java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-tiling/pnr2_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:25:26,190 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:25:26,192 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:25:26,211 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:25:26,211 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:25:26,212 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:25:26,215 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:25:26,218 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:25:26,219 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:25:26,220 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:25:26,221 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:25:26,222 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:25:26,223 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:25:26,224 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:25:26,225 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:25:26,226 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:25:26,226 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:25:26,228 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:25:26,231 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:25:26,234 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:25:26,235 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:25:26,238 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:25:26,240 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:25:26,241 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:25:26,241 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:25:26,242 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:25:26,242 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:25:26,243 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:25:26,243 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:25:26,244 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:25:26,245 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:25:26,246 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:25:26,247 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:25:26,247 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:25:26,248 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:25:26,248 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:25:26,248 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:25:26,249 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:25:26,250 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:25:26,250 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:25:26,264 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:25:26,264 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:25:26,266 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:25:26,266 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:25:26,266 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:25:26,266 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:25:26,266 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:25:26,267 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:25:26,267 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:25:26,267 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:25:26,267 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:25:26,267 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:25:26,268 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:25:26,268 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:25:26,268 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:25:26,268 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:25:26,268 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:25:26,269 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:25:26,269 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:25:26,269 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:25:26,269 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:25:26,269 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:25:26,269 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:25:26,270 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:25:26,270 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:25:26,270 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:25:26,270 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:25:26,270 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:25:26,271 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:25:26,307 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:25:26,319 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:25:26,323 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:25:26,325 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:25:26,325 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:25:26,326 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/pnr2_true-unreach-call.i [2019-05-23 11:25:26,385 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f313c14/5ac8bd8847704fd9a8e68886e849f1e7/FLAG100601ae4 [2019-05-23 11:25:26,813 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:25:26,814 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/pnr2_true-unreach-call.i [2019-05-23 11:25:26,821 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f313c14/5ac8bd8847704fd9a8e68886e849f1e7/FLAG100601ae4 [2019-05-23 11:25:27,203 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f313c14/5ac8bd8847704fd9a8e68886e849f1e7 [2019-05-23 11:25:27,213 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:25:27,214 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:25:27,215 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:27,216 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:25:27,219 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:25:27,220 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,223 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8760b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27, skipping insertion in model container [2019-05-23 11:25:27,224 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,231 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:25:27,257 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:25:27,499 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:27,505 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:25:27,530 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:27,549 INFO L146 ILogger]: Completed translation [2019-05-23 11:25:27,549 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27 WrapperNode [2019-05-23 11:25:27,549 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:27,550 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:27,550 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:25:27,550 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:25:27,558 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,567 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,589 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:27,589 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:25:27,590 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:25:27,590 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:25:27,598 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,598 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,600 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,601 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,607 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,704 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,713 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (1/1) ... [2019-05-23 11:25:27,717 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:25:27,717 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:25:27,717 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:25:27,717 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:25:27,718 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:25:27,772 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:25:27,772 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:25:27,772 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:25:27,772 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:25:27,772 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:25:27,773 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:25:28,283 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:25:28,283 INFO L146 ILogger]: Removed 12 assume(true) statements. [2019-05-23 11:25:28,284 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:28 BoogieIcfgContainer [2019-05-23 11:25:28,284 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:25:28,285 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:25:28,286 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:25:28,289 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:25:28,289 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:25:27" (1/3) ... [2019-05-23 11:25:28,290 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c8f351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:28, skipping insertion in model container [2019-05-23 11:25:28,290 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:27" (2/3) ... [2019-05-23 11:25:28,291 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c8f351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:28, skipping insertion in model container [2019-05-23 11:25:28,291 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:28" (3/3) ... [2019-05-23 11:25:28,292 INFO L146 ILogger]: Analyzing ICFG pnr2_true-unreach-call.i [2019-05-23 11:25:28,300 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:25:28,308 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:25:28,323 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:25:28,351 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:25:28,352 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:25:28,352 INFO L146 ILogger]: Hoare is true [2019-05-23 11:25:28,352 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:25:28,352 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:25:28,352 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:25:28,353 INFO L146 ILogger]: Difference is false [2019-05-23 11:25:28,353 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:25:28,353 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:25:28,368 INFO L146 ILogger]: Start isEmpty. Operand 69 states. [2019-05-23 11:25:28,375 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:25:28,375 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:28,376 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:28,378 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:28,383 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:28,383 INFO L146 ILogger]: Analyzing trace with hash -1996105444, now seen corresponding path program 1 times [2019-05-23 11:25:28,385 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:28,385 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:28,431 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:28,431 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:28,431 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:28,495 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:28,630 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:28,632 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:28,633 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:25:28,638 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:25:28,652 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:25:28,652 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:25:28,655 INFO L146 ILogger]: Start difference. First operand 69 states. Second operand 4 states. [2019-05-23 11:25:29,027 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:29,027 INFO L146 ILogger]: Finished difference Result 121 states and 134 transitions. [2019-05-23 11:25:29,028 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:25:29,029 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 26 [2019-05-23 11:25:29,030 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:29,040 INFO L146 ILogger]: With dead ends: 121 [2019-05-23 11:25:29,040 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:25:29,044 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:25:29,063 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:25:29,083 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 61. [2019-05-23 11:25:29,085 INFO L146 ILogger]: Start removeUnreachable. Operand 61 states. [2019-05-23 11:25:29,087 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2019-05-23 11:25:29,089 INFO L146 ILogger]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 26 [2019-05-23 11:25:29,089 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:29,089 INFO L146 ILogger]: Abstraction has 61 states and 64 transitions. [2019-05-23 11:25:29,089 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:25:29,090 INFO L146 ILogger]: Start isEmpty. Operand 61 states and 64 transitions. [2019-05-23 11:25:29,092 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:25:29,092 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:29,092 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:29,093 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:29,093 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:29,093 INFO L146 ILogger]: Analyzing trace with hash 1308690752, now seen corresponding path program 1 times [2019-05-23 11:25:29,093 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:29,094 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:29,095 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:29,095 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:29,095 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:29,137 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:29,709 WARN L146 ILogger]: Spent 124.