java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_copy4_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:14:16,255 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:14:16,257 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:14:16,270 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:14:16,270 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:14:16,271 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:14:16,273 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:14:16,274 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:14:16,276 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:14:16,277 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:14:16,278 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:14:16,278 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:14:16,279 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:14:16,280 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:14:16,281 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:14:16,282 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:14:16,283 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:14:16,285 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:14:16,287 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:14:16,289 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:14:16,290 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:14:16,291 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:14:16,294 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:14:16,294 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:14:16,294 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:14:16,295 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:14:16,296 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:14:16,297 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:14:16,297 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:14:16,298 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:14:16,299 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:14:16,303 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:14:16,304 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:14:16,305 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:14:16,306 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:14:16,307 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:14:16,307 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:14:16,310 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:14:16,311 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:14:16,311 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:14:16,339 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:14:16,339 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:14:16,341 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:14:16,342 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:14:16,342 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:14:16,343 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:14:16,343 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:14:16,343 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:14:16,343 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:14:16,343 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:14:16,344 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:14:16,344 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:14:16,344 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:14:16,344 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:14:16,344 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:14:16,345 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:14:16,346 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:14:16,346 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:14:16,346 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:14:16,346 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:14:16,346 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:14:16,347 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:14:16,347 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:14:16,347 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:14:16,347 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:14:16,347 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:14:16,348 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:14:16,348 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:14:16,348 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 11:14:16,393 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:14:16,406 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:14:16,410 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:14:16,411 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:14:16,412 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:14:16,412 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy4_false-unreach-call_ground.i [2019-05-23 11:14:16,471 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/301ae517d/215ffd01da0a47e39a083086f4d30880/FLAGf20a8d8a3 [2019-05-23 11:14:16,922 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:14:16,923 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy4_false-unreach-call_ground.i [2019-05-23 11:14:16,929 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/301ae517d/215ffd01da0a47e39a083086f4d30880/FLAGf20a8d8a3 [2019-05-23 11:14:17,293 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/301ae517d/215ffd01da0a47e39a083086f4d30880 [2019-05-23 11:14:17,303 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:14:17,305 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:14:17,306 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,306 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:14:17,309 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:14:17,310 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,313 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ff6cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17, skipping insertion in model container [2019-05-23 11:14:17,313 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,320 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:14:17,338 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:14:17,522 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,530 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:14:17,560 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,579 INFO L146 ILogger]: Completed translation [2019-05-23 11:14:17,579 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17 WrapperNode [2019-05-23 11:14:17,579 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,580 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,581 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:14:17,581 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:14:17,591 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,602 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,630 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,631 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,631 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:14:17,631 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:14:17,641 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,641 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,644 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,644 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,751 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,760 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,762 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,764 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,765 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:14:17,765 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:14:17,765 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:14:17,766 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (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 11:14:17,823 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:14:17,823 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:14:17,823 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:14:17,823 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:14:17,823 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:14:17,824 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:14:18,396 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:14:18,397 INFO L146 ILogger]: Removed 12 assume(true) statements. [2019-05-23 11:14:18,398 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18 BoogieIcfgContainer [2019-05-23 11:14:18,398 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:14:18,399 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:14:18,399 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:14:18,402 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:14:18,403 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:14:17" (1/3) ... [2019-05-23 11:14:18,403 