:25:36,075 INFO L146 ILogger]: Hoare is true [2019-05-23 11:25:36,075 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:25:36,075 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:25:36,075 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:25:36,076 INFO L146 ILogger]: Difference is false [2019-05-23 11:25:36,076 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:25:36,076 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:25:36,092 INFO L146 ILogger]: Start isEmpty. Operand 95 states. [2019-05-23 11:25:36,099 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:25:36,100 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:36,101 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] [2019-05-23 11:25:36,103 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:36,107 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:36,108 INFO L146 ILogger]: Analyzing trace with hash 295750684, now seen corresponding path program 1 times [2019-05-23 11:25:36,110 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:36,110 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:36,162 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:36,162 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:36,163 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:36,230 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:36,553 WARN L146 ILogger]: Spent 189.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 9 [2019-05-23 11:25:36,830 WARN L146 ILogger]: Spent 219.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 8 [2019-05-23 11:25:36,926 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 11:25:36,928 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:36,929 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:25:36,933 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:36,946 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:36,947 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:36,949 INFO L146 ILogger]: Start difference. First operand 95 states. Second operand 5 states. [2019-05-23 11:25:37,292 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:37,293 INFO L146 ILogger]: Finished difference Result 176 states and 192 transitions. [2019-05-23 11:25:37,293 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:25:37,294 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 26 [2019-05-23 11:25:37,295 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:37,306 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:25:37,306 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:25:37,309 INFO L146 ILogger]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:37,325 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:25:37,347 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 87. [2019-05-23 11:25:37,349 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:25:37,350 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2019-05-23 11:25:37,352 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 26 [2019-05-23 11:25:37,352 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:37,353 INFO L146 ILogger]: Abstraction has 87 states and 92 transitions. [2019-05-23 11:25:37,353 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:37,353 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 92 transitions. [2019-05-23 11:25:37,356 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:25:37,356 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:37,356 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:37,356 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:37,357 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:37,357 INFO L146 ILogger]: Analyzing trace with hash -165571674, now seen corresponding path program 1 times [2019-05-23 11:25:37,357 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:37,357 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:37,358 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:37,358 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:37,359 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:37,428 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:38,228 WARN L146 ILogger]: Spent 255.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2019-05-23 11:25:38,368 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:38,368 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:38,368 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 11:25:38,386 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:38,436 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:38,438 INFO L146 ILogger]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:25:38,447 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:38,577 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:38,580 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:38,676 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:38,677 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 11:25:38,678 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:25:38,698 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:38,699 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 30 treesize of output 29 [2019-05-23 11:25:38,700 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:38,744 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:38,745 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 11:25:38,746 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:25:38,779 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:38,780 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 30 treesize of output 29 [2019-05-23 11:25:38,781 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:38,832 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:38,833 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 11:25:38,833 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:25:38,859 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:38,860 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 22 treesize of output 21 [2019-05-23 11:25:38,861 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:38,887 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:38,888 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 11:25:38,888 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:12 [2019-05-23 11:25:38,917 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 16 treesize of output 8 [2019-05-23 11:25:38,918 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:38,919 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:38,920 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 11:25:38,920 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:25:38,975 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:38,997 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:38,997 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:25:38,998 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:25:38,999 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:25:38,999 INFO L146 ILogger]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:25:39,000 INFO L146 ILogger]: Start difference. First operand 87 states and 92 transitions. Second operand 13 states. [2019-05-23 11:25:39,961 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:39,961 INFO L146 ILogger]: Finished difference Result 270 states and 284 transitions. [2019-05-23 11:25:39,962 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:25:39,962 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 78 [2019-05-23 11:25:39,962 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:39,966 INFO L146 ILogger]: With dead ends: 270 [2019-05-23 11:25:39,967 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:25:39,969 INFO L146 ILogger]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:25:39,970 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:25:39,990 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 149. [2019-05-23 11:25:39,990 INFO L146 ILogger]: Start removeUnreachable. Operand 149 states. [2019-05-23 11:25:39,996 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 149 states to 149 states and 159 transitions. [2019-05-23 11:25:39,999 INFO L146 ILogger]: Start accepts. Automaton has 149 states and 159 transitions. Word has length 78 [2019-05-23 11:25:40,000 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:40,000 INFO L146 ILogger]: Abstraction has 149 states and 159 transitions. [2019-05-23 11:25:40,000 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:25:40,000 INFO L146 ILogger]: Start isEmpty. Operand 149 states and 159 transitions. [2019-05-23 11:25:40,003 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:25:40,003 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:40,003 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:40,005 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:40,005 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:40,005 INFO L146 ILogger]: Analyzing trace with hash -910470138, now seen corresponding path program 1 times [2019-05-23 11:25:40,006 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:40,006 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:40,008 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:40,008 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:40,008 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:40,052 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:40,463 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:40,463 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:40,463 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 11:25:40,472 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:40,507 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:40,508 INFO L146 ILogger]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:25:40,512 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:40,615 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 16 treesize of output 12 [2019-05-23 11:25:40,616 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,655 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,656 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 11:25:40,657 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:40,698 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:40,699 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 29 treesize of output 28 [2019-05-23 11:25:40,699 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,715 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,716 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 11:25:40,716 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:40,759 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:40,760 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 29 treesize of output 28 [2019-05-23 11:25:40,760 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,796 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,796 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 11:25:40,797 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:40,861 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:40,862 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 21 treesize of output 20 [2019-05-23 11:25:40,863 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,881 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,882 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 11:25:40,882 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2019-05-23 11:25:40,974 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:40,975 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,978 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,978 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 11:25:40,978 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:41,029 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:41,048 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:41,048 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2019-05-23 11:25:41,049 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:25:41,049 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:25:41,050 INFO L146 ILogger]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:25:41,050 