java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_seq_init_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:19:36,074 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:19:36,078 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:19:36,092 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:19:36,093 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:19:36,096 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:19:36,098 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:19:36,101 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:19:36,104 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:19:36,111 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:19:36,112 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:19:36,112 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:19:36,116 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:19:36,117 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:19:36,120 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:19:36,121 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:19:36,122 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:19:36,125 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:19:36,130 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:19:36,133 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:19:36,135 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:19:36,136 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:19:36,140 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:19:36,140 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:19:36,141 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:19:36,141 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:19:36,142 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:19:36,143 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:19:36,144 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:19:36,144 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:19:36,146 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:19:36,147 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:19:36,149 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:19:36,150 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:19:36,150 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:19:36,151 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:19:36,153 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:19:36,154 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:19:36,155 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:19:36,155 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:19:36,181 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:19:36,181 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:19:36,184 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:19:36,184 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:19:36,184 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:19:36,184 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:19:36,185 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:19:36,185 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:19:36,185 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:19:36,185 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:19:36,185 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:19:36,186 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:19:36,186 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:19:36,186 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:19:36,186 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:19:36,186 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:19:36,187 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:19:36,188 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:19:36,188 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:19:36,188 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:19:36,189 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:19:36,189 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:19:36,189 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:19:36,189 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:19:36,189 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:19:36,190 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:19:36,190 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:19:36,190 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:19:36,190 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 11:19:36,226 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:19:36,242 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:19:36,248 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:19:36,249 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:19:36,250 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:19:36,250 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_seq_init_true-unreach-call_ground.i [2019-05-23 11:19:36,308 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/111b2c298/c55bdbe9cc214298995e581d4294c65b/FLAG1cddaf627 [2019-05-23 11:19:36,775 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:19:36,776 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_seq_init_true-unreach-call_ground.i [2019-05-23 11:19:36,780 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/111b2c298/c55bdbe9cc214298995e581d4294c65b/FLAG1cddaf627 [2019-05-23 11:19:37,157 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/111b2c298/c55bdbe9cc214298995e581d4294c65b [2019-05-23 11:19:37,165 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:19:37,167 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:19:37,168 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:37,168 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:19:37,171 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:19:37,172 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,175 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cdfc751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37, skipping insertion in model container [2019-05-23 11:19:37,176 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,183 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:19:37,201 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:19:37,378 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:37,383 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:19:37,414 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:37,452 INFO L146 ILogger]: Completed translation [2019-05-23 11:19:37,452 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37 WrapperNode [2019-05-23 11:19:37,453 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:37,454 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:37,455 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:19:37,455 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:19:37,467 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,479 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,506 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:37,506 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:19:37,506 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:19:37,507 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:19:37,517 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,518 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,519 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,521 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,528 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,534 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,536 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (1/1) ... [2019-05-23 11:19:37,547 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:19:37,548 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:19:37,548 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:19:37,548 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:19:37,552 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (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 11:19:37,739 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:19:37,739 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:19:37,739 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:19:37,739 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:19:37,739 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:19:37,740 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:19:38,090 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:19:38,091 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:19:38,092 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:38 BoogieIcfgContainer [2019-05-23 11:19:38,092 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:19:38,093 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:19:38,093 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:19:38,096 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:19:38,096 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:19:37" (1/3) ... [2019-05-23 11:19:38,097 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e93e673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:38, skipping insertion in model container [2019-05-23 11:19:38,097 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:37" (2/3) ... [2019-05-23 11:19:38,098 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e93e673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:38, skipping insertion in model container [2019-05-23 11:19:38,098 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:38" (3/3) ... [2019-05-23 11:19:38,100 INFO L146 ILogger]: Analyzing ICFG standard_seq_init_true-unreach-call_ground.i [2019-05-23 11:19:38,109 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:19:38,117 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:19:38,133 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:19:38,162 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:19:38,163 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:19:38,163 INFO L146 ILogger]: Hoare is true [2019-05-23 11:19:38,163 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:19:38,164 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:19:38,164 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:19:38,164 INFO L146 ILogger]: Difference is false [2019-05-23 11:19:38,164 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:19:38,164 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:19:38,179 INFO L146 ILogger]: Start isEmpty. Operand 35 states. [2019-05-23 11:19:38,185 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 20 [2019-05-23 11:19:38,185 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:38,186 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:38,189 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:38,194 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:38,194 INFO L146 ILogger]: Analyzing trace with hash -2052187592, now seen corresponding path program 1 times [2019-05-23 11:19:38,196 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:38,196 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:38,235 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:38,236 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:38,236 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:38,269 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:38,307 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 11:19:38,311 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:38,312 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:19:38,315 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:19:38,325 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:19:38,325 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:19:38,328 INFO L146 ILogger]: Start difference. First operand 35 states. Second operand 2 states. [2019-05-23 11:19:38,345 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:38,346 INFO L146 ILogger]: Finished difference Result 57 states and 63 transitions. [2019-05-23 11:19:38,346 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:19:38,347 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 19 [2019-05-23 11:19:38,348 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:38,359 INFO L146 ILogger]: With dead ends: 57 [2019-05-23 11:19:38,360 INFO L146 ILogger]: Without dead ends: 29 [2019-05-23 11:19:38,363 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:19:38,381 INFO L146 ILogger]: Start minimizeSevpa. Operand 29 states. [2019-05-23 11:19:38,395 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-05-23 11:19:38,396 INFO L146 ILogger]: Start removeUnreachable. Operand 29 states. [2019-05-23 11:19:38,397 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-05-23 11:19:38,399 INFO L146 ILogger]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 19 [2019-05-23 11:19:38,399 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:38,399 INFO L146 ILogger]: Abstraction has 29 states and 30 transitions. [2019-05-23 11:19:38,399 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:19:38,400 INFO L146 ILogger]: Start isEmpty. Operand 29 states and 30 transitions. [2019-05-23 11:19:38,400 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 20 [2019-05-23 11:19:38,401 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:38,401 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:38,401 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:38,402 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:38,402 INFO L146 ILogger]: Analyzing trace with hash -561478608, now seen corresponding path program 1 times [2019-05-23 11:19:38,402 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:38,402 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:38,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:38,404 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:38,404 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:38,419 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:38,472 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 11:19:38,473 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:38,473 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:19:38,475 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:19:38,475 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:19:38,476 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:38,476 INFO L146 ILogger]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2019-05-23 11:19:38,542 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:38,543 INFO L146 ILogger]: Finished difference Result 50 states and 52 transitions. [2019-05-23 11:19:38,543 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:19:38,543 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 19 [2019-05-23 11:19:38,543 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:38,544 INFO L146 ILogger]: With dead ends: 50 [2019-05-23 11:19:38,544 INFO L146 ILogger]: Without dead ends: 34 [2019-05-23 11:19:38,545 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:38,546 INFO L146 ILogger]: Start minimizeSevpa. Operand 34 states. [2019-05-23 11:19:38,550 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-05-23 11:19:38,550 INFO L146 ILogger]: Start removeUnreachable. Operand 30 states. [2019-05-23 11:19:38,551 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-05-23 11:19:38,551 INFO L146 ILogger]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 19 [2019-05-23 11:19:38,552 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:38,552 INFO L146 ILogger]: Abstraction has 30 states and 31 transitions. [2019-05-23 11:19:38,552 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:19:38,552 INFO L146 ILogger]: Start isEmpty. Operand 30 states and 31 transitions. [2019-05-23 11:19:38,553 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:19:38,553 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:38,553 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] [2019-05-23 11:19:38,554 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:38,554 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:38,554 INFO L146 ILogger]: Analyzing trace with hash 262035495, now seen corresponding path program 1 times [2019-05-23 11:19:38,554 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:38,554 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:38,555 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:38,555 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:38,556 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:38,576 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:38,663 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:38,663 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:38,663 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 11:19:38,684 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:38,721 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:38,722 INFO L146 ILogger]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:19:38,729 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:38,762 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:38,783 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:38,783 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:19:38,783 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:19:38,784 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:19:38,785 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:19:38,785 INFO L146 ILogger]: Start difference. First operand 30 states and 31 transitions. Second operand 5 states. [2019-05-23 11:19:38,971 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:38,973 INFO L146 ILogger]: Finished difference Result 55 states and 57 transitions. [2019-05-23 11:19:38,975 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:19:38,975 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 24 [2019-05-23 11:19:38,976 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:38,976 INFO L146 ILogger]: With dead ends: 55 [2019-05-23 11:19:38,977 INFO L146 ILogger]: Without dead ends: 39 [2019-05-23 11:19:38,979 INFO L146 ILogger]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:19:38,979 INFO L146 ILogger]: Start minimizeSevpa. Operand 39 states. [2019-05-23 11:19:38,987 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 39 to 35. [2019-05-23 11:19:38,987 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:19:38,989 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2019-05-23 11:19:38,989 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2019-05-23 11:19:38,989 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:38,989 INFO L146 ILogger]: Abstraction has 35 states and 36 transitions. [2019-05-23 11:19:38,990 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:19:38,992 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 36 transitions. [2019-05-23 11:19:38,992 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:19:38,993 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:38,994 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] [2019-05-23 