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/data_structures_set_multi_proc_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:14:16,240 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:14:16,242 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:14:16,254 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:14:16,255 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:14:16,256 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:14:16,257 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:14:16,259 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:14:16,261 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:14:16,262 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:14:16,263 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:14:16,263 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:14:16,265 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:14:16,266 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:14:16,269 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:14:16,270 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:14:16,271 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:14:16,273 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:14:16,275 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:14:16,277 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:14:16,280 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:14:16,284 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:14:16,286 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:14:16,287 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:14:16,287 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:14:16,288 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:14:16,288 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:14:16,293 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:14:16,293 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:14:16,294 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:14:16,295 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:14:16,298 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:14:16,300 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:14:16,301 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:14:16,301 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:14:16,303 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:14:16,303 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:14:16,304 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:14:16,305 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:14:16,305 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:14:16,327 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:14:16,328 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:14:16,329 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:14:16,330 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:14:16,330 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:14:16,330 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:14:16,330 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:14:16,331 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:14:16,332 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:14:16,332 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:14:16,332 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:14:16,333 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:14:16,334 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:14:16,334 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:14:16,334 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:14:16,334 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:14:16,334 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:14:16,335 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:14:16,335 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:14:16,335 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:14:16,335 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:14:16,336 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:14:16,337 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:14:16,337 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:14:16,338 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:14:16,338 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:14:16,338 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:14:16,338 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:14:16,338 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 11:14:16,376 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:14:16,389 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:14:16,392 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:14:16,394 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:14:16,394 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:14:16,395 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/data_structures_set_multi_proc_false-unreach-call_ground.i [2019-05-23 11:14:16,460 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ca46f08/a225fcadc91742e79c041d761ae8afb5/FLAG68bb63ae0 [2019-05-23 11:14:16,886 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:14:16,886 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/data_structures_set_multi_proc_false-unreach-call_ground.i [2019-05-23 11:14:16,893 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ca46f08/a225fcadc91742e79c041d761ae8afb5/FLAG68bb63ae0 [2019-05-23 11:14:17,265 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ca46f08/a225fcadc91742e79c041d761ae8afb5 [2019-05-23 11:14:17,272 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:14:17,274 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:14:17,274 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,275 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:14:17,277 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:14:17,278 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,281 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8760b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17, skipping insertion in model container [2019-05-23 11:14:17,281 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,288 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:14:17,305 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:14:17,540 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,556 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:14:17,594 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,619 INFO L146 ILogger]: Completed translation [2019-05-23 11:14:17,619 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17 WrapperNode [2019-05-23 11:14:17,619 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,620 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,621 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:14:17,621 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:14:17,631 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 11:14:17,642 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 11:14:17,672 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,673 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,673 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:14:17,673 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:14:17,685 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 11:14:17,685 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 11:14:17,688 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 11:14:17,688 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 11:14:17,794 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 11:14:17,803 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 11:14:17,805 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 11:14:17,809 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,813 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:14:17,813 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:14:17,814 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:14:17,815 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 11:14:17,872 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:14:17,873 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:14:17,873 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:14:17,873 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:14:17,873 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:14:17,873 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:14:18,514 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:14:18,514 INFO L146 ILogger]: Removed 18 assume(true) statements. [2019-05-23 11:14:18,515 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18 BoogieIcfgContainer [2019-05-23 11:14:18,516 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:14:18,517 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:14:18,517 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:14:18,520 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:14:18,520 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:14:17" (1/3) ... [2019-05-23 11:14:18,521 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0f81fa 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 11:14:18,521 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 11:14:18,522 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0f81fa 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 11:14:18,522 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 11:14:18,524 INFO L146 ILogger]: Analyzing ICFG data_structures_set_multi_proc_false-unreach-call_ground.i [2019-05-23 11:14:18,533 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:14:18,542 INFO L146 ILogger]: Appying trace abstraction to program that has 2 error locations. [2019-05-23 11:14:18,558 INFO L146 ILogger]: Starting to check reachability of 2 error locations. [2019-05-23 11:14:18,589 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:14:18,590 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:14:18,590 INFO L146 ILogger]: Hoare is true [2019-05-23 11:14:18,590 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:14:18,591 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:14:18,591 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:14:18,591 INFO L146 ILogger]: Difference is false [2019-05-23 11:14:18,591 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:14:18,592 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:14:18,610 INFO L146 ILogger]: Start isEmpty. Operand 103 states. [2019-05-23 11:14:18,617 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 20 [2019-05-23 11:14:18,618 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,619 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:18,621 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,625 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,625 INFO L146 ILogger]: Analyzing trace with hash 677826218, now seen corresponding path program 1 times [2019-05-23 11:14:18,627 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,627 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,665 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,666 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,666 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,717 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,886 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 11:14:18,888 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:18,889 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:14:18,892 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:14:18,902 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:14:18,903 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:14:18,905 INFO L146 ILogger]: Start