java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_copy9_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:17:40,691 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:17:40,693 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:17:40,705 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:17:40,706 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:17:40,707 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:17:40,708 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:17:40,710 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:17:40,712 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:17:40,713 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:17:40,714 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:17:40,714 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:17:40,715 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:17:40,716 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:17:40,717 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:17:40,718 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:17:40,719 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:17:40,721 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:17:40,723 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:17:40,725 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:17:40,726 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:17:40,728 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:17:40,731 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-05-23 11:17:40,744 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:17:40,745 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:17:40,745 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:17:40,745 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:17:40,748 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:17:40,750 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:17:40,751 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:17:40,779 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:17:40,781 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:17:40,782 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:17:40,782 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:17:40,782 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:17:40,783 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:17:40,784 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:17:40,784 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:17:40,784 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:17:40,784 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:17:40,785 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:17:40,785 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:17:40,785 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:17:40,785 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:17:40,785 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:17:40,786 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:17:40,787 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:17:40,787 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:17:40,787 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:17:40,787 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:17:40,788 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:17:40,788 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:17:40,788 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:17:40,788 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:17:40,788 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:17:40,789 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:17:40,789 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:17:40,790 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:17:40,790 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 11:17:40,843 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:17:40,858 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:17:40,862 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:17:40,863 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:17:40,864 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:17:40,864 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy9_true-unreach-call_ground.i [2019-05-23 11:17:40,930 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ae6d2d8/cf60b15b02ba40c2ba5f13f31e3d4477/FLAG6badb7d2b [2019-05-23 11:17:41,382 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:17:41,383 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy9_true-unreach-call_ground.i [2019-05-23 11:17:41,392 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ae6d2d8/cf60b15b02ba40c2ba5f13f31e3d4477/FLAG6badb7d2b [2019-05-23 11:17:41,742 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ae6d2d8/cf60b15b02ba40c2ba5f13f31e3d4477 [2019-05-23 11:17:41,752 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:17:41,754 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:17:41,755 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:41,755 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:17:41,760 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:17:41,761 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:41" (1/1) ... [2019-05-23 11:17:41,764 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293d864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:41, skipping insertion in model container [2019-05-23 11:17:41,764 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:41" (1/1) ... [2019-05-23 11:17:41,772 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:17:41,797 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:17:42,012 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:42,016 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:17:42,074 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:42,108 INFO L146 ILogger]: Completed translation [2019-05-23 11:17:42,108 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42 WrapperNode [2019-05-23 11:17:42,109 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:42,110 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:42,110 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:17:42,111 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:17:42,122 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (1/1) ... [2019-05-23 11:17:42,136 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (1/1) ... [2019-05-23 11:17:42,172 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:42,172 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:17:42,172 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:17:42,173 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:17:42,268 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (1/1) ... [2019-05-23 11:17:42,268 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (1/1) ... [2019-05-23 11:17:42,277 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (1/1) ... [2019-05-23 11:17:42,277 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (1/1) ... [2019-05-23 11:17:42,295 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (1/1) ... [2019-05-23 11:17:42,310 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (1/1) ... [2019-05-23 11:17:42,312 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (1/1) ... [2019-05-23 11:17:42,315 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:17:42,316 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:17:42,316 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:17:42,316 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:17:42,317 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (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 11:17:42,370 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:17:42,370 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:17:42,370 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:17:42,370 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:17:42,371 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:17:42,371 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:17:43,250 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:17:43,250 INFO L146 ILogger]: Removed 17 assume(true) statements. [2019-05-23 11:17:43,252 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:43 BoogieIcfgContainer [2019-05-23 11:17:43,252 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:17:43,253 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:17:43,253 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:17:43,256 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:17:43,256 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:17:41" (1/3) ... [2019-05-23 11:17:43,257 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f03b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:43, skipping insertion in model container [2019-05-23 11:17:43,257 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:42" (2/3) ... [2019-05-23 