11:19:38,994 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:38,995 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:38,995 INFO L146 ILogger]: Analyzing trace with hash -139368816, now seen corresponding path program 2 times [2019-05-23 11:19:38,996 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:38,996 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:38,997 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:38,997 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:38,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:39,033 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:39,156 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:39,156 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:39,156 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 11:19:39,176 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:39,206 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:39,206 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:39,207 INFO L146 ILogger]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:19:39,209 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:39,272 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:39,298 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:39,299 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:19:39,299 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:19:39,299 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:19:39,303 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:19:39,303 INFO L146 ILogger]: Start difference. First operand 35 states and 36 transitions. Second operand 6 states. [2019-05-23 11:19:39,370 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:39,370 INFO L146 ILogger]: Finished difference Result 60 states and 62 transitions. [2019-05-23 11:19:39,371 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:19:39,371 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 29 [2019-05-23 11:19:39,371 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:39,372 INFO L146 ILogger]: With dead ends: 60 [2019-05-23 11:19:39,372 INFO L146 ILogger]: Without dead ends: 44 [2019-05-23 11:19:39,373 INFO L146 ILogger]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:19:39,373 INFO L146 ILogger]: Start minimizeSevpa. Operand 44 states. [2019-05-23 11:19:39,377 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 44 to 40. [2019-05-23 11:19:39,377 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:19:39,378 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2019-05-23 11:19:39,378 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 29 [2019-05-23 11:19:39,379 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:39,379 INFO L146 ILogger]: Abstraction has 40 states and 41 transitions. [2019-05-23 11:19:39,379 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:19:39,379 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 41 transitions. [2019-05-23 11:19:39,380 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:19:39,380 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:39,380 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:39,381 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:39,381 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:39,381 INFO L146 ILogger]: Analyzing trace with hash -1165758009, now seen corresponding path program 3 times [2019-05-23 11:19:39,381 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:39,381 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:39,382 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:39,382 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:39,382 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:39,397 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:39,471 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:39,472 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:39,472 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 11:19:39,491 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:39,518 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:19:39,518 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:39,519 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:19:39,523 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:39,547 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:39,575 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:39,575 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:19:39,576 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:19:39,576 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:19:39,577 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:39,577 INFO L146 ILogger]: Start difference. First operand 40 states and 41 transitions. Second operand 7 states. [2019-05-23 11:19:39,726 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:39,728 INFO L146 ILogger]: Finished difference Result 65 states and 67 transitions. [2019-05-23 11:19:39,728 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:19:39,728 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 34 [2019-05-23 11:19:39,729 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:39,729 INFO L146 ILogger]: With dead ends: 65 [2019-05-23 11:19:39,729 INFO L146 ILogger]: Without dead ends: 49 [2019-05-23 11:19:39,730 INFO L146 ILogger]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:39,730 INFO L146 ILogger]: Start minimizeSevpa. Operand 49 states. [2019-05-23 11:19:39,734 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-05-23 11:19:39,734 INFO L146 ILogger]: Start removeUnreachable. Operand 45 states. [2019-05-23 11:19:39,735 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2019-05-23 11:19:39,735 INFO L146 ILogger]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 34 [2019-05-23 11:19:39,736 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:39,736 INFO L146 ILogger]: Abstraction has 45 states and 46 transitions. [2019-05-23 11:19:39,736 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:19:39,736 INFO L146 ILogger]: Start isEmpty. Operand 45 states and 46 transitions. [2019-05-23 11:19:39,737 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:19:39,737 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:39,738 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:39,738 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:39,738 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:39,738 INFO L146 ILogger]: Analyzing trace with hash 2053820656, now seen corresponding path program 4 times [2019-05-23 11:19:39,739 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:39,739 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:39,740 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:39,740 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:39,740 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:39,755 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:39,855 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:39,856 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:39,856 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 11:19:39,876 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:39,900 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:39,900 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:39,901 INFO L146 ILogger]: Trace formula consists of 52 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:19:39,903 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:39,948 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-05-23 11:19:39,948 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:39,969 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:39,970 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:39,971 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-05-23 11:19:40,306 WARN L146 ILogger]: Spent 288.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2019-05-23 11:19:40,307 INFO L146 ILogger]: treesize reduction 54, result has 46.0 percent of original size [2019-05-23 11:19:40,308 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 37 treesize of output 65 [2019-05-23 11:19:40,309 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:40,466 WARN L146 ILogger]: Spent 156.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2019-05-23 11:19:40,467 INFO L146 ILogger]: treesize reduction 26, result has 58.1 percent of original size [2019-05-23 11:19:40,468 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:40,468 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:33 [2019-05-23 11:19:40,784 WARN L146 ILogger]: Spent 181.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2019-05-23 11:19:40,785 INFO L146 ILogger]: treesize reduction 10, result has 88.2 percent of original size [2019-05-23 11:19:40,786 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 40 treesize of output 96 [2019-05-23 11:19:40,790 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:40,913 WARN L146 ILogger]: Spent 122.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2019-05-23 11:19:40,914 INFO L146 ILogger]: treesize reduction 58, result has 36.3 percent of original size [2019-05-23 11:19:40,915 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:40,915 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:20 [2019-05-23 11:19:41,070 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2019-05-23 11:19:41,070 INFO L146 ILogger]: treesize reduction 10, result has 88.2 percent of original size [2019-05-23 11:19:41,071 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 40 treesize of output 96 [2019-05-23 11:19:41,074 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:41,110 INFO L146 ILogger]: treesize reduction 58, result has 36.3 percent of original size [2019-05-23 11:19:41,111 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:41,112 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:20 [2019-05-23 11:19:41,274 INFO L146 ILogger]: treesize reduction 10, result has 88.2 percent of original size [2019-05-23 11:19:41,275 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 40 treesize of output 96 [2019-05-23 11:19:41,278 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:41,333 INFO L146 ILogger]: treesize reduction 58, result has 36.3 percent of original size [2019-05-23 11:19:41,334 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 11:19:41,334 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:17 [2019-05-23 11:19:41,440 INFO L146 ILogger]: treesize reduction 9, result has 10.0 percent of original size [2019-05-23 11:19:41,440 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 33 treesize of output 13 [2019-05-23 11:19:41,441 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:41,447 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:41,447 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 11:19:41,447 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:7 [2019-05-23 11:19:41,507 INFO L146 ILogger]: Checked inductivity of 34 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:41,531 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:41,532 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15] total 19 [2019-05-23 11:19:41,532 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:19:41,533 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:19:41,533 INFO L146 ILogger]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:19:41,533 INFO L146 ILogger]: Start difference. First operand 45 states and 46 transitions. Second operand 19 states. [2019-05-23 11:19:42,549 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:42,549 INFO L146 ILogger]: Finished difference Result 87 states and 90 transitions. [2019-05-23 11:19:42,555 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:19:42,555 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 39 [2019-05-23 11:19:42,555 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:42,556 INFO L146 ILogger]: With dead ends: 87 [2019-05-23 11:19:42,556 INFO L146 ILogger]: Without dead ends: 71 [2019-05-23 11:19:42,557 INFO L146 ILogger]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:19:42,558 INFO L146 ILogger]: Start minimizeSevpa. Operand 71 states. [2019-05-23 11:19:42,563 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 71 to 57. [2019-05-23 11:19:42,564 INFO L146 ILogger]: Start removeUnreachable. Operand 57 states. [2019-05-23 11:19:42,565 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2019-05-23 11:19:42,565 INFO L146 ILogger]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 39 [2019-05-23 11:19:42,566 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:42,566 INFO L146 ILogger]: Abstraction has 57 states and 58 transitions. [2019-05-23 11:19:42,566 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:19:42,566 INFO L146 ILogger]: Start isEmpty. Operand 57 states and 58 transitions. [2019-05-23 11:19:42,567 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 57 [2019-05-23 11:19:42,567 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:42,567 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:42,567 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:42,567 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:42,567 INFO L146 ILogger]: Analyzing trace with hash 89353263, now seen corresponding path program 1 times [2019-05-23 11:19:42,567 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:42,567 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:42,569 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:42,569 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:42,569 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:42,591 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:42,694 INFO L146 ILogger]: Checked inductivity of 62 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:42,695 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:42,695 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 11:19:42,707 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:42,737 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:42,738 INFO L146 ILogger]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:19:42,741 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:42,847 INFO L146 ILogger]: Checked inductivity of 62 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:42,877 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:42,877 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:19:42,878 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:19:42,878 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:19:42,879 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:42,879 INFO L146 ILogger]: Start difference. First operand 57 states and 58 transitions. Second operand 9 states. [2019-05-23 11:19:42,961 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:42,961 INFO L146 ILogger]: Finished difference Result 89 states and 91 transitions. [2019-05-23 11:19:42,964 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:19:42,964 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 56 [2019-05-23 11:19:42,964 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:42,965 INFO L146 ILogger]: With dead ends: 89 [2019-05-23 11:19:42,965 INFO L146 ILogger]: Without dead ends: 66 [2019-05-23 11:19:42,966 INFO L146 ILogger]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:42,966 INFO L146 ILogger]: Start minimizeSevpa. Operand 66 states. [2019-05-23 11:19:42,972 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 66 to 62. [2019-05-23 11:19:42,972 INFO L146 ILogger]: Start removeUnreachable. Operand 62 states. [2019-05-23 11:19:42,973 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2019-05-23 11:19:42,973 INFO L146 ILogger]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 56 [2019-05-23 11:19:42,973 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:42,973 INFO L146 ILogger]: Abstraction has 62 states and 63 transitions. [2019-05-23 11:19:42,974 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:19:42,974 INFO L146 ILogger]: Start isEmpty. Operand 62 states and 63 transitions. [2019-05-23 11:19:42,975 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 62 [2019-05-23 11:19:42,975 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:42,975 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:42,975 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:42,975 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:42,976 INFO L146 ILogger]: Analyzing trace with hash 1261082264, now seen corresponding path program 2 times [2019-05-23 11:19:42,976 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:42,976 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:42,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:42,977 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:42,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:42,993 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:43,096 INFO L146 ILogger]: Checked inductivity of 88 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:43,097 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:43,097 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 11:19:43,109 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:43,129 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:43,129 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:43,130 INFO L146 ILogger]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:19:43,131 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:43,156 INFO L146 ILogger]: Checked inductivity of 88 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:43,174 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:43,175 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:19:43,175 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:19:43,175 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:19:43,176 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:19:43,176 INFO L146 ILogger]: Start difference. First operand 62 states and 63 transitions. Second operand 10 states. [2019-05-23 11:19:43,249 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:43,249 INFO L146 ILogger]: Finished difference Result 94 states and 96 transitions. [2019-05-23 11:19:43,250 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:19:43,250 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 61 [2019-05-23 11:19:43,250 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:43,251 INFO L146 ILogger]: With dead ends: 94 [2019-05-23 11:19:43,251 INFO L146 ILogger]: Without dead ends: 71 [2019-05-23 11:19:43,252 INFO L146 ILogger]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:19:43,252 INFO L146 ILogger]: Start minimizeSevpa. Operand 71 states. [2019-05-23 11:19:43,257 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 71 to 67. [2019-05-23 11:19:43,258 INFO L146 ILogger]: Start removeUnreachable. Operand 67 states. [2019-05-23 11:19:43,258 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2019-05-23 11:19:43,258 INFO L146 ILogger]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 