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/rewnifrev2_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:31,763 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:31,765 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:31,781 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:31,782 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:31,783 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:31,785 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:31,788 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:31,796 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:31,797 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:31,799 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:31,799 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:31,800 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:31,801 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:31,802 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:31,803 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:31,804 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:31,805 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:31,807 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:31,809 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:31,810 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:31,811 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:31,813 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:26:31,813 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:26:31,813 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:26:31,814 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:26:31,815 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:26:31,816 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:26:31,818 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:26:31,819 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:26:31,820 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:26:31,820 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:26:31,823 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:26:31,823 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:31,824 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:31,824 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:31,824 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:31,825 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:31,826 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:31,828 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:31,851 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:31,852 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:31,853 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:31,853 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:31,853 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:31,854 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:31,854 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:31,854 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:31,854 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:31,854 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:31,855 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:31,855 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:31,855 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:31,855 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:31,855 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:31,856 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:31,856 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:31,856 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:31,856 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:31,856 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:31,857 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:31,857 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:31,857 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:31,857 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:31,857 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:31,858 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:31,858 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:31,858 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:31,858 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:26:31,890 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:31,903 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:31,909 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:31,911 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:31,911 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:31,912 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/rewnifrev2_true-unreach-call.i [2019-05-23 11:26:31,973 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e7959ea/88fe0953dcfb4a5e945f507f7fd54783/FLAG9eb552e06 [2019-05-23 11:26:32,416 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:32,417 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/rewnifrev2_true-unreach-call.i [2019-05-23 11:26:32,423 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e7959ea/88fe0953dcfb4a5e945f507f7fd54783/FLAG9eb552e06 [2019-05-23 11:26:32,823 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e7959ea/88fe0953dcfb4a5e945f507f7fd54783 [2019-05-23 11:26:32,833 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:32,835 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:32,835 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:32,836 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:32,841 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:32,843 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:32" (1/1) ... [2019-05-23 11:26:32,846 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319e335f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:32, skipping insertion in model container [2019-05-23 11:26:32,846 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:32" (1/1) ... [2019-05-23 11:26:32,854 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:32,874 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:33,036 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:33,044 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:33,070 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:33,096 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:33,097 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33 WrapperNode [2019-05-23 11:26:33,097 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:33,101 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:33,101 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:33,101 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:33,110 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,121 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,150 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:33,151 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:33,151 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:33,152 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:33,166 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,167 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,169 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,169 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,176 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,189 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,191 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... [2019-05-23 11:26:33,194 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:33,195 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:33,195 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:33,195 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:33,196 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:26:33,388 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:33,389 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:33,389 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:33,389 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:33,389 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:33,390 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:33,809 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:33,810 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:26:33,811 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:33 BoogieIcfgContainer [2019-05-23 11:26:33,811 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:33,812 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:33,812 