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c86aeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:18, skipping insertion in model container [2019-05-23 11:14:18,404 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (2/3) ... [2019-05-23 11:14:18,404 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c86aeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:18, skipping insertion in model container [2019-05-23 11:14:18,404 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18" (3/3) ... [2019-05-23 11:14:18,406 INFO L146 ILogger]: Analyzing ICFG standard_copy4_false-unreach-call_ground.i [2019-05-23 11:14:18,415 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:14:18,423 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:14:18,438 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:14:18,470 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:14:18,470 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:14:18,470 INFO L146 ILogger]: Hoare is true [2019-05-23 11:14:18,470 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:14:18,471 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:14:18,471 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:14:18,471 INFO L146 ILogger]: Difference is false [2019-05-23 11:14:18,471 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:14:18,472 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:14:18,489 INFO L146 ILogger]: Start isEmpty. Operand 84 states. [2019-05-23 11:14:18,497 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:14:18,497 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,498 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] [2019-05-23 11:14:18,501 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,506 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,507 INFO L146 ILogger]: Analyzing trace with hash -222356876, now seen corresponding path program 1 times [2019-05-23 11:14:18,509 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,509 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,562 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,562 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,562 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,613 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,692 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 11:14:18,695 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:18,698 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:14:18,701 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:14:18,712 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:14:18,713 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:18,715 INFO L146 ILogger]: Start difference. First operand 84 states. Second operand 3 states. [2019-05-23 11:14:18,867 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:18,867 INFO L146 ILogger]: Finished difference Result 156 states and 180 transitions. [2019-05-23 11:14:18,871 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:14:18,872 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 31 [2019-05-23 11:14:18,873 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:18,889 INFO L146 ILogger]: With dead ends: 156 [2019-05-23 11:14:18,889 INFO L146 ILogger]: Without dead ends: 79 [2019-05-23 11:14:18,893 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:18,917 INFO L146 ILogger]: Start minimizeSevpa. Operand 79 states. [2019-05-23 11:14:18,943 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 79 to 71. [2019-05-23 11:14:18,945 INFO L146 ILogger]: Start removeUnreachable. Operand 71 states. [2019-05-23 11:14:18,946 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2019-05-23 11:14:18,950 INFO L146 ILogger]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 31 [2019-05-23 11:14:18,950 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:18,950 INFO L146 ILogger]: Abstraction has 71 states and 76 transitions. [2019-05-23 11:14:18,950 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:14:18,951 INFO L146 ILogger]: Start isEmpty. Operand 71 states and 76 transitions. [2019-05-23 11:14:18,952 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:14:18,953 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,953 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] [2019-05-23 11:14:18,953 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,954 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,955 INFO L146 ILogger]: Analyzing trace with hash 1480826521, now seen corresponding path program 1 times [2019-05-23 11:14:18,956 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,956 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,958 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,958 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,958 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,011 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,169 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 11:14:19,170 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,170 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:14:19,183 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,234 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,236 INFO L146 ILogger]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:14:19,243 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:19,328 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:14:19,351 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:14:19,351 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:14:19,352 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:14:19,352 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:14:19,353 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:14:19,353 INFO L146 ILogger]: Start difference. First operand 71 states and 76 transitions. Second operand 6 states. [2019-05-23 11:14:19,813 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,813 INFO L146 ILogger]: Finished difference Result 162 states and 176 transitions. [2019-05-23 11:14:19,816 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:14:19,816 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 41 [2019-05-23 11:14:19,816 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,818 INFO L146 ILogger]: With dead ends: 162 [2019-05-23 11:14:19,818 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:14:19,819 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:14:19,820 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:14:19,828 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 85. [2019-05-23 11:14:19,828 INFO L146 ILogger]: Start removeUnreachable. Operand 85 states. [2019-05-23 11:14:19,830 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2019-05-23 11:14:19,830 INFO L146 ILogger]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 41 [2019-05-23 11:14:19,831 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,831 INFO L146 ILogger]: Abstraction has 85 states and 90 transitions. [2019-05-23 11:14:19,831 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:14:19,831 INFO L146 ILogger]: Start isEmpty. Operand 85 states and 90 transitions. [2019-05-23 11:14:19,834 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:14:19,834 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,834 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:19,835 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,835 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,835 INFO L146 ILogger]: Analyzing trace with hash -595021203, now seen corresponding path program 1 times [2019-05-23 11:14:19,835 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,836 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,837 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,837 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,837 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,863 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,955 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:14:19,957 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,957 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 11:14:19,976 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,026 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,027 INFO L146 ILogger]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:20,031 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:20,431 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-05-23 11:14:20,461 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:20,461 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:14:20,462 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:14:20,462 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:14:20,463 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:14:20,463 INFO L146 ILogger]: Start difference. First operand 85 states and 90 transitions. Second operand 10 states. [2019-05-23 11:14:20,923 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:20,923 