61 [2019-05-23 11:19:43,259 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:43,259 INFO L146 ILogger]: Abstraction has 67 states and 68 transitions. [2019-05-23 11:19:43,259 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:19:43,259 INFO L146 ILogger]: Start isEmpty. Operand 67 states and 68 transitions. [2019-05-23 11:19:43,260 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:19:43,260 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:43,261 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:43,261 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:43,261 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:43,261 INFO L146 ILogger]: Analyzing trace with hash 1919583695, now seen corresponding path program 3 times [2019-05-23 11:19:43,261 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:43,261 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:43,262 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:43,263 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:43,263 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:43,278 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:43,401 INFO L146 ILogger]: Checked inductivity of 119 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:43,401 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:43,401 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 11:19:43,410 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:43,539 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:19:43,539 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:43,541 INFO L146 ILogger]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:19:43,549 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:43,653 INFO L146 ILogger]: Checked inductivity of 119 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:43,672 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:43,672 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:19:43,672 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:19:43,673 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:19:43,673 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:19:43,673 INFO L146 ILogger]: Start difference. First operand 67 states and 68 transitions. Second operand 11 states. [2019-05-23 11:19:43,751 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:43,752 INFO L146 ILogger]: Finished difference Result 99 states and 101 transitions. [2019-05-23 11:19:43,752 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:19:43,752 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 66 [2019-05-23 11:19:43,753 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:43,754 INFO L146 ILogger]: With dead ends: 99 [2019-05-23 11:19:43,754 INFO L146 ILogger]: Without dead ends: 76 [2019-05-23 11:19:43,755 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:19:43,755 INFO L146 ILogger]: Start minimizeSevpa. Operand 76 states. [2019-05-23 11:19:43,760 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 76 to 72. [2019-05-23 11:19:43,761 INFO L146 ILogger]: Start removeUnreachable. Operand 72 states. [2019-05-23 11:19:43,761 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2019-05-23 11:19:43,762 INFO L146 ILogger]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 66 [2019-05-23 11:19:43,762 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:43,762 INFO L146 ILogger]: Abstraction has 72 states and 73 transitions. [2019-05-23 11:19:43,762 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:19:43,762 INFO L146 ILogger]: Start isEmpty. Operand 72 states and 73 transitions. [2019-05-23 11:19:43,763 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:19:43,763 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:43,764 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:43,764 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:43,764 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:43,764 INFO L146 ILogger]: Analyzing trace with hash 782401784, now seen corresponding path program 4 times [2019-05-23 11:19:43,764 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:43,765 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:43,765 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:43,766 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:43,766 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:43,781 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:43,881 INFO L146 ILogger]: Checked inductivity of 155 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:43,881 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:43,881 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 11:19:43,893 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:43,913 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:43,913 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:43,914 INFO L146 ILogger]: Trace formula consists of 93 conjuncts, 39 conjunts are in the unsatisfiable core [2019-05-23 11:19:43,918 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:43,937 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 17 treesize of output 13 [2019-05-23 11:19:43,937 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:43,948 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:43,949 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:43,949 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:3 [2019-05-23 11:19:44,002 INFO L146 ILogger]: treesize reduction 42, result has 22.2 percent of original size [2019-05-23 11:19:44,003 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 11:19:44,003 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,011 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:44,011 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,012 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:26 [2019-05-23 11:19:44,125 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:44,126 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 35 treesize of output 101 [2019-05-23 11:19:44,130 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,227 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:44,227 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,228 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:44,313 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:44,314 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 35 treesize of output 101 [2019-05-23 11:19:44,318 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,341 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:44,343 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,343 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:44,440 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:44,441 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 35 treesize of output 101 [2019-05-23 11:19:44,443 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,516 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:44,517 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,517 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:44,649 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:44,650 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 35 treesize of output 101 [2019-05-23 11:19:44,652 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,710 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:44,711 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,711 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:44,835 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:44,835 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 35 treesize of output 101 [2019-05-23 11:19:44,838 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,873 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:44,874 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:44,875 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:45,167 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:45,168 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 35 treesize of output 101 [2019-05-23 11:19:45,172 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:45,235 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:45,236 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 11:19:45,236 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:17 [2019-05-23 11:19:45,435 INFO L146 ILogger]: treesize reduction 11, result has 8.3 percent of original size [2019-05-23 11:19:45,435 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 36 treesize of output 12 [2019-05-23 11:19:45,436 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:45,438 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:45,438 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 11:19:45,438 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:5 [2019-05-23 11:19:45,618 INFO L146 ILogger]: Checked inductivity of 155 backedges. 42 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:45,638 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:45,638 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22] total 30 [2019-05-23 11:19:45,639 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:19:45,639 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:19:45,640 INFO L146 ILogger]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:19:45,640 INFO L146 ILogger]: Start difference. First operand 72 states and 73 transitions. Second operand 30 states. [2019-05-23 11:19:47,193 WARN L146 ILogger]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-05-23 11:19:47,307 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:47,308 INFO L146 ILogger]: Finished difference Result 126 states and 129 transitions. [2019-05-23 11:19:47,308 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:19:47,309 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 71 [2019-05-23 11:19:47,309 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:47,310 INFO L146 ILogger]: With dead ends: 126 [2019-05-23 11:19:47,310 INFO L146 ILogger]: Without dead ends: 103 [2019-05-23 11:19:47,311 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=411, Invalid=2139, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:19:47,312 INFO L146 ILogger]: Start minimizeSevpa. Operand 103 states. [2019-05-23 11:19:47,319 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 103 to 89. [2019-05-23 11:19:47,319 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:19:47,320 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2019-05-23 11:19:47,320 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 71 [2019-05-23 11:19:47,323 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:47,323 INFO L146 ILogger]: Abstraction has 89 states and 90 transitions. [2019-05-23 11:19:47,323 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:19:47,323 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 90 transitions. [2019-05-23 11:19:47,325 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:19:47,325 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:47,325 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:47,325 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:47,325 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:47,326 INFO L146 ILogger]: Analyzing trace with hash -1406815177, now seen corresponding path program 5 times [2019-05-23 11:19:47,328 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:47,328 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:47,329 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:47,330 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:47,330 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:47,366 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:47,509 INFO L146 ILogger]: Checked inductivity of 215 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:47,510 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:47,510 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:47,525 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:47,589 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:19:47,590 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:47,591 INFO L146 ILogger]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:19:47,594 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:47,620 INFO L146 ILogger]: Checked inductivity of 215 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:47,642 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:47,642 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:19:47,643 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:19:47,643 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:19:47,643 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:47,643 INFO L146 ILogger]: Start difference. First operand 89 states and 90 transitions. Second operand 13 states. [2019-05-23 11:19:47,744 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:47,744 INFO L146 ILogger]: Finished difference Result 133 states and 135 transitions. [2019-05-23 11:19:47,744 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:19:47,745 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 88 [2019-05-23 11:19:47,745 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:47,746 INFO L146 ILogger]: With dead ends: 133 [2019-05-23 11:19:47,746 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:19:47,746 INFO L146 ILogger]: 0 DeclaredPredicates, 99 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:47,747 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:19:47,752 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 94. [2019-05-23 11:19:47,752 INFO L146 ILogger]: Start removeUnreachable. Operand 94 states. [2019-05-23 11:19:47,753 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2019-05-23 11:19:47,753 INFO L146 ILogger]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 88 [2019-05-23 11:19:47,754 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:47,754 INFO L146 ILogger]: Abstraction has 94 states and 95 transitions. [2019-05-23 11:19:47,754 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:19:47,754 INFO L146 ILogger]: Start isEmpty. Operand 94 states and 95 transitions. [2019-05-23 11:19:47,755 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:19:47,755 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:47,755 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:47,756 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:47,756 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:47,756 INFO L146 ILogger]: Analyzing trace with hash -665781600, now seen corresponding path program 6 times [2019-05-23 11:19:47,756 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:47,756 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:47,757 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:47,757 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:47,757 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:47,772 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:47,934 INFO L146 ILogger]: Checked inductivity of 261 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:47,935 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:47,935 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:47,949 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:48,047 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:19:48,047 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:48,049 INFO L146 ILogger]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:19:48,052 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:48,183 INFO L146 ILogger]: Checked inductivity of 261 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:48,206 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:48,206 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:19:48,207 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:19:48,207 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:19:48,208 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:19:48,208 INFO L146 ILogger]: Start difference. First operand 94 states and 95 transitions. Second operand 14 states. [2019-05-23 11:19:48,298 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:48,299 INFO L146 ILogger]: Finished difference Result 138 states and 140 transitions. [2019-05-23 11:19:48,299 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:19:48,299 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 93 [2019-05-23 11:19:48,300 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:48,301 INFO L146 ILogger]: With dead ends: 138 [2019-05-23 11:19:48,301 INFO L146 ILogger]: Without dead ends: 103 [2019-05-23 11:19:48,302 INFO L146 ILogger]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:19:48,302 INFO L146 ILogger]: Start minimizeSevpa. Operand 103 states. [2019-05-23 11:19:48,307 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 103 to 99. [2019-05-23 11:19:48,307 INFO L146 ILogger]: Start removeUnreachable. Operand 99 states. [2019-05-23 11:19:48,308 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2019-05-23 11:19:48,308 INFO L146 ILogger]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 93 [2019-05-23 11:19:48,309 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:48,309 INFO L146 ILogger]: Abstraction has 99 states and 100 transitions. [2019-05-23 11:19:48,309 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:19:48,309 INFO L146 ILogger]: Start isEmpty. Operand 99 states and 100 transitions. [2019-05-23 11:19:48,310 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:19:48,310 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:48,310 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:48,310 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:48,311 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:48,311 INFO L146 ILogger]: Analyzing trace with hash -1251062313, now seen corresponding path program 7 times [2019-05-23 11:19:48,311 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:48,311 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:48,312 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:48,312 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:48,312 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:48,326 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:48,950 INFO L146 ILogger]: Checked inductivity of 312 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:48,951 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:48,951 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:48,959 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:48,985 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:48,986 INFO L146 ILogger]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:19:48,988 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:49,009 INFO L146 ILogger]: Checked inductivity of 312 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:49,036 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:49,036 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:19:49,036 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:19:49,037 