INFO L146 ILogger]: Start difference. First operand 149 states and 159 transitions. Second operand 21 states. [2019-05-23 11:25:42,396 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:42,396 INFO L146 ILogger]: Finished difference Result 280 states and 298 transitions. [2019-05-23 11:25:42,396 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:25:42,397 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 78 [2019-05-23 11:25:42,397 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:42,400 INFO L146 ILogger]: With dead ends: 280 [2019-05-23 11:25:42,401 INFO L146 ILogger]: Without dead ends: 278 [2019-05-23 11:25:42,402 INFO L146 ILogger]: 0 DeclaredPredicates, 108 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:25:42,403 INFO L146 ILogger]: Start minimizeSevpa. Operand 278 states. [2019-05-23 11:25:42,417 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 278 to 204. [2019-05-23 11:25:42,417 INFO L146 ILogger]: Start removeUnreachable. Operand 204 states. [2019-05-23 11:25:42,419 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 204 states to 204 states and 219 transitions. [2019-05-23 11:25:42,419 INFO L146 ILogger]: Start accepts. Automaton has 204 states and 219 transitions. Word has length 78 [2019-05-23 11:25:42,420 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:42,420 INFO L146 ILogger]: Abstraction has 204 states and 219 transitions. [2019-05-23 11:25:42,420 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:25:42,420 INFO L146 ILogger]: Start isEmpty. Operand 204 states and 219 transitions. [2019-05-23 11:25:42,423 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:25:42,423 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:42,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:42,425 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:42,425 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:42,425 INFO L146 ILogger]: Analyzing trace with hash -224804807, now seen corresponding path program 1 times [2019-05-23 11:25:42,426 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:42,426 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:42,427 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:42,429 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:42,429 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:42,448 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:42,968 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:42,968 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:42,968 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 11:25:42,977 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:43,013 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:43,015 INFO L146 ILogger]: Trace formula consists of 143 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:25:43,019 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:43,098 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:43,098 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:43,112 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:43,112 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 11:25:43,113 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:25:43,216 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:43,217 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 30 treesize of output 29 [2019-05-23 11:25:43,218 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:43,252 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:43,253 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 11:25:43,253 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:25:43,266 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:43,267 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 24 treesize of output 23 [2019-05-23 11:25:43,267 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:43,297 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:43,297 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 11:25:43,298 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2019-05-23 11:25:43,406 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 16 treesize of output 8 [2019-05-23 11:25:43,407 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:43,408 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:43,408 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 11:25:43,409 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:25:43,450 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:43,468 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:43,469 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2019-05-23 11:25:43,469 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:25:43,470 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:25:43,470 INFO L146 ILogger]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:25:43,470 INFO L146 ILogger]: Start difference. First operand 204 states and 219 transitions. Second operand 21 states. [2019-05-23 11:25:44,304 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:44,304 INFO L146 ILogger]: Finished difference Result 444 states and 472 transitions. [2019-05-23 11:25:44,308 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:25:44,308 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 88 [2019-05-23 11:25:44,308 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:44,311 INFO L146 ILogger]: With dead ends: 444 [2019-05-23 11:25:44,311 INFO L146 ILogger]: Without dead ends: 442 [2019-05-23 11:25:44,312 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=256, Invalid=934, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:25:44,313 INFO L146 ILogger]: Start minimizeSevpa. Operand 442 states. [2019-05-23 11:25:44,334 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 442 to 288. [2019-05-23 11:25:44,334 INFO L146 ILogger]: Start removeUnreachable. Operand 288 states. [2019-05-23 11:25:44,336 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 288 states to 288 states and 310 transitions. [2019-05-23 11:25:44,337 INFO L146 ILogger]: Start accepts. Automaton has 288 states and 310 transitions. Word has length 88 [2019-05-23 11:25:44,337 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:44,337 INFO L146 ILogger]: Abstraction has 288 states and 310 transitions. [2019-05-23 11:25:44,337 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:25:44,337 INFO L146 ILogger]: Start isEmpty. Operand 288 states and 310 transitions. [2019-05-23 11:25:44,341 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:25:44,341 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:44,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:44,342 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:44,342 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:44,342 INFO L146 ILogger]: Analyzing trace with hash 6822041, now seen corresponding path program 1 times [2019-05-23 11:25:44,342 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:44,343 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:44,343 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:44,344 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:44,344 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:44,361 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:44,679 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:44,679 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:44,680 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 11:25:44,688 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:44,710 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:44,712 INFO L146 ILogger]: Trace formula consists of 144 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:25:44,716 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:44,925 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 16 treesize of output 12 [2019-05-23 11:25:44,925 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:44,933 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:44,934 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 11:25:44,934 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:44,971 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:44,972 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 29 treesize of output 28 [2019-05-23 11:25:44,973 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:44,983 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:44,984 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 11:25:44,984 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:44,997 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:44,998 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 23 treesize of output 22 [2019-05-23 11:25:44,998 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:45,006 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:45,006 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 11:25:45,007 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:16 [2019-05-23 11:25:45,084 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:45,085 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:45,088 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:45,088 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 11:25:45,088 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:45,152 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:45,170 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:45,170 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:25:45,170 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:25:45,171 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:25:45,171 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:25:45,171 INFO L146 ILogger]: Start difference. First operand 288 states and 310 transitions. Second operand 24 states. [2019-05-23 11:25:46,555 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:46,555 INFO L146 ILogger]: Finished difference Result 484 states and 518 transitions. [2019-05-23 11:25:46,555 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:25:46,556 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 88 [2019-05-23 11:25:46,556 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:46,558 INFO L146 ILogger]: With dead ends: 484 [2019-05-23 11:25:46,559 INFO L146 ILogger]: Without dead ends: 482 [2019-05-23 11:25:46,560 INFO L146 ILogger]: 0 DeclaredPredicates, 123 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=431, Invalid=1375, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:25:46,561 INFO L146 ILogger]: Start minimizeSevpa. Operand 482 states. [2019-05-23 11:25:46,579 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 482 to 404. [2019-05-23 11:25:46,580 INFO L146 ILogger]: Start removeUnreachable. Operand 404 states. [2019-05-23 11:25:46,581 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 404 states to 404 states and 437 transitions. [2019-05-23 11:25:46,582 INFO L146 ILogger]: Start accepts. Automaton has 404 states and 437 transitions. Word has length 88 [2019-05-23 11:25:46,582 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:46,582 INFO L146 ILogger]: Abstraction has 404 states and 437 transitions. [2019-05-23 11:25:46,582 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:25:46,582 INFO L146 ILogger]: Start isEmpty. Operand 404 states and 437 transitions. [2019-05-23 11:25:46,585 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:25:46,585 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:46,586 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:46,586 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:46,586 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:46,586 INFO L146 ILogger]: Analyzing trace with hash -2028105460, now seen corresponding path program 2 times [2019-05-23 11:25:46,586 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:46,587 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:46,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:46,587 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:46,588 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:46,603 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:47,458 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:47,459 