difference. First operand 103 states. Second operand 5 states. [2019-05-23 11:14:19,039 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,039 INFO L146 ILogger]: Finished difference Result 231 states and 265 transitions. [2019-05-23 11:14:19,042 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:14:19,043 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 19 [2019-05-23 11:14:19,044 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,055 INFO L146 ILogger]: With dead ends: 231 [2019-05-23 11:14:19,055 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:14:19,058 INFO L146 ILogger]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:14:19,077 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:14:19,102 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 105. [2019-05-23 11:14:19,103 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:14:19,106 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2019-05-23 11:14:19,108 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 19 [2019-05-23 11:14:19,108 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,108 INFO L146 ILogger]: Abstraction has 105 states and 113 transitions. [2019-05-23 11:14:19,108 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:14:19,109 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 113 transitions. [2019-05-23 11:14:19,111 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:14:19,111 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,112 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:19,112 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,113 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,113 INFO L146 ILogger]: Analyzing trace with hash 1878228291, now seen corresponding path program 1 times [2019-05-23 11:14:19,113 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,113 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,114 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,115 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,115 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,142 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,426 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 11:14:19,427 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,427 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 11:14:19,446 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,518 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,520 INFO L146 ILogger]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:14:19,529 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:19,656 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 11:14:19,683 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:19,684 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:14:19,685 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:14:19,685 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:14:19,685 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:19,691 INFO L146 ILogger]: Start difference. First operand 105 states and 113 transitions. Second operand 7 states. [2019-05-23 11:14:19,965 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,965 INFO L146 ILogger]: Finished difference Result 242 states and 261 transitions. [2019-05-23 11:14:19,974 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:14:19,974 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 59 [2019-05-23 11:14:19,975 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,977 INFO L146 ILogger]: With dead ends: 242 [2019-05-23 11:14:19,977 INFO L146 ILogger]: Without dead ends: 222 [2019-05-23 11:14:19,980 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 58 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 11:14:19,981 INFO L146 ILogger]: Start minimizeSevpa. Operand 222 states. [2019-05-23 11:14:19,996 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 222 to 148. [2019-05-23 11:14:19,997 INFO L146 ILogger]: Start removeUnreachable. Operand 148 states. [2019-05-23 11:14:19,998 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 148 states to 148 states and 159 transitions. [2019-05-23 11:14:19,999 INFO L146 ILogger]: Start accepts. Automaton has 148 states and 159 transitions. Word has length 59 [2019-05-23 11:14:19,999 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,999 INFO L146 ILogger]: Abstraction has 148 states and 159 transitions. [2019-05-23 11:14:19,999 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:14:20,000 INFO L146 ILogger]: Start isEmpty. Operand 148 states and 159 transitions. [2019-05-23 11:14:20,003 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:14:20,003 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:20,003 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:20,004 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:20,004 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:20,004 INFO L146 ILogger]: Analyzing trace with hash -31569984, now seen corresponding path program 1 times [2019-05-23 11:14:20,004 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:20,005 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:20,006 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,006 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,006 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,029 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,154 INFO L146 ILogger]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:14:20,154 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:20,154 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:14:20,157 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:14:20,157 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:14:20,158 INFO L146 ILogger]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:14:20,158 INFO L146 ILogger]: Start difference. First operand 148 states and 159 transitions. Second operand 4 states. [2019-05-23 11:14:20,239 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:20,242 INFO L146 ILogger]: Finished difference Result 210 states and 226 transitions. [2019-05-23 11:14:20,242 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:14:20,243 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 79 [2019-05-23 11:14:20,243 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:20,244 INFO L146 ILogger]: With dead ends: 210 [2019-05-23 11:14:20,244 INFO L146 ILogger]: Without dead ends: 118 [2019-05-23 11:14:20,247 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:14:20,248 INFO L146 ILogger]: Start minimizeSevpa. Operand 118 states. [2019-05-23 11:14:20,263 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 118 to 118. [2019-05-23 11:14:20,263 INFO L146 ILogger]: Start removeUnreachable. Operand 118 states. [2019-05-23 11:14:20,266 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2019-05-23 11:14:20,266 INFO L146 ILogger]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 79 [2019-05-23 11:14:20,266 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:20,267 INFO L146 ILogger]: Abstraction has 118 states and 124 transitions. [2019-05-23 11:14:20,267 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:14:20,267 INFO L146 ILogger]: Start isEmpty. Operand 118 states and 124 transitions. [2019-05-23 11:14:20,268 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:14:20,269 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:20,271 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 11:14:20,272 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:20,272 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:20,273 INFO L146 ILogger]: Analyzing trace with hash -709464405, now seen corresponding path program 2 times [2019-05-23 11:14:20,273 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:20,273 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:20,274 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,275 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,275 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,315 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,487 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:20,487 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:20,487 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 11:14:20,498 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:20,557 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:20,557 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,559 INFO L146 ILogger]: Trace formula consists of 196 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:14:20,566 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:21,010 INFO L146 ILogger]: Checked inductivity of 36 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:21,031 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:21,031 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 16 [2019-05-23 11:14:21,032 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:14:21,032 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:14:21,033 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:21,033 INFO L146 ILogger]: Start difference. First operand 118 states and 124 transitions. Second operand 16 states. [2019-05-23 11:14:23,313 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:23,314 INFO L146 ILogger]: Finished difference Result 381 states and 405 transitions. [2019-05-23 11:14:23,315 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-05-23 11:14:23,315 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 93 [2019-05-23 11:14:23,316 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,318 INFO L146 ILogger]: With dead ends: 381 [2019-05-23 11:14:23,318 INFO L146 ILogger]: Without dead ends: 319 [2019-05-23 11:14:23,320 INFO L146 ILogger]: 0 DeclaredPredicates, 140 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=723, Invalid=2469, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:14:23,321 INFO L146 ILogger]: Start minimizeSevpa. Operand 319 states. [2019-05-23 11:14:23,334 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 319 to 162. [2019-05-23 11:14:23,334 INFO L146 ILogger]: Start removeUnreachable. Operand 162 states. [2019-05-23 11:14:23,335 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 162 states to 162 states and 170 transitions. [2019-05-23 11:14:23,335 INFO L146 ILogger]: Start accepts. Automaton has 162 states and 170 transitions. Word has length 93 [2019-05-23 11:14:23,335 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:23,335 INFO L146 ILogger]: Abstraction has 162 states and 170 transitions. [2019-05-23 11:14:23,336 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:14:23,336 INFO L146 ILogger]: Start isEmpty. Operand 162 states and 170 transitions. [2019-05-23 11:14:23,338 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:14:23,338 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:23,338 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:23,339 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:23,339 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:23,339 INFO L146 ILogger]: Analyzing trace with hash 1841137411, now seen corresponding path program 1 times [2019-05-23 11:14:23,339 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:23,340 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,341 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,341 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:23,341 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,377 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,561 INFO L146 ILogger]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:23,561 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:23,561 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 11:14:23,571 