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:19:49,037 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:19:49,037 INFO L146 ILogger]: Start difference. First operand 99 states and 100 transitions. Second operand 15 states. [2019-05-23 11:19:49,156 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:49,156 INFO L146 ILogger]: Finished difference Result 143 states and 145 transitions. [2019-05-23 11:19:49,156 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:19:49,156 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 98 [2019-05-23 11:19:49,157 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:49,158 INFO L146 ILogger]: With dead ends: 143 [2019-05-23 11:19:49,158 INFO L146 ILogger]: Without dead ends: 108 [2019-05-23 11:19:49,158 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:19:49,159 INFO L146 ILogger]: Start minimizeSevpa. Operand 108 states. [2019-05-23 11:19:49,164 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 108 to 104. [2019-05-23 11:19:49,165 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:19:49,165 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2019-05-23 11:19:49,165 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 98 [2019-05-23 11:19:49,166 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:49,166 INFO L146 ILogger]: Abstraction has 104 states and 105 transitions. [2019-05-23 11:19:49,166 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:19:49,166 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 105 transitions. [2019-05-23 11:19:49,167 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:19:49,167 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:49,167 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:49,168 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:49,168 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:49,168 INFO L146 ILogger]: Analyzing trace with hash -2105056000, now seen corresponding path program 8 times [2019-05-23 11:19:49,168 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:49,168 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:49,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:49,169 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:49,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:49,183 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:50,017 INFO L146 ILogger]: Checked inductivity of 368 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:50,018 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:50,018 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:50,026 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:50,049 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:50,049 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:50,050 INFO L146 ILogger]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:19:50,052 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:50,070 INFO L146 ILogger]: Checked inductivity of 368 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:50,089 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:50,090 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:19:50,090 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:19:50,090 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:19:50,091 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:19:50,091 INFO L146 ILogger]: Start difference. First operand 104 states and 105 transitions. Second operand 16 states. [2019-05-23 11:19:50,192 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:50,192 INFO L146 ILogger]: Finished difference Result 148 states and 150 transitions. [2019-05-23 11:19:50,192 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:19:50,193 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 103 [2019-05-23 11:19:50,193 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:50,194 INFO L146 ILogger]: With dead ends: 148 [2019-05-23 11:19:50,194 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:19:50,194 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:19:50,195 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:19:50,198 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 109. [2019-05-23 11:19:50,199 INFO L146 ILogger]: Start removeUnreachable. Operand 109 states. [2019-05-23 11:19:50,199 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2019-05-23 11:19:50,199 INFO L146 ILogger]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 103 [2019-05-23 11:19:50,200 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:50,200 INFO L146 ILogger]: Abstraction has 109 states and 110 transitions. [2019-05-23 11:19:50,200 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:19:50,200 INFO L146 ILogger]: Start isEmpty. Operand 109 states and 110 transitions. [2019-05-23 11:19:50,201 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 109 [2019-05-23 11:19:50,202 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:50,202 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:50,202 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:50,202 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:50,203 INFO L146 ILogger]: Analyzing trace with hash -2105843849, now seen corresponding path program 9 times [2019-05-23 11:19:50,203 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:50,203 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:50,204 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:50,204 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:50,204 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:50,218 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:50,433 INFO L146 ILogger]: Checked inductivity of 429 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:50,433 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:50,433 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:50,441 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:50,577 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2019-05-23 11:19:50,577 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:50,579 INFO L146 ILogger]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:19:50,580 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:50,599 INFO L146 ILogger]: Checked inductivity of 429 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:50,628 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:50,628 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:19:50,629 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:19:50,629 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:19:50,629 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:19:50,629 INFO L146 ILogger]: Start difference. First operand 109 states and 110 transitions. Second operand 17 states. [2019-05-23 11:19:50,760 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:50,760 INFO L146 ILogger]: Finished difference Result 153 states and 155 transitions. [2019-05-23 11:19:50,760 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:19:50,761 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 108 [2019-05-23 11:19:50,761 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:50,762 INFO L146 ILogger]: With dead ends: 153 [2019-05-23 11:19:50,762 INFO L146 ILogger]: Without dead ends: 118 [2019-05-23 11:19:50,763 INFO L146 ILogger]: 0 DeclaredPredicates, 123 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:19:50,763 INFO L146 ILogger]: Start minimizeSevpa. Operand 118 states. [2019-05-23 11:19:50,767 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 118 to 114. [2019-05-23 11:19:50,767 INFO L146 ILogger]: Start removeUnreachable. Operand 114 states. [2019-05-23 11:19:50,768 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2019-05-23 11:19:50,768 INFO L146 ILogger]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 108 [2019-05-23 11:19:50,768 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:50,768 INFO L146 ILogger]: Abstraction has 114 states and 115 transitions. [2019-05-23 11:19:50,768 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:19:50,769 INFO L146 ILogger]: Start isEmpty. Operand 114 states and 115 transitions. [2019-05-23 11:19:50,769 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:19:50,770 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:50,770 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:50,770 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:50,770 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:50,770 INFO L146 ILogger]: Analyzing trace with hash -385591456, now seen corresponding path program 10 times [2019-05-23 11:19:50,770 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:50,771 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:50,771 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:50,771 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:50,772 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:50,784 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:51,076 INFO L146 ILogger]: Checked inductivity of 495 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:51,077 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:51,077 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:51,085 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:51,123 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:51,123 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:51,125 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 55 conjunts are in the unsatisfiable core [2019-05-23 11:19:51,127 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:51,169 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 17 treesize of output 13 [2019-05-23 11:19:51,170 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,177 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:51,178 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,178 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:3 [2019-05-23 11:19:51,219 INFO L146 ILogger]: treesize reduction 42, result has 22.2 percent of original size [2019-05-23 11:19:51,219 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 11:19:51,220 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,226 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:51,227 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,227 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:26 [2019-05-23 11:19:51,300 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:51,300 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 35 treesize of output 101 [2019-05-23 11:19:51,303 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,324 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:51,325 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,325 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:51,393 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:51,394 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 35 treesize of output 101 [2019-05-23 11:19:51,397 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,420 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:51,420 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,421 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:51,495 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:51,496 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 35 treesize of output 101 [2019-05-23 11:19:51,499 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,554 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:51,554 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,555 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:51,638 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:51,639 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 35 treesize of output 101 [2019-05-23 11:19:51,642 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,668 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:51,669 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,669 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:51,745 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:51,745 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 35 treesize of output 101 [2019-05-23 11:19:51,747 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,769 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:51,770 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,770 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:51,847 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:51,847 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 35 treesize of output 101 [2019-05-23 11:19:51,849 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,874 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:51,875 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,875 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:51,984 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:51,984 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 35 treesize of output 101 [2019-05-23 11:19:51,987 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,008 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:52,009 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,009 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:52,102 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:52,103 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 35 treesize of output 101 [2019-05-23 11:19:52,105 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,130 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:52,130 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,130 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:52,220 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:52,221 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 35 treesize of output 101 [2019-05-23 11:19:52,224 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,257 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:52,257 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,257 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:52,356 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:52,357 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 35 treesize of output 101 [2019-05-23 11:19:52,359 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,382 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:52,382 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,383 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:19:52,469 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:19:52,469 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 35 treesize of output 101 [2019-05-23 11:19:52,471 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,503 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:19:52,504 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 11:19:52,504 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:17 [2019-05-23 11:19:52,796 INFO L146 ILogger]: treesize reduction 11, result has 8.3 percent of original size [2019-05-23 11:19:52,797 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 36 treesize of output 12 [2019-05-23 11:19:52,797 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,799 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:52,799 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 11:19:52,799 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:5 [2019-05-23 11:19:52,918 INFO L146 ILogger]: Checked inductivity of 495 backedges. 207 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:52,936 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:52,937 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 30] total 44 [2019-05-23 11:19:52,937 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:19:52,937 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:19:52,938 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=1567, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:19:52,938 INFO L146 ILogger]: Start difference. First operand 114 states and 115 transitions. Second operand 44 states. [2019-05-23 11:19:55,708 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:55,709 INFO L146 ILogger]: Finished difference Result 180 states and 183 transitions. [2019-05-23 11:19:55,709 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:19:55,709 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 113 [2019-05-23 11:19:55,709 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:55,710 INFO L146 ILogger]: With dead ends: 180 [2019-05-23 11:19:55,710 INFO L146 ILogger]: Without dead ends: 145 [2019-05-23 11:19:55,713 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=825, Invalid=4577, Unknown=0, NotChecked=0, Total=5402 [2019-05-23 11:19:55,713 INFO L146 ILogger]: Start minimizeSevpa. Operand 145 states. [2019-05-23 11:19:55,717 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 145 to 131. [2019-05-23 11:19:55,717 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:19:55,717 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2019-05-23 11:19:55,718 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 113 [2019-05-23 11:19:55,718 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:55,718 INFO L146 ILogger]: Abstraction has 131 states and 132 transitions. [2019-05-23 11:19:55,718 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:19:55,718 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 132 transitions. [2019-05-23 11:19:55,719 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:19:55,719 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:55,719 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:55,719 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:55,720 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:55,720 INFO L146 ILogger]: Analyzing trace with hash -1855895073, now seen corresponding path program 11 times [2019-05-23 11:19:55,720 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:55,720 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:55,721 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:55,721 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:55,721 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:55,738 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:55,976 INFO L146 ILogger]: Checked inductivity of 597 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:19:55,976 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:55,976 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:55,986 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:56,167 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2019-05-23 11:19:56,168 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:56,170 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:19:56,171 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:56,215 INFO L146 ILogger]: Checked inductivity of 597 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:19:56,248 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:56,248 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:19:56,249 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:19:56,249 