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2019-05-23 11:25:29,763 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:29,763 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:29,763 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:29,781 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:29,819 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:29,821 INFO L146 ILogger]: Trace formula consists of 92 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:25:29,828 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:29,912 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:29,913 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:29,951 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:29,952 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:29,952 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:25:29,994 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:29,996 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2019-05-23 11:25:29,997 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:30,094 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:30,095 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:30,095 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:12 [2019-05-23 11:25:30,145 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:25:30,146 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:30,148 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:30,149 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:30,149 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:25:30,242 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:30,272 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:30,272 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:25:30,273 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:25:30,273 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:25:30,274 INFO L146 ILogger]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:25:30,274 INFO L146 ILogger]: Start difference. First operand 61 states and 64 transitions. Second operand 13 states. [2019-05-23 11:25:31,613 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:31,613 INFO L146 ILogger]: Finished difference Result 156 states and 164 transitions. [2019-05-23 11:25:31,614 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:25:31,614 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 54 [2019-05-23 11:25:31,615 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:31,619 INFO L146 ILogger]: With dead ends: 156 [2019-05-23 11:25:31,619 INFO L146 ILogger]: Without dead ends: 154 [2019-05-23 11:25:31,621 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:25:31,621 INFO L146 ILogger]: Start minimizeSevpa. Operand 154 states. [2019-05-23 11:25:31,633 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 154 to 97. [2019-05-23 11:25:31,634 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:25:31,635 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2019-05-23 11:25:31,635 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 54 [2019-05-23 11:25:31,636 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:31,636 INFO L146 ILogger]: Abstraction has 97 states and 103 transitions. [2019-05-23 11:25:31,636 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:25:31,636 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 103 transitions. [2019-05-23 11:25:31,638 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:25:31,638 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:31,639 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:31,639 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:31,639 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:31,639 INFO L146 ILogger]: Analyzing trace with hash -534910560, now seen corresponding path program 1 times [2019-05-23 11:25:31,640 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:31,640 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:31,641 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:31,641 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:31,641 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:31,665 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:32,117 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:32,117 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:32,117 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:32,129 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:32,151 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:32,152 INFO L146 ILogger]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:25:32,156 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:32,288 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:32,288 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:32,301 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:32,301 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:32,302 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:32,405 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:32,406 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2019-05-23 11:25:32,407 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:32,467 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:32,468 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 11:25:32,468 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2019-05-23 11:25:32,538 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:32,539 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:32,544 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:32,544 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:32,544 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:32,641 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:32,671 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:32,671 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2019-05-23 11:25:32,672 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:25:32,672 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:25:32,673 INFO L146 ILogger]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:25:32,673 INFO L146 ILogger]: Start difference. First operand 97 states and 103 transitions. Second operand 21 states. [2019-05-23 11:25:33,832 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:33,833 INFO L146 ILogger]: Finished difference Result 176 states and 186 transitions. [2019-05-23 11:25:33,833 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:25:33,834 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 54 [2019-05-23 11:25:33,834 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:33,836 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:25:33,836 INFO L146 ILogger]: Without dead ends: 174 [2019-05-23 11:25:33,837 INFO L146 ILogger]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:25:33,838 INFO L146 ILogger]: Start minimizeSevpa. Operand 174 states. [2019-05-23 11:25:33,856 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 174 to 126. [2019-05-23 11:25:33,856 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:25:33,858 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2019-05-23 11:25:33,859 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 54 [2019-05-23 11:25:33,859 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:33,859 INFO L146 ILogger]: Abstraction has 126 states and 135 transitions. [2019-05-23 11:25:33,860 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:25:33,860 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 135 transitions. [2019-05-23 11:25:33,865 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:25:33,865 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:33,868 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:33,869 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:33,869 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:33,869 INFO L146 ILogger]: Analyzing trace with hash -1990965869, now seen corresponding path program 1 times [2019-05-23 11:25:33,869 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:33,870 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:33,871 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:33,871 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:33,872 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:33,913 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:34,120 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:34,120 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:34,120 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:34,131 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:34,149 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:34,150 INFO L146 ILogger]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:25:34,154 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:34,223 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:25:34,223 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,264 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,265 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,266 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:14 [2019-05-23 11:25:34,391 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:25:34,392 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,393 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,393 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,394 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:25:34,431 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:34,450 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:34,450 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2019-05-23 11:25:34,451 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:25:34,451 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:25:34,452 INFO L146 ILogger]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:25:34,452 INFO L146 ILogger]: Start difference. First operand 126 states and 135 transitions. Second operand 21 states. [2019-05-23 11:25:35,336 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:35,336 INFO L146 ILogger]: Finished difference Result 244 states and 260 transitions. [2019-05-23 11:25:35,337 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:25:35,337 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 64 [2019-05-23 11:25:35,337 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:35,339 INFO L146 ILogger]: With dead ends: 244 [2019-05-23 11:25:35,339 