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:23,626 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,627 INFO L146 ILogger]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:23,633 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,954 INFO L146 ILogger]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:24,000 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:24,001 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:14:24,002 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:14:24,002 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:14:24,003 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:14:24,004 INFO L146 ILogger]: Start difference. First operand 162 states and 170 transitions. Second operand 11 states. [2019-05-23 11:14:24,295 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:24,296 INFO L146 ILogger]: Finished difference Result 266 states and 280 transitions. [2019-05-23 11:14:24,296 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:14:24,296 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 133 [2019-05-23 11:14:24,297 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:24,298 INFO L146 ILogger]: With dead ends: 266 [2019-05-23 11:14:24,299 INFO L146 ILogger]: Without dead ends: 246 [2019-05-23 11:14:24,299 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:14:24,300 INFO L146 ILogger]: Start minimizeSevpa. Operand 246 states. [2019-05-23 11:14:24,310 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 246 to 205. [2019-05-23 11:14:24,310 INFO L146 ILogger]: Start removeUnreachable. Operand 205 states. [2019-05-23 11:14:24,311 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 205 states to 205 states and 215 transitions. [2019-05-23 11:14:24,311 INFO L146 ILogger]: Start accepts. Automaton has 205 states and 215 transitions. Word has length 133 [2019-05-23 11:14:24,312 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:24,312 INFO L146 ILogger]: Abstraction has 205 states and 215 transitions. [2019-05-23 11:14:24,312 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:14:24,312 INFO L146 ILogger]: Start isEmpty. Operand 205 states and 215 transitions. [2019-05-23 11:14:24,315 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 171 [2019-05-23 11:14:24,315 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:24,316 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:24,316 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:24,316 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:24,316 INFO L146 ILogger]: Analyzing trace with hash -1178512455, now seen corresponding path program 2 times [2019-05-23 11:14:24,316 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:24,317 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:24,318 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,318 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:24,318 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,391 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,658 INFO L146 ILogger]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:24,658 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:24,658 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 11:14:24,667 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:24,743 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:24,743 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,745 INFO L146 ILogger]: Trace formula consists of 353 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:14:24,757 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:24,887 INFO L146 ILogger]: Checked inductivity of 214 backedges. 0 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:24,906 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:24,907 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:14:24,907 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:14:24,907 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:14:24,909 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:14:24,909 INFO L146 ILogger]: Start difference. First operand 205 states and 215 transitions. Second operand 13 states. [2019-05-23 11:14:25,192 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:25,192 INFO L146 ILogger]: Finished difference Result 309 states and 325 transitions. [2019-05-23 11:14:25,193 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:14:25,193 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 170 [2019-05-23 11:14:25,194 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:25,196 INFO L146 ILogger]: With dead ends: 309 [2019-05-23 11:14:25,196 INFO L146 ILogger]: Without dead ends: 289 [2019-05-23 11:14:25,197 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:25,197 INFO L146 ILogger]: Start minimizeSevpa. Operand 289 states. [2019-05-23 11:14:25,206 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 289 to 248. [2019-05-23 11:14:25,207 INFO L146 ILogger]: Start removeUnreachable. Operand 248 states. [2019-05-23 11:14:25,208 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 248 states to 248 states and 260 transitions. [2019-05-23 11:14:25,208 INFO L146 ILogger]: Start accepts. Automaton has 248 states and 260 transitions. Word has length 170 [2019-05-23 11:14:25,208 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:25,209 INFO L146 ILogger]: Abstraction has 248 states and 260 transitions. [2019-05-23 11:14:25,209 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:14:25,209 INFO L146 ILogger]: Start isEmpty. Operand 248 states and 260 transitions. [2019-05-23 11:14:25,212 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 208 [2019-05-23 11:14:25,212 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:25,213 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:25,213 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:25,213 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:25,213 INFO L146 ILogger]: Analyzing trace with hash -920100669, now seen corresponding path program 3 times [2019-05-23 11:14:25,213 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:25,214 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:25,214 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:25,215 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:25,215 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:25,246 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:25,532 INFO L146 ILogger]: Checked inductivity of 359 backedges. 0 proven. 359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:25,532 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:25,532 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 11:14:25,543 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:25,621 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:14:25,621 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:25,623 INFO L146 ILogger]: Trace formula consists of 429 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:14:25,628 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:25,840 INFO L146 ILogger]: Checked inductivity of 359 backedges. 0 proven. 359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:25,861 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:25,861 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:14:25,861 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:14:25,862 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:14:25,862 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:14:25,862 INFO L146 ILogger]: Start difference. First operand 248 states and 260 transitions. Second operand 15 states. [2019-05-23 11:14:26,332 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:26,332 INFO L146 ILogger]: Finished difference Result 352 states and 370 transitions. [2019-05-23 11:14:26,333 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:14:26,333 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 207 [2019-05-23 11:14:26,334 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:26,335 INFO L146 ILogger]: With dead ends: 352 [2019-05-23 11:14:26,335 INFO L146 ILogger]: Without dead ends: 332 [2019-05-23 11:14:26,336 INFO L146 ILogger]: 0 DeclaredPredicates, 229 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:14:26,337 INFO L146 ILogger]: Start minimizeSevpa. Operand 332 states. [2019-05-23 11:14:26,345 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 332 to 291. [2019-05-23 11:14:26,346 INFO L146 ILogger]: Start removeUnreachable. Operand 291 states. [2019-05-23 11:14:26,347 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 291 states to 291 states and 305 transitions. [2019-05-23 11:14:26,347 INFO L146 ILogger]: Start accepts. Automaton has 291 states and 305 transitions. Word has length 207 [2019-05-23 11:14:26,347 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:26,348 INFO L146 ILogger]: Abstraction has 291 states and 305 transitions. [2019-05-23 11:14:26,348 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:14:26,348 INFO L146 ILogger]: Start isEmpty. Operand 291 states and 305 transitions. [2019-05-23 11:14:26,352 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 245 [2019-05-23 11:14:26,352 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:26,352 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 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 11:14:26,352 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:26,353 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:26,353 INFO L146 ILogger]: Analyzing trace with hash 491753977, now seen corresponding path program 4 times [2019-05-23 11:14:26,353 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:26,353 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:26,354 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,354 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:26,354 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,404 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,736 INFO L146 ILogger]: Checked inductivity of 541 backedges. 0 proven. 541 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:26,737 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:26,737 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 11:14:26,751 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:26,849 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:26,849 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,851 INFO L146 ILogger]: Trace formula consists of 505 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:14:26,856 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:26,966 INFO L146 ILogger]: Checked inductivity of 541 backedges. 0 proven. 