INFO L146 ILogger]: Finished difference Result 183 states and 194 transitions. [2019-05-23 11:14:20,927 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:14:20,927 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 79 [2019-05-23 11:14:20,927 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:20,929 INFO L146 ILogger]: With dead ends: 183 [2019-05-23 11:14:20,929 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:14:20,932 INFO L146 ILogger]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:20,933 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:14:20,946 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 102. [2019-05-23 11:14:20,946 INFO L146 ILogger]: Start removeUnreachable. Operand 102 states. [2019-05-23 11:14:20,949 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2019-05-23 11:14:20,949 INFO L146 ILogger]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 79 [2019-05-23 11:14:20,950 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:20,950 INFO L146 ILogger]: Abstraction has 102 states and 107 transitions. [2019-05-23 11:14:20,950 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:14:20,950 INFO L146 ILogger]: Start isEmpty. Operand 102 states and 107 transitions. [2019-05-23 11:14:20,953 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 97 [2019-05-23 11:14:20,953 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:20,953 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:20,955 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:20,955 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:20,956 INFO L146 ILogger]: Analyzing trace with hash 1666114971, now seen corresponding path program 2 times [2019-05-23 11:14:20,956 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:20,956 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:20,957 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,957 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,957 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,988 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,085 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-05-23 11:14:21,085 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:21,086 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 11:14:21,095 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:21,147 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:21,147 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,149 INFO L146 ILogger]: Trace formula consists of 174 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:21,153 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:21,361 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:14:21,380 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:21,380 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:14:21,381 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:14:21,381 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:14:21,382 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:14:21,382 INFO L146 ILogger]: Start difference. First operand 102 states and 107 transitions. Second operand 12 states. [2019-05-23 11:14:22,206 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:22,206 INFO L146 ILogger]: Finished difference Result 202 states and 213 transitions. [2019-05-23 11:14:22,206 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:14:22,207 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 96 [2019-05-23 11:14:22,207 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:22,209 INFO L146 ILogger]: With dead ends: 202 [2019-05-23 11:14:22,209 INFO L146 ILogger]: Without dead ends: 142 [2019-05-23 11:14:22,210 INFO L146 ILogger]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:14:22,210 INFO L146 ILogger]: Start minimizeSevpa. Operand 142 states. [2019-05-23 11:14:22,218 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 142 to 119. [2019-05-23 11:14:22,218 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:14:22,222 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2019-05-23 11:14:22,222 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 96 [2019-05-23 11:14:22,223 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:22,223 INFO L146 ILogger]: Abstraction has 119 states and 124 transitions. [2019-05-23 11:14:22,223 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:14:22,223 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 124 transitions. [2019-05-23 11:14:22,225 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:14:22,225 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:22,225 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:22,226 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:22,226 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:22,226 INFO L146 ILogger]: Analyzing trace with hash -516356686, now seen corresponding path program 3 times [2019-05-23 11:14:22,226 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:22,227 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:22,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,228 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:22,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,254 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,397 INFO L146 ILogger]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-05-23 11:14:22,397 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:22,397 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 11:14:22,411 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:22,459 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:14:22,459 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,460 INFO L146 ILogger]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:14:22,464 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:22,713 INFO L146 ILogger]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-05-23 11:14:22,745 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:22,745 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:14:22,746 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:14:22,746 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:14:22,747 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:22,747 INFO L146 ILogger]: Start difference. First operand 119 states and 124 transitions. Second operand 7 states. [2019-05-23 11:14:22,976 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:22,976 INFO L146 ILogger]: Finished difference Result 161 states and 168 transitions. [2019-05-23 11:14:22,976 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:14:22,977 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 113 [2019-05-23 11:14:22,977 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:22,978 INFO L146 ILogger]: With dead ends: 161 [2019-05-23 11:14:22,978 INFO L146 ILogger]: Without dead ends: 136 [2019-05-23 11:14:22,979 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:22,980 INFO L146 ILogger]: Start minimizeSevpa. Operand 136 states. [2019-05-23 11:14:22,987 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 136 to 126. [2019-05-23 11:14:22,987 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:14:22,990 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2019-05-23 11:14:22,990 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 113 [2019-05-23 11:14:22,991 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:22,991 INFO L146 ILogger]: Abstraction has 126 states and 131 transitions. [2019-05-23 11:14:22,991 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:14:22,991 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 131 transitions. [2019-05-23 11:14:22,996 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:14:22,996 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:22,996 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:22,997 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:22,997 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:22,997 INFO L146 ILogger]: Analyzing trace with hash 173939676, now seen corresponding path program 4 times [2019-05-23 11:14:22,997 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:22,997 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,000 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,000 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:23,000 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,044 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,211 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-05-23 11:14:23,211 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:23,212 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 11:14:23,224 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:23,411 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:23,412 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,413 INFO L146 ILogger]: Trace formula consists of 208 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:14:23,417 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,590 