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:47,459 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 11:25:47,469 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:47,523 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:47,523 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:47,525 INFO L146 ILogger]: Trace formula consists of 158 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:25:47,529 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:47,764 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:47,764 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,772 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:47,773 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 11:25:47,774 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:23 [2019-05-23 11:25:47,809 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:47,810 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 24 treesize of output 23 [2019-05-23 11:25:47,811 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,816 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:47,816 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 11:25:47,817 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:17 [2019-05-23 11:25:47,987 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 16 treesize of output 8 [2019-05-23 11:25:47,988 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:48,006 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:48,007 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 11:25:48,007 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-05-23 11:25:48,205 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:48,238 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:48,238 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2019-05-23 11:25:48,238 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:25:48,239 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:25:48,239 INFO L146 ILogger]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:25:48,239 INFO L146 ILogger]: Start difference. First operand 404 states and 437 transitions. Second operand 27 states. [2019-05-23 11:25:49,652 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:49,653 INFO L146 ILogger]: Finished difference Result 726 states and 781 transitions. [2019-05-23 11:25:49,653 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:25:49,653 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 98 [2019-05-23 11:25:49,654 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:49,657 INFO L146 ILogger]: With dead ends: 726 [2019-05-23 11:25:49,657 INFO L146 ILogger]: Without dead ends: 724 [2019-05-23 11:25:49,658 INFO L146 ILogger]: 0 DeclaredPredicates, 134 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=379, Invalid=1877, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:25:49,659 INFO L146 ILogger]: Start minimizeSevpa. Operand 724 states. [2019-05-23 11:25:49,676 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 724 to 496. [2019-05-23 11:25:49,676 INFO L146 ILogger]: Start removeUnreachable. Operand 496 states. [2019-05-23 11:25:49,678 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 496 states to 496 states and 538 transitions. [2019-05-23 11:25:49,678 INFO L146 ILogger]: Start accepts. Automaton has 496 states and 538 transitions. Word has length 98 [2019-05-23 11:25:49,679 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:49,679 INFO L146 ILogger]: Abstraction has 496 states and 538 transitions. [2019-05-23 11:25:49,679 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:25:49,679 INFO L146 ILogger]: Start isEmpty. Operand 496 states and 538 transitions. [2019-05-23 11:25:49,684 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:25:49,685 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:49,685 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:49,685 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:49,685 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:49,688 INFO L146 ILogger]: Analyzing trace with hash -2090434196, now seen corresponding path program 1 times [2019-05-23 11:25:49,688 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:49,688 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:49,689 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:49,689 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:49,689 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:49,716 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:50,185 WARN L146 ILogger]: Spent 292.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-05-23 11:25:50,371 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2019-05-23 11:25:50,498 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:50,498 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:50,499 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 11:25:50,508 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:50,532 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:50,534 INFO L146 ILogger]: Trace formula consists of 159 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:25:50,537 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:50,664 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 16 treesize of output 12 [2019-05-23 11:25:50,664 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,674 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,675 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 11:25:50,675 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:50,738 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,739 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:25:50,739 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,749 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,749 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 11:25:50,750 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:16 [2019-05-23 11:25:50,955 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:50,955 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,959 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,959 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 11:25:50,960 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:51,046 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:51,065 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:51,065 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2019-05-23 11:25:51,065 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:25:51,067 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:25:51,067 INFO L146 ILogger]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:25:51,067 INFO L146 ILogger]: Start difference. First operand 496 states and 538 transitions. Second operand 28 states. [2019-05-23 11:25:53,477 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:53,477 INFO L146 ILogger]: Finished difference Result 828 states and 892 transitions. [2019-05-23 11:25:53,478 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:25:53,478 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 98 [2019-05-23 11:25:53,478 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:53,482 INFO L146 ILogger]: With dead ends: 828 [2019-05-23 11:25:53,482 INFO L146 ILogger]: Without dead ends: 826 [2019-05-23 11:25:53,483 INFO L146 ILogger]: 0 DeclaredPredicates, 138 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=520, Invalid=2132, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:25:53,484 INFO L146 ILogger]: Start minimizeSevpa. Operand 826 states. [2019-05-23 11:25:53,504 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 826 to 737. [2019-05-23 11:25:53,504 INFO L146 ILogger]: Start removeUnreachable. Operand 737 states. [2019-05-23 11:25:53,507 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 737 states to 737 states and 801 transitions. [2019-05-23 11:25:53,507 INFO L146 ILogger]: Start accepts. Automaton has 737 states and 801 transitions. Word has length 98 [2019-05-23 11:25:53,507 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:53,507 INFO L146 ILogger]: Abstraction has 737 states and 801 transitions. [2019-05-23 11:25:53,507 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:25:53,508 INFO L146 ILogger]: Start isEmpty. Operand 737 states and 801 transitions. [2019-05-23 11:25:53,509 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 109 [2019-05-23 11:25:53,509 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:53,510 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:53,510 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:53,510 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:53,510 INFO L146 ILogger]: Analyzing trace with hash 496809503, now seen corresponding path program 3 times [2019-05-23 11:25:53,511 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:53,512 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:53,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:53,513 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:53,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:53,535 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:53,840 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:53,841 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:53,841 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 11:25:53,850 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:53,883 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:25:53,883 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:53,884 INFO L146 ILogger]: Trace formula consists of 173 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:25:53,887 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:54,042 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:25:54,043 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:54,049 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:54,050 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 11:25:54,050 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2019-05-23 11:25:54,268 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 16 treesize of output 8 [2019-05-23 11:25:54,269 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:54,271 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:54,272 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 11:25:54,272 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-05-23 11:25:54,363 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:54,382 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:54,382 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2019-05-23 11:25:54,383 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:25:54,383 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:25:54,383 INFO L146 ILogger]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:25:54,384 INFO L146 ILogger]: Start difference. First operand 737 states and 801 transitions. Second operand 31 states. [2019-05-23 11:25:54,834 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-05-23 11:25:55,831 WARN L146 ILogger]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-05-23 11:25:56,658 WARN L146 ILogger]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2019-05-23 11:25:58,088 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:58,088 INFO L146 ILogger]: Finished difference Result 1264 states and 1369 transitions. [2019-05-23 11:25:58,088 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:25:58,089 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 108 [2019-05-23 11:25:58,089 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:58,094 INFO L146 ILogger]: With dead ends: 1264 [2019-05-23 11:25:58,094 INFO L146 ILogger]: Without dead ends: 1262 [2019-05-23 11:25:58,096 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=505, Invalid=3035, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:25:58,097 INFO L146 ILogger]: Start minimizeSevpa. Operand 1262 states. [2019-05-23 11:25:58,121 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1262 to 793. [2019-05-23 11:25:58,121 INFO L146 ILogger]: Start removeUnreachable. Operand 793 states. [2019-05-23 11:25:58,123 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 793 states