541 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:26,986 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:26,987 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:14:26,987 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:14:26,987 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:14:26,988 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:14:26,988 INFO L146 ILogger]: Start difference. First operand 291 states and 305 transitions. Second operand 17 states. [2019-05-23 11:14:27,488 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:27,488 INFO L146 ILogger]: Finished difference Result 395 states and 415 transitions. [2019-05-23 11:14:27,488 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:14:27,488 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 244 [2019-05-23 11:14:27,489 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:27,491 INFO L146 ILogger]: With dead ends: 395 [2019-05-23 11:14:27,491 INFO L146 ILogger]: Without dead ends: 375 [2019-05-23 11:14:27,492 INFO L146 ILogger]: 0 DeclaredPredicates, 270 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:27,493 INFO L146 ILogger]: Start minimizeSevpa. Operand 375 states. [2019-05-23 11:14:27,501 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 375 to 334. [2019-05-23 11:14:27,502 INFO L146 ILogger]: Start removeUnreachable. Operand 334 states. [2019-05-23 11:14:27,503 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 334 states to 334 states and 350 transitions. [2019-05-23 11:14:27,503 INFO L146 ILogger]: Start accepts. Automaton has 334 states and 350 transitions. Word has length 244 [2019-05-23 11:14:27,504 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:27,504 INFO L146 ILogger]: Abstraction has 334 states and 350 transitions. [2019-05-23 11:14:27,504 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:14:27,504 INFO L146 ILogger]: Start isEmpty. Operand 334 states and 350 transitions. [2019-05-23 11:14:27,507 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 282 [2019-05-23 11:14:27,508 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:27,508 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 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 11:14:27,508 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:27,508 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:27,509 INFO L146 ILogger]: Analyzing trace with hash 2096106115, now seen corresponding path program 5 times [2019-05-23 11:14:27,509 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:27,509 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:27,510 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,510 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:27,510 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,538 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,784 INFO L146 ILogger]: Checked inductivity of 760 backedges. 0 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:27,784 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:27,784 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 11:14:27,794 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:27,930 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-05-23 11:14:27,930 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,933 INFO L146 ILogger]: Trace formula consists of 581 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:14:27,938 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:28,062 INFO L146 ILogger]: Checked inductivity of 760 backedges. 0 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:28,092 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:28,093 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:14:28,093 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:14:28,094 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:14:28,094 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:14:28,094 INFO L146 ILogger]: Start difference. First operand 334 states and 350 transitions. Second operand 19 states. [2019-05-23 11:14:28,661 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:28,661 INFO L146 ILogger]: Finished difference Result 438 states and 460 transitions. [2019-05-23 11:14:28,662 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:14:28,662 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 281 [2019-05-23 11:14:28,662 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:28,665 INFO L146 ILogger]: With dead ends: 438 [2019-05-23 11:14:28,665 INFO L146 ILogger]: Without dead ends: 418 [2019-05-23 11:14:28,666 INFO L146 ILogger]: 0 DeclaredPredicates, 311 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:28,666 INFO L146 ILogger]: Start minimizeSevpa. Operand 418 states. [2019-05-23 11:14:28,676 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 418 to 377. [2019-05-23 11:14:28,676 INFO L146 ILogger]: Start removeUnreachable. Operand 377 states. [2019-05-23 11:14:28,677 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 377 states to 377 states and 395 transitions. [2019-05-23 11:14:28,677 INFO L146 ILogger]: Start accepts. Automaton has 377 states and 395 transitions. Word has length 281 [2019-05-23 11:14:28,678 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:28,678 INFO L146 ILogger]: Abstraction has 377 states and 395 transitions. [2019-05-23 11:14:28,678 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:14:28,678 INFO L146 ILogger]: Start isEmpty. Operand 377 states and 395 transitions. [2019-05-23 11:14:28,682 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 319 [2019-05-23 11:14:28,683 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:28,683 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 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 11:14:28,683 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:28,684 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:28,684 INFO L146 ILogger]: Analyzing trace with hash -1857880007, now seen corresponding path program 6 times [2019-05-23 11:14:28,684 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:28,684 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:28,685 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,685 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:28,685 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:28,716 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,640 INFO L146 ILogger]: Checked inductivity of 1016 backedges. 0 proven. 1016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:29,640 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:29,640 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 11:14:29,652 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:29,798 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:14:29,798 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,800 INFO L146 ILogger]: Trace formula consists of 657 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:14:29,804 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:29,900 INFO L146 ILogger]: Checked inductivity of 1016 backedges. 0 proven. 1016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:29,921 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:29,921 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:14:29,922 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:14:29,922 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:14:29,922 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:29,923 INFO L146 ILogger]: Start difference. First operand 377 states and 395 transitions. Second operand 21 states. [2019-05-23 11:14:30,306 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:30,306 INFO L146 ILogger]: Finished difference Result 481 states and 505 transitions. [2019-05-23 11:14:30,307 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:14:30,307 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 318 [2019-05-23 11:14:30,308 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:30,311 INFO L146 ILogger]: With dead ends: 481 [2019-05-23 11:14:30,311 INFO L146 ILogger]: Without dead ends: 461 [2019-05-23 11:14:30,312 INFO L146 ILogger]: 0 DeclaredPredicates, 352 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:14:30,313 INFO L146 ILogger]: Start minimizeSevpa. Operand 461 states. [2019-05-23 11:14:30,323 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 461 to 420. [2019-05-23 11:14:30,324 INFO L146 ILogger]: Start removeUnreachable. Operand 420 states. [2019-05-23 11:14:30,325 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 420 states to 420 states and 440 transitions. [2019-05-23 11:14:30,325 INFO L146 ILogger]: Start accepts. Automaton has 420 states and 440 transitions. Word has length 318 [2019-05-23 11:14:30,326 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:30,326 INFO L146 ILogger]: Abstraction has 420 states and 440 transitions. [2019-05-23 11:14:30,326 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:14:30,326 INFO L146 ILogger]: Start isEmpty. Operand 420 states and 440 transitions. [2019-05-23 11:14:30,328 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 356 [2019-05-23 11:14:30,328 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:30,328 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 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 11:14:30,329 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:30,329 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:30,329 INFO L146 ILogger]: Analyzing trace with hash 1758495811, now seen corresponding path program 7 times [2019-05-23 11:14:30,329 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:30,329 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:30,330 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:30,330 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:30,331 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:30,364 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,773 INFO L146 ILogger]: Checked inductivity of 1309 backedges. 0 proven. 1309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:30,773 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:30,773 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 11:14:30,783 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:30,890 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,892 INFO L146 ILogger]: Trace formula consists of 733 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:14:30,897 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:31,061 INFO L146 ILogger]: Checked inductivity of 1309 backedges. 0 proven. 1309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:31,082 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:31,082 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:14:31,083 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:14:31,083 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:14:31,084 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:14:31,084 INFO L146 ILogger]: Start difference. First operand 420 states and 440 transitions. Second operand 23 states. [2019-05-23 11:14:32,122 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:32,122 INFO L146 ILogger]: Finished difference Result 524 states and 550 transitions. [2019-05-23 11:14:32,123 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:14:32,123 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 355 [2019-05-23 11:14:32,124 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:32,126 INFO L146 ILogger]: With dead ends: 524 [2019-05-23 11:14:32,126 INFO L146 ILogger]: Without dead ends: 504 [2019-05-23 11:14:32,127 INFO L146 ILogger]: 0 DeclaredPredicates, 393 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:14:32,128 INFO L146 ILogger]: Start minimizeSevpa. Operand 504 states. [2019-05-23 11:14:32,139 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 504 to 463. [2019-05-23 11:14:32,140 INFO L146 ILogger]: Start removeUnreachable. Operand 463 states. [2019-05-23 11:14:32,141 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 463 states to 463 states and 485 transitions. [2019-05-23 11:14:32,142 INFO L146 ILogger]: Start accepts. Automaton has 463 states and 485 transitions. Word has length 355 [2019-05-23 11:14:32,142 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:32,142 INFO L146 ILogger]: Abstraction has 463 states and 485 transitions. [2019-05-23 11:14:32,142 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:14:32,143 INFO L146 ILogger]: Start isEmpty. Operand 463 states and 485 transitions. [2019-05-23 11:14:32,145 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 393 [2019-05-23 11:14:32,145 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:32,145 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 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 