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:14:23,609 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:23,609 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2019-05-23 11:14:23,610 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:14:23,610 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:14:23,610 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:14:23,611 INFO L146 ILogger]: Start difference. First operand 126 states and 131 transitions. Second operand 14 states. [2019-05-23 11:14:24,211 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:24,211 INFO L146 ILogger]: Finished difference Result 230 states and 241 transitions. [2019-05-23 11:14:24,215 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:14:24,215 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 120 [2019-05-23 11:14:24,216 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:24,217 INFO L146 ILogger]: With dead ends: 230 [2019-05-23 11:14:24,217 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:14:24,218 INFO L146 ILogger]: 0 DeclaredPredicates, 134 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:14:24,219 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:14:24,224 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 143. [2019-05-23 11:14:24,224 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:14:24,225 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 148 transitions. [2019-05-23 11:14:24,225 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 148 transitions. Word has length 120 [2019-05-23 11:14:24,226 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:24,226 INFO L146 ILogger]: Abstraction has 143 states and 148 transitions. [2019-05-23 11:14:24,226 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:14:24,226 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 148 transitions. [2019-05-23 11:14:24,228 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:14:24,228 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:24,228 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 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, 1] [2019-05-23 11:14:24,228 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:24,229 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:24,229 INFO L146 ILogger]: Analyzing trace with hash -105358735, now seen corresponding path program 5 times [2019-05-23 11:14:24,229 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:24,229 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:24,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,230 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:24,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,256 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,599 INFO L146 ILogger]: Checked inductivity of 141 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:14:24,600 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:24,600 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 11:14:24,609 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:25,323 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:14:25,323 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:25,325 INFO L146 ILogger]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:25,330 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:25,429 INFO L146 ILogger]: Checked inductivity of 141 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-05-23 11:14:25,449 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:25,449 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2019-05-23 11:14:25,450 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:14:25,450 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:14:25,450 INFO L146 ILogger]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:14:25,451 INFO L146 ILogger]: Start difference. First operand 143 states and 148 transitions. Second operand 18 states. [2019-05-23 11:14:26,219 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:26,220 INFO L146 ILogger]: Finished difference Result 254 states and 265 transitions. [2019-05-23 11:14:26,220 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:14:26,220 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 137 [2019-05-23 11:14:26,221 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:26,222 INFO L146 ILogger]: With dead ends: 254 [2019-05-23 11:14:26,222 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:14:26,224 INFO L146 ILogger]: 0 DeclaredPredicates, 163 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:14:26,225 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:14:26,230 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 160. [2019-05-23 11:14:26,230 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:14:26,231 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 165 transitions. [2019-05-23 11:14:26,231 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 165 transitions. Word has length 137 [2019-05-23 11:14:26,231 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:26,231 INFO L146 ILogger]: Abstraction has 160 states and 165 transitions. [2019-05-23 11:14:26,231 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:14:26,231 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 165 transitions. [2019-05-23 11:14:26,233 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 155 [2019-05-23 11:14:26,233 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:26,234 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 11:14:26,234 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:26,234 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:26,234 INFO L146 ILogger]: Analyzing trace with hash 997256891, now seen corresponding path program 6 times [2019-05-23 11:14:26,234 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:26,235 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:26,235 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,236 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:26,236 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,259 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,417 INFO L146 ILogger]: Checked inductivity of 207 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:14:26,418 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:26,418 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:14:26,426 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:26,527 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:14:26,528 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,529 INFO L146 ILogger]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:26,531 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:26,669 INFO L146 ILogger]: Checked inductivity of 207 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-05-23 11:14:26,688 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:26,688 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2019-05-23 11:14:26,688 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:14:26,689 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:14:26,689 INFO L146 ILogger]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:14:26,689 INFO L146 ILogger]: Start difference. First operand 160 states and 165 transitions. Second operand 20 states. [2019-05-23 11:14:27,274 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:27,275 INFO L146 ILogger]: Finished difference Result 278 states and 289 transitions. [2019-05-23 11:14:27,275 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:14:27,276 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 154 [2019-05-23 11:14:27,276 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:27,277 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:14:27,277 INFO L146 ILogger]: Without dead ends: 190 [2019-05-23 11:14:27,278 INFO L146 ILogger]: 0 DeclaredPredicates, 184 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:14:27,279 INFO L146 ILogger]: Start minimizeSevpa. Operand 190 states. [2019-05-23 11:14:27,284 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 190 to 177. [2019-05-23 11:14:27,284 INFO L146 ILogger]: Start removeUnreachable. Operand 177 states. [2019-05-23 11:14:27,285 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 177 states to 177 states and 182 transitions. [2019-05-23 11:14:27,285 INFO L146 ILogger]: Start accepts. Automaton has 177 states and 182 transitions. Word has length 154 [2019-05-23 11:14:27,285 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:27,285 INFO L146 ILogger]: Abstraction has 177 states and 182 transitions. [2019-05-23 11:14:27,285 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:14:27,286 INFO L146 ILogger]: Start isEmpty. Operand 177 states and 182 transitions. [2019-05-23 11:14:27,287 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 172 [2019-05-23 11:14:27,288 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:27,288 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2019-05-23 