to 793 states and 866 transitions. [2019-05-23 11:25:58,123 INFO L146 ILogger]: Start accepts. Automaton has 793 states and 866 transitions. Word has length 108 [2019-05-23 11:25:58,124 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:58,124 INFO L146 ILogger]: Abstraction has 793 states and 866 transitions. [2019-05-23 11:25:58,124 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:25:58,124 INFO L146 ILogger]: Start isEmpty. Operand 793 states and 866 transitions. [2019-05-23 11:25:58,126 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 109 [2019-05-23 11:25:58,126 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:58,126 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:58,126 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:58,126 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:58,127 INFO L146 ILogger]: Analyzing trace with hash 371605119, now seen corresponding path program 1 times [2019-05-23 11:25:58,127 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:58,127 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:58,128 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:58,128 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:58,128 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:58,141 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:58,419 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:58,419 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:58,419 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:58,427 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:58,461 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:58,462 INFO L146 ILogger]: Trace formula consists of 174 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:25:58,464 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:58,580 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 13 treesize of output 9 [2019-05-23 11:25:58,580 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:58,586 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:58,586 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 11:25:58,586 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-05-23 11:25:58,851 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:58,851 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:58,855 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:58,855 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 11:25:58,855 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:58,953 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:58,972 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:58,972 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:25:58,972 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:25:58,973 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:25:58,973 INFO L146 ILogger]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:25:58,974 INFO L146 ILogger]: Start difference. First operand 793 states and 866 transitions. Second operand 32 states. [2019-05-23 11:26:01,654 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:01,654 INFO L146 ILogger]: Finished difference Result 1406 states and 1523 transitions. [2019-05-23 11:26:01,655 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:26:01,655 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 108 [2019-05-23 11:26:01,655 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:01,661 INFO L146 ILogger]: With dead ends: 1406 [2019-05-23 11:26:01,662 INFO L146 ILogger]: Without dead ends: 1404 [2019-05-23 11:26:01,664 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=688, Invalid=3344, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:26:01,665 INFO L146 ILogger]: Start minimizeSevpa. Operand 1404 states. [2019-05-23 11:26:01,700 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1404 to 1282. [2019-05-23 11:26:01,700 INFO L146 ILogger]: Start removeUnreachable. Operand 1282 states. [2019-05-23 11:26:01,703 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1399 transitions. [2019-05-23 11:26:01,703 INFO L146 ILogger]: Start accepts. Automaton has 1282 states and 1399 transitions. Word has length 108 [2019-05-23 11:26:01,704 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:01,704 INFO L146 ILogger]: Abstraction has 1282 states and 1399 transitions. [2019-05-23 11:26:01,704 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:26:01,704 INFO L146 ILogger]: Start isEmpty. Operand 1282 states and 1399 transitions. [2019-05-23 11:26:01,707 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:26:01,707 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:01,707 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:01,708 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:01,708 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:01,708 INFO L146 ILogger]: Analyzing trace with hash -64299150, now seen corresponding path program 4 times [2019-05-23 11:26:01,708 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:01,708 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:01,709 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:01,709 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:01,709 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:01,720 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:02,569 INFO L146 ILogger]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:02,569 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:02,569 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:02,578 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:02,604 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:02,604 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:02,605 INFO L146 ILogger]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:26:02,607 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:03,220 INFO L146 ILogger]: Checked inductivity of 85 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:03,238 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:03,239 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:26:03,239 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:26:03,239 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:26:03,240 INFO L146 ILogger]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:26:03,240 INFO L146 ILogger]: Start difference. First operand 1282 states and 1399 transitions. Second operand 32 states. [2019-05-23 11:26:04,163 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:04,163 INFO L146 ILogger]: Finished difference Result 2235 states and 2420 transitions. [2019-05-23 11:26:04,163 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:26:04,163 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 118 [2019-05-23 11:26:04,164 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:04,172 INFO L146 ILogger]: With dead ends: 2235 [2019-05-23 11:26:04,173 INFO L146 ILogger]: Without dead ends: 2181 [2019-05-23 11:26:04,175 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=440, Invalid=1630, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:26:04,177 INFO L146 ILogger]: Start minimizeSevpa. Operand 2181 states. [2019-05-23 11:26:04,219 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 2181 to 1287. [2019-05-23 11:26:04,219 INFO L146 ILogger]: Start removeUnreachable. Operand 1287 states. [2019-05-23 11:26:04,222 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1389 transitions. [2019-05-23 11:26:04,222 INFO L146 ILogger]: Start accepts. Automaton has 1287 states and 1389 transitions. Word has length 118 [2019-05-23 11:26:04,223 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:04,223 INFO L146 ILogger]: Abstraction has 1287 states and 1389 transitions. [2019-05-23 11:26:04,223 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:26:04,223 INFO L146 ILogger]: Start isEmpty. Operand 1287 states and 1389 transitions. [2019-05-23 11:26:04,226 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:26:04,226 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:04,226 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 11:26:04,227 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:04,227 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:04,227 INFO L146 ILogger]: Analyzing trace with hash 1547733552, now seen corresponding path program 2 times [2019-05-23 11:26:04,227 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:04,227 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:04,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:04,228 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:04,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:04,245 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:04,646 WARN L146 ILogger]: Spent 190.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2019-05-23 11:26:05,023 INFO L146 ILogger]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:05,024 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:05,024 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:05,032 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:05,064 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:05,064 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:05,065 INFO L146 ILogger]: Trace formula consists of 206 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:26:05,067 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:05,153 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:26:05,153 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:05,164 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:05,165 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 11:26:05,165 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:23 [2019-05-23 11:26:05,194 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:05,195 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 30 treesize of output 29 [2019-05-23 11:26:05,196 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:05,204 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:05,205 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 11:26:05,205 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:23 [2019-05-23 11:26:05,210 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:05,211 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 30 treesize of output 29 [2019-05-23 11:26:05,211 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:05,332 WARN L146 ILogger]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-05-23 11:26:05,333 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:05,333 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 11:26:05,333 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:23 [2019-05-23 11:26:05,363 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:05,364 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 30 treesize of output 29 [2019-05-23 11:26:05,364 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:05,376 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:05,377 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 11:26:05,377 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:23 [2019-05-23 11:26:05,420 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:05,421 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 25 treesize of output 24 [2019-05-23 11:26:05,422 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:05,431 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:05,431 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 11:26:05,432 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:18 [2019-05-23 11:26:05,437 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:05,438 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 25 treesize of output 24 [2019-05-23 11:26:05,439 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:05,449 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:05,449 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 11:26:05,450 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:18 [2019-05-23 11:26:05,454 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:05,455 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 25 treesize of output 24 [2019-05-23 11:26:05,455 