11:14:32,146 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:32,146 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:32,146 INFO L146 ILogger]: Analyzing trace with hash -1688232327, now seen corresponding path program 8 times [2019-05-23 11:14:32,146 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:32,146 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:32,147 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:32,147 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:32,148 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:32,180 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:34,253 INFO L146 ILogger]: Checked inductivity of 1639 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:34,254 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:34,254 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 11:14:34,263 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:34,369 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:34,370 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:34,372 INFO L146 ILogger]: Trace formula consists of 809 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:14:34,378 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:34,550 INFO L146 ILogger]: Checked inductivity of 1639 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:34,569 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:34,570 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:14:34,570 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:14:34,571 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:14:34,571 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:14:34,571 INFO L146 ILogger]: Start difference. First operand 463 states and 485 transitions. Second operand 25 states. [2019-05-23 11:14:35,026 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:35,027 INFO L146 ILogger]: Finished difference Result 567 states and 595 transitions. [2019-05-23 11:14:35,031 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:14:35,031 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 392 [2019-05-23 11:14:35,032 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:35,034 INFO L146 ILogger]: With dead ends: 567 [2019-05-23 11:14:35,034 INFO L146 ILogger]: Without dead ends: 547 [2019-05-23 11:14:35,035 INFO L146 ILogger]: 0 DeclaredPredicates, 434 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:14:35,036 INFO L146 ILogger]: Start minimizeSevpa. Operand 547 states. [2019-05-23 11:14:35,048 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 547 to 506. [2019-05-23 11:14:35,048 INFO L146 ILogger]: Start removeUnreachable. Operand 506 states. [2019-05-23 11:14:35,050 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 506 states to 506 states and 530 transitions. [2019-05-23 11:14:35,050 INFO L146 ILogger]: Start accepts. Automaton has 506 states and 530 transitions. Word has length 392 [2019-05-23 11:14:35,051 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:35,051 INFO L146 ILogger]: Abstraction has 506 states and 530 transitions. [2019-05-23 11:14:35,051 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:14:35,051 INFO L146 ILogger]: Start isEmpty. Operand 506 states and 530 transitions. [2019-05-23 11:14:35,053 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 430 [2019-05-23 11:14:35,053 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:35,053 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 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 11:14:35,053 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:35,054 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:35,054 INFO L146 ILogger]: Analyzing trace with hash 293981699, now seen corresponding path program 9 times [2019-05-23 11:14:35,054 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:35,054 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:35,055 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:35,055 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:35,055 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:35,088 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:35,874 INFO L146 ILogger]: Checked inductivity of 2006 backedges. 0 proven. 2006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:35,874 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:35,874 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 11:14:35,883 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:36,122 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-05-23 11:14:36,123 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:36,126 INFO L146 ILogger]: Trace formula consists of 885 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:14:36,132 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:36,919 INFO L146 ILogger]: Checked inductivity of 2006 backedges. 0 proven. 2006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:36,977 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:36,978 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:14:36,978 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:14:36,979 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:14:36,979 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:14:36,979 INFO L146 ILogger]: Start difference. First operand 506 states and 530 transitions. Second operand 27 states. [2019-05-23 11:14:37,964 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:37,965 INFO L146 ILogger]: Finished difference Result 610 states and 640 transitions. [2019-05-23 11:14:37,966 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:14:37,967 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 429 [2019-05-23 11:14:37,968 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:37,970 INFO L146 ILogger]: With dead ends: 610 [2019-05-23 11:14:37,970 INFO L146 ILogger]: Without dead ends: 590 [2019-05-23 11:14:37,971 INFO L146 ILogger]: 0 DeclaredPredicates, 475 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:14:37,972 INFO L146 ILogger]: Start minimizeSevpa. Operand 590 states. [2019-05-23 11:14:37,985 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 590 to 549. [2019-05-23 11:14:37,985 INFO L146 ILogger]: Start removeUnreachable. Operand 549 states. [2019-05-23 11:14:37,987 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 549 states to 549 states and 575 transitions. [2019-05-23 11:14:37,987 INFO L146 ILogger]: Start accepts. Automaton has 549 states and 575 transitions. Word has length 429 [2019-05-23 11:14:37,987 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:37,988 INFO L146 ILogger]: Abstraction has 549 states and 575 transitions. [2019-05-23 11:14:37,988 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:14:37,988 INFO L146 ILogger]: Start isEmpty. Operand 549 states and 575 transitions. [2019-05-23 11:14:37,991 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 467 [2019-05-23 11:14:37,991 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:37,991 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 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 11:14:37,992 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:37,992 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:37,992 INFO L146 ILogger]: Analyzing trace with hash 1013542073, now seen corresponding path program 10 times [2019-05-23 11:14:37,992 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:37,992 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:37,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:37,993 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:37,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:38,032 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:38,632 INFO L146 ILogger]: Checked inductivity of 2410 backedges. 0 proven. 2410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:38,632 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:38,633 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 11:14:38,655 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:38,816 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:38,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:38,819 INFO L146 ILogger]: Trace formula consists of 961 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:14:38,826 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:39,068 INFO L146 ILogger]: Checked inductivity of 2410 backedges. 0 proven. 2410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:39,088 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:39,088 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:14:39,091 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:14:39,091 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:14:39,092 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:39,092 INFO L146 ILogger]: Start difference. First operand 549 states and 575 transitions. Second operand 29 states. [2019-05-23 11:14:39,772 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:39,773 INFO L146 ILogger]: Finished difference Result 653 states and 685 transitions. [2019-05-23 11:14:39,773 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:14:39,773 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 466 [2019-05-23 11:14:39,775 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:39,778 INFO L146 ILogger]: With dead ends: 653 [2019-05-23 11:14:39,778 INFO L146 ILogger]: Without dead ends: 633 [2019-05-23 11:14:39,779 INFO L146 ILogger]: 0 DeclaredPredicates, 516 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:14:39,780 INFO L146 ILogger]: Start minimizeSevpa. Operand 633 states. [2019-05-23 11:14:39,794 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 633 to 592. [2019-05-23 11:14:39,794 INFO L146 ILogger]: Start removeUnreachable. Operand 592 states. [2019-05-23 11:14:39,796 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 592 states to 592 states and 620 transitions. [2019-05-23 11:14:39,796 INFO L146 ILogger]: Start accepts. Automaton has 592 states and 620 transitions. Word has length 466 [2019-05-23 11:14:39,797 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:39,797 INFO L146 ILogger]: Abstraction has 592 states and 620 transitions. [2019-05-23 11:14:39,797 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:14:39,797 INFO L146 ILogger]: Start isEmpty. Operand 592 states and 620 transitions. [2019-05-23 11:14:39,800 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 504 [2019-05-23 11:14:39,800 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:39,801 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 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 11:14:39,801 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:39,801 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:39,802 INFO L146 ILogger]: Analyzing trace with hash 1623975875, now seen corresponding path program 11 times [2019-05-23 11:14:39,802 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:39,802 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:39,803 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:39,803 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:39,803 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:39,843 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:40,933 INFO L146 ILogger]: Checked inductivity of 2851 backedges. 0 proven. 2851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:40,933 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:40,933 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 11:14:40,943 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:41,302 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2019-05-23 11:14:41,302 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:41,305 INFO L146 ILogger]: Trace formula consists of 1037 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:14:41,311 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:41,622 INFO L146 ILogger]: Checked inductivity of 2851 backedges. 