11:14:27,288 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:27,288 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:27,289 INFO L146 ILogger]: Analyzing trace with hash 554188082, now seen corresponding path program 7 times [2019-05-23 11:14:27,289 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:27,289 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:27,290 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,290 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:27,290 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,312 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,541 INFO L146 ILogger]: Checked inductivity of 283 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:14:27,542 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:27,542 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 11:14:27,550 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:27,594 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,595 INFO L146 ILogger]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:14:27,597 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:27,678 INFO L146 ILogger]: Checked inductivity of 283 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:14:27,700 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:27,700 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:14:27,701 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:14:27,701 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:14:27,701 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:14:27,702 INFO L146 ILogger]: Start difference. First operand 177 states and 182 transitions. Second operand 19 states. [2019-05-23 11:14:28,075 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:28,076 INFO L146 ILogger]: Finished difference Result 290 states and 300 transitions. [2019-05-23 11:14:28,077 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:14:28,077 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 171 [2019-05-23 11:14:28,077 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:28,078 INFO L146 ILogger]: With dead ends: 290 [2019-05-23 11:14:28,078 INFO L146 ILogger]: Without dead ends: 195 [2019-05-23 11:14:28,079 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:28,080 INFO L146 ILogger]: Start minimizeSevpa. Operand 195 states. [2019-05-23 11:14:28,083 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 195 to 187. [2019-05-23 11:14:28,084 INFO L146 ILogger]: Start removeUnreachable. Operand 187 states. [2019-05-23 11:14:28,084 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 187 states to 187 states and 192 transitions. [2019-05-23 11:14:28,085 INFO L146 ILogger]: Start accepts. Automaton has 187 states and 192 transitions. Word has length 171 [2019-05-23 11:14:28,085 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:28,085 INFO L146 ILogger]: Abstraction has 187 states and 192 transitions. [2019-05-23 11:14:28,085 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:14:28,085 INFO L146 ILogger]: Start isEmpty. Operand 187 states and 192 transitions. [2019-05-23 11:14:28,087 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 182 [2019-05-23 11:14:28,087 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:28,087 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2019-05-23 11:14:28,088 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:28,088 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:28,088 INFO L146 ILogger]: Analyzing trace with hash 938879672, now seen corresponding path program 8 times [2019-05-23 11:14:28,088 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:28,088 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:28,089 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,089 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:28,089 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,110 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,372 INFO L146 ILogger]: Checked inductivity of 354 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:14:28,372 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:28,372 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 11:14:28,381 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:28,426 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:28,426 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,428 INFO L146 ILogger]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:14:28,430 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:28,495 INFO L146 ILogger]: Checked inductivity of 354 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:14:28,518 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:28,518 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:14:28,518 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:14:28,519 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:14:28,519 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:28,519 INFO L146 ILogger]: Start difference. First operand 187 states and 192 transitions. Second operand 21 states. [2019-05-23 11:14:28,999 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:28,999 INFO L146 ILogger]: Finished difference Result 300 states and 310 transitions. [2019-05-23 11:14:29,000 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:14:29,000 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 181 [2019-05-23 11:14:29,000 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:29,001 INFO L146 ILogger]: With dead ends: 300 [2019-05-23 11:14:29,001 INFO L146 ILogger]: Without dead ends: 205 [2019-05-23 11:14:29,002 INFO L146 ILogger]: 0 DeclaredPredicates, 215 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:14:29,002 INFO L146 ILogger]: Start minimizeSevpa. Operand 205 states. [2019-05-23 11:14:29,006 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 205 to 197. [2019-05-23 11:14:29,006 INFO L146 ILogger]: Start removeUnreachable. Operand 197 states. [2019-05-23 11:14:29,007 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 197 states to 197 states and 202 transitions. [2019-05-23 11:14:29,007 INFO L146 ILogger]: Start accepts. Automaton has 197 states and 202 transitions. Word has length 181 [2019-05-23 11:14:29,007 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:29,007 INFO L146 ILogger]: Abstraction has 197 states and 202 transitions. [2019-05-23 11:14:29,008 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:14:29,008 INFO L146 ILogger]: Start isEmpty. Operand 197 states and 202 transitions. [2019-05-23 11:14:29,010 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 192 [2019-05-23 11:14:29,010 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:29,010 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2019-05-23 11:14:29,010 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:29,011 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:29,011 INFO L146 ILogger]: Analyzing trace with hash -204117826, now seen corresponding path program 9 times [2019-05-23 11:14:29,011 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:29,011 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:29,012 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,012 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:29,012 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,034 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,404 INFO L146 ILogger]: Checked inductivity of 435 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:14:29,404 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:29,404 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 11:14:29,414 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:29,476 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:14:29,477 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,478 INFO L146 ILogger]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:29,480 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:29,705 INFO L146 ILogger]: Checked inductivity of 435 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2019-05-23 11:14:29,725 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:29,725 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7] total 26 [2019-05-23 11:14:29,725 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:14:29,726 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:14:29,726 INFO L146 ILogger]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:14:29,726 INFO L146 ILogger]: Start difference. First operand 197 states and 202 transitions. Second operand 26 states. [2019-05-23 11:14:30,467 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:30,467 INFO L146 ILogger]: Finished difference Result 322 states and 333 transitions. [2019-05-23 11:14:30,468 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:14:30,468 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 191 [2019-05-23 11:14:30,469 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:30,470 INFO L146 ILogger]: With dead ends: 322 [2019-05-23 