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:33,815 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:33,816 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:32" (1/3) ... [2019-05-23 11:26:33,816 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313b4057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:33, skipping insertion in model container [2019-05-23 11:26:33,817 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:33" (2/3) ... [2019-05-23 11:26:33,817 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313b4057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:33, skipping insertion in model container [2019-05-23 11:26:33,817 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:33" (3/3) ... [2019-05-23 11:26:33,819 INFO L146 ILogger]: Analyzing ICFG rewnifrev2_true-unreach-call.i [2019-05-23 11:26:33,829 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:33,836 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:33,853 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:33,883 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:33,883 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:33,884 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:33,884 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:33,884 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:33,884 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:33,884 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:33,884 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:33,885 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:33,901 INFO L146 ILogger]: Start isEmpty. Operand 37 states. [2019-05-23 11:26:33,907 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:26:33,908 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:33,909 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:33,911 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:33,917 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:33,917 INFO L146 ILogger]: Analyzing trace with hash 1154557750, now seen corresponding path program 1 times [2019-05-23 11:26:33,919 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:33,920 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:33,963 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:33,964 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:33,964 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,007 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:34,094 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:34,097 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:34,097 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:34,100 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:34,110 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:34,111 INFO L146 ILogger]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:34,113 INFO L146 ILogger]: Start difference. First operand 37 states. Second operand 4 states. [2019-05-23 11:26:34,263 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:34,263 INFO L146 ILogger]: Finished difference Result 72 states and 83 transitions. [2019-05-23 11:26:34,264 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:34,265 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 21 [2019-05-23 11:26:34,266 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:34,275 INFO L146 ILogger]: With dead ends: 72 [2019-05-23 11:26:34,275 INFO L146 ILogger]: Without dead ends: 43 [2019-05-23 11:26:34,279 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:34,296 INFO L146 ILogger]: Start minimizeSevpa. Operand 43 states. [2019-05-23 11:26:34,312 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 43 to 32. [2019-05-23 11:26:34,314 INFO L146 ILogger]: Start removeUnreachable. Operand 32 states. [2019-05-23 11:26:34,315 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2019-05-23 11:26:34,316 INFO L146 ILogger]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 21 [2019-05-23 11:26:34,317 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:34,317 INFO L146 ILogger]: Abstraction has 32 states and 33 transitions. [2019-05-23 11:26:34,317 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:34,317 INFO L146 ILogger]: Start isEmpty. Operand 32 states and 33 transitions. [2019-05-23 11:26:34,318 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:26:34,319 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:34,319 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] [2019-05-23 11:26:34,319 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:34,319 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:34,320 INFO L146 ILogger]: Analyzing trace with hash -1393780974, now seen corresponding path program 1 times [2019-05-23 11:26:34,320 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:34,320 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:34,321 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,322 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:34,322 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,372 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:34,742 WARN L146 ILogger]: Spent 184.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 6 [2019-05-23 11:26:34,924 WARN L146 ILogger]: Spent 125.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2019-05-23 11:26:35,241 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2019-05-23 11:26:35,390 INFO L146 ILogger]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:35,391 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:35,391 INFO L146 ILogger]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-05-23 11:26:35,392 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:26:35,393 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:26:35,393 INFO L146 ILogger]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:26:35,394 INFO L146 ILogger]: Start difference. First operand 32 states and 33 transitions. Second operand 12 states. [2019-05-23 11:26:36,052 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:36,052 INFO L146 ILogger]: Finished difference Result 47 states and 48 transitions. [2019-05-23 11:26:36,053 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:26:36,053 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 27 [2019-05-23 11:26:36,053 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:36,054 INFO L146 ILogger]: With dead ends: 47 [2019-05-23 11:26:36,054 INFO L146 ILogger]: Without dead ends: 45 [2019-05-23 11:26:36,056 INFO L146 ILogger]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:26:36,056 INFO L146 ILogger]: Start minimizeSevpa. Operand 45 states. [2019-05-23 11:26:36,061 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 45 to 38. [2019-05-23 11:26:36,061 INFO L146 ILogger]: Start removeUnreachable. Operand 38 states. [2019-05-23 11:26:36,062 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2019-05-23 11:26:36,063 INFO L146 ILogger]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 27 [2019-05-23 11:26:36,063 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:36,063 INFO L146 ILogger]: Abstraction has 38 states and 39 transitions. [2019-05-23 11:26:36,063 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:26:36,064 INFO L146 ILogger]: Start isEmpty. Operand 38 states and 39 transitions. [2019-05-23 11:26:36,064 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:26:36,065 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:36,065 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] [2019-05-23 11:26:36,065 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:36,065 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:36,066 INFO L146 ILogger]: Analyzing trace with hash 1795540869, now seen corresponding path program 1 times [2019-05-23 11:26:36,066 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:36,066 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:36,067 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:36,067 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:36,067 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:36,089 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,383 INFO L146 ILogger]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:36,384 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:36,384 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:36,401 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:36,426 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,427 INFO L146 