0 proven. 2851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:41,642 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:41,642 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:14:41,643 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:14:41,644 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:14:41,644 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:14:41,644 INFO L146 ILogger]: Start difference. First operand 592 states and 620 transitions. Second operand 31 states. [2019-05-23 11:14:42,366 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:42,366 INFO L146 ILogger]: Finished difference Result 696 states and 730 transitions. [2019-05-23 11:14:42,367 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:14:42,367 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 503 [2019-05-23 11:14:42,368 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:42,370 INFO L146 ILogger]: With dead ends: 696 [2019-05-23 11:14:42,370 INFO L146 ILogger]: Without dead ends: 676 [2019-05-23 11:14:42,372 INFO L146 ILogger]: 0 DeclaredPredicates, 557 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:14:42,372 INFO L146 ILogger]: Start minimizeSevpa. Operand 676 states. [2019-05-23 11:14:42,387 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 676 to 635. [2019-05-23 11:14:42,387 INFO L146 ILogger]: Start removeUnreachable. Operand 635 states. [2019-05-23 11:14:42,388 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 635 states to 635 states and 665 transitions. [2019-05-23 11:14:42,388 INFO L146 ILogger]: Start accepts. Automaton has 635 states and 665 transitions. Word has length 503 [2019-05-23 11:14:42,389 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:42,389 INFO L146 ILogger]: Abstraction has 635 states and 665 transitions. [2019-05-23 11:14:42,389 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:14:42,389 INFO L146 ILogger]: Start isEmpty. Operand 635 states and 665 transitions. [2019-05-23 11:14:42,393 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 541 [2019-05-23 11:14:42,393 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:42,393 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 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 11:14:42,394 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:42,394 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:42,394 INFO L146 ILogger]: Analyzing trace with hash 807693049, now seen corresponding path program 12 times [2019-05-23 11:14:42,394 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:42,394 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:42,395 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:42,395 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:42,395 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:42,440 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:43,443 INFO L146 ILogger]: Checked inductivity of 3329 backedges. 0 proven. 3329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:43,443 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:43,443 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 11:14:43,452 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:43,977 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2019-05-23 11:14:43,977 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:43,982 INFO L146 ILogger]: Trace formula consists of 1113 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:14:43,987 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:44,198 INFO L146 ILogger]: Checked inductivity of 3329 backedges. 0 proven. 3329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:44,218 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:44,218 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:14:44,219 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:14:44,219 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:14:44,220 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:44,220 INFO L146 ILogger]: Start difference. First operand 635 states and 665 transitions. Second operand 33 states. [2019-05-23 11:14:44,890 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:44,891 INFO L146 ILogger]: Finished difference Result 739 states and 775 transitions. [2019-05-23 11:14:44,891 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:14:44,891 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 540 [2019-05-23 11:14:44,892 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:44,895 INFO L146 ILogger]: With dead ends: 739 [2019-05-23 11:14:44,895 INFO L146 ILogger]: Without dead ends: 719 [2019-05-23 11:14:44,897 INFO L146 ILogger]: 0 DeclaredPredicates, 598 GetRequests, 539 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 11:14:44,897 INFO L146 ILogger]: Start minimizeSevpa. Operand 719 states. [2019-05-23 11:14:44,913 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 719 to 678. [2019-05-23 11:14:44,913 INFO L146 ILogger]: Start removeUnreachable. Operand 678 states. [2019-05-23 11:14:44,915 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 678 states to 678 states and 710 transitions. [2019-05-23 11:14:44,915 INFO L146 ILogger]: Start accepts. Automaton has 678 states and 710 transitions. Word has length 540 [2019-05-23 11:14:44,915 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:44,916 INFO L146 ILogger]: Abstraction has 678 states and 710 transitions. [2019-05-23 11:14:44,916 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:14:44,916 INFO L146 ILogger]: Start isEmpty. Operand 678 states and 710 transitions. [2019-05-23 11:14:44,920 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 578 [2019-05-23 11:14:44,920 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:44,920 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 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 11:14:44,921 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:44,921 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:44,921 INFO L146 ILogger]: Analyzing trace with hash 1700712835, now seen corresponding path program 13 times [2019-05-23 11:14:44,921 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:44,921 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:44,922 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:44,922 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:44,922 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:44,970 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:45,829 INFO L146 ILogger]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:45,829 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:45,829 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 11:14:45,837 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:45,991 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:45,994 INFO L146 ILogger]: Trace formula consists of 1189 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:14:46,000 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:46,621 INFO L146 ILogger]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:46,655 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:46,655 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:14:46,656 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:14:46,657 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:14:46,657 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:14:46,657 INFO L146 ILogger]: Start difference. First operand 678 states and 710 transitions. Second operand 35 states. [2019-05-23 11:14:47,462 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:47,462 INFO L146 ILogger]: Finished difference Result 782 states and 820 transitions. [2019-05-23 11:14:47,463 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:14:47,463 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 577 [2019-05-23 11:14:47,464 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:47,466 INFO L146 ILogger]: With dead ends: 782 [2019-05-23 11:14:47,466 INFO L146 ILogger]: Without dead ends: 762 [2019-05-23 11:14:47,468 INFO L146 ILogger]: 0 DeclaredPredicates, 639 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:14:47,469 INFO L146 ILogger]: Start minimizeSevpa. Operand 762 states. [2019-05-23 11:14:47,486 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 762 to 721. [2019-05-23 11:14:47,486 INFO L146 ILogger]: Start removeUnreachable. Operand 721 states. [2019-05-23 11:14:47,487 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 721 states to 721 states and 755 transitions. [2019-05-23 11:14:47,487 INFO L146 ILogger]: Start accepts. Automaton has 721 states and 755 transitions. Word has length 577 [2019-05-23 11:14:47,488 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:47,488 INFO L146 ILogger]: Abstraction has 721 states and 755 transitions. [2019-05-23 11:14:47,488 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:14:47,488 INFO L146 ILogger]: Start isEmpty. Operand 721 states and 755 transitions. [2019-05-23 11:14:47,492 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 615 [2019-05-23 11:14:47,492 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:47,493 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 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 11:14:47,493 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:47,493 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:47,494 INFO L146 ILogger]: Analyzing trace with hash 760518969, now seen corresponding path program 14 times [2019-05-23 11:14:47,494 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:47,494 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:47,495 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:47,495 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:47,495 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:47,543 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:48,356 INFO L146 ILogger]: Checked inductivity of 4396 backedges. 0 proven. 4396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:48,356 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:48,356 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 11:14:48,368 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:48,556 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:48,556 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:48,560 INFO L146 ILogger]: Trace formula consists of 1265 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:14:48,567 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:49,039 INFO L146 ILogger]: Checked inductivity of 4396 backedges. 0 proven. 