11:14:30,471 INFO L146 ILogger]: Without dead ends: 227 [2019-05-23 11:14:30,472 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=540, Invalid=1716, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:14:30,473 INFO L146 ILogger]: Start minimizeSevpa. Operand 227 states. [2019-05-23 11:14:30,477 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 227 to 214. [2019-05-23 11:14:30,477 INFO L146 ILogger]: Start removeUnreachable. Operand 214 states. [2019-05-23 11:14:30,477 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 214 states to 214 states and 219 transitions. [2019-05-23 11:14:30,478 INFO L146 ILogger]: Start accepts. Automaton has 214 states and 219 transitions. Word has length 191 [2019-05-23 11:14:30,478 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:30,478 INFO L146 ILogger]: Abstraction has 214 states and 219 transitions. [2019-05-23 11:14:30,478 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:14:30,478 INFO L146 ILogger]: Start isEmpty. Operand 214 states and 219 transitions. [2019-05-23 11:14:30,480 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:14:30,480 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:30,481 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:30,481 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:30,481 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:30,481 INFO L146 ILogger]: Analyzing trace with hash -266712559, now seen corresponding path program 10 times [2019-05-23 11:14:30,481 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:30,482 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:30,482 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:30,482 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:30,483 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:30,505 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,838 INFO L146 ILogger]: Checked inductivity of 541 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:14:30,838 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:30,838 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 11:14:30,848 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:31,961 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:31,962 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:31,966 INFO L146 ILogger]: Trace formula consists of 332 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:14:31,970 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:32,084 INFO L146 ILogger]: Checked inductivity of 541 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:14:32,104 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:32,105 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:14:32,106 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:14:32,106 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:14:32,106 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:14:32,106 INFO L146 ILogger]: Start difference. First operand 214 states and 219 transitions. Second operand 25 states. [2019-05-23 11:14:32,714 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:32,714 INFO L146 ILogger]: Finished difference Result 334 states and 344 transitions. [2019-05-23 11:14:32,715 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:14:32,715 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 208 [2019-05-23 11:14:32,715 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:32,717 INFO L146 ILogger]: With dead ends: 334 [2019-05-23 11:14:32,717 INFO L146 ILogger]: Without dead ends: 232 [2019-05-23 11:14:32,718 INFO L146 ILogger]: 0 DeclaredPredicates, 250 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:14:32,718 INFO L146 ILogger]: Start minimizeSevpa. Operand 232 states. [2019-05-23 11:14:32,722 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 232 to 224. [2019-05-23 11:14:32,722 INFO L146 ILogger]: Start removeUnreachable. Operand 224 states. [2019-05-23 11:14:32,723 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 224 states to 224 states and 229 transitions. [2019-05-23 11:14:32,723 INFO L146 ILogger]: Start accepts. Automaton has 224 states and 229 transitions. Word has length 208 [2019-05-23 11:14:32,723 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:32,723 INFO L146 ILogger]: Abstraction has 224 states and 229 transitions. [2019-05-23 11:14:32,724 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:14:32,724 INFO L146 ILogger]: Start isEmpty. Operand 224 states and 229 transitions. [2019-05-23 11:14:32,725 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 219 [2019-05-23 11:14:32,725 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:32,725 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:32,725 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:32,726 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:32,726 INFO L146 ILogger]: Analyzing trace with hash 92960843, now seen corresponding path program 11 times [2019-05-23 11:14:32,726 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:32,726 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:32,727 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:32,727 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:32,727 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:32,756 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:33,705 INFO L146 ILogger]: Checked inductivity of 642 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:14:33,705 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:33,706 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 11:14:33,715 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:52,347 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:14:52,347 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:52,360 INFO L146 ILogger]: Trace formula consists of 346 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:52,363 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:52,501 INFO L146 ILogger]: Checked inductivity of 642 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2019-05-23 11:14:52,524 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:52,524 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9] total 32 [2019-05-23 11:14:52,524 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:14:52,525 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:14:52,525 INFO L146 ILogger]: CoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:14:52,525 INFO L146 ILogger]: Start difference. First operand 224 states and 229 transitions. Second operand 32 states. [2019-05-23 11:14:53,865 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:53,865 INFO L146 ILogger]: Finished difference Result 356 states and 367 transitions. [2019-05-23 11:14:53,866 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:14:53,866 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 218 [2019-05-23 11:14:53,866 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:53,868 INFO L146 ILogger]: With dead ends: 356 [2019-05-23 11:14:53,868 INFO L146 ILogger]: Without dead ends: 254 [2019-05-23 11:14:53,870 INFO L146 ILogger]: 0 DeclaredPredicates, 270 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=795, Invalid=2745, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:14:53,870 INFO L146 ILogger]: Start minimizeSevpa. Operand 254 states. [2019-05-23 11:14:53,874 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 254 to 241. [2019-05-23 11:14:53,874 INFO L146 ILogger]: Start removeUnreachable. Operand 241 states. [2019-05-23 11:14:53,875 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 241 states to 241 states and 246 transitions. [2019-05-23 11:14:53,875 INFO L146 ILogger]: Start accepts. Automaton has 241 states and 246 transitions. Word has length 218 [2019-05-23 11:14:53,875 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:53,875 INFO L146 ILogger]: Abstraction has 241 states and 246 transitions. [2019-05-23 11:14:53,876 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:14:53,876 INFO L146 ILogger]: Start isEmpty. Operand 241 states and 246 transitions. [2019-05-23 11:14:53,877 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 236 [2019-05-23 11:14:53,877 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:53,877 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:53,878 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:53,878 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:53,878 INFO L146 ILogger]: Analyzing trace with hash -1399807582, now seen corresponding path program 12 times [2019-05-23 11:14:53,878 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:53,878 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:53,879 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:53,879 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:53,879 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:53,903 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:54,370 INFO L146 ILogger]: Checked inductivity of 775 