ILogger]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:26:36,433 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:36,481 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 18 treesize of output 14 [2019-05-23 11:26:36,481 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,489 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,490 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,490 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:26:36,974 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,975 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2019-05-23 11:26:36,978 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:26:36,996 INFO L146 ILogger]: treesize reduction 11, result has 38.9 percent of original size [2019-05-23 11:26:36,997 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 11:26:36,997 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:7 [2019-05-23 11:26:37,080 INFO L146 ILogger]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:37,112 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:37,112 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 22 [2019-05-23 11:26:37,113 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:26:37,113 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:26:37,114 INFO L146 ILogger]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:26:37,114 INFO L146 ILogger]: Start difference. First operand 38 states and 39 transitions. Second operand 22 states. [2019-05-23 11:26:38,456 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:38,457 INFO L146 ILogger]: Finished difference Result 60 states and 61 transitions. [2019-05-23 11:26:38,457 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:26:38,458 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 37 [2019-05-23 11:26:38,459 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:38,460 INFO L146 ILogger]: With dead ends: 60 [2019-05-23 11:26:38,460 INFO L146 ILogger]: Without dead ends: 58 [2019-05-23 11:26:38,462 INFO L146 ILogger]: 0 DeclaredPredicates, 66 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:26:38,462 INFO L146 ILogger]: Start minimizeSevpa. Operand 58 states. [2019-05-23 11:26:38,468 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 58 to 48. [2019-05-23 11:26:38,468 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:26:38,469 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2019-05-23 11:26:38,469 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 37 [2019-05-23 11:26:38,469 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:38,470 INFO L146 ILogger]: Abstraction has 48 states and 49 transitions. [2019-05-23 11:26:38,470 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:26:38,470 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 49 transitions. [2019-05-23 11:26:38,471 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:26:38,471 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:38,471 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] [2019-05-23 11:26:38,472 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:38,472 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:38,472 INFO L146 ILogger]: Analyzing trace with hash -501267400, now seen corresponding path program 2 times [2019-05-23 11:26:38,472 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:38,472 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:38,473 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:38,474 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:38,474 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:38,490 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:38,609 INFO L146 ILogger]: Checked inductivity of 23 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:38,609 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:38,609 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:38,628 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:38,648 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:38,648 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:38,649 INFO L146 ILogger]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:26:38,652 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:38,758 INFO L146 ILogger]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:38,777 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:38,777 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-05-23 11:26:38,778 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:26:38,778 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:26:38,778 INFO L146 ILogger]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:26:38,779 INFO L146 ILogger]: Start difference. First operand 48 states and 49 transitions. Second operand 16 states. [2019-05-23 11:26:39,056 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:39,056 INFO L146 ILogger]: Finished difference Result 92 states and 94 transitions. [2019-05-23 11:26:39,058 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:26:39,058 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 47 [2019-05-23 11:26:39,059 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:39,060 INFO L146 ILogger]: With dead ends: 92 [2019-05-23 11:26:39,060 INFO L146 ILogger]: Without dead ends: 58 [2019-05-23 11:26:39,061 INFO L146 ILogger]: 0 DeclaredPredicates, 64 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:26:39,061 INFO L146 ILogger]: Start minimizeSevpa. Operand 58 states. [2019-05-23 11:26:39,066 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 58 to 54. [2019-05-23 11:26:39,067 INFO L146 ILogger]: Start removeUnreachable. Operand 54 states. [2019-05-23 11:26:39,068 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2019-05-23 11:26:39,068 INFO L146 ILogger]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 47 [2019-05-23 11:26:39,068 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:39,068 INFO L146 ILogger]: Abstraction has 54 states and 55 transitions. [2019-05-23 11:26:39,069 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:26:39,069 INFO L146 ILogger]: Start isEmpty. Operand 54 states and 55 transitions. [2019-05-23 11:26:39,070 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 54 [2019-05-23 11:26:39,070 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:39,070 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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] [2019-05-23 11:26:39,071 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:39,071 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:39,071 INFO L146 ILogger]: Analyzing trace with hash 1986550036, now seen corresponding path program 3 times [2019-05-23 11:26:39,071 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:39,072 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:39,072 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:39,073 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:39,073 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:39,102 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:39,689 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:39,690 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:39,690 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:39,700 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:39,719 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:26:39,719 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:39,721 INFO L146 ILogger]: Trace formula consists of 88 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:26:39,725 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:39,831 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 18 treesize of output 14 [2019-05-23 11:26:39,832 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,897 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:39,897 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,898 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2019-05-23 11:26:40,074 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:40,075 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 68 [2019-05-23 11:26:40,075 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:40,102 INFO L146 ILogger]: treesize reduction 39, result has 50.0 percent of original size [2019-05-23 11:26:40,103 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:40,104 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:39 [2019-05-23 11:26:40,156 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:40,179 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:40,180 