4396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:49,058 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:49,058 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-05-23 11:14:49,059 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:14:49,060 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:14:49,060 INFO L146 ILogger]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:14:49,060 INFO L146 ILogger]: Start difference. First operand 721 states and 755 transitions. Second operand 37 states. [2019-05-23 11:14:49,843 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:49,843 INFO L146 ILogger]: Finished difference Result 825 states and 865 transitions. [2019-05-23 11:14:49,843 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:14:49,843 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 614 [2019-05-23 11:14:49,844 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:49,846 INFO L146 ILogger]: With dead ends: 825 [2019-05-23 11:14:49,846 INFO L146 ILogger]: Without dead ends: 805 [2019-05-23 11:14:49,848 INFO L146 ILogger]: 0 DeclaredPredicates, 680 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:14:49,848 INFO L146 ILogger]: Start minimizeSevpa. Operand 805 states. [2019-05-23 11:14:49,866 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 805 to 764. [2019-05-23 11:14:49,867 INFO L146 ILogger]: Start removeUnreachable. Operand 764 states. [2019-05-23 11:14:49,868 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 764 states to 764 states and 800 transitions. [2019-05-23 11:14:49,868 INFO L146 ILogger]: Start accepts. Automaton has 764 states and 800 transitions. Word has length 614 [2019-05-23 11:14:49,869 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:49,869 INFO L146 ILogger]: Abstraction has 764 states and 800 transitions. [2019-05-23 11:14:49,869 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:14:49,869 INFO L146 ILogger]: Start isEmpty. Operand 764 states and 800 transitions. [2019-05-23 11:14:49,874 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 652 [2019-05-23 11:14:49,874 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:49,874 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 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 11:14:49,875 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:49,875 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:49,875 INFO L146 ILogger]: Analyzing trace with hash 318409539, now seen corresponding path program 15 times [2019-05-23 11:14:49,875 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:49,875 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:49,876 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:49,876 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:49,876 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:49,920 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:50,833 INFO L146 ILogger]: Checked inductivity of 4985 backedges. 0 proven. 4985 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:50,833 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:50,833 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 11:14:50,842 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:51,492 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2019-05-23 11:14:51,492 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:51,498 INFO L146 ILogger]: Trace formula consists of 1341 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:14:51,505 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:51,961 INFO L146 ILogger]: Checked inductivity of 4985 backedges. 0 proven. 4985 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:51,982 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:51,982 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:14:51,983 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:14:51,984 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:14:51,984 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:14:51,984 INFO L146 ILogger]: Start difference. First operand 764 states and 800 transitions. Second operand 39 states. [2019-05-23 11:14:53,213 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:53,213 INFO L146 ILogger]: Finished difference Result 868 states and 910 transitions. [2019-05-23 11:14:53,213 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:14:53,214 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 651 [2019-05-23 11:14:53,214 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:53,218 INFO L146 ILogger]: With dead ends: 868 [2019-05-23 11:14:53,218 INFO L146 ILogger]: Without dead ends: 848 [2019-05-23 11:14:53,221 INFO L146 ILogger]: 0 DeclaredPredicates, 721 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:14:53,222 INFO L146 ILogger]: Start minimizeSevpa. Operand 848 states. [2019-05-23 11:14:53,240 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 848 to 807. [2019-05-23 11:14:53,241 INFO L146 ILogger]: Start removeUnreachable. Operand 807 states. [2019-05-23 11:14:53,242 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 807 states to 807 states and 845 transitions. [2019-05-23 11:14:53,242 INFO L146 ILogger]: Start accepts. Automaton has 807 states and 845 transitions. Word has length 651 [2019-05-23 11:14:53,243 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:53,243 INFO L146 ILogger]: Abstraction has 807 states and 845 transitions. [2019-05-23 11:14:53,243 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:14:53,243 INFO L146 ILogger]: Start isEmpty. Operand 807 states and 845 transitions. [2019-05-23 11:14:53,248 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 689 [2019-05-23 11:14:53,248 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:53,249 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 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 11:14:53,249 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:53,249 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:53,249 INFO L146 ILogger]: Analyzing trace with hash 633206649, now seen corresponding path program 16 times [2019-05-23 11:14:53,249 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:53,250 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:53,250 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:53,250 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:53,251 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:53,299 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:54,367 INFO L146 ILogger]: Checked inductivity of 5611 backedges. 0 proven. 5611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:54,367 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:54,368 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:14:54,381 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:55,057 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:55,057 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:55,062 INFO L146 ILogger]: Trace formula consists of 1417 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:14:55,068 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:55,431 INFO L146 ILogger]: Checked inductivity of 5611 backedges. 0 proven. 5611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:55,451 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:55,452 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:14:55,453 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:14:55,453 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:14:55,453 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:14:55,453 INFO L146 ILogger]: Start difference. First operand 807 states and 845 transitions. Second operand 41 states. [2019-05-23 11:14:56,462 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:56,462 INFO L146 ILogger]: Finished difference Result 911 states and 955 transitions. [2019-05-23 11:14:56,462 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:14:56,462 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 688 [2019-05-23 11:14:56,463 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:56,466 INFO L146 ILogger]: With dead ends: 911 [2019-05-23 11:14:56,466 INFO L146 ILogger]: Without dead ends: 891 [2019-05-23 11:14:56,468 INFO L146 ILogger]: 0 DeclaredPredicates, 762 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:14:56,468 INFO L146 ILogger]: Start minimizeSevpa. Operand 891 states. [2019-05-23 11:14:56,488 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 891 to 850. [2019-05-23 11:14:56,488 INFO L146 ILogger]: Start removeUnreachable. Operand 850 states. [2019-05-23 11:14:56,490 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 850 states to 850 states and 890 transitions. [2019-05-23 11:14:56,490 INFO L146 ILogger]: Start accepts. Automaton has 850 states and 890 transitions. Word has length 688 [2019-05-23 11:14:56,490 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:56,491 INFO L146 ILogger]: Abstraction has 850 states and 890 transitions. [2019-05-23 11:14:56,491 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:14:56,491 INFO L146 ILogger]: Start isEmpty. Operand 850 states and 890 transitions. [2019-05-23 11:14:56,496 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 726 [2019-05-23 11:14:56,496 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:56,497 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 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 11:14:56,497 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:56,497 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:56,497 INFO L146 ILogger]: Analyzing trace with hash 39523587, now seen corresponding path program 17 times [2019-05-23 11:14:56,498 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:56,498 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:56,498 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:56,499 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:56,499 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:56,551 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,546 INFO L146 ILogger]: Checked inductivity of 6274 backedges. 0 proven. 6274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:57,546 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:57,546 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:57,554 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:58,333 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2019-05-23 11:14:58,333 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:58,341 INFO L146 ILogger]: Trace formula consists of 1493 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:14:58,347 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:58,719 INFO L146 ILogger]: Checked inductivity of 6274 backedges. 0 proven. 6274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:58,750 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:58,751 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-05-23 11:14:58,752 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:14:58,752 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:14:58,753 INFO L146 ILogger]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:14:58,754 INFO L146 ILogger]: Start difference. First operand 850 states and 890 transitions. Second operand 43 states. [2019-05-23 11:14:59,826 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:59,826 INFO L146 ILogger]: Finished difference Result 954 states and 1000 transitions. [2019-05-23 11:14:59,827 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:14:59,827 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 725 [2019-05-23 11:14:59,827 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:59,830 INFO L146 ILogger]: With dead ends: 954 [2019-05-23 11:14:59,830 INFO L146 ILogger]: Without dead ends: 934 [2019-05-23 11:14:59,832 INFO L146 ILogger]: 0 DeclaredPredicates, 803 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:14:59,833 INFO L146 ILogger]: Start minimizeSevpa. Operand 934 states. [2019-05-23 11:14:59,854 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 934 to 893. [2019-05-23 11:14:59,854 INFO L146 ILogger]: Start removeUnreachable. Operand 893 states. [2019-05-23 11:14:59,856 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 893 states to 893 states and 935 transitions. [2019-05-23 11:14:59,856 INFO L146 ILogger]: Start accepts. Automaton has 893 states and 935 transitions. Word has length 725 [2019-05-23 11:14:59,856 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:59,857 INFO L146 ILogger]: Abstraction has 893 states and 935 transitions. [2019-05-23 11:14:59,857 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:14:59,857 INFO L146 ILogger]: Start isEmpty. Operand 893 states and 935 transitions. [2019-05-23 11:14:59,862 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 763 [2019-05-23 11:14:59,862 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:59,863 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 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 11:14:59,863 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:59,863 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:59,864 INFO L146 ILogger]: Analyzing trace with hash -2044426823, now seen corresponding path program 18 times [2019-05-23 11:14:59,864 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:59,864 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:59,865 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:59,865 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:59,865 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:59,921 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:02,920 INFO L146 ILogger]: Checked inductivity of 6974 backedges. 