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:25:35,341 INFO L146 ILogger]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=256, Invalid=934, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:25:35,342 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:25:35,353 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 158. [2019-05-23 11:25:35,354 INFO L146 ILogger]: Start removeUnreachable. Operand 158 states. [2019-05-23 11:25:35,355 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2019-05-23 11:25:35,356 INFO L146 ILogger]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 64 [2019-05-23 11:25:35,356 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:35,356 INFO L146 ILogger]: Abstraction has 158 states and 170 transitions. [2019-05-23 11:25:35,356 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:25:35,356 INFO L146 ILogger]: Start isEmpty. Operand 158 states and 170 transitions. [2019-05-23 11:25:35,358 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:25:35,358 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:35,358 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:35,359 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:35,359 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:35,359 INFO L146 ILogger]: Analyzing trace with hash 1542307315, now seen corresponding path program 1 times [2019-05-23 11:25:35,359 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:35,359 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:35,360 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:35,360 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:35,360 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:35,377 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:35,596 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:35,596 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:35,597 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:35,608 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:35,626 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:35,627 INFO L146 ILogger]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:25:35,631 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:35,838 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:25:35,838 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:35,844 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:35,845 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:35,845 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-05-23 11:25:35,937 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:35,938 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:35,942 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:35,943 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:35,943 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:36,007 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:36,026 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:36,026 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:25:36,026 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:25:36,027 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:25:36,027 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:25:36,027 INFO L146 ILogger]: Start difference. First operand 158 states and 170 transitions. Second operand 24 states. [2019-05-23 11:25:37,435 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:37,436 INFO L146 ILogger]: Finished difference Result 276 states and 294 transitions. [2019-05-23 11:25:37,436 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:25:37,436 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 64 [2019-05-23 11:25:37,436 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:37,438 INFO L146 ILogger]: With dead ends: 276 [2019-05-23 11:25:37,438 INFO L146 ILogger]: Without dead ends: 274 [2019-05-23 11:25:37,439 INFO L146 ILogger]: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=431, Invalid=1375, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:25:37,440 INFO L146 ILogger]: Start minimizeSevpa. Operand 274 states. [2019-05-23 11:25:37,453 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 274 to 222. [2019-05-23 11:25:37,453 INFO L146 ILogger]: Start removeUnreachable. Operand 222 states. [2019-05-23 11:25:37,455 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 222 states to 222 states and 241 transitions. [2019-05-23 11:25:37,455 INFO L146 ILogger]: Start accepts. Automaton has 222 states and 241 transitions. Word has length 64 [2019-05-23 11:25:37,455 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:37,456 INFO L146 ILogger]: Abstraction has 222 states and 241 transitions. [2019-05-23 11:25:37,456 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:25:37,456 INFO L146 ILogger]: Start isEmpty. Operand 222 states and 241 transitions. [2019-05-23 11:25:37,458 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:25:37,458 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:37,458 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:37,458 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:37,459 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:37,459 INFO L146 ILogger]: Analyzing trace with hash -655198682, now seen corresponding path program 2 times [2019-05-23 11:25:37,459 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:37,459 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:37,460 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:37,460 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:37,460 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:37,472 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:37,963 WARN L146 ILogger]: Spent 113.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 9 [2019-05-23 11:25:38,285 INFO L146 ILogger]: Checked inductivity of 23 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:38,286 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:38,286 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:38,299 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:38,327 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:38,328 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:38,329 INFO L146 ILogger]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:25:38,332 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:38,877 INFO L146 ILogger]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:38,896 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:38,896 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2019-05-23 11:25:38,897 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:25:38,897 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:25:38,898 INFO L146 ILogger]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:25:38,898 INFO L146 ILogger]: Start difference. First operand 222 states and 241 transitions. Second operand 23 states. [2019-05-23 11:25:39,444 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:39,445 INFO L146 ILogger]: Finished difference Result 386 states and 414 transitions. [2019-05-23 11:25:39,447 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:25:39,447 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 74 [2019-05-23 11:25:39,448 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:39,450 INFO L146 ILogger]: With dead ends: 386 [2019-05-23 11:25:39,450 INFO L146 ILogger]: Without dead ends: 352 [2019-05-23 11:25:39,451 INFO L146 ILogger]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:25:39,452 INFO L146 ILogger]: Start minimizeSevpa. Operand 352 states. [2019-05-23 11:25:39,462 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 352 to 227. [2019-05-23 11:25:39,463 INFO L146 ILogger]: Start removeUnreachable. Operand 227 states. [2019-05-23 11:25:39,464 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 227 states to 227 states and 243 transitions. [2019-05-23 11:25:39,464 INFO L146 ILogger]: Start accepts. Automaton has 227 states and 243 transitions. Word has length 74 [2019-05-23 11:25:39,464 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:39,464 INFO L146 ILogger]: Abstraction has 227 states and 243 transitions. [2019-05-23 11:25:39,465 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:25:39,465 INFO L146 ILogger]: Start isEmpty. Operand 227 states and 243 transitions. [2019-05-23 11:25:39,467 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:25:39,467 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:39,467 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:39,467 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:39,467 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:39,468 INFO L146 ILogger]: Analyzing trace with hash -426747036, now seen corresponding path program 2 times [2019-05-23 11:25:39,468 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:39,468 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:39,469 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:39,469 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:39,469 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:39,483 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:39,960 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:39,961 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:39,961 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:39,969 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:39,989 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:39,989 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:39,990 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:25:39,996 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:40,099 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:40,099 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,110 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,111 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 11:25:40,111 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:23 [2019-05-23 11:25:40,138 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:40,139 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2019-05-23 11:25:40,140 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,150 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,151 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,151 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:23 [2019-05-23 11:25:40,219 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:40,220 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-05-23 11:25:40,221 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,233 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,233 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,234 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:18 [2019-05-23 11:25:40,248 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:40,249 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-05-23 11:25:40,249 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,265 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,266 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 11:25:40,266 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:15 [2019-05-23 11:25:40,314 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:25:40,314 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,319 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,319 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,320 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-05-23 11:25:40,401 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:40,419 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:40,420 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2019-05-23 11:25:40,420 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:25:40,420 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:25:40,420 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:25:40,421 INFO L146 ILogger]: Start difference. First operand 227 states and 243 transitions. Second operand 25 states. [2019-05-23 11:25:41,196 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:41,196 INFO L146 ILogger]: Finished difference Result 340 states and 363 transitions. [2019-05-23 11:25:41,196 