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 106 [2019-05-23 11:26:40,181 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:40,218 INFO L146 ILogger]: treesize reduction 70, result has 43.1 percent of original size [2019-05-23 11:26:40,220 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:40,220 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:57, output treesize:53 [2019-05-23 11:26:41,885 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,887 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:41,888 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,890 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,892 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,893 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 20 [2019-05-23 11:26:41,894 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,903 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,903 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,904 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:61, output treesize:10 [2019-05-23 11:26:42,016 INFO L146 ILogger]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:42,047 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:42,048 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 40 [2019-05-23 11:26:42,048 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:26:42,049 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:26:42,050 INFO L146 ILogger]: CoverageRelationStatistics Valid=211, Invalid=1349, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:26:42,050 INFO L146 ILogger]: Start difference. First operand 54 states and 55 transitions. Second operand 40 states. [2019-05-23 11:26:53,815 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:53,815 INFO L146 ILogger]: Finished difference Result 96 states and 98 transitions. [2019-05-23 11:26:53,816 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:26:53,816 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 53 [2019-05-23 11:26:53,816 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:53,817 INFO L146 ILogger]: With dead ends: 96 [2019-05-23 11:26:53,817 INFO L146 ILogger]: Without dead ends: 64 [2019-05-23 11:26:53,820 INFO L146 ILogger]: 0 DeclaredPredicates, 105 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=939, Invalid=4173, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:26:53,821 INFO L146 ILogger]: Start minimizeSevpa. Operand 64 states. [2019-05-23 11:26:53,826 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 64 to 60. [2019-05-23 11:26:53,826 INFO L146 ILogger]: Start removeUnreachable. Operand 60 states. [2019-05-23 11:26:53,827 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2019-05-23 11:26:53,827 INFO L146 ILogger]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 53 [2019-05-23 11:26:53,828 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:53,828 INFO L146 ILogger]: Abstraction has 60 states and 61 transitions. [2019-05-23 11:26:53,828 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:26:53,828 INFO L146 ILogger]: Start isEmpty. Operand 60 states and 61 transitions. [2019-05-23 11:26:53,829 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:26:53,829 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:53,830 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:53,830 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:53,830 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:53,830 INFO L146 ILogger]: Analyzing trace with hash 1651333360, now seen corresponding path program 4 times [2019-05-23 11:26:53,830 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:53,831 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:53,831 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:53,832 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:53,832 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:53,858 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:54,240 INFO L146 ILogger]: Checked inductivity of 43 backedges. 14 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:26:54,241 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:54,241 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:54,252 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:54,282 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:54,282 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:54,284 INFO L146 ILogger]: Trace formula consists of 94 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:26:54,286 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:54,328 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 18 treesize of output 14 [2019-05-23 11:26:54,328 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:54,354 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:54,354 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:54,355 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2019-05-23 11:26:54,526 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:26:54,526 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-05-23 11:26:54,527 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:54,542 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:54,542 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:54,543 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2019-05-23 11:26:54,625 INFO L146 ILogger]: treesize reduction 100, result has 19.4 percent of original size [2019-05-23 11:26:54,625 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2019-05-23 11:26:54,626 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:54,636 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:54,637 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:54,637 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43 [2019-05-23 11:26:55,668 INFO L146 ILogger]: treesize reduction 52, result has 49.5 percent of original size [2019-05-23 11:26:55,668 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 67 [2019-05-23 11:26:55,672 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:26:55,704 INFO L146 ILogger]: treesize reduction 112, result has 11.8 percent of original size [2019-05-23 11:26:55,705 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:55,706 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:60, output treesize:7 [2019-05-23 11:26:55,830 INFO L146 ILogger]: Checked inductivity of 43 backedges. 15 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:26:55,848 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:55,849 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 36 [2019-05-23 11:26:55,849 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:26:55,849 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:26:55,850 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:26:55,850 INFO L146 ILogger]: Start difference. First operand 60 states and 61 transitions. Second operand 36 states. [2019-05-23 11:26:57,962 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:57,962 INFO L146 ILogger]: Finished difference Result 80 states and 81 transitions. [2019-05-23 11:26:57,962 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:26:57,963 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 59 [2019-05-23 11:26:57,963 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:57,964 INFO L146 ILogger]: With dead ends: 80 [2019-05-23 11:26:57,964 INFO L146 ILogger]: Without dead ends: 78 [2019-05-23 11:26:57,966 INFO L146 ILogger]: 0 DeclaredPredicates, 106 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=799, Invalid=3107, Unknown=0, NotChecked=0, Total=3906 [2019-05-23 11:26:57,966 INFO L146 ILogger]: Start minimizeSevpa. Operand 78 states. [2019-05-23 11:26:57,974 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 78 to 70. [2019-05-23 11:26:57,975 INFO L146 ILogger]: Start removeUnreachable. Operand 70 states. [2019-05-23 11:26:57,976 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2019-05-23 11:26:57,976 INFO L146 ILogger]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 59 [2019-05-23 11:26:57,976 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:57,976 INFO L146 ILogger]: Abstraction has 70 states and 71 transitions. [2019-05-23 11:26:57,976 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:26:57,977 INFO L146 ILogger]: Start isEmpty. Operand 70 states and 71 transitions. [2019-05-23 11:26:57,978 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:26:57,978 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:57,978 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:57,978 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:57,978 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:57,979 INFO L146 ILogger]: Analyzing trace with hash -912503837, now seen corresponding path program 5 times [2019-05-23 11:26:57,979 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:57,979 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:57,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:57,980 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:57,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:58,015 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:58,882 INFO L146 ILogger]: Checked inductivity of 69 backedges. 