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:05,465 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:05,466 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 11:26:05,466 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:18 [2019-05-23 11:26:05,471 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:05,471 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 25 treesize of output 24 [2019-05-23 11:26:05,472 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:05,482 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:05,483 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 11:26:05,483 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:15 [2019-05-23 11:26:05,529 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 16 treesize of output 8 [2019-05-23 11:26:05,530 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:05,536 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:05,536 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 11:26:05,536 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-05-23 11:26:05,622 INFO L146 ILogger]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:05,640 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:05,641 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2019-05-23 11:26:05,641 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:26:05,641 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:26:05,642 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:26:05,642 INFO L146 ILogger]: Start difference. First operand 1287 states and 1389 transitions. Second operand 25 states. [2019-05-23 11:26:06,444 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:06,445 INFO L146 ILogger]: Finished difference Result 1927 states and 2079 transitions. [2019-05-23 11:26:06,445 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:26:06,445 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 130 [2019-05-23 11:26:06,445 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:06,452 INFO L146 ILogger]: With dead ends: 1927 [2019-05-23 11:26:06,452 INFO L146 ILogger]: Without dead ends: 1925 [2019-05-23 11:26:06,453 INFO L146 ILogger]: 0 DeclaredPredicates, 168 GetRequests, 126 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=273, Invalid=1133, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:26:06,455 INFO L146 ILogger]: Start minimizeSevpa. Operand 1925 states. [2019-05-23 11:26:06,508 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1925 to 1723. [2019-05-23 11:26:06,508 INFO L146 ILogger]: Start removeUnreachable. Operand 1723 states. [2019-05-23 11:26:06,512 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 1865 transitions. [2019-05-23 11:26:06,512 INFO L146 ILogger]: Start accepts. Automaton has 1723 states and 1865 transitions. Word has length 130 [2019-05-23 11:26:06,512 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:06,513 INFO L146 ILogger]: Abstraction has 1723 states and 1865 transitions. [2019-05-23 11:26:06,513 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:26:06,513 INFO L146 ILogger]: Start isEmpty. Operand 1723 states and 1865 transitions. [2019-05-23 11:26:06,516 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:26:06,517 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:06,517 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 11:26:06,517 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:06,517 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:06,518 INFO L146 ILogger]: Analyzing trace with hash -1065559408, now seen corresponding path program 1 times [2019-05-23 11:26:06,518 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:06,518 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:06,519 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:06,519 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:06,519 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:06,531 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:07,127 WARN L146 ILogger]: Spent 278.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2019-05-23 11:26:07,658 WARN L146 ILogger]: Spent 425.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 13 [2019-05-23 11:26:08,012 INFO L146 ILogger]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:08,013 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:08,013 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:08,023 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:08,055 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:08,056 INFO L146 ILogger]: Trace formula consists of 207 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:26:08,058 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:08,174 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 16 treesize of output 12 [2019-05-23 11:26:08,175 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,183 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,183 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 11:26:08,184 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:26:08,218 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:08,219 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 29 treesize of output 28 [2019-05-23 11:26:08,219 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,238 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,239 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 11:26:08,239 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:26:08,245 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:08,246 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 29 treesize of output 28 [2019-05-23 11:26:08,246 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,257 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,257 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 11:26:08,258 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:26:08,263 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:08,263 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 29 treesize of output 28 [2019-05-23 11:26:08,264 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,272 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,273 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 11:26:08,273 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:26:08,326 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:08,327 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 24 treesize of output 23 [2019-05-23 11:26:08,327 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,338 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,338 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 11:26:08,338 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:08,348 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:08,348 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 24 treesize of output 23 [2019-05-23 11:26:08,349 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,356 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,357 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 11:26:08,357 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:08,362 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:08,362 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 24 treesize of output 23 [2019-05-23 11:26:08,363 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,373 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,374 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 11:26:08,374 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:08,395 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:08,395 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 24 treesize of output 23 [2019-05-23 11:26:08,396 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,404 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,405 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 11:26:08,405 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:14 [2019-05-23 11:26:08,720 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:08,720 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,726 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,726 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 11:26:08,727 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:08,844 INFO L146 ILogger]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:08,863 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:08,863 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2019-05-23 11:26:08,863 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:26:08,864 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:26:08,864 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:26:08,864 INFO L146 ILogger]: Start difference. First operand 1723 states and 1865 transitions. Second operand 26 states. [2019-05-23 11:26:10,982 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:10,982 INFO L146 ILogger]: Finished difference Result 2547 states and 2727 transitions. [2019-05-23 11:26:10,983 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:26:10,983 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 130 [2019-05-23 11:26:10,983 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:10,992 INFO L146 ILogger]: With dead ends: 2547 [2019-05-23 11:26:10,992 INFO L146 ILogger]: Without dead ends: 2545 [2019-05-23 11:26:10,994 INFO L146 ILogger]: 0 DeclaredPredicates, 191 GetRequests, 126 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=745, Invalid=2915, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:26:10,995 INFO L146 ILogger]: Start minimizeSevpa. Operand 2545 states. [2019-05-23 11:26:11,028 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 2545 to 704. [2019-05-23 11:26:11,028 INFO L146 ILogger]: Start removeUnreachable. Operand 704 states. [2019-05-23 11:26:11,029 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 704 states to 704 states and 755 transitions. [2019-05-23 11:26:11,030 INFO L146 ILogger]: Start accepts. Automaton has 704 states and 755 transitions. Word has length 130 [2019-05-23 11:26:11,030 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:11,030 INFO L146 ILogger]: Abstraction has 704 states and 755 transitions. [2019-05-23 11:26:11,030 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:26:11,030 INFO L146 ILogger]: Start isEmpty. Operand 704 states and 755 transitions. [2019-05-23 11:26:11,032 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:26:11,032 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:11,033 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 11:26:11,033 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:11,033 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:11,033 INFO L146 ILogger]: Analyzing trace with hash -767192509, now seen corresponding path program 5 times [2019-05-23 11:26:11,033 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:11,033 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:11,034 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:11,034 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:11,034 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:11,053 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:11,363 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:11,364 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:11,364 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:11,373 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:26:11,415 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:26:11,415 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:11,416 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:26:11,418 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:11,489 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:26:11,490 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,499 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,499 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 11:26:11,500 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:26:11,523 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,524 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 30 treesize of output 29 [2019-05-23 11:26:11,524 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,532 