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:19:56,250 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:19:56,250 INFO L146 ILogger]: Start difference. First operand 131 states and 132 transitions. Second operand 19 states. [2019-05-23 11:19:56,396 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:56,396 INFO L146 ILogger]: Finished difference Result 187 states and 189 transitions. [2019-05-23 11:19:56,397 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:19:56,397 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 130 [2019-05-23 11:19:56,397 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:56,398 INFO L146 ILogger]: With dead ends: 187 [2019-05-23 11:19:56,398 INFO L146 ILogger]: Without dead ends: 140 [2019-05-23 11:19:56,399 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:19:56,399 INFO L146 ILogger]: Start minimizeSevpa. Operand 140 states. [2019-05-23 11:19:56,403 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 140 to 136. [2019-05-23 11:19:56,403 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:19:56,404 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2019-05-23 11:19:56,404 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 130 [2019-05-23 11:19:56,404 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:56,404 INFO L146 ILogger]: Abstraction has 136 states and 137 transitions. [2019-05-23 11:19:56,404 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:19:56,404 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 137 transitions. [2019-05-23 11:19:56,405 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 136 [2019-05-23 11:19:56,405 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:56,405 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:56,405 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:56,405 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:56,405 INFO L146 ILogger]: Analyzing trace with hash 1139506440, now seen corresponding path program 12 times [2019-05-23 11:19:56,405 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:56,405 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:56,406 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:56,406 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:56,406 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:56,422 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:56,671 INFO L146 ILogger]: Checked inductivity of 673 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:19:56,672 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:56,672 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:56,683 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:56,913 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2019-05-23 11:19:56,913 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:56,916 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 68 conjunts are in the unsatisfiable core [2019-05-23 11:19:56,918 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:56,975 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 17 treesize of output 13 [2019-05-23 11:19:56,975 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:56,980 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:56,980 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:56,981 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:7 [2019-05-23 11:19:57,008 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,009 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2019-05-23 11:19:57,009 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,018 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,018 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,018 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:29 [2019-05-23 11:19:57,052 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,053 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,054 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,055 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,056 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2019-05-23 11:19:57,056 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,064 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,065 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,065 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:24 [2019-05-23 11:19:57,084 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,085 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,086 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,087 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,087 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2019-05-23 11:19:57,088 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,099 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,100 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,100 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:24 [2019-05-23 11:19:57,131 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,132 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,133 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,135 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,135 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2019-05-23 11:19:57,136 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,153 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,153 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,153 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:24 [2019-05-23 11:19:57,180 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,181 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,182 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,183 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,184 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2019-05-23 11:19:57,185 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,200 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,201 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,201 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:24 [2019-05-23 11:19:57,246 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,247 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,249 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,250 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,251 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2019-05-23 11:19:57,252 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,262 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,263 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,263 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:24 [2019-05-23 11:19:57,296 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,298 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,301 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,302 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,302 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2019-05-23 11:19:57,302 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,311 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,311 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 11:19:57,312 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:21 [2019-05-23 11:19:57,357 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,379 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,379 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 3 case distinctions, treesize of input 35 treesize of output 101 [2019-05-23 11:19:57,381 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,413 INFO L146 ILogger]: treesize reduction 44, result has 54.6 percent of original size [2019-05-23 11:19:57,414 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,414 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:40 [2019-05-23 11:19:57,488 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,530 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,530 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 38 treesize of output 104 [2019-05-23 11:19:57,533 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,541 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 24 treesize of output 20 [2019-05-23 11:19:57,541 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,587 INFO L146 ILogger]: treesize reduction 63, result has 46.6 percent of original size [2019-05-23 11:19:57,588 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-05-23 11:19:57,588 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:29 [2019-05-23 11:19:57,658 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 24 treesize of output 20 [2019-05-23 11:19:57,658 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,664 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:57,694 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:57,695 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 38 treesize of output 104 [2019-05-23 11:19:57,697 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:57,755 INFO L146 ILogger]: treesize reduction 63, result has 46.6 percent of original size [2019-05-23 11:19:57,756 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-05-23 11:19:57,756 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:29 [2019-05-23 11:19:58,015 WARN L146 ILogger]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-05-23 11:19:58,087 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 24 treesize of output 20 [2019-05-23 11:19:58,088 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:58,141 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:58,308 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:58,308 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 38 treesize of output 104 [2019-05-23 11:19:58,310 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:58,356 INFO L146 ILogger]: treesize reduction 63, result has 46.6 percent of original size [2019-05-23 11:19:58,357 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-05-23 11:19:58,357 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:29 [2019-05-23 11:19:58,415 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:58,452 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:58,453 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 38 treesize of output 104 [2019-05-23 11:19:58,455 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:58,528 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 24 treesize of output 20 [2019-05-23 11:19:58,529 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:58,843 WARN L146 ILogger]: Spent 313.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2019-05-23 11:19:58,843 INFO L146 ILogger]: treesize reduction 63, result has 46.6 percent of original size [2019-05-23 11:19:58,844 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-05-23 11:19:58,845 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:29 [2019-05-23 11:19:58,978 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:59,042 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:59,043 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 38 treesize of output 104 [2019-05-23 11:19:59,045 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:59,048 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 24 treesize of output 20 [2019-05-23 11:19:59,049 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:59,100 INFO L146 ILogger]: treesize reduction 63, result has 46.6 percent of original size [2019-05-23 11:19:59,100 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-05-23 11:19:59,101 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:29 [2019-05-23 11:19:59,772 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:59,773 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2019-05-23 11:19:59,773 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:59,775 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:59,775 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:59,776 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2019-05-23 11:20:00,040 INFO L146 ILogger]: Checked inductivity of 673 backedges. 24 proven. 649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:00,060 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:00,060 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 36] total 53 [2019-05-23 11:20:00,061 INFO L146 ILogger]: Interpolant automaton has 53 states [2019-05-23 11:20:00,061 INFO L146 ILogger]: Constructing interpolant automaton starting with 53 interpolants. [2019-05-23 11:20:00,062 INFO L146 ILogger]: CoverageRelationStatistics Valid=592, Invalid=2164, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:20:00,062 INFO L146 ILogger]: Start difference. First operand 136 states and 137 transitions. Second operand 53 states. [2019-05-23 11:20:01,333 WARN L146 ILogger]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-05-23 11:20:02,994 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:02,994 INFO L146 ILogger]: Finished difference Result 214 states and 217 transitions. [2019-05-23 11:20:02,994 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-05-23 11:20:02,994 INFO L146 ILogger]: Start accepts. Automaton has 53 states. Word has length 135 [2019-05-23 11:20:02,995 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:02,995 INFO L146 ILogger]: With dead ends: 214 [2019-05-23 11:20:02,995 INFO L146 ILogger]: Without dead ends: 167 [2019-05-23 11:20:02,997 INFO L146 ILogger]: 0 DeclaredPredicates, 185 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2247 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1260, Invalid=5880, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:20:02,998 INFO L146 ILogger]: Start minimizeSevpa. Operand 167 states. [2019-05-23 11:20:03,001 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 167 to 153. [2019-05-23 11:20:03,002 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:20:03,002 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2019-05-23 11:20:03,002 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 135 [2019-05-23 11:20:03,003 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:03,003 INFO L146 ILogger]: Abstraction has 153 states and 154 transitions. [2019-05-23 11:20:03,003 INFO L146 ILogger]: Interpolant automaton has 53 states. [2019-05-23 11:20:03,003 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 154 transitions. [2019-05-23 11:20:03,004 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:20:03,004 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:03,004 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:03,004 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:03,004 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:03,005 INFO L146 ILogger]: Analyzing trace with hash 426369095, now seen corresponding path program 13 times [2019-05-23 11:20:03,005 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:03,005 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:03,005 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:03,006 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:03,006 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:03,020 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:03,316 INFO L146 ILogger]: Checked inductivity of 797 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:20:03,317 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:03,317 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:03,326 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:03,357 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:03,358 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:20:03,361 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:03,391 INFO L146 ILogger]: Checked inductivity of 797 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:20:03,410 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:03,410 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:20:03,411 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:20:03,411 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:20:03,411 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:03,411 INFO L146 ILogger]: Start difference. First operand 153 states and 154 transitions. Second operand 21 states. [2019-05-23 11:20:03,669 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:03,670 INFO L146 ILogger]: Finished difference Result 221 states and 223 transitions. [2019-05-23 11:20:03,670 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:20:03,670 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 152 [2019-05-23 11:20:03,670 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:03,671 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:20:03,671 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:20:03,672 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:03,672 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:20:03,676 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 158. [2019-05-23 11:20:03,676 INFO L146 ILogger]: Start removeUnreachable. Operand 158 states. [2019-05-23 11:20:03,677 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2019-05-23 11:20:03,677 INFO L146 ILogger]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 152 [2019-05-23 11:20:03,677 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:03,677 INFO L146 ILogger]: Abstraction has 158 states and 159 transitions. [2019-05-23 11:20:03,677 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:20:03,677 INFO L146 ILogger]: Start isEmpty. Operand 158 states and 159 transitions. [2019-05-23 11:20:03,678 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:20:03,678 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:03,678 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:03,678 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:03,679 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:03,679 INFO L146 ILogger]: Analyzing trace with hash -1410507088, now seen corresponding path program 14 times [2019-05-23 11:20:03,679 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:03,679 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:03,680 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:03,680 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:03,680 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:03,693 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:04,013 INFO L146 ILogger]: Checked inductivity of 883 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:20:04,013 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:04,013 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:04,022 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:04,061 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:04,061 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:04,062 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:20:04,064 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:04,099 INFO L146 ILogger]: Checked inductivity of 883 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:20:04,118 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:04,118 