10 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:58,883 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:58,883 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:58,892 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:26:58,954 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:26:58,954 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:58,955 INFO L146 ILogger]: Trace formula consists of 111 conjuncts, 45 conjunts are in the unsatisfiable core [2019-05-23 11:26:58,959 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:58,989 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 18 treesize of output 14 [2019-05-23 11:26:58,990 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:58,998 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:58,999 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:58,999 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:26:59,089 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:26:59,090 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-05-23 11:26:59,090 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:59,096 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:59,097 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:59,097 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2019-05-23 11:26:59,152 INFO L146 ILogger]: treesize reduction 100, result has 19.4 percent of original size [2019-05-23 11:26:59,153 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2019-05-23 11:26:59,154 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:59,162 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:59,162 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:59,163 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43 [2019-05-23 11:26:59,339 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,340 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,341 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,342 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,343 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,344 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,348 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:59,348 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 63 [2019-05-23 11:26:59,349 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:59,361 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:59,362 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:59,362 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:60 [2019-05-23 11:26:59,431 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,432 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,434 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,437 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,438 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,439 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:59,447 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:59,447 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 68 [2019-05-23 11:26:59,448 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:59,462 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:59,462 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:59,462 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:78, output treesize:60 [2019-05-23 11:27:00,722 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:00,723 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:00,725 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:00,726 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:00,727 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:00,731 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:00,732 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:00,733 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:00,736 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:00,736 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 25 [2019-05-23 11:27:00,737 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:00,749 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:00,750 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:00,751 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:67, output treesize:7 [2019-05-23 11:27:00,945 INFO L146 ILogger]: Checked inductivity of 69 backedges. 15 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:00,964 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:00,964 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27] total 47 [2019-05-23 11:27:00,965 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:27:00,965 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:27:00,966 INFO L146 ILogger]: CoverageRelationStatistics Valid=223, Invalid=1939, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:27:00,966 INFO L146 ILogger]: Start difference. First operand 70 states and 71 transitions. Second operand 47 states. [2019-05-23 11:27:02,162 WARN L146 ILogger]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-05-23 11:27:07,213 WARN L146 ILogger]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2019-05-23 11:27:07,790 WARN L146 ILogger]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-05-23 11:27:08,678 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:08,678 INFO L146 ILogger]: Finished difference Result 150 states and 154 transitions. [2019-05-23 11:27:08,678 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2019-05-23 11:27:08,678 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 69 [2019-05-23 11:27:08,679 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:08,680 INFO L146 ILogger]: With dead ends: 150 [2019-05-23 11:27:08,680 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:27:08,684 INFO L146 ILogger]: 0 DeclaredPredicates, 169 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4385 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1820, Invalid=12700, Unknown=0, NotChecked=0, Total=14520 [2019-05-23 11:27:08,685 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:27:08,692 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 86. [2019-05-23 11:27:08,692 INFO L146 ILogger]: Start removeUnreachable. Operand 86 states. [2019-05-23 11:27:08,693 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2019-05-23 11:27:08,693 INFO L146 ILogger]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 69 [2019-05-23 11:27:08,693 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:08,694 INFO L146 ILogger]: Abstraction has 86 states and 87 transitions. [2019-05-23 11:27:08,694 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:27:08,694 INFO L146 ILogger]: Start isEmpty. Operand 86 states and 87 transitions. [2019-05-23 11:27:08,695 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:27:08,695 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:08,695 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:08,696 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:08,696 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:08,696 INFO L146 ILogger]: Analyzing trace with hash 1169756146, now seen corresponding path program 6 times [2019-05-23 11:27:08,696 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:08,696 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:08,697 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:08,697 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:08,697 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:08,726 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:09,456 WARN L146 ILogger]: Spent 173.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2019-05-23 11:27:09,870 WARN L146 ILogger]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 23 [2019-05-23 11:27:10,808 INFO L146 ILogger]: Checked inductivity of 124 backedges. 