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,533 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 11:26:11,533 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:26:11,553 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,554 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 30 treesize of output 29 [2019-05-23 11:26:11,554 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,563 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,564 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 11:26:11,564 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:26:11,611 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,611 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 27 treesize of output 26 [2019-05-23 11:26:11,612 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,621 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,621 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 11:26:11,622 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:11,644 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,645 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 27 treesize of output 26 [2019-05-23 11:26:11,645 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,657 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,658 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 11:26:11,658 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:11,669 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,671 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 27 treesize of output 26 [2019-05-23 11:26:11,671 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,680 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,680 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 11:26:11,681 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:11,687 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,688 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 27 treesize of output 26 [2019-05-23 11:26:11,688 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,704 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,704 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 11:26:11,705 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:14 [2019-05-23 11:26:12,058 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 16 treesize of output 8 [2019-05-23 11:26:12,058 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,066 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:12,066 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 11:26:12,066 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:26:12,142 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:12,162 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:12,162 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2019-05-23 11:26:12,162 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:26:12,162 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:26:12,163 INFO L146 ILogger]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:26:12,163 INFO L146 ILogger]: Start difference. First operand 704 states and 755 transitions. Second operand 26 states. [2019-05-23 11:26:13,097 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:13,097 INFO L146 ILogger]: Finished difference Result 1077 states and 1152 transitions. [2019-05-23 11:26:13,097 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:26:13,097 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 140 [2019-05-23 11:26:13,097 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:13,100 INFO L146 ILogger]: With dead ends: 1077 [2019-05-23 11:26:13,100 INFO L146 ILogger]: Without dead ends: 1075 [2019-05-23 11:26:13,101 INFO L146 ILogger]: 0 DeclaredPredicates, 182 GetRequests, 134 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:26:13,102 INFO L146 ILogger]: Start minimizeSevpa. Operand 1075 states. [2019-05-23 11:26:13,134 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1075 to 924. [2019-05-23 11:26:13,135 INFO L146 ILogger]: Start removeUnreachable. Operand 924 states. [2019-05-23 11:26:13,137 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 924 states to 924 states and 995 transitions. [2019-05-23 11:26:13,137 INFO L146 ILogger]: Start accepts. Automaton has 924 states and 995 transitions. Word has length 140 [2019-05-23 11:26:13,137 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:13,137 INFO L146 ILogger]: Abstraction has 924 states and 995 transitions. [2019-05-23 11:26:13,137 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:26:13,137 INFO L146 ILogger]: Start isEmpty. Operand 924 states and 995 transitions. [2019-05-23 11:26:13,140 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:26:13,140 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:13,140 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 11:26:13,141 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:13,141 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:13,141 INFO L146 ILogger]: Analyzing trace with hash 1478130339, now seen corresponding path program 1 times [2019-05-23 11:26:13,141 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:13,141 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:13,142 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:13,142 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:13,142 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:13,154 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:13,508 INFO L146 ILogger]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:13,509 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:13,509 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:13,519 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:13,552 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:13,554 INFO L146 ILogger]: Trace formula consists of 222 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:26:13,557 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:13,723 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 16 treesize of output 12 [2019-05-23 11:26:13,724 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:13,737 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:13,737 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 11:26:13,738 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:26:13,778 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:13,779 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 29 treesize of output 28 [2019-05-23 11:26:13,779 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:13,793 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:13,793 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 11:26:13,793 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:26:13,800 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:13,800 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 29 treesize of output 28 [2019-05-23 11:26:13,801 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:13,812 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:13,813 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 11:26:13,813 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:26:13,967 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:13,967 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 26 treesize of output 25 [2019-05-23 11:26:13,968 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:13,978 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:13,979 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 11:26:13,979 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:13,984 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:13,985 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 26 treesize of output 25 [2019-05-23 11:26:13,985 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:13,994 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:13,995 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 11:26:13,995 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:14,036 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:14,037 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 26 treesize of output 25 [2019-05-23 11:26:14,037 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,046 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:14,047 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 11:26:14,047 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:14,054 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:14,055 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 26 treesize of output 25 [2019-05-23 11:26:14,055 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,065 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:14,066 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 11:26:14,066 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:16 [2019-05-23 11:26:14,158 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:14,158 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,169 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:14,170 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 11:26:14,170 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:14,287 INFO L146 ILogger]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:14,305 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:14,306 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2019-05-23 11:26:14,306 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:26:14,306 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:26:14,307 INFO L146 ILogger]: CoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:26:14,307 INFO L146 ILogger]: Start difference. First operand 924 states and 995 transitions. Second operand 29 states. [2019-05-23 11:26:15,957 WARN L146 ILogger]: Spent 265.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2019-05-23 11:26:17,563 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:17,564 INFO L146 ILogger]: Finished difference Result 1447 states and 1536 transitions. [2019-05-23 11:26:17,565 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:26:17,566 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 140 [2019-05-23 11:26:17,566 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:17,571 INFO L146 ILogger]: With dead ends: 1447 [2019-05-23 11:26:17,571 INFO L146 ILogger]: Without dead ends: 1445 [2019-05-23 11:26:17,573 INFO L146 ILogger]: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1397 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1057, Invalid=4493, Unknown=0, NotChecked=0, Total=5550 [2019-05-23 11:26:17,574 INFO L146 ILogger]: Start minimizeSevpa. Operand 1445 states. [2019-05-23 11:26:17,595 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1445 to 397. [2019-05-23 11:26:17,596 INFO L146 ILogger]: Start removeUnreachable. Operand 397 states. [2019-05-23 11:26:17,597 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 397 states to 397 states and 423 transitions. [2019-05-23 11:26:17,597 INFO L146 ILogger]: Start accepts. Automaton has 397 states and 423 transitions. Word has length 140 [2019-05-23 11:26:17,597 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:17,597 INFO L146 ILogger]: Abstraction has 397 states and 423 transitions. [2019-05-23 11:26:17,597 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:26:17,598 INFO L146 ILogger]: Start isEmpty. Operand 397 states and 423 transitions. [2019-05-23 11:26:17,599 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 151 [2019-05-23 11:26:17,599 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:17,599 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:17,600 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:17,600 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:17,600 INFO L146 ILogger]: Analyzing trace with hash 2023349910, now seen corresponding path program 6 times [2019-05-23 11:26:17,600 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:17,600 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:17,601 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:17,601 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:17,601 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:17,614 