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:25:41,197 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 82 [2019-05-23 11:25:41,197 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:41,199 INFO L146 ILogger]: With dead ends: 340 [2019-05-23 11:25:41,200 INFO L146 ILogger]: Without dead ends: 338 [2019-05-23 11:25:41,201 INFO L146 ILogger]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=1133, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:25:41,201 INFO L146 ILogger]: Start minimizeSevpa. Operand 338 states. [2019-05-23 11:25:41,211 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 338 to 286. [2019-05-23 11:25:41,211 INFO L146 ILogger]: Start removeUnreachable. Operand 286 states. [2019-05-23 11:25:41,212 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 286 states to 286 states and 308 transitions. [2019-05-23 11:25:41,212 INFO L146 ILogger]: Start accepts. Automaton has 286 states and 308 transitions. Word has length 82 [2019-05-23 11:25:41,213 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:41,213 INFO L146 ILogger]: Abstraction has 286 states and 308 transitions. [2019-05-23 11:25:41,213 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:25:41,213 INFO L146 ILogger]: Start isEmpty. Operand 286 states and 308 transitions. [2019-05-23 11:25:41,215 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:25:41,215 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:41,215 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:41,216 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:41,216 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:41,216 INFO L146 ILogger]: Analyzing trace with hash -594351164, now seen corresponding path program 1 times [2019-05-23 11:25:41,216 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:41,216 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:41,217 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:41,217 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:41,217 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:41,230 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:41,829 WARN L146 ILogger]: Spent 287.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2019-05-23 11:25:42,144 WARN L146 ILogger]: Spent 213.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 13 [2019-05-23 11:25:42,345 INFO L146 ILogger]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:42,345 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:42,346 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:42,354 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:42,373 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:42,374 INFO L146 ILogger]: Trace formula consists of 135 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:25:42,376 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:42,457 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:42,457 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:42,465 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:42,466 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:42,466 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:42,505 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:42,506 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2019-05-23 11:25:42,507 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:42,515 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:42,516 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:42,516 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:42,633 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:42,634 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-05-23 11:25:42,635 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:42,701 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:42,702 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:42,713 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:25:42,747 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:42,748 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-05-23 11:25:42,748 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:42,765 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:42,766 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 11:25:42,766 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:14 [2019-05-23 11:25:42,816 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:42,817 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:42,824 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:42,825 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:42,825 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:42,946 INFO L146 ILogger]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:42,964 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:42,965 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2019-05-23 11:25:42,965 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:25:42,965 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:25:42,966 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:25:42,966 INFO L146 ILogger]: Start difference. First operand 286 states and 308 transitions. Second operand 26 states. [2019-05-23 11:25:45,180 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:45,181 INFO L146 ILogger]: Finished difference Result 427 states and 453 transitions. [2019-05-23 11:25:45,181 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:25:45,181 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 82 [2019-05-23 11:25:45,182 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:45,185 INFO L146 ILogger]: With dead ends: 427 [2019-05-23 11:25:45,185 INFO L146 ILogger]: Without dead ends: 425 [2019-05-23 11:25:45,186 INFO L146 ILogger]: 0 DeclaredPredicates, 135 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=745, Invalid=2915, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:25:45,187 INFO L146 ILogger]: Start minimizeSevpa. Operand 425 states. [2019-05-23 11:25:45,194 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 425 to 141. [2019-05-23 11:25:45,194 INFO L146 ILogger]: Start removeUnreachable. Operand 141 states. [2019-05-23 11:25:45,195 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2019-05-23 11:25:45,195 INFO L146 ILogger]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 82 [2019-05-23 11:25:45,195 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:45,195 INFO L146 ILogger]: Abstraction has 141 states and 149 transitions. [2019-05-23 11:25:45,195 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:25:45,196 INFO L146 ILogger]: Start isEmpty. Operand 141 states and 149 transitions. [2019-05-23 11:25:45,196 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:25:45,197 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:45,197 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:45,197 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:45,197 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:45,197 INFO L146 ILogger]: Analyzing trace with hash 747518647, now seen corresponding path program 3 times [2019-05-23 11:25:45,198 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:45,198 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:45,198 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:45,199 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:45,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:45,211 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:45,456 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:45,457 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:45,457 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:45,466 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:45,503 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:25:45,503 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:45,504 INFO L146 ILogger]: Trace formula consists of 149 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:25:45,507 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:45,594 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:45,594 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:45,602 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:45,603 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:45,603 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:23 [2019-05-23 11:25:45,741 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:45,742 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2019-05-23 11:25:45,742 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:45,751 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:45,752 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:45,752 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:25:45,760 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:45,761 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2019-05-23 11:25:45,762 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:45,773 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:45,773 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 11:25:45,774 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:17 [2019-05-23 11:25:45,869 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:25:45,869 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:45,872 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:45,872 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:45,872 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-05-23 11:25:45,951 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:45,979 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:45,979 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2019-05-23 11:25:45,980 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:25:45,980 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:25:45,980 INFO L146 ILogger]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:25:45,981 INFO L146 ILogger]: Start difference. First operand 141 states and 149 transitions. Second operand 28 states. [2019-05-23 11:25:46,829 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:46,829 INFO L146 ILogger]: Finished difference Result 223 states and 234 transitions. [2019-05-23 11:25:46,832 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:25:46,832 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 92 [2019-05-23 11:25:46,832 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:46,833 INFO L146 ILogger]: With dead ends: 223 [2019-05-23 11:25:46,834 INFO L146 ILogger]: Without dead ends: 221 [2019-05-23 11:25:46,835 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=359, Invalid=1621, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:25:46,835 INFO L146 ILogger]: Start minimizeSevpa. Operand 221 states. [2019-05-23 11:25:46,842 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 221 to 171. [2019-05-23 11:25:46,842 INFO L146 ILogger]: Start removeUnreachable. Operand 171 states. [2019-05-23 11:25:46,843 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2019-05-23 11:25:46,843 INFO L146 ILogger]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 92 [2019-05-23 11:25:46,843 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:46,843 INFO L146 ILogger]: Abstraction has 171 states and 182 transitions. [2019-05-23 11:25:46,843 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:25:46,844 INFO L146 ILogger]: Start isEmpty. Operand 171 states and 182 transitions. [2019-05-23 11:25:46,844 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:25:46,845 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:46,845 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:46,845 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:46,845 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:46,845 INFO L146 ILogger]: Analyzing trace with hash -2135334121, now seen corresponding path program 1 times [2019-05-23 11:25:46,846 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:46,846 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:46,846 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:46,846 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:46,847 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:46,857 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:47,238 WARN L146 ILogger]: Spent 242.