30 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:10,809 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:10,809 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:10,818 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:27:10,856 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:27:10,857 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:10,858 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 53 conjunts are in the unsatisfiable core [2019-05-23 11:27:10,862 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:10,896 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 18 treesize of output 14 [2019-05-23 11:27:10,896 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,903 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:10,904 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,904 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2019-05-23 11:27:10,979 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:27:10,980 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-05-23 11:27:10,980 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,987 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:10,987 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,988 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-05-23 11:27:11,041 INFO L146 ILogger]: treesize reduction 100, result has 19.4 percent of original size [2019-05-23 11:27:11,042 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2019-05-23 11:27:11,043 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,053 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,053 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,053 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:45 [2019-05-23 11:27:11,206 INFO L146 ILogger]: treesize reduction 171, result has 17.8 percent of original size [2019-05-23 11:27:11,207 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 63 [2019-05-23 11:27:11,208 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,219 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,220 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,220 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2019-05-23 11:27:11,297 INFO L146 ILogger]: treesize reduction 231, result has 13.5 percent of original size [2019-05-23 11:27:11,297 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 72 treesize of output 68 [2019-05-23 11:27:11,298 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,310 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,311 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,311 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:59 [2019-05-23 11:27:11,446 INFO L146 ILogger]: treesize reduction 264, result has 15.7 percent of original size [2019-05-23 11:27:11,447 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 80 [2019-05-23 11:27:11,448 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,464 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,465 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,465 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:73 [2019-05-23 11:27:12,071 WARN L146 ILogger]: Spent 506.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 27 [2019-05-23 11:27:12,071 INFO L146 ILogger]: treesize reduction 345, result has 12.2 percent of original size [2019-05-23 11:27:12,072 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 86 treesize of output 85 [2019-05-23 11:27:12,073 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:12,087 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:12,087 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:12,088 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:91, output treesize:73 [2019-05-23 11:27:14,450 INFO L146 ILogger]: treesize reduction 176, result has 32.6 percent of original size [2019-05-23 11:27:14,451 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 111 [2019-05-23 11:27:14,459 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:27:14,511 INFO L146 ILogger]: treesize reduction 297, result has 5.4 percent of original size [2019-05-23 11:27:14,512 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:14,512 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:90, output treesize:10 [2019-05-23 11:27:14,687 INFO L146 ILogger]: Checked inductivity of 124 backedges. 36 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:14,705 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:14,706 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32] total 56 [2019-05-23 11:27:14,706 INFO L146 ILogger]: Interpolant automaton has 56 states [2019-05-23 11:27:14,706 INFO L146 ILogger]: Constructing interpolant automaton starting with 56 interpolants. [2019-05-23 11:27:14,707 INFO L146 ILogger]: CoverageRelationStatistics Valid=226, Invalid=2854, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:27:14,707 INFO L146 ILogger]: Start difference. First operand 86 states and 87 transitions. Second operand 56 states. [2019-05-23 11:27:22,484 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:22,485 INFO L146 ILogger]: Finished difference Result 148 states and 150 transitions. [2019-05-23 11:27:22,486 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-05-23 11:27:22,486 INFO L146 ILogger]: Start accepts. Automaton has 56 states. Word has length 85 [2019-05-23 11:27:22,487 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:22,488 INFO L146 ILogger]: With dead ends: 148 [2019-05-23 11:27:22,488 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:27:22,491 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 55 SyntacticMatches, 8 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3671 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1486, Invalid=10504, Unknown=0, NotChecked=0, Total=11990 [2019-05-23 11:27:22,492 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:27:22,498 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 92. [2019-05-23 11:27:22,498 INFO L146 ILogger]: Start removeUnreachable. Operand 92 states. [2019-05-23 11:27:22,499 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2019-05-23 11:27:22,500 INFO L146 ILogger]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 85 [2019-05-23 11:27:22,500 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:22,500 INFO L146 ILogger]: Abstraction has 92 states and 93 transitions. [2019-05-23 11:27:22,500 INFO L146 ILogger]: Interpolant automaton has 56 states. [2019-05-23 11:27:22,500 INFO L146 ILogger]: Start isEmpty. Operand 92 states and 93 transitions. [2019-05-23 11:27:22,501 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:27:22,501 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:22,502 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2019-05-23 11:27:22,502 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:22,502 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:22,502 INFO L146 ILogger]: Analyzing trace with hash 728211406, now seen corresponding path program 7 times [2019-05-23 11:27:22,502 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:22,503 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:22,503 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:22,503 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:22,504 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:22,524 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:23,152 INFO L146 ILogger]: Checked inductivity of 149 backedges. 32 proven. 