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:18,009 INFO L146 ILogger]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:18,009 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:18,009 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:18,017 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:26:18,093 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:26:18,093 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:18,095 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:26:18,097 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:18,196 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:26:18,197 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,207 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:18,207 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 11:26:18,207 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:23 [2019-05-23 11:26:18,237 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,238 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 30 treesize of output 29 [2019-05-23 11:26:18,238 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,252 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:18,253 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 11:26:18,253 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:23 [2019-05-23 11:26:18,311 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,312 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 27 treesize of output 26 [2019-05-23 11:26:18,313 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,321 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:18,322 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 11:26:18,322 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:26:18,327 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,328 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 27 treesize of output 26 [2019-05-23 11:26:18,329 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,338 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:18,339 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 11:26:18,339 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:26:18,351 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,352 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 27 treesize of output 26 [2019-05-23 11:26:18,353 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,362 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:18,362 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 11:26:18,363 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:26:18,369 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:18,370 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 27 treesize of output 26 [2019-05-23 11:26:18,370 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,382 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:18,383 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 11:26:18,383 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:17 [2019-05-23 11:26:18,534 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 16 treesize of output 8 [2019-05-23 11:26:18,534 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:18,537 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:18,538 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 11:26:18,538 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-05-23 11:26:18,675 INFO L146 ILogger]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:18,704 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:18,704 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:26:18,704 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:26:18,704 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:26:18,705 INFO L146 ILogger]: CoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:26:18,705 INFO L146 ILogger]: Start difference. First operand 397 states and 423 transitions. Second operand 32 states. [2019-05-23 11:26:20,310 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:20,310 INFO L146 ILogger]: Finished difference Result 765 states and 813 transitions. [2019-05-23 11:26:20,311 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:26:20,311 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 150 [2019-05-23 11:26:20,311 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:20,315 INFO L146 ILogger]: With dead ends: 765 [2019-05-23 11:26:20,315 INFO L146 ILogger]: Without dead ends: 763 [2019-05-23 11:26:20,317 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 139 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=550, Invalid=2990, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:26:20,317 INFO L146 ILogger]: Start minimizeSevpa. Operand 763 states. [2019-05-23 11:26:20,341 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 763 to 508. [2019-05-23 11:26:20,341 INFO L146 ILogger]: Start removeUnreachable. Operand 508 states. [2019-05-23 11:26:20,342 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 508 states to 508 states and 544 transitions. [2019-05-23 11:26:20,343 INFO L146 ILogger]: Start accepts. Automaton has 508 states and 544 transitions. Word has length 150 [2019-05-23 11:26:20,343 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:20,343 INFO L146 ILogger]: Abstraction has 508 states and 544 transitions. [2019-05-23 11:26:20,343 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:26:20,343 INFO L146 ILogger]: Start isEmpty. Operand 508 states and 544 transitions. [2019-05-23 11:26:20,345 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 151 [2019-05-23 11:26:20,345 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:20,345 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:20,346 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:20,346 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:20,346 INFO L146 ILogger]: Analyzing trace with hash 1565351670, now seen corresponding path program 1 times [2019-05-23 11:26:20,346 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:20,346 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:20,347 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:20,347 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:20,347 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:20,359 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:20,803 INFO L146 ILogger]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:20,803 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:20,803 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:20,811 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:20,845 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:20,847 INFO L146 ILogger]: Trace formula consists of 237 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:26:20,848 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:21,002 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 16 treesize of output 12 [2019-05-23 11:26:21,003 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,072 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,073 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 11:26:21,073 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:26:21,105 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:21,106 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 29 treesize of output 28 [2019-05-23 11:26:21,106 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,116 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,117 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 11:26:21,117 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:26:21,173 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:21,173 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 26 treesize of output 25 [2019-05-23 11:26:21,173 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,182 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,183 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 11:26:21,183 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:21,190 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:21,191 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 26 treesize of output 25 [2019-05-23 11:26:21,191 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,199 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,200 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 11:26:21,200 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:21,205 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:21,205 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 26 treesize of output 25 [2019-05-23 11:26:21,206 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,216 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,216 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 11:26:21,216 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:21,221 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:21,222 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 26 treesize of output 25 [2019-05-23 11:26:21,222 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,238 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,239 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 11:26:21,239 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:16 [2019-05-23 11:26:21,397 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:21,397 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,399 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,400 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 11:26:21,400 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:21,564 INFO L146 ILogger]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:21,582 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:21,583 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2019-05-23 11:26:21,583 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:26:21,583 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:26:21,584 INFO L146 ILogger]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:26:21,584 INFO L146 ILogger]: Start difference. First operand 508 states and 544 transitions. Second operand 33 states. [2019-05-23 11:26:25,509 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:25,509 INFO L146 ILogger]: Finished difference Result 971 states and 1025 transitions. [2019-05-23 11:26:25,510 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-05-23 11:26:25,510 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 150 [2019-05-23 11:26:25,510 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:25,514 INFO L146 ILogger]: With dead ends: 971 [2019-05-23 11:26:25,514 INFO L146 ILogger]: Without dead ends: 969 [2019-05-23 11:26:25,516 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 139 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2211 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1334, Invalid=6856, Unknown=0, NotChecked=0, Total=8190 [2019-05-23 11:26:25,517 INFO L146 ILogger]: Start minimizeSevpa. Operand 969 states. [2019-05-23 11:26:25,533 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 969 to 239. [2019-05-23 11:26:25,534 INFO L146 ILogger]: Start removeUnreachable. Operand 239 states. [2019-05-23 11:26:25,534 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 239 states to 239 states and 253 transitions. [2019-05-23 11:26:25,534 INFO L146 ILogger]: Start accepts. Automaton has 239 states and 253 transitions. Word has length 150 [2019-05-23 11:26:25,535 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:25,535 INFO L146 ILogger]: Abstraction has 239 states and 253 transitions. [2019-05-23 11:26:25,535 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:26:25,535 INFO L146 ILogger]: Start isEmpty. Operand 239 states and 253 transitions. [2019-05-23 11:26:25,537 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 161 [2019-05-23 11:26:25,537 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:25,537 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:25,538 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:25,538 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:25,538 INFO L146 ILogger]: Analyzing trace with hash 1898258217, now seen corresponding path