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-05-23 11:14:54,370 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:54,370 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 11:14:54,379 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:54,480 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:14:54,480 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:54,484 INFO L146 ILogger]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:54,487 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:54,602 INFO L146 ILogger]: Checked inductivity of 775 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2019-05-23 11:14:54,622 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:54,622 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 7] total 32 [2019-05-23 11:14:54,622 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:14:54,623 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:14:54,623 INFO L146 ILogger]: CoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:14:54,623 INFO L146 ILogger]: Start difference. First operand 241 states and 246 transitions. Second operand 32 states. [2019-05-23 11:14:57,083 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:57,084 INFO L146 ILogger]: Finished difference Result 380 states and 391 transitions. [2019-05-23 11:14:57,084 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:14:57,084 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 235 [2019-05-23 11:14:57,084 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:57,085 INFO L146 ILogger]: With dead ends: 380 [2019-05-23 11:14:57,086 INFO L146 ILogger]: Without dead ends: 271 [2019-05-23 11:14:57,088 INFO L146 ILogger]: 0 DeclaredPredicates, 289 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=885, Invalid=2655, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:14:57,088 INFO L146 ILogger]: Start minimizeSevpa. Operand 271 states. [2019-05-23 11:14:57,092 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 271 to 258. [2019-05-23 11:14:57,092 INFO L146 ILogger]: Start removeUnreachable. Operand 258 states. [2019-05-23 11:14:57,093 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 258 states to 258 states and 263 transitions. [2019-05-23 11:14:57,093 INFO L146 ILogger]: Start accepts. Automaton has 258 states and 263 transitions. Word has length 235 [2019-05-23 11:14:57,093 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:57,093 INFO L146 ILogger]: Abstraction has 258 states and 263 transitions. [2019-05-23 11:14:57,093 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:14:57,093 INFO L146 ILogger]: Start isEmpty. Operand 258 states and 263 transitions. [2019-05-23 11:14:57,094 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 253 [2019-05-23 11:14:57,094 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:57,095 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 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 11:14:57,095 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:57,095 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:57,095 INFO L146 ILogger]: Analyzing trace with hash -1472680200, now seen corresponding path program 13 times [2019-05-23 11:14:57,095 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:57,095 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:57,096 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:57,096 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:57,096 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:57,119 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,593 INFO L146 ILogger]: Checked inductivity of 911 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:14:57,594 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:57,594 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 11:14:57,602 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:57,662 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,663 INFO L146 ILogger]: Trace formula consists of 394 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:14:57,668 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:57,794 INFO L146 ILogger]: Checked inductivity of 911 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:14:57,817 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:57,818 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:14:57,818 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:14:57,819 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:14:57,819 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:14:57,819 INFO L146 ILogger]: Start difference. First operand 258 states and 263 transitions. Second operand 31 states. [2019-05-23 11:14:58,520 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:58,521 INFO L146 ILogger]: Finished difference Result 392 states and 402 transitions. [2019-05-23 11:14:58,522 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:14:58,522 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 252 [2019-05-23 11:14:58,523 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:58,523 INFO L146 ILogger]: With dead ends: 392 [2019-05-23 11:14:58,524 INFO L146 ILogger]: Without dead ends: 276 [2019-05-23 11:14:58,525 INFO L146 ILogger]: 0 DeclaredPredicates, 306 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:14:58,525 INFO L146 ILogger]: Start minimizeSevpa. Operand 276 states. [2019-05-23 11:14:58,530 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 276 to 268. [2019-05-23 11:14:58,531 INFO L146 ILogger]: Start removeUnreachable. Operand 268 states. [2019-05-23 11:14:58,531 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 268 states to 268 states and 273 transitions. [2019-05-23 11:14:58,532 INFO L146 ILogger]: Start accepts. Automaton has 268 states and 273 transitions. Word has length 252 [2019-05-23 11:14:58,532 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:58,532 INFO L146 ILogger]: Abstraction has 268 states and 273 transitions. [2019-05-23 11:14:58,532 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:14:58,532 INFO L146 ILogger]: Start isEmpty. Operand 268 states and 273 transitions. [2019-05-23 11:14:58,533 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 263 [2019-05-23 11:14:58,534 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:58,534 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 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 11:14:58,534 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:58,534 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:58,534 INFO L146 ILogger]: Analyzing trace with hash 1091038770, now seen corresponding path program 14 times [2019-05-23 11:14:58,535 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:58,535 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:58,535 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:58,536 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:58,536 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:58,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:59,274 INFO L146 ILogger]: Checked inductivity of 1042 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:14:59,275 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:59,275 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 11:14:59,284 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:59,363 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:59,363 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:59,365 INFO L146 ILogger]: Trace formula consists of 408 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:14:59,369 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:59,482 INFO L146 ILogger]: Checked inductivity of 1042 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:14:59,501 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:59,502 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:14:59,502 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:14:59,502 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:14:59,503 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:59,503 INFO L146 ILogger]: Start difference. First operand 268 states and 273 transitions. Second operand 33 states. [2019-05-23 11:15:00,261 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:00,262 INFO L146 ILogger]: Finished difference Result 402 states and 412 transitions. [2019-05-23 11:15:00,266 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:15:00,266 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 262 [2019-05-23 11:15:00,267 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:00,268 INFO L146 ILogger]: With dead ends: 402 [2019-05-23 11:15:00,268 INFO L146 ILogger]: Without dead ends: 286 [2019-05-23 11:15:00,271 INFO L146 ILogger]: 0 DeclaredPredicates, 320 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:15:00,272 INFO L146 ILogger]: Start minimizeSevpa. Operand 286 states. [2019-05-23 11:15:00,276 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 286 to 278. [2019-05-23 11:15:00,276 INFO L146 