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:20:04,118 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:20:04,118 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:20:04,119 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:04,119 INFO L146 ILogger]: Start difference. First operand 158 states and 159 transitions. Second operand 22 states. [2019-05-23 11:20:04,263 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:04,263 INFO L146 ILogger]: Finished difference Result 226 states and 228 transitions. [2019-05-23 11:20:04,263 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:20:04,264 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 157 [2019-05-23 11:20:04,264 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:04,265 INFO L146 ILogger]: With dead ends: 226 [2019-05-23 11:20:04,265 INFO L146 ILogger]: Without dead ends: 167 [2019-05-23 11:20:04,266 INFO L146 ILogger]: 0 DeclaredPredicates, 177 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:04,266 INFO L146 ILogger]: Start minimizeSevpa. Operand 167 states. [2019-05-23 11:20:04,271 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 167 to 163. [2019-05-23 11:20:04,271 INFO L146 ILogger]: Start removeUnreachable. Operand 163 states. [2019-05-23 11:20:04,271 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2019-05-23 11:20:04,272 INFO L146 ILogger]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 157 [2019-05-23 11:20:04,272 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:04,272 INFO L146 ILogger]: Abstraction has 163 states and 164 transitions. [2019-05-23 11:20:04,272 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:20:04,272 INFO L146 ILogger]: Start isEmpty. Operand 163 states and 164 transitions. [2019-05-23 11:20:04,273 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:20:04,273 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:04,273 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:04,274 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:04,274 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:04,274 INFO L146 ILogger]: Analyzing trace with hash -384468505, now seen corresponding path program 15 times [2019-05-23 11:20:04,274 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:04,274 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:04,275 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:04,275 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:04,275 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:04,289 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:04,525 INFO L146 ILogger]: Checked inductivity of 974 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:20:04,525 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:04,525 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:04,536 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:05,195 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2019-05-23 11:20:05,195 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:05,198 INFO L146 ILogger]: Trace formula consists of 243 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:20:05,200 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:05,236 INFO L146 ILogger]: Checked inductivity of 974 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:20:05,255 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:05,256 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:20:05,256 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:20:05,256 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:20:05,256 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:05,257 INFO L146 ILogger]: Start difference. First operand 163 states and 164 transitions. Second operand 23 states. [2019-05-23 11:20:05,454 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:05,454 INFO L146 ILogger]: Finished difference Result 231 states and 233 transitions. [2019-05-23 11:20:05,455 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:20:05,455 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 162 [2019-05-23 11:20:05,455 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:05,456 INFO L146 ILogger]: With dead ends: 231 [2019-05-23 11:20:05,456 INFO L146 ILogger]: Without dead ends: 172 [2019-05-23 11:20:05,456 INFO L146 ILogger]: 0 DeclaredPredicates, 183 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:05,457 INFO L146 ILogger]: Start minimizeSevpa. Operand 172 states. [2019-05-23 11:20:05,461 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 172 to 168. [2019-05-23 11:20:05,461 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:20:05,461 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2019-05-23 11:20:05,462 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 162 [2019-05-23 11:20:05,462 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:05,462 INFO L146 ILogger]: Abstraction has 168 states and 169 transitions. [2019-05-23 11:20:05,462 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:20:05,462 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 169 transitions. [2019-05-23 11:20:05,463 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:20:05,463 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:05,463 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:05,463 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:05,464 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:05,464 INFO L146 ILogger]: Analyzing trace with hash 362858768, now seen corresponding path program 16 times [2019-05-23 11:20:05,464 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:05,464 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:05,465 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:05,465 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:05,465 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:05,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:05,729 INFO L146 ILogger]: Checked inductivity of 1070 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:20:05,730 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:05,730 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:05,738 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:05,779 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:05,779 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:05,781 INFO L146 ILogger]: Trace formula consists of 216 conjuncts, 75 conjunts are in the unsatisfiable core [2019-05-23 11:20:05,784 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:05,832 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 17 treesize of output 13 [2019-05-23 11:20:05,832 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:05,837 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:05,837 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:05,838 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:3 [2019-05-23 11:20:05,864 INFO L146 ILogger]: treesize reduction 42, result has 22.2 percent of original size [2019-05-23 11:20:05,864 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 11:20:05,865 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:05,872 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:05,873 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:05,873 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:26 [2019-05-23 11:20:05,953 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:05,954 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 35 treesize of output 101 [2019-05-23 11:20:05,956 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:05,979 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:05,980 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:05,980 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:06,055 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:06,055 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 35 treesize of output 101 [2019-05-23 11:20:06,058 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,082 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:06,083 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,083 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:06,154 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:06,154 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 35 treesize of output 101 [2019-05-23 11:20:06,157 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,183 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:06,184 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,184 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:06,316 WARN L146 ILogger]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2019-05-23 11:20:06,317 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:06,317 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 35 treesize of output 101 [2019-05-23 11:20:06,320 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,348 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:06,349 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,349 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:06,444 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:06,444 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 35 treesize of output 101 [2019-05-23 11:20:06,446 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,469 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:06,469 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,469 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:06,554 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:06,554 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 35 treesize of output 101 [2019-05-23 11:20:06,556 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,578 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:06,579 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,579 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:06,695 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:06,695 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 35 treesize of output 101 [2019-05-23 11:20:06,696 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,741 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:06,742 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,742 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:06,824 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:06,825 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 35 treesize of output 101 [2019-05-23 11:20:06,827 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,853 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:06,854 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,854 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:06,945 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:06,945 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 35 treesize of output 101 [2019-05-23 11:20:06,947 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,977 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:06,977 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:06,978 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:07,100 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:07,101 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 35 treesize of output 101 [2019-05-23 11:20:07,103 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,126 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:07,127 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,127 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:07,224 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:07,224 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 35 treesize of output 101 [2019-05-23 11:20:07,226 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,250 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:07,250 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,250 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:07,338 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:07,339 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 35 treesize of output 101 [2019-05-23 11:20:07,341 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,408 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:07,409 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,409 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:07,518 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:07,519 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 35 treesize of output 101 [2019-05-23 11:20:07,521 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,543 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:07,543 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,544 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:07,632 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:07,632 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 35 treesize of output 101 [2019-05-23 11:20:07,634 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,656 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:07,657 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,657 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:07,808 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:07,808 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 35 treesize of output 101 [2019-05-23 11:20:07,810 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:07,840 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:07,841 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 11:20:07,841 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:17 [2019-05-23 11:20:08,553 INFO L146 ILogger]: treesize reduction 11, result has 8.3 percent of original size [2019-05-23 11:20:08,553 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 36 treesize of output 12 [2019-05-23 11:20:08,554 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:08,558 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:08,558 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 11:20:08,558 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:5 [2019-05-23 11:20:08,734 INFO L146 ILogger]: Checked inductivity of 1070 backedges. 429 proven. 641 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:08,753 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:08,753 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 40] total 60 [2019-05-23 11:20:08,754 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:20:08,754 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:20:08,755 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=2965, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:20:08,755 INFO L146 ILogger]: Start difference. First operand 168 states and 169 transitions. Second operand 60 states. [2019-05-23 11:20:12,370 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:12,371 INFO L146 ILogger]: Finished difference Result 258 states and 261 transitions. [2019-05-23 11:20:12,380 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:20:12,380 INFO L146 ILogger]: Start accepts. Automaton has 60 states. Word has length 167 [2019-05-23 11:20:12,380 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:12,381 INFO L146 ILogger]: With dead ends: 258 [2019-05-23 11:20:12,382 INFO L146 ILogger]: Without dead ends: 199 [2019-05-23 11:20:12,385 INFO L146 ILogger]: 0 DeclaredPredicates, 229 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2618 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1387, Invalid=8513, Unknown=0, NotChecked=0, Total=9900 [2019-05-23 11:20:12,385 INFO L146 ILogger]: Start minimizeSevpa. Operand 199 states. [2019-05-23 11:20:12,390 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 199 to 185. [2019-05-23 11:20:12,391 INFO L146 ILogger]: Start removeUnreachable. Operand 185 states. [2019-05-23 11:20:12,391 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2019-05-23 11:20:12,391 INFO L146 ILogger]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 167 [2019-05-23 11:20:12,392 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:12,392 INFO L146 ILogger]: Abstraction has 185 states and 186 transitions. [2019-05-23 11:20:12,392 INFO L146 ILogger]: Interpolant automaton has 60 states. [2019-05-23 11:20:12,392 INFO L146 ILogger]: Start isEmpty. Operand 185 states and 186 transitions. [2019-05-23 11:20:12,393 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:20:12,393 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:12,393 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:12,393 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:12,394 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:12,394 INFO L146 ILogger]: Analyzing trace with hash -92289969, now seen corresponding path program 17 times [2019-05-23 11:20:12,394 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:12,394 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:12,395 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:12,395 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:12,395 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:12,412 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:12,821 INFO L146 ILogger]: Checked inductivity of 1226 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:12,821 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:12,821 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:12,829 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:13,307 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2019-05-23 11:20:13,307 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,311 INFO L146 ILogger]: Trace formula consists of 275 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:20:13,314 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:13,366 INFO L146 ILogger]: Checked inductivity of 1226 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:13,389 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:13,389 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:20:13,390 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:20:13,390 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:20:13,391 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:13,391 INFO L146 ILogger]: Start difference. First operand 185 states and 186 transitions. Second operand 25 states. [2019-05-23 11:20:13,544 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:13,544 INFO L146 ILogger]: Finished difference Result 265 states and 267 transitions. [2019-05-23 11:20:13,546 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:20:13,546 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 184 [2019-05-23 11:20:13,546 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:13,547 INFO L146 ILogger]: With dead ends: 265 [2019-05-23 11:20:13,547 INFO L146 ILogger]: Without dead ends: 194 [2019-05-23 11:20:13,547 INFO L146 ILogger]: 0 DeclaredPredicates, 207 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:13,548 INFO L146 ILogger]: Start minimizeSevpa. Operand 194 states. [2019-05-23 11:20:13,552 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 194 to 190. [2019-05-23 11:20:13,552 INFO L146 ILogger]: Start removeUnreachable. Operand 190 states. [2019-05-23 11:20:13,553 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2019-05-23 11:20:13,553 INFO L146 ILogger]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 184 [2019-05-23 11:20:13,553 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:13,553 INFO L146 ILogger]: Abstraction has 190 states and 191 transitions. [2019-05-23 11:20:13,553 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:20:13,553 INFO L146 ILogger]: Start isEmpty. Operand 190 states and 191 transitions. [2019-05-23 11:20:13,554 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 190 [2019-05-23 11:20:13,554 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:13,554 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:13,555 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:13,555 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:13,555 INFO L146 ILogger]: Analyzing trace with hash -1928896840, now seen corresponding path program 18 times [2019-05-23 11:20:13,555 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:13,555 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:13,556 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,556 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:13,556 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,571 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,919 INFO L146 ILogger]: Checked inductivity of 1332 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:13,919 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:13,919 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:13,927 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:14,650 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2019-05-23 11:20:14,651 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,654 INFO L146 ILogger]: Trace formula consists of 282 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:20:14,656 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:14,705 INFO L146 ILogger]: Checked inductivity of 1332 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:14,737 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:14,737 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:20:14,738 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:20:14,738 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:20:14,738 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:14,739 INFO L146 ILogger]: Start difference. First operand 190 states and 191 transitions. Second operand 26 states. [2019-05-23 11:20:15,494 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,494 INFO L146 ILogger]: Finished difference Result 270 states and 272 transitions. [2019-05-23 11:20:15,495 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:20:15,495 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 189 [2019-05-23 11:20:15,495 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,496 INFO L146 ILogger]: With dead ends: 270 [2019-05-23 11:20:15,496 INFO L146 ILogger]: Without dead ends: 199 [2019-05-23 11:20:15,496 INFO L146 ILogger]: 0 DeclaredPredicates, 213 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:15,497 INFO L146 ILogger]: Start minimizeSevpa. Operand 199 states. [2019-05-23 11:20:15,502 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 199 to 195. [2019-05-23 11:20:15,503 INFO L146 ILogger]: Start removeUnreachable. Operand 195 states. [2019-05-23 11:20:15,503 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2019-05-23 11:20:15,504 INFO L146 ILogger]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 189 [2019-05-23 11:20:15,504 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,504 INFO L146 ILogger]: Abstraction has 195 states and 196 transitions. [2019-05-23 11:20:15,504 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:20:15,504 INFO L146 ILogger]: Start isEmpty. Operand 195 states and 196 transitions. [2019-05-23 11:20:15,505 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:20:15,505 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,505 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:15,506 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,506 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,506 INFO L146 ILogger]: Analyzing trace with hash -195240465, now seen corresponding path program 19 times [2019-05-23 11:20:15,506 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,506 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,507 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,507 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:15,507 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,523 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,891 INFO L146 ILogger]: Checked inductivity of 1443 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:15,892 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:15,892 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:15,901 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,950 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,951 INFO L146 ILogger]: Trace formula consists of 289 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:20:15,962 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:16,100 INFO L146 ILogger]: Checked inductivity of 1443 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:16,130 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:16,130 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:20:16,131 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:20:16,131 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:20:16,131 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:16,131 INFO L146 ILogger]: Start difference. First operand 195 states and 196 transitions. Second operand 27 states. [2019-05-23 11:20:17,117 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:17,117 INFO L146 ILogger]: Finished difference Result 275 states and 277 transitions. [2019-05-23 11:20:17,118 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:20:17,118 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 194 [2019-05-23 11:20:17,118 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:17,119 INFO L146 ILogger]: With dead ends: 275 [2019-05-23 11:20:17,120 INFO L146 ILogger]: Without dead ends: 204 [2019-05-23 11:20:17,120 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:17,120 INFO L146 ILogger]: Start minimizeSevpa. Operand 204 states. [2019-05-23 11:20:17,126 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 204 to 200. [2019-05-23 11:20:17,126 INFO L146 ILogger]: Start removeUnreachable. Operand 200 states. [2019-05-23 11:20:17,126 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2019-05-23 11:20:17,127 INFO L146 ILogger]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 194 [2019-05-23 11:20:17,127 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:17,127 INFO L146 ILogger]: Abstraction has 200 states and 201 transitions. [2019-05-23 11:20:17,127 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:20:17,127 INFO L146 ILogger]: Start isEmpty. Operand 200 states and 201 transitions. [2019-05-23 11:20:17,128 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 200 [2019-05-23 11:20:17,128 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:17,129 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:17,129 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:17,129 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:17,129 INFO L146 ILogger]: Analyzing trace with hash -277264104, now seen corresponding path program 20 times [2019-05-23 11:20:17,129 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:17,130 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:17,130 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,130 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:17,130 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,149 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,536 INFO L146 ILogger]: Checked inductivity of 1559 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:17,536 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,536 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:17,545 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:17,596 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:17,596 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,598 INFO L146 ILogger]: Trace formula consists of 296 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,600 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,664 INFO L146 ILogger]: Checked inductivity of 1559 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:17,684 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,684 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-05-23 11:20:17,684 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:20:17,684 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:20:17,685 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:20:17,685 INFO L146 ILogger]: Start difference. First operand 200 states and 201 transitions. Second operand 28 states. [2019-05-23 11:20:17,867 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:17,867 INFO L146 ILogger]: Finished difference Result 280 states and 282 transitions. [2019-05-23 11:20:17,868 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:20:17,868 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 199 [2019-05-23 11:20:17,868 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:17,869 INFO L146 ILogger]: With dead ends: 280 [2019-05-23 11:20:17,869 INFO L146 ILogger]: Without dead ends: 209 [2019-05-23 11:20:17,869 INFO L146 ILogger]: 0 DeclaredPredicates, 225 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:20:17,870 INFO L146 ILogger]: Start minimizeSevpa. Operand 209 states. [2019-05-23 11:20:17,876 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 209 to 205. [2019-05-23 11:20:17,876 INFO L146 ILogger]: Start removeUnreachable. Operand 205 states. [2019-05-23 11:20:17,877 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2019-05-23 11:20:17,877 INFO L146 ILogger]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 199 [2019-05-23 11:20:17,877 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:17,878 INFO L146 ILogger]: Abstraction has 205 states and 206 transitions. [2019-05-23 11:20:17,878 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:20:17,878 INFO L146 ILogger]: Start isEmpty. Operand 205 states and 206 transitions. [2019-05-23 11:20:17,879 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 205 [2019-05-23 11:20:17,879 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:17,879 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:17,879 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:17,879 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:17,880 INFO L146 ILogger]: Analyzing trace with hash 1650356111, now seen corresponding path program 21 times [2019-05-23 11:20:17,880 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:17,880 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:17,881 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,881 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:17,881 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,898 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,812 INFO L146 ILogger]: Checked inductivity of 1680 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:18,812 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:18,812 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:18,821 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:20,646 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2019-05-23 11:20:20,646 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,652 INFO L146 ILogger]: Trace formula consists of 303 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,654 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,725 INFO L146 ILogger]: Checked inductivity of 1680 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:20,747 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,747 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:20:20,748 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:20:20,748 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:20:20,748 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:20,749 INFO L146 ILogger]: Start difference. First operand 205 states and 206 transitions. Second operand 29 states. [2019-05-23 11:20:21,026 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:21,026 INFO L146 ILogger]: Finished difference Result 285 states and 287 transitions. [2019-05-23 11:20:21,026 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:20:21,027 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 204 [2019-05-23 11:20:21,027 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:21,028 INFO L146 ILogger]: With dead ends: 285 [2019-05-23 11:20:21,028 INFO L146 ILogger]: Without dead ends: 214 [2019-05-23 11:20:21,028 INFO L146 ILogger]: 0 DeclaredPredicates, 231 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:21,029 INFO L146 ILogger]: Start minimizeSevpa. Operand 214 states. [2019-05-23 11:20:21,035 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 214 to 210. [2019-05-23 11:20:21,035 INFO L146 ILogger]: Start removeUnreachable. Operand 210 states. [2019-05-23 11:20:21,035 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2019-05-23 11:20:21,035 INFO L146 ILogger]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 204 [2019-05-23 11:20:21,036 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:21,036 INFO L146 ILogger]: Abstraction has 210 states and 211 transitions. [2019-05-23 11:20:21,036 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:20:21,036 INFO L146 ILogger]: Start isEmpty. Operand 210 states and 211 transitions. [2019-05-23 11:20:21,036 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 210 [2019-05-23 11:20:21,036 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:21,037 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:21,037 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:21,037 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:21,037 INFO L146 ILogger]: Analyzing trace with hash -1714308232, now seen corresponding path program 22 times [2019-05-23 11:20:21,037 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:21,037 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:21,038 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,038 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:21,038 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,053 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,497 INFO L146 ILogger]: Checked inductivity of 1806 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:21,497 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,497 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:21,507 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:21,575 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:21,575 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,578 INFO L146 ILogger]: Trace formula consists of 269 conjuncts, 91 conjunts are in the unsatisfiable core [2019-05-23 11:20:21,582 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:21,627 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 17 treesize of output 13 [2019-05-23 11:20:21,627 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,631 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:21,632 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,632 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:3 [2019-05-23 11:20:21,664 INFO L146 ILogger]: treesize reduction 42, result has 22.2 percent of original size [2019-05-23 11:20:21,664 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 11:20:21,665 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,680 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:21,680 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,681 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:26 [2019-05-23 11:20:21,763 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:21,763 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 35 treesize of output 101 [2019-05-23 11:20:21,765 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,786 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:21,786 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,786 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:21,859 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:21,859 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 35 treesize of output 101 [2019-05-23 11:20:21,861 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,885 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:21,885 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,886 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:21,967 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:21,968 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 35 treesize of output 101 [2019-05-23 11:20:21,969 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,998 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:21,998 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,998 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:22,106 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:22,106 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 35 treesize of output 101 [2019-05-23 11:20:22,108 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,136 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:22,136 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,136 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:22,229 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:22,230 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 35 treesize of output 101 [2019-05-23 11:20:22,231 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,255 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:22,255 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,256 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:22,337 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:22,338 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 35 treesize of output 101 [2019-05-23 11:20:22,340 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,404 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:22,405 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,405 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:22,488 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:22,489 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 35 treesize of output 101 [2019-05-23 11:20:22,491 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,512 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:22,513 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,513 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:22,599 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:22,599 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 