program 7 times [2019-05-23 11:26:25,538 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:25,538 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:25,539 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:25,539 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:25,539 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:25,555 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:25,935 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:25,936 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:25,936 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:25,946 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:25,981 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:25,982 INFO L146 ILogger]: Trace formula consists of 251 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:26:25,984 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:26,122 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:26:26,123 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,236 WARN L146 ILogger]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-05-23 11:26:26,237 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:26,237 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 11:26:26,238 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:26:26,489 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:26,490 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 27 treesize of output 26 [2019-05-23 11:26:26,490 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,498 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:26,499 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 11:26:26,499 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:26,506 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:26,506 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 27 treesize of output 26 [2019-05-23 11:26:26,507 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,513 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:26,514 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 11:26:26,514 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:26,524 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:26,525 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 27 treesize of output 26 [2019-05-23 11:26:26,525 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,531 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:26,532 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 11:26:26,532 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:26,539 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:26,540 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 27 treesize of output 26 [2019-05-23 11:26:26,540 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,549 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:26,550 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 11:26:26,550 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:14 [2019-05-23 11:26:26,794 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 16 treesize of output 8 [2019-05-23 11:26:26,794 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,796 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:26,796 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 11:26:26,796 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:26:26,896 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:26,915 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:26,915 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 34 [2019-05-23 11:26:26,915 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:26:26,916 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:26:26,916 INFO L146 ILogger]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:26:26,916 INFO L146 ILogger]: Start difference. First operand 239 states and 253 transitions. Second operand 34 states. [2019-05-23 11:26:28,772 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:28,772 INFO L146 ILogger]: Finished difference Result 541 states and 572 transitions. [2019-05-23 11:26:28,773 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:26:28,773 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 160 [2019-05-23 11:26:28,773 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:28,775 INFO L146 ILogger]: With dead ends: 541 [2019-05-23 11:26:28,775 INFO L146 ILogger]: Without dead ends: 539 [2019-05-23 11:26:28,777 INFO L146 ILogger]: 0 DeclaredPredicates, 223 GetRequests, 148 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=697, Invalid=4559, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:26:28,777 INFO L146 ILogger]: Start minimizeSevpa. Operand 539 states. [2019-05-23 11:26:28,791 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 539 to 295. [2019-05-23 11:26:28,791 INFO L146 ILogger]: Start removeUnreachable. Operand 295 states. [2019-05-23 11:26:28,792 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 295 states to 295 states and 314 transitions. [2019-05-23 11:26:28,792 INFO L146 ILogger]: Start accepts. Automaton has 295 states and 314 transitions. Word has length 160 [2019-05-23 11:26:28,792 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:28,793 INFO L146 ILogger]: Abstraction has 295 states and 314 transitions. [2019-05-23 11:26:28,793 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:26:28,793 INFO L146 ILogger]: Start isEmpty. Operand 295 states and 314 transitions. [2019-05-23 11:26:28,794 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 161 [2019-05-23 11:26:28,794 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:28,795 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 11:26:28,795 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:28,795 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:28,795 INFO L146 ILogger]: Analyzing trace with hash -1954728055, now seen corresponding path program 1 times [2019-05-23 11:26:28,795 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:28,795 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:28,796 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,796 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:28,796 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,810 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:29,419 INFO L146 ILogger]: Checked inductivity of 101 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:29,419 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:29,420 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:29,430 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:29,466 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:29,468 INFO L146 ILogger]: Trace formula consists of 252 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:26:29,471 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:29,573 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 16 treesize of output 12 [2019-05-23 11:26:29,573 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:29,582 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:29,583 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 11:26:29,583 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:26:29,676 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:29,677 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 26 treesize of output 25 [2019-05-23 11:26:29,677 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:29,688 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:29,689 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 11:26:29,689 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:29,695 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:29,696 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 26 treesize of output 25 [2019-05-23 11:26:29,696 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:29,709 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:29,710 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 11:26:29,710 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:29,720 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:29,720 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 26 treesize of output 25 [2019-05-23 11:26:29,721 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:29,736 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:29,736 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 11:26:29,737 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:29,743 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:29,745 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 26 treesize of output 25 [2019-05-23 11:26:29,746 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:29,758 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:29,758 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 11:26:29,759 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:16 [2019-05-23 11:26:30,024 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:30,025 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,028 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:30,028 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 11:26:30,028 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:30,171 INFO L146 ILogger]: Checked inductivity of 101 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:30,189 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:30,189 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2019-05-23 11:26:30,190 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:26:30,190 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:26:30,191 INFO L146 ILogger]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:26:30,191 INFO L146 ILogger]: Start difference. First operand 295 states and 314 transitions. Second operand 37 states. [2019-05-23 11:26:35,528 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:35,528 INFO L146 ILogger]: Finished difference Result 607 states and 637 transitions. [2019-05-23 11:26:35,529 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-05-23 11:26:35,529 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 160 [2019-05-23 11:26:35,529 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:35,531 INFO L146 ILogger]: With dead ends: 607 [2019-05-23 11:26:35,532 INFO L146 ILogger]: Without dead ends: 605 [2019-05-23 11:26:35,534 INFO L146 ILogger]: 0 DeclaredPredicates, 251 GetRequests, 146 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2929 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1514, Invalid=8992, Unknown=0, NotChecked=0, Total=10506 [2019-05-23 11:26:35,534 INFO L146 ILogger]: Start minimizeSevpa. Operand 605 states. [2019-05-23 11:26:35,550 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 605 to 179. [2019-05-23 11:26:35,550 INFO L146 ILogger]: Start removeUnreachable. Operand 179 states. [2019-05-23 11:26:35,551 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 179 states to 179 states and 188 transitions. [2019-05-23 11:26:35,551 INFO L146 ILogger]: Start accepts. Automaton has 179 states and 188 transitions. Word has length 160 [2019-05-23 11:26:35,551 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:35,551 INFO L146 ILogger]: Abstraction has 179 states and 188 transitions. [2019-05-23 11:26:35,552 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:26:35,552 INFO L146 ILogger]: Start isEmpty. Operand 179 states and 188 transitions. [2019-05-23 11:26:35,553 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 171 [2019-05-23 11:26:35,553 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:35,553 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:35,553 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:35,553 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:35,553 INFO L146 ILogger]: Analyzing trace with hash 603128828, now seen corresponding path program 8 times [2019-05-23 11:26:35,554 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:35,554 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:35,554 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,555 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:35,555 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,568 INFO L146 ILogger]: Conjunction of SSA is unsat