ILogger]: Start removeUnreachable. Operand 278 states. [2019-05-23 11:15:00,277 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 278 states to 278 states and 283 transitions. [2019-05-23 11:15:00,277 INFO L146 ILogger]: Start accepts. Automaton has 278 states and 283 transitions. Word has length 262 [2019-05-23 11:15:00,277 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:00,277 INFO L146 ILogger]: Abstraction has 278 states and 283 transitions. [2019-05-23 11:15:00,277 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:15:00,278 INFO L146 ILogger]: Start isEmpty. Operand 278 states and 283 transitions. [2019-05-23 11:15:00,280 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 273 [2019-05-23 11:15:00,280 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:00,280 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 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 11:15:00,281 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:00,281 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:00,281 INFO L146 ILogger]: Analyzing trace with hash 1726278892, now seen corresponding path program 15 times [2019-05-23 11:15:00,281 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:00,281 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:00,282 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:00,282 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:00,282 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:00,310 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:01,410 INFO L146 ILogger]: Checked inductivity of 1183 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:15:01,410 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:01,410 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 11:15:01,419 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:01,568 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:15:01,568 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:01,569 INFO L146 ILogger]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:15:01,573 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:02,813 INFO L146 ILogger]: Checked inductivity of 1183 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2019-05-23 11:15:02,837 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:02,837 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9] total 40 [2019-05-23 11:15:02,837 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:15:02,838 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:15:02,839 INFO L146 ILogger]: CoverageRelationStatistics Valid=311, Invalid=1249, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:15:02,839 INFO L146 ILogger]: Start difference. First operand 278 states and 283 transitions. Second operand 40 states. [2019-05-23 11:15:04,864 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:04,865 INFO L146 ILogger]: Finished difference Result 424 states and 435 transitions. [2019-05-23 11:15:04,865 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-05-23 11:15:04,865 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 272 [2019-05-23 11:15:04,866 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:04,867 INFO L146 ILogger]: With dead ends: 424 [2019-05-23 11:15:04,867 INFO L146 ILogger]: Without dead ends: 308 [2019-05-23 11:15:04,871 INFO L146 ILogger]: 0 DeclaredPredicates, 340 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1355, Invalid=4345, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:15:04,871 INFO L146 ILogger]: Start minimizeSevpa. Operand 308 states. [2019-05-23 11:15:04,876 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 308 to 295. [2019-05-23 11:15:04,876 INFO L146 ILogger]: Start removeUnreachable. Operand 295 states. [2019-05-23 11:15:04,877 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 295 states to 295 states and 300 transitions. [2019-05-23 11:15:04,877 INFO L146 ILogger]: Start accepts. Automaton has 295 states and 300 transitions. Word has length 272 [2019-05-23 11:15:04,877 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:04,877 INFO L146 ILogger]: Abstraction has 295 states and 300 transitions. [2019-05-23 11:15:04,877 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:15:04,877 INFO L146 ILogger]: Start isEmpty. Operand 295 states and 300 transitions. [2019-05-23 11:15:04,879 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 290 [2019-05-23 11:15:04,879 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:04,879 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:04,880 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:04,880 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:04,880 INFO L146 ILogger]: Analyzing trace with hash -878843590, now seen corresponding path program 16 times [2019-05-23 11:15:04,880 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:04,880 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:04,881 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:04,881 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:04,881 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:04,906 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:05,449 INFO L146 ILogger]: Checked inductivity of 1356 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2019-05-23 11:15:05,449 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:05,449 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 11:15:05,458 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:17,555 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:17,555 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:17,563 INFO L146 ILogger]: Trace formula consists of 446 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:15:17,566 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:17,659 INFO L146 ILogger]: Checked inductivity of 1356 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2019-05-23 11:15:17,681 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:17,682 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-05-23 11:15:17,682 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:15:17,683 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:15:17,683 INFO L146 ILogger]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:15:17,683 INFO L146 ILogger]: Start difference. First operand 295 states and 300 transitions. Second operand 37 states. [2019-05-23 11:15:18,795 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:18,795 INFO L146 ILogger]: Finished difference Result 436 states and 446 transitions. [2019-05-23 11:15:18,796 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:15:18,796 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 289 [2019-05-23 11:15:18,796 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:18,798 INFO L146 ILogger]: With dead ends: 436 [2019-05-23 11:15:18,798 INFO L146 ILogger]: Without dead ends: 313 [2019-05-23 11:15:18,800 INFO L146 ILogger]: 0 DeclaredPredicates, 355 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:15:18,800 INFO L146 ILogger]: Start minimizeSevpa. Operand 313 states. [2019-05-23 11:15:18,805 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 313 to 305. [2019-05-23 11:15:18,805 INFO L146 ILogger]: Start removeUnreachable. Operand 305 states. [2019-05-23 11:15:18,805 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 305 states to 305 states and 310 transitions. [2019-05-23 11:15:18,806 INFO L146 ILogger]: Start accepts. Automaton has 305 states and 310 transitions. Word has length 289 [2019-05-23 11:15:18,806 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:18,806 INFO L146 ILogger]: Abstraction has 305 states and 310 transitions. [2019-05-23 11:15:18,806 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:15:18,806 INFO L146 ILogger]: Start isEmpty. Operand 305 states and 310 transitions. [2019-05-23 11:15:18,808 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 300 [2019-05-23 11:15:18,808 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:18,809 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:18,809 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:18,809 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:18,809 INFO L146 ILogger]: Analyzing trace with hash 963741248, now seen corresponding path program 17 times [2019-05-23 11:15:18,810 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:18,810 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:18,810 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:18,811 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:18,811 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:18,836 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,349 INFO L146 ILogger]: Checked inductivity of 1517 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2019-05-23 11:15:19,350 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:19,350 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 11:15:19,359 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1