35 treesize of output 101 [2019-05-23 11:20:22,601 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,623 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:22,624 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,624 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:22,715 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:22,716 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 35 treesize of output 101 [2019-05-23 11:20:22,717 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,751 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:22,751 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,752 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:22,839 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:22,840 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 35 treesize of output 101 [2019-05-23 11:20:22,842 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,904 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:22,904 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:22,905 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:22,999 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:23,000 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 35 treesize of output 101 [2019-05-23 11:20:23,002 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,025 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:23,025 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,026 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:23,118 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:23,118 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 35 treesize of output 101 [2019-05-23 11:20:23,120 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,149 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:23,150 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,150 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:23,247 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:23,248 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 35 treesize of output 101 [2019-05-23 11:20:23,249 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,271 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:23,272 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,272 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:23,367 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:23,367 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 35 treesize of output 101 [2019-05-23 11:20:23,369 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,391 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:23,392 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,392 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:23,490 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:23,491 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 35 treesize of output 101 [2019-05-23 11:20:23,493 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,519 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:23,520 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,520 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:23,729 WARN L146 ILogger]: Spent 163.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2019-05-23 11:20:23,729 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:23,730 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 35 treesize of output 101 [2019-05-23 11:20:23,731 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,752 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:23,753 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,753 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:23,901 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:23,902 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 35 treesize of output 101 [2019-05-23 11:20:23,904 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,927 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:23,928 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:23,928 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:24,027 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:24,027 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 35 treesize of output 101 [2019-05-23 11:20:24,029 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:24,052 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:24,052 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:24,053 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:24,157 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:24,158 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 35 treesize of output 101 [2019-05-23 11:20:24,159 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:24,181 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:24,181 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:24,182 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:21 [2019-05-23 11:20:24,283 INFO L146 ILogger]: treesize reduction 12, result has 87.4 percent of original size [2019-05-23 11:20:24,283 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 35 treesize of output 101 [2019-05-23 11:20:24,285 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:24,307 INFO L146 ILogger]: treesize reduction 63, result has 35.1 percent of original size [2019-05-23 11:20:24,308 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 11:20:24,308 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:17 [2019-05-23 11:20:24,993 INFO L146 ILogger]: treesize reduction 11, result has 8.3 percent of original size [2019-05-23 11:20:24,994 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 36 treesize of output 12 [2019-05-23 11:20:24,994 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:24,995 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:24,995 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 11:20:24,995 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:5 [2019-05-23 11:20:25,229 INFO L146 ILogger]: Checked inductivity of 1806 backedges. 819 proven. 987 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:25,249 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:25,249 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 48] total 74 [2019-05-23 11:20:25,249 INFO L146 ILogger]: Interpolant automaton has 74 states [2019-05-23 11:20:25,250 INFO L146 ILogger]: Constructing interpolant automaton starting with 74 interpolants. [2019-05-23 11:20:25,251 INFO L146 ILogger]: CoverageRelationStatistics Valid=892, Invalid=4510, Unknown=0, NotChecked=0, Total=5402 [2019-05-23 11:20:25,251 INFO L146 ILogger]: Start difference. First operand 210 states and 211 transitions. Second operand 74 states. [2019-05-23 11:20:30,500 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:30,500 INFO L146 ILogger]: Finished difference Result 312 states and 315 transitions. [2019-05-23 11:20:30,504 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:20:30,504 INFO L146 ILogger]: Start accepts. Automaton has 74 states. Word has length 209 [2019-05-23 11:20:30,504 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:30,505 INFO L146 ILogger]: With dead ends: 312 [2019-05-23 11:20:30,505 INFO L146 ILogger]: Without dead ends: 241 [2019-05-23 11:20:30,510 INFO L146 ILogger]: 0 DeclaredPredicates, 285 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2097, Invalid=12665, Unknown=0, NotChecked=0, Total=14762 [2019-05-23 11:20:30,511 INFO L146 ILogger]: Start minimizeSevpa. Operand 241 states. [2019-05-23 11:20:30,518 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 241 to 227. [2019-05-23 11:20:30,518 INFO L146 ILogger]: Start removeUnreachable. Operand 227 states. [2019-05-23 11:20:30,518 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2019-05-23 11:20:30,519 INFO L146 ILogger]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 209 [2019-05-23 11:20:30,519 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:30,519 INFO L146 ILogger]: Abstraction has 227 states and 228 transitions. [2019-05-23 11:20:30,519 INFO L146 ILogger]: Interpolant automaton has 74 states. [2019-05-23 11:20:30,519 INFO L146 ILogger]: Start isEmpty. Operand 227 states and 228 transitions. [2019-05-23 11:20:30,520 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 227 [2019-05-23 11:20:30,521 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:30,521 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:30,521 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:30,521 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:30,521 INFO L146 ILogger]: Analyzing trace with hash -1073121801, now seen corresponding path program 23 times [2019-05-23 11:20:30,522 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:30,522 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:30,522 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:30,522 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:30,523 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:30,543 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:31,774 INFO L146 ILogger]: Checked inductivity of 2004 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:31,774 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:31,774 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:31,786 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:32,551 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2019-05-23 11:20:32,551 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:32,555 INFO L146 ILogger]: Trace formula consists of 335 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:20:32,558 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:32,593 INFO L146 ILogger]: Checked inductivity of 2004 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:32,615 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:32,615 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:20:32,616 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:32,616 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:32,616 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:32,616 INFO L146 ILogger]: Start difference. First operand 227 states and 228 transitions. Second operand 31 states. [2019-05-23 11:20:32,830 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:32,830 INFO L146 ILogger]: Finished difference Result 319 states and 321 transitions. [2019-05-23 11:20:32,836 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:20:32,836 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 226 [2019-05-23 11:20:32,837 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:32,837 INFO L146 ILogger]: With dead ends: 319 [2019-05-23 11:20:32,838 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:20:32,838 INFO L146 ILogger]: 0 DeclaredPredicates, 255 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:32,839 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:20:32,847 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 232. [2019-05-23 11:20:32,847 INFO L146 ILogger]: Start removeUnreachable. Operand 232 states. [2019-05-23 11:20:32,848 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2019-05-23 11:20:32,848 INFO L146 ILogger]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 226 [2019-05-23 11:20:32,848 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:32,848 INFO L146 ILogger]: Abstraction has 232 states and 233 transitions. [2019-05-23 11:20:32,848 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:32,849 INFO L146 ILogger]: Start isEmpty. Operand 232 states and 233 transitions. [2019-05-23 11:20:32,850 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 232 [2019-05-23 11:20:32,852 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:32,852 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:32,852 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:32,853 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:32,853 INFO L146 ILogger]: Analyzing trace with hash -1639514848, now seen corresponding path program 24 times [2019-05-23 11:20:32,853 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:32,853 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:32,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:32,854 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:32,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:32,874 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,503 INFO L146 ILogger]: Checked inductivity of 2140 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:34,503 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:34,503 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:34,512 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:38,217 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2019-05-23 11:20:38,217 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:38,224 INFO L146 ILogger]: Trace formula consists of 342 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:20:38,226 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:38,263 INFO L146 ILogger]: Checked inductivity of 2140 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:38,284 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:38,284 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:20:38,284 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:20:38,285 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:20:38,285 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:38,285 INFO L146 ILogger]: Start difference. First operand 232 states and 233 transitions. Second operand 32 states. [2019-05-23 11:20:38,514 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:38,514 INFO L146 ILogger]: Finished difference Result 324 states and 326 transitions. [2019-05-23 11:20:38,515 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:20:38,515 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 231 [2019-05-23 11:20:38,515 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:38,516 INFO L146 ILogger]: With dead ends: 324 [2019-05-23 11:20:38,517 INFO L146 ILogger]: Without dead ends: 241 [2019-05-23 11:20:38,517 INFO L146 ILogger]: 0 DeclaredPredicates, 261 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:38,517 INFO L146 ILogger]: Start minimizeSevpa. Operand 241 states. [2019-05-23 11:20:38,524 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 241 to 237. [2019-05-23 11:20:38,524 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:20:38,524 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2019-05-23 11:20:38,525 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 231 [2019-05-23 11:20:38,525 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:38,525 INFO L146 ILogger]: Abstraction has 237 states and 238 transitions. [2019-05-23 11:20:38,525 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:20:38,525 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 238 transitions. [2019-05-23 11:20:38,526 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 237 [2019-05-23 11:20:38,526 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:38,527 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:38,527 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:38,527 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:38,527 INFO L146 ILogger]: Analyzing trace with hash -1034123369, now seen corresponding path program 25 times [2019-05-23 11:20:38,527 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:38,528 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:38,528 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,528 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:38,528 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,545 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,095 INFO L146 ILogger]: Checked inductivity of 2281 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:39,095 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:39,095 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:39,103 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:39,164 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,166 INFO L146 ILogger]: Trace formula consists of 349 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:20:39,169 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:39,210 INFO L146 ILogger]: Checked inductivity of 2281 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:39,228 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:39,229 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:20:39,229 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:20:39,229 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:20:39,230 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:20:39,230 INFO L146 ILogger]: Start difference. First operand 237 states and 238 transitions. Second operand 33 states. [2019-05-23 11:20:39,466 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:39,466 INFO L146 ILogger]: Finished difference Result 329 states and 331 transitions. [2019-05-23 11:20:39,466 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:20:39,466 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 236 [2019-05-23 11:20:39,467 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:39,467 INFO L146 ILogger]: With dead ends: 329 [2019-05-23 11:20:39,467 INFO L146 ILogger]: Without dead ends: 246 [2019-05-23 11:20:39,468 INFO L146 ILogger]: 0 DeclaredPredicates, 267 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:20:39,468 INFO L146 ILogger]: Start minimizeSevpa. Operand 246 states. [2019-05-23 11:20:39,475 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 246 to 242. [2019-05-23 11:20:39,475 INFO L146 ILogger]: Start removeUnreachable. Operand 242 states. [2019-05-23 11:20:39,476 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 242 states to 242 states and 243 transitions. [2019-05-23 11:20:39,476 INFO L146 ILogger]: Start accepts. Automaton has 242 states and 243 transitions. Word has length 236 [2019-05-23 11:20:39,476 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:39,476 INFO L146 ILogger]: Abstraction has 242 states and 243 transitions. [2019-05-23 11:20:39,476 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:20:39,476 INFO L146 ILogger]: Start isEmpty. Operand 242 states and 243 transitions. [2019-05-23 11:20:39,477 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 242 [2019-05-23 11:20:39,478 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:39,478 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:39,478 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:39,478 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:39,478 INFO L146 ILogger]: Analyzing trace with hash 725479296, now seen corresponding path program 26 times [2019-05-23 11:20:39,479 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:39,479 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:39,479 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:39,480 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:39,480 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:39,498 INFO L146 ILogger]: Conjunction of SSA is unsat