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-05-23 11:25:47,521 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:47,522 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:47,522 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 11:25:47,532 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:47,553 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:47,554 INFO L146 ILogger]: Trace formula consists of 150 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:25:47,556 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:47,651 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:47,652 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,660 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:47,661 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,661 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:47,734 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:47,735 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:25:47,735 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,745 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:47,745 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,745 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:25:47,753 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:47,754 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:25:47,754 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,762 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:47,763 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 11:25:47,763 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:16 [2019-05-23 11:25:47,861 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:47,862 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,865 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:47,865 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,865 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:47,962 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:47,980 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:47,980 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2019-05-23 11:25:47,981 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:25:47,982 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:25:47,982 INFO L146 ILogger]: CoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:25:47,982 INFO L146 ILogger]: Start difference. First operand 171 states and 182 transitions. Second operand 29 states. [2019-05-23 11:25:50,815 WARN L146 ILogger]: Spent 153.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2019-05-23 11:25:50,977 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:50,977 INFO L146 ILogger]: Finished difference Result 282 states and 295 transitions. [2019-05-23 11:25:50,977 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:25:50,978 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 92 [2019-05-23 11:25:50,978 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:50,979 INFO L146 ILogger]: With dead ends: 282 [2019-05-23 11:25:50,979 INFO L146 ILogger]: Without dead ends: 280 [2019-05-23 11:25:50,981 INFO L146 ILogger]: 0 DeclaredPredicates, 151 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=947, Invalid=4023, Unknown=0, NotChecked=0, Total=4970 [2019-05-23 11:25:50,982 INFO L146 ILogger]: Start minimizeSevpa. Operand 280 states. [2019-05-23 11:25:50,987 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 280 to 107. [2019-05-23 11:25:50,987 INFO L146 ILogger]: Start removeUnreachable. Operand 107 states. [2019-05-23 11:25:50,988 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2019-05-23 11:25:50,988 INFO L146 ILogger]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 92 [2019-05-23 11:25:50,988 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:50,988 INFO L146 ILogger]: Abstraction has 107 states and 112 transitions. [2019-05-23 11:25:50,988 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:25:50,988 INFO L146 ILogger]: Start isEmpty. Operand 107 states and 112 transitions. [2019-05-23 11:25:50,989 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 103 [2019-05-23 11:25:50,989 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:50,990 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:50,990 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:50,990 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:50,990 INFO L146 ILogger]: Analyzing trace with hash 1478970954, now seen corresponding path program 4 times [2019-05-23 11:25:50,991 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:50,991 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:50,991 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:50,992 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:50,992 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:51,017 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:51,450 INFO L146 ILogger]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:51,450 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:51,450 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 11:25:51,461 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:25:51,482 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:25:51,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:51,483 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:25:51,485 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:51,621 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:51,622 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:51,630 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:51,630 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:51,631 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:25:51,665 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:51,666 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-05-23 11:25:51,666 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:51,769 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-05-23 11:25:51,770 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:51,770 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 11:25:51,770 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2019-05-23 11:25:51,952 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:25:51,953 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:51,954 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:51,954 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:51,954 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:25:52,007 INFO L146 ILogger]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:52,027 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:52,027 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2019-05-23 11:25:52,027 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:25:52,028 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:25:52,028 INFO L146 ILogger]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:25:52,028 INFO L146 ILogger]: Start difference. First operand 107 states and 112 transitions. Second operand 29 states. [2019-05-23 11:25:53,245 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:53,246 INFO L146 ILogger]: Finished difference Result 218 states and 228 transitions. [2019-05-23 11:25:53,246 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:25:53,246 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 102 [2019-05-23 11:25:53,247 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:53,251 INFO L146 ILogger]: With dead ends: 218 [2019-05-23 11:25:53,251 INFO L146 ILogger]: Without dead ends: 216 [2019-05-23 11:25:53,253 INFO L146 ILogger]: 0 DeclaredPredicates, 140 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=365, Invalid=2085, Unknown=0, NotChecked=0, Total=2450 [2019-05-23 11:25:53,253 INFO L146 ILogger]: Start minimizeSevpa. Operand 216 states. [2019-05-23 11:25:53,259 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 216 to 147. [2019-05-23 11:25:53,259 INFO L146 ILogger]: Start removeUnreachable. Operand 147 states. [2019-05-23 11:25:53,260 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2019-05-23 11:25:53,260 INFO L146 ILogger]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 102 [2019-05-23 11:25:53,260 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:53,261 INFO L146 ILogger]: Abstraction has 147 states and 155 transitions. [2019-05-23 11:25:53,261 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:25:53,261 INFO L146 ILogger]: Start isEmpty. Operand 147 states and 155 transitions. [2019-05-23 11:25:53,262 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 103 [2019-05-23 11:25:53,262 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:53,262 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:53,262 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:53,262 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:53,263 INFO L146 ILogger]: Analyzing trace with hash 1416642218, now seen corresponding path program 1 times [2019-05-23 11:25:53,263 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:53,263 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:53,263 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:53,264 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:53,264 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:53,275 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:53,608 INFO L146 ILogger]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:53,608 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:53,608 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 11:25:53,616 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:53,641 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:53,642 INFO L146 ILogger]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:25:53,644 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:53,785 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:25:53,786 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:53,798 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:53,798 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:53,799 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:53,837 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:53,838 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:25:53,838 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:53,846 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:53,847 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:53,847 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:16 [2019-05-23 11:25:54,174 WARN L146 ILogger]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-05-23 11:25:54,201 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:54,202 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:54,206 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:54,206 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:54,206 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:54,295 INFO L146 ILogger]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:54,313 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:54,314 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:25:54,314 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:25:54,314 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:25:54,315 INFO L146 ILogger]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:25:54,315 INFO L146 ILogger]: Start difference. First operand 147 states and 155 transitions. Second operand 32 states. [2019-05-23 11:25:56,280 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:56,280 INFO L146 ILogger]: Finished difference Result 252 states and 264 transitions. [2019-05-23 11:25:56,281 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:25:56,281 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 102 [2019-05-23 11:25:56,281 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:56,282 INFO L146 ILogger]: With dead ends: 252 [2019-05-23 11:25:56,282 INFO L146 ILogger]: Without dead ends: 250 [2019-05-23 11:25:56,283 INFO L146 ILogger]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=656, Invalid=3126, Unknown=0, NotChecked=0, Total=3782 [2019-05-23 11:25:56,284 INFO L146 ILogger]: Start minimizeSevpa. Operand 250 states. [2019-05-23 11:25:56,290 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 250 to 176. [2019-05-23 11:25:56,291 INFO L146 ILogger]: Start removeUnreachable. Operand 176 states. [2019-05-23 11:25:56,291 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 176 states to 176 states and 187 transitions. [2019-05-23 11:25:56,291 INFO L146 ILogger]: Start accepts. Automaton has 176 states and 187 transitions. Word has length 102 [2019-05-23 11:25:56,292 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:56,292 INFO L146 ILogger]: Abstraction has 176 states and 187 transitions. [2019-05-23 11:25:56,292 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:25:56,292 INFO L146 ILogger]: Start isEmpty. Operand 176 states and 187 transitions. [2019-05-23 11:25:56,293 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:25:56,293 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:56,293 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:56,293 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:56,294 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:56,294 INFO L146 ILogger]: Analyzing trace with hash 286737949, now seen corresponding path program 5 times [2019-05-23 11:25:56,294 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:56,294 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:56,295 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:56,295 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:56,295 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:56,307 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:56,720 INFO L146 ILogger]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:56,720 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:56,720 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 11:25:56,729 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:25:56,774 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:25:56,774 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:56,775 INFO L146 ILogger]: Trace formula consists of 179 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:25:56,777 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:56,910 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:25:56,911 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:56,916 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:56,917 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:56,917 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:14 [2019-05-23 11:25:57,786 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:25:57,786 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:57,787 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:57,787 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:57,788 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:25:57,848 INFO L146 ILogger]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:57,868 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:57,868 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2019-05-23 11:25:57,869 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:25:57,869 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:25:57,869 INFO L146 ILogger]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:25:57,870 INFO L146 ILogger]: Start difference. First operand 176 states and 187 transitions. Second operand 33 states. [2019-05-23 11:25:59,250 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:59,250 INFO L146 ILogger]: Finished difference Result 314 states and 332 transitions. [2019-05-23 11:25:59,250 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:25:59,251 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 112 [2019-05-23 11:25:59,251 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:59,252 INFO L146 ILogger]: With dead ends: 314 [2019-05-23 11:25:59,253 INFO L146 ILogger]: Without dead ends: 312 [2019-05-23 11:25:59,254 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=413, Invalid=2893, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:25:59,254 INFO L146 ILogger]: Start minimizeSevpa. Operand 312 states. [2019-05-23 11:25:59,263 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 312 to 208. [2019-05-23 11:25:59,264 INFO L146 ILogger]: Start removeUnreachable. Operand 208 states. [2019-05-23 11:25:59,264 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2019-05-23 11:25:59,264 INFO L146 ILogger]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 112 [2019-05-23 11:25:59,265 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:59,265 INFO L146 ILogger]: Abstraction has 208 states and 222 transitions. [2019-05-23 11:25:59,265 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:25:59,265 INFO L146 ILogger]: Start isEmpty. Operand 208 states and 222 transitions. [2019-05-23 11:25:59,266 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:25:59,266 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:59,266 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:59,267 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:59,267 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:59,267 INFO L146 ILogger]: Analyzing trace with hash 161533565, now seen corresponding path program 2 times [2019-05-23 11:25:59,267 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:59,267 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:59,268 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:59,268 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:59,268 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:59,279 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:59,734 WARN L146 ILogger]: Spent 280.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-05-23 11:25:59,980 WARN L146 ILogger]: Spent 194.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2019-05-23 11:26:00,170 INFO L146 ILogger]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:00,170 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:00,170 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:00,178 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:00,207 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:00,207 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:00,208 INFO L146 ILogger]: Trace formula consists of 180 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:26:00,210 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:00,349 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:26:00,350 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,358 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:00,359 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,359 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-05-23 11:26:00,585 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:00,585 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,588 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:00,588 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,589 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:00,680 INFO L146 ILogger]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:00,698 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:00,698 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2019-05-23 11:26:00,698 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:26:00,699 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:26:00,699 INFO L146 ILogger]: CoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:26:00,699 INFO L146 ILogger]: Start difference. First operand 208 states and 222 transitions. Second operand 36 states. [2019-05-23 11:26:04,764 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2019-05-23 11:26:05,159 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:05,159 INFO L146 ILogger]: Finished difference Result 368 states and 388 transitions. [2019-05-23 11:26:05,159 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:26:05,159 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 112 [2019-05-23 11:26:05,160 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:05,161 INFO L146 ILogger]: With dead ends: 368 [2019-05-23 11:26:05,161 INFO L146 ILogger]: Without dead ends: 366 [2019-05-23 11:26:05,163 INFO L146 ILogger]: 0 DeclaredPredicates, 163 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=711, Invalid=3981, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:26:05,164 INFO L146 ILogger]: Start minimizeSevpa. Operand 366 states. [2019-05-23 11:26:05,177 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 366 to 292. [2019-05-23 11:26:05,177 INFO L146 ILogger]: Start removeUnreachable. Operand 292 states. [2019-05-23 11:26:05,178 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 292 states to 292 states and 313 transitions. [2019-05-23 11:26:05,178 INFO L146 ILogger]: Start accepts. Automaton has 292 states and 313 transitions. Word has length 112 [2019-05-23 11:26:05,178 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:05,178 INFO L146 ILogger]: Abstraction has 292 states and 313 transitions. [2019-05-23 11:26:05,178 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:26:05,178 INFO L146 ILogger]: Start isEmpty. Operand 292 states and 313 transitions. [2019-05-23 11:26:05,179 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 123 [2019-05-23 11:26:05,179 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:05,179 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:05,180 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:05,180 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:05,180 INFO L146 ILogger]: Analyzing trace with hash 205378096, now seen corresponding path program 6 times [2019-05-23 11:26:05,180 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:05,180 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:05,181 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:05,181 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:05,181 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:05,190 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:05,981 INFO L146 ILogger]: Checked inductivity of 114 backedges. 56 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:05,982 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:05,982 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:05,990 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:26:06,024 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:26:06,024 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:06,025 INFO L146 ILogger]: Trace formula consists of 194 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:26:06,027 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:06,587 INFO L146 ILogger]: Checked inductivity of 114 backedges. 