114 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:27:23,153 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:23,153 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:23,162 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:23,185 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:23,187 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 55 conjunts are in the unsatisfiable core [2019-05-23 11:27:23,191 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:23,224 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 18 treesize of output 14 [2019-05-23 11:27:23,225 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,230 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,230 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,231 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:27:23,328 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:27:23,329 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-05-23 11:27:23,329 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,335 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,336 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,336 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2019-05-23 11:27:23,401 INFO L146 ILogger]: treesize reduction 100, result has 19.4 percent of original size [2019-05-23 11:27:23,402 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2019-05-23 11:27:23,402 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,413 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,413 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,414 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43 [2019-05-23 11:27:23,568 INFO L146 ILogger]: treesize reduction 171, result has 17.8 percent of original size [2019-05-23 11:27:23,569 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 63 [2019-05-23 11:27:23,570 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,581 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,582 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,582 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:57 [2019-05-23 11:27:23,673 INFO L146 ILogger]: treesize reduction 231, result has 13.5 percent of original size [2019-05-23 11:27:23,674 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 72 treesize of output 68 [2019-05-23 11:27:23,674 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,688 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,688 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,688 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:57 [2019-05-23 11:27:23,925 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,947 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,956 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,960 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,961 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,962 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,962 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,963 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,964 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,966 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,967 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,967 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 80 [2019-05-23 11:27:23,968 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,986 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,986 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,987 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:78, output treesize:74 [2019-05-23 11:27:24,061 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,062 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,063 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,064 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,065 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,065 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,066 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,067 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,068 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,069 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:24,070 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:24,071 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 85 [2019-05-23 11:27:24,071 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:24,088 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:24,089 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:24,089 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:92, output treesize:74 [2019-05-23 11:27:25,736 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,737 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,738 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,739 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,740 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,741 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,742 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,744 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,745 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,746 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,747 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,748 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,749 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:25,750 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:25,752 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:25,753 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 30 [2019-05-23 11:27:25,754 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:25,759 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:25,760 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:25,760 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:80, output treesize:7 [2019-05-23 11:27:25,946 INFO L146 ILogger]: Checked inductivity of 149 backedges. 53 proven. 93 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:27:25,965 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:25,965 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 32] total 53 [2019-05-23 11:27:25,966 INFO L146 ILogger]: Interpolant automaton has 53 states [2019-05-23 11:27:25,966 INFO L146 ILogger]: Constructing interpolant automaton starting with 53 interpolants. [2019-05-23 11:27:25,968 INFO L146 ILogger]: CoverageRelationStatistics Valid=414, Invalid=2342, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:27:25,969 INFO L146 ILogger]: Start difference. First operand 92 states and 93 transitions. Second operand 53 states. [2019-05-23 11:27:29,276 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:29,276 INFO L146 ILogger]: Finished difference Result 112 states and 113 transitions. [2019-05-23 11:27:29,276 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-05-23 11:27:29,277 INFO L146 ILogger]: Start accepts. Automaton has 53 states. Word has length 91 [2019-05-23 11:27:29,277 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:29,278 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:27:29,278 INFO L146 ILogger]: Without dead ends: 110 [2019-05-23 11:27:29,282 INFO L146 ILogger]: 0 DeclaredPredicates, 169 GetRequests, 63 SyntacticMatches, 9 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2348 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1704, Invalid=7998, Unknown=0, NotChecked=0, Total=9702 [2019-05-23 11:27:29,283 INFO L146 ILogger]: Start minimizeSevpa. Operand 110 states. [2019-05-23 11:27:29,290 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 110 to 102. [2019-05-23 11:27:29,290 INFO L146 ILogger]: Start removeUnreachable. Operand 102 states. [2019-05-23 11:27:29,291 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2019-05-23 11:27:29,291 INFO L146 ILogger]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 91 [2019-05-23 11:27:29,291 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:29,292 INFO L146 ILogger]: Abstraction has 102 states and 103 transitions. [2019-05-23 11:27:29,292 INFO L146 ILogger]: Interpolant automaton has 53 states. [2019-05-23 11:27:29,292 INFO L146 ILogger]: Start isEmpty. Operand 102 states and 103 transitions. [2019-05-23 11:27:29,293 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 102 [2019-05-23 11:27:29,293 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:29,294 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:29,294 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:29,294 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:29,294 INFO L146 ILogger]: Analyzing trace with hash -917891775, now seen corresponding path program 8 times [2019-05-23 11:27:29,295 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:29,295 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:29,295 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:29,295 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:29,296 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:29,326 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:30,011 WARN L146 ILogger]: Spent 293.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 20 [2019-05-23 11:27:31,055 INFO L146 ILogger]: Checked inductivity of 195 backedges. 