0 proven. 6974 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:02,921 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:02,921 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:02,973 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:04,197 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2019-05-23 11:15:04,197 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:04,204 INFO L146 ILogger]: Trace formula consists of 1569 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:15:04,209 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:04,667 INFO L146 ILogger]: Checked inductivity of 6974 backedges. 0 proven. 6974 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:04,698 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:04,699 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:15:04,700 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:15:04,700 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:15:04,701 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:15:04,701 INFO L146 ILogger]: Start difference. First operand 893 states and 935 transitions. Second operand 45 states. [2019-05-23 11:15:05,870 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:05,870 INFO L146 ILogger]: Finished difference Result 997 states and 1045 transitions. [2019-05-23 11:15:05,873 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:15:05,873 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 762 [2019-05-23 11:15:05,874 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:05,876 INFO L146 ILogger]: With dead ends: 997 [2019-05-23 11:15:05,876 INFO L146 ILogger]: Without dead ends: 977 [2019-05-23 11:15:05,877 INFO L146 ILogger]: 0 DeclaredPredicates, 844 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:15:05,877 INFO L146 ILogger]: Start minimizeSevpa. Operand 977 states. [2019-05-23 11:15:05,899 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 977 to 936. [2019-05-23 11:15:05,899 INFO L146 ILogger]: Start removeUnreachable. Operand 936 states. [2019-05-23 11:15:05,901 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 936 states to 936 states and 980 transitions. [2019-05-23 11:15:05,901 INFO L146 ILogger]: Start accepts. Automaton has 936 states and 980 transitions. Word has length 762 [2019-05-23 11:15:05,902 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:05,902 INFO L146 ILogger]: Abstraction has 936 states and 980 transitions. [2019-05-23 11:15:05,902 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:15:05,902 INFO L146 ILogger]: Start isEmpty. Operand 936 states and 980 transitions. [2019-05-23 11:15:05,908 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 800 [2019-05-23 11:15:05,909 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:05,909 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 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 11:15:05,909 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:05,910 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:05,910 INFO L146 ILogger]: Analyzing trace with hash 826044099, now seen corresponding path program 19 times [2019-05-23 11:15:05,910 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:05,910 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:05,911 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:05,911 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:05,911 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:05,977 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:08,344 INFO L146 ILogger]: Checked inductivity of 7711 backedges. 0 proven. 7711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:08,344 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:08,344 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:08,353 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:08,577 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:08,581 INFO L146 ILogger]: Trace formula consists of 1645 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:15:08,586 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:09,036 INFO L146 ILogger]: Checked inductivity of 7711 backedges. 0 proven. 7711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:09,056 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:09,056 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:15:09,057 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:15:09,057 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:15:09,058 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:15:09,058 INFO L146 ILogger]: Start difference. First operand 936 states and 980 transitions. Second operand 47 states. [2019-05-23 11:15:10,278 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:10,278 INFO L146 ILogger]: Finished difference Result 1040 states and 1090 transitions. [2019-05-23 11:15:10,278 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:15:10,278 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 799 [2019-05-23 11:15:10,279 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:10,284 INFO L146 ILogger]: With dead ends: 1040 [2019-05-23 11:15:10,284 INFO L146 ILogger]: Without dead ends: 1020 [2019-05-23 11:15:10,285 INFO L146 ILogger]: 0 DeclaredPredicates, 885 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:15:10,286 INFO L146 ILogger]: Start minimizeSevpa. Operand 1020 states. [2019-05-23 11:15:10,302 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1020 to 979. [2019-05-23 11:15:10,302 INFO L146 ILogger]: Start removeUnreachable. Operand 979 states. [2019-05-23 11:15:10,304 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1025 transitions. [2019-05-23 11:15:10,304 INFO L146 ILogger]: Start accepts. Automaton has 979 states and 1025 transitions. Word has length 799 [2019-05-23 11:15:10,305 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:10,305 INFO L146 ILogger]: Abstraction has 979 states and 1025 transitions. [2019-05-23 11:15:10,305 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:15:10,305 INFO L146 ILogger]: Start isEmpty. Operand 979 states and 1025 transitions. [2019-05-23 11:15:10,311 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 837 [2019-05-23 11:15:10,312 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:10,312 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 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 11:15:10,312 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:10,312 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:10,313 INFO L146 ILogger]: Analyzing trace with hash 1984709625, now seen corresponding path program 20 times [2019-05-23 11:15:10,313 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:10,313 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:10,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:10,314 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:10,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:10,374 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:11,609 INFO L146 ILogger]: Checked inductivity of 8485 backedges. 0 proven. 8485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:11,610 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:11,610 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:11,619 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:11,857 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:11,857 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:11,860 INFO L146 ILogger]: Trace formula consists of 1721 conjuncts, 46 conjunts are in the unsatisfiable core [2019-05-23 11:15:11,866 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:12,321 INFO L146 ILogger]: Checked inductivity of 8485 backedges. 0 proven. 8485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:12,340 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:12,341 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2019-05-23 11:15:12,342 INFO L146 ILogger]: Interpolant automaton has 49 states [2019-05-23 11:15:12,342 INFO L146 ILogger]: Constructing interpolant automaton starting with 49 interpolants. [2019-05-23 11:15:12,342 INFO L146 ILogger]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:15:12,342 INFO L146 ILogger]: Start difference. First operand 979 states and 1025 transitions. Second operand 49 states. [2019-05-23 11:15:13,975 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:13,975 INFO L146 ILogger]: Finished difference Result 1083 states and 1135 transitions. [2019-05-23 11:15:13,975 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-05-23 11:15:13,976 INFO L146 ILogger]: Start accepts. Automaton has 49 states. Word has length 836 [2019-05-23 11:15:13,976 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:13,980 INFO L146 ILogger]: With dead ends: 1083 [2019-05-23 11:15:13,980 INFO L146 ILogger]: Without dead ends: 1063 [2019-05-23 11:15:13,981 INFO L146 ILogger]: 0 DeclaredPredicates, 926 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2019-05-23 11:15:13,982 INFO L146 ILogger]: Start minimizeSevpa. Operand 1063 states. [2019-05-23 11:15:14,000 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1063 to 1022. [2019-05-23 11:15:14,000 INFO L146 ILogger]: Start removeUnreachable. Operand 1022 states. [2019-05-23 11:15:14,001 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1070 transitions. [2019-05-23 11:15:14,001 INFO L146 ILogger]: Start accepts. Automaton has 1022 states and 1070 transitions. Word has length 836 [2019-05-23 11:15:14,002 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:14,002 INFO L146 ILogger]: Abstraction has 1022 states and 1070 transitions. [2019-05-23 11:15:14,002 INFO L146 ILogger]: Interpolant automaton has 49 states. [2019-05-23 11:15:14,002 INFO L146 ILogger]: Start isEmpty. Operand 1022 states and 1070 transitions. [2019-05-23 11:15:14,009 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 874 [2019-05-23 11:15:14,009 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:14,009 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 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 11:15:14,010 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:14,010 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:14,010 INFO L146 ILogger]: Analyzing trace with hash -1034250109, now seen corresponding path program 21 times [2019-05-23 11:15:14,010 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:14,010 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:14,011 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:14,011 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:14,011 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:14,074 INFO L146 ILogger]: Conjunction of SSA is unsat