84 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:06,607 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:06,607 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2019-05-23 11:26:06,608 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:26:06,608 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:26:06,608 INFO L146 ILogger]: CoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:26:06,608 INFO L146 ILogger]: Start difference. First operand 292 states and 313 transitions. Second operand 35 states. [2019-05-23 11:26:07,179 WARN L146 ILogger]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:26:07,931 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:07,931 INFO L146 ILogger]: Finished difference Result 477 states and 507 transitions. [2019-05-23 11:26:07,932 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:26:07,932 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 122 [2019-05-23 11:26:07,932 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:07,935 INFO L146 ILogger]: With dead ends: 477 [2019-05-23 11:26:07,935 INFO L146 ILogger]: Without dead ends: 423 [2019-05-23 11:26:07,937 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=521, Invalid=2235, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:26:07,937 INFO L146 ILogger]: Start minimizeSevpa. Operand 423 states. [2019-05-23 11:26:07,951 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 423 to 297. [2019-05-23 11:26:07,952 INFO L146 ILogger]: Start removeUnreachable. Operand 297 states. [2019-05-23 11:26:07,952 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 297 states to 297 states and 315 transitions. [2019-05-23 11:26:07,952 INFO L146 ILogger]: Start accepts. Automaton has 297 states and 315 transitions. Word has length 122 [2019-05-23 11:26:07,953 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:07,953 INFO L146 ILogger]: Abstraction has 297 states and 315 transitions. [2019-05-23 11:26:07,953 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:26:07,953 INFO L146 ILogger]: Start isEmpty. Operand 297 states and 315 transitions. [2019-05-23 11:26:07,955 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:26:07,955 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:07,955 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:07,955 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:07,955 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:07,956 INFO L146 ILogger]: Analyzing trace with hash -110868370, now seen corresponding path program 7 times [2019-05-23 11:26:07,956 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:07,956 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:07,956 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:07,957 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:07,957 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:07,969 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:08,818 INFO L146 ILogger]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:08,819 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:08,819 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:08,828 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:08,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:08,861 INFO L146 ILogger]: Trace formula consists of 206 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:26:08,864 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:09,003 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:26:09,004 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,012 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:09,012 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,013 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:26:09,043 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:09,045 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2019-05-23 11:26:09,046 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,053 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:09,054 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,054 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:26:09,105 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:09,108 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2019-05-23 11:26:09,108 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,117 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:09,118 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,118 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:09,129 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:09,130 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2019-05-23 11:26:09,130 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,147 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:09,148 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,148 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:14 [2019-05-23 11:26:09,287 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:26:09,288 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,289 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:09,289 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:09,289 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:26:09,361 INFO L146 ILogger]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:09,380 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:09,380 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 34 [2019-05-23 11:26:09,380 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:26:09,381 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:26:09,381 INFO L146 ILogger]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:26:09,381 INFO L146 ILogger]: Start difference. First operand 297 states and 315 transitions. Second operand 34 states. [2019-05-23 11:26:10,546 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:10,546 INFO L146 ILogger]: Finished difference Result 450 states and 475 transitions. [2019-05-23 11:26:10,557 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:26:10,557 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 130 [2019-05-23 11:26:10,557 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:10,558 INFO L146 ILogger]: With dead ends: 450 [2019-05-23 11:26:10,558 INFO L146 ILogger]: Without dead ends: 448 [2019-05-23 11:26:10,560 INFO L146 ILogger]: 0 DeclaredPredicates, 176 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=450, Invalid=2856, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:26:10,560 INFO L146 ILogger]: Start minimizeSevpa. Operand 448 states. [2019-05-23 11:26:10,576 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 448 to 356. [2019-05-23 11:26:10,576 INFO L146 ILogger]: Start removeUnreachable. Operand 356 states. [2019-05-23 11:26:10,577 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 356 states to 356 states and 380 transitions. [2019-05-23 11:26:10,577 INFO L146 ILogger]: Start accepts. Automaton has 356 states and 380 transitions. Word has length 130 [2019-05-23 11:26:10,577 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:10,578 INFO L146 ILogger]: Abstraction has 356 states and 380 transitions. [2019-05-23 11:26:10,578 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:26:10,578 INFO L146 ILogger]: Start isEmpty. Operand 356 states and 380 transitions. [2019-05-23 11:26:10,579 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:26:10,579 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:10,579 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:10,580 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:10,580 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:10,580 INFO L146 ILogger]: Analyzing trace with hash -1646597938, now seen corresponding path program 2 times [2019-05-23 11:26:10,580 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:10,580 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:10,581 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:10,581 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:10,581 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:10,593 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:10,995 WARN L146 ILogger]: Spent 238.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-05-23 11:26:11,318 INFO L146 ILogger]: Checked inductivity of 107 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:11,319 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:11,319 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:11,327 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:11,382 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:11,382 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:11,384 INFO L146 ILogger]: Trace formula consists of 207 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:26:11,386 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:11,612 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:26:11,613 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,622 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,623 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,623 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:26:11,660 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,661 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2019-05-23 11:26:11,661 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,671 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,671 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,672 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:26:11,733 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,734 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:26:11,734 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,743 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,744 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,744 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:11,751 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,752 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:26:11,752 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,763 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,764 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,764 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:16 [2019-05-23 11:26:11,951 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:11,951 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,953 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,954 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,954 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:12,062 INFO L146 ILogger]: Checked inductivity of 107 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:12,080 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:12,081 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2019-05-23 11:26:12,081 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:26:12,081 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:26:12,082 INFO L146 ILogger]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:26:12,082 INFO L146 ILogger]: Start difference. First operand 356 states and 380 transitions. Second operand 37 states. [2019-05-23 11:26:16,422 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:16,422 INFO L146 ILogger]: Finished difference Result 579 states and 607 transitions. [2019-05-23 11:26:16,422 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2019-05-23 11:26:16,422 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 130 [2019-05-23 11:26:16,423 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:16,425 INFO L146 ILogger]: With dead ends: 579 [2019-05-23 11:26:16,425 INFO L146 ILogger]: Without dead ends: 577 [2019-05-23 11:26:16,428 INFO L146 ILogger]: 0 DeclaredPredicates, 215 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2645 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1420, Invalid=8282, Unknown=0, NotChecked=0, Total=9702 [2019-05-23 11:26:16,429 INFO L146 ILogger]: Start minimizeSevpa. Operand 577 states. [2019-05-23 11:26:16,440 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 577 to 191. [2019-05-23 11:26:16,440 INFO L146 ILogger]: Start removeUnreachable. Operand 191 states. [2019-05-23 11:26:16,441 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 191 states to 191 states and 201 transitions. [2019-05-23 11:26:16,441 INFO L146 ILogger]: Start accepts. Automaton has 191 states and 201 transitions. Word has length 130 [2019-05-23 11:26:16,441 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:16,441 INFO L146 ILogger]: Abstraction has 191 states and 201 transitions. [2019-05-23 11:26:16,441 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:26:16,442 INFO L146 ILogger]: Start isEmpty. Operand 191 states and 201 transitions. [2019-05-23 11:26:16,442 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:26:16,442 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:16,443 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:16,443 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:16,443 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:16,443 INFO L146 ILogger]: Analyzing trace with hash -1643322559, now seen corresponding path program 8 times [2019-05-23 11:26:16,443 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:16,443 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:16,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:16,444 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:16,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:16,458 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:16,855 INFO L146 ILogger]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:16,855 