60 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:31,055 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:31,056 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 11:27:31,065 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:31,093 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:31,093 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:31,095 INFO L146 ILogger]: Trace formula consists of 157 conjuncts, 65 conjunts are in the unsatisfiable core [2019-05-23 11:27:31,098 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:31,141 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 18 treesize of output 14 [2019-05-23 11:27:31,142 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,150 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:31,151 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,151 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:27:31,243 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:27:31,244 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-05-23 11:27:31,244 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,251 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:31,251 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,251 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2019-05-23 11:27:31,313 INFO L146 ILogger]: treesize reduction 100, result has 19.4 percent of original size [2019-05-23 11:27:31,314 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2019-05-23 11:27:31,314 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,325 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:31,325 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,325 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43 [2019-05-23 11:27:31,477 INFO L146 ILogger]: treesize reduction 171, result has 17.8 percent of original size [2019-05-23 11:27:31,477 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 63 [2019-05-23 11:27:31,478 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,491 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:31,492 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,492 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:57 [2019-05-23 11:27:31,581 INFO L146 ILogger]: treesize reduction 231, result has 13.5 percent of original size [2019-05-23 11:27:31,582 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 72 treesize of output 68 [2019-05-23 11:27:31,583 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,594 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:31,594 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,595 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:57 [2019-05-23 11:27:31,785 INFO L146 ILogger]: treesize reduction 264, result has 15.7 percent of original size [2019-05-23 11:27:31,786 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 80 [2019-05-23 11:27:31,787 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,804 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:31,805 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,805 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:71 [2019-05-23 11:27:31,936 INFO L146 ILogger]: treesize reduction 345, result has 12.2 percent of original size [2019-05-23 11:27:31,936 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 86 treesize of output 85 [2019-05-23 11:27:31,937 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,951 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:31,952 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:31,952 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:89, output treesize:71 [2019-05-23 11:27:32,232 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,233 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,233 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,234 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,236 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,238 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,240 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,243 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,244 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,245 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,246 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,247 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,248 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,249 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,250 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,252 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:32,252 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 97 [2019-05-23 11:27:32,253 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:32,283 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:32,283 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:32,284 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:92, output treesize:88 [2019-05-23 11:27:32,370 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,371 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,372 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,372 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,374 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,375 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,376 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,377 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,378 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,379 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,380 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,381 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,383 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,384 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,385 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:32,386 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:32,386 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 100 treesize of output 102 [2019-05-23 11:27:32,387 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:32,408 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:32,409 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:32,409 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:106, output treesize:88 [2019-05-23 11:27:34,452 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,452 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,454 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,454 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,455 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,456 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,466 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,467 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,468 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,468 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:34,469 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,470 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,472 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,473 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,474 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,475 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,476 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:34,478 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:34,478 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 84 treesize of output 35 [2019-05-23 11:27:34,479 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:34,485 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:34,486 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:34,486 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:93, output treesize:7 [2019-05-23 11:27:34,717 INFO L146 ILogger]: Checked inductivity of 195 backedges. 53 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:34,737 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:34,737 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 37] total 64 [2019-05-23 11:27:34,738 INFO L146 ILogger]: Interpolant automaton has 64 states [2019-05-23 11:27:34,738 INFO L146 ILogger]: Constructing interpolant automaton starting with 64 interpolants. [2019-05-23 11:27:34,739 INFO L146 ILogger]: CoverageRelationStatistics Valid=415, Invalid=3617, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:27:34,740 INFO L146 ILogger]: Start difference. First operand 102 states and 103 transitions. Second operand 64 states. [2019-05-23 11:27:36,748 WARN L146 ILogger]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-05-23 11:27:36,967 WARN L146 ILogger]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2019-05-23 11:27:37,596 WARN L146 ILogger]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-05-23 11:27:37,809 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-05-23 11:27:39,443 WARN L146 ILogger]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80