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:16,855 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:16,865 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:16,900 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:16,900 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:16,901 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:26:16,903 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:17,030 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:26:17,030 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,038 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:17,039 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,039 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:26:17,119 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:17,120 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2019-05-23 11:26:17,120 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,128 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:17,129 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,129 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:17,134 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:17,135 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2019-05-23 11:26:17,136 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,144 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:17,145 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,145 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:14 [2019-05-23 11:26:17,395 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:26:17,396 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,397 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:17,397 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:17,397 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:26:17,481 INFO L146 ILogger]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:17,501 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:17,501 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 38 [2019-05-23 11:26:17,501 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:26:17,501 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:26:17,502 INFO L146 ILogger]: CoverageRelationStatistics Valid=149, Invalid=1257, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:26:17,502 INFO L146 ILogger]: Start difference. First operand 191 states and 201 transitions. Second operand 38 states. [2019-05-23 11:26:19,439 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:19,440 INFO L146 ILogger]: Finished difference Result 301 states and 315 transitions. [2019-05-23 11:26:19,440 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:26:19,440 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 140 [2019-05-23 11:26:19,441 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:19,443 INFO L146 ILogger]: With dead ends: 301 [2019-05-23 11:26:19,443 INFO L146 ILogger]: Without dead ends: 299 [2019-05-23 11:26:19,444 INFO L146 ILogger]: 0 DeclaredPredicates, 190 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=527, Invalid=3763, Unknown=0, NotChecked=0, Total=4290 [2019-05-23 11:26:19,444 INFO L146 ILogger]: Start minimizeSevpa. Operand 299 states. [2019-05-23 11:26:19,456 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 299 to 221. [2019-05-23 11:26:19,457 INFO L146 ILogger]: Start removeUnreachable. Operand 221 states. [2019-05-23 11:26:19,457 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 221 states to 221 states and 234 transitions. [2019-05-23 11:26:19,457 INFO L146 ILogger]: Start accepts. Automaton has 221 states and 234 transitions. Word has length 140 [2019-05-23 11:26:19,458 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:19,458 INFO L146 ILogger]: Abstraction has 221 states and 234 transitions. [2019-05-23 11:26:19,458 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:26:19,458 INFO L146 ILogger]: Start isEmpty. Operand 221 states and 234 transitions. [2019-05-23 11:26:19,459 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:26:19,459 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:19,459 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:19,459 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:19,460 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:19,460 INFO L146 ILogger]: Analyzing trace with hash -831513695, now seen corresponding path program 3 times [2019-05-23 11:26:19,460 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:19,460 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:19,461 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:19,461 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:19,461 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:19,474 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:19,923 WARN L146 ILogger]: Spent 300.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-05-23 11:26:20,147 WARN L146 ILogger]: Spent 148.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2019-05-23 11:26:20,418 INFO L146 ILogger]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:20,418 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:20,418 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 11:26:20,428 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:20,466 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:26:20,466 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:20,468 INFO L146 ILogger]: Trace formula consists of 222 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:26:20,470 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:20,618 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:26:20,618 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,625 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:20,626 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,626 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2019-05-23 11:26:20,720 INFO L146 ILogger]: treesize reduction 33, result has 21.4 percent of original size [2019-05-23 11:26:20,720 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:26:20,721 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,728 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:20,728 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,729 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:16 [2019-05-23 11:26:20,755 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:20,756 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 26 treesize of output 57 [2019-05-23 11:26:20,757 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,777 INFO L146 ILogger]: treesize reduction 32, result has 46.7 percent of original size [2019-05-23 11:26:20,778 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,778 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:13 [2019-05-23 11:26:20,993 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:26:20,993 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,996 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:20,997 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,997 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2019-05-23 11:26:21,111 INFO L146 ILogger]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:21,130 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:21,131 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 40 [2019-05-23 11:26:21,131 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:26:21,131 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:26:21,132 INFO L146 ILogger]: CoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:26:21,132 INFO L146 ILogger]: Start difference. First operand 221 states and 234 transitions. Second operand 40 states. [2019-05-23 11:26:25,767 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:25,767 INFO L146 ILogger]: Finished difference Result 374 states and 389 transitions. [2019-05-23 11:26:25,767 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:26:25,768 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 140 [2019-05-23 11:26:25,768 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:25,769 INFO L146 ILogger]: With dead ends: 374 [2019-05-23 11:26:25,769 INFO L146 ILogger]: Without dead ends: 372 [2019-05-23 11:26:25,770 INFO L146 ILogger]: 0 DeclaredPredicates, 226 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2957 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1305, Invalid=9201, Unknown=0, NotChecked=0, Total=10506 [2019-05-23 11:26:25,771 INFO L146 ILogger]: Start minimizeSevpa. Operand 372 states. [2019-05-23 11:26:25,781 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 372 to 157. [2019-05-23 11:26:25,781 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:26:25,782 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 164 transitions. [2019-05-23 11:26:25,782 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 164 transitions. Word has length 140 [2019-05-23 11:26:25,782 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:25,782 INFO L146 ILogger]: Abstraction has 157 states and 164 transitions. [2019-05-23 11:26:25,782 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:26:25,783 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 164 transitions. [2019-05-23 11:26:25,783 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 151 [2019-05-23 11:26:25,783 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:25,784 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:25,784 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:25,784 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:25,784 INFO L146 ILogger]: Analyzing trace with hash -591637932, now seen corresponding path program 9 times [2019-05-23 11:26:25,784 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:25,784 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:25,785 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:25,785 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:25,785 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:25,800 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:26,189 INFO L146 ILogger]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:26,189 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:26,189 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 11:26:26,198 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:26,246 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:26:26,246 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:26,247 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:26:26,249 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:26,581 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:26:26,581 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,590 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:26,591 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,591 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:23 [2019-05-23 11:26:26,637 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:26,638 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-05-23 11:26:26,638 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,645 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:26,645 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,645 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:17 [2019-05-23 11:26:26,988 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:26:26,988 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,991 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:26,992 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:26,992 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-05-23 11:26:27,129 INFO L146 ILogger]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:27,148 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:27,148 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 43 [2019-05-23 11:26:27,148 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:26:27,149 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:26:27,149 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:26:27,149 INFO L146 ILogger]: Start difference. First operand 157 states and 164 transitions. Second operand 43 states.