11:17:43,258 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f03b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:43, skipping insertion in model container [2019-05-23 11:17:43,258 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:43" (3/3) ... [2019-05-23 11:17:43,260 INFO L146 ILogger]: Analyzing ICFG standard_copy9_true-unreach-call_ground.i [2019-05-23 11:17:43,269 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:17:43,277 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:17:43,294 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:17:43,326 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:17:43,327 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:17:43,327 INFO L146 ILogger]: Hoare is true [2019-05-23 11:17:43,327 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:17:43,327 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:17:43,328 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:17:43,328 INFO L146 ILogger]: Difference is false [2019-05-23 11:17:43,328 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:17:43,328 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:17:43,348 INFO L146 ILogger]: Start isEmpty. Operand 136 states. [2019-05-23 11:17:43,356 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:17:43,357 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:43,357 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] [2019-05-23 11:17:43,359 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:43,364 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:43,365 INFO L146 ILogger]: Analyzing trace with hash -83620567, now seen corresponding path program 1 times [2019-05-23 11:17:43,366 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:43,367 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:43,411 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,411 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:43,411 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,476 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:43,557 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 11:17:43,560 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:43,560 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:17:43,564 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:17:43,575 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:17:43,576 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:17:43,578 INFO L146 ILogger]: Start difference. First operand 136 states. Second operand 2 states. [2019-05-23 11:17:43,607 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:43,608 INFO L146 ILogger]: Finished difference Result 249 states and 291 transitions. [2019-05-23 11:17:43,608 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:17:43,609 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 46 [2019-05-23 11:17:43,610 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:43,622 INFO L146 ILogger]: With dead ends: 249 [2019-05-23 11:17:43,622 INFO L146 ILogger]: Without dead ends: 112 [2019-05-23 11:17:43,628 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:17:43,646 INFO L146 ILogger]: Start minimizeSevpa. Operand 112 states. [2019-05-23 11:17:43,668 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-05-23 11:17:43,669 INFO L146 ILogger]: Start removeUnreachable. Operand 112 states. [2019-05-23 11:17:43,671 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2019-05-23 11:17:43,672 INFO L146 ILogger]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 46 [2019-05-23 11:17:43,673 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:43,673 INFO L146 ILogger]: Abstraction has 112 states and 122 transitions. [2019-05-23 11:17:43,673 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:17:43,674 INFO L146 ILogger]: Start isEmpty. Operand 112 states and 122 transitions. [2019-05-23 11:17:43,676 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:17:43,676 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:43,676 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] [2019-05-23 11:17:43,677 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:43,677 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:43,677 INFO L146 ILogger]: Analyzing trace with hash 1700532306, now seen corresponding path program 1 times [2019-05-23 11:17:43,677 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:43,677 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:43,679 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,679 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:43,679 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,718 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:43,798 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 11:17:43,798 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:43,798 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:17:43,800 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:17:43,800 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:17:43,801 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:17:43,801 INFO L146 ILogger]: Start difference. First operand 112 states and 122 transitions. Second operand 3 states. [2019-05-23 11:17:43,859 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:43,859 INFO L146 ILogger]: Finished difference Result 207 states and 227 transitions. [2019-05-23 11:17:43,860 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:17:43,860 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 46 [2019-05-23 11:17:43,860 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:43,862 INFO L146 ILogger]: With dead ends: 207 [2019-05-23 11:17:43,862 INFO L146 ILogger]: Without dead ends: 118 [2019-05-23 11:17:43,865 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:17:43,866 INFO L146 ILogger]: Start minimizeSevpa. Operand 118 states. [2019-05-23 11:17:43,882 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 118 to 113. [2019-05-23 11:17:43,883 INFO L146 ILogger]: Start removeUnreachable. Operand 113 states. [2019-05-23 11:17:43,884 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2019-05-23 11:17:43,885 INFO L146 ILogger]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 46 [2019-05-23 11:17:43,885 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:43,885 INFO L146 ILogger]: Abstraction has 113 states and 123 transitions. [2019-05-23 11:17:43,885 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:17:43,885 INFO L146 ILogger]: Start isEmpty. Operand 113 states and 123 transitions. [2019-05-23 11:17:43,891 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 54 [2019-05-23 11:17:43,893 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:43,893 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] [2019-05-23 11:17:43,894 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:43,894 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:43,894 INFO L146 ILogger]: Analyzing trace with hash 578671676, now seen corresponding path program 1 times [2019-05-23 11:17:43,894 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:43,894 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:43,895 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,895 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:43,895 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,919 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:44,010 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 11:17:44,011 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:44,011 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 11:17:44,035 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:44,094 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:44,096 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:17:44,103 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:44,232 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:17:44,254 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:17:44,254 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:17:44,255 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:17:44,256 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:17:44,256 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:17:44,256 INFO L146 ILogger]: Start difference. First operand 113 states and 123 transitions. Second operand 6 states. [2019-05-23 11:17:45,028 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:45,029 INFO L146 ILogger]: Finished difference Result 268 states and 297 transitions. [2019-05-23 11:17:45,032 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:17:45,032 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 53 [2019-05-23 11:17:45,033 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:45,034 INFO L146 ILogger]: With dead ends: 268 [2019-05-23 11:17:45,035 INFO L146 ILogger]: Without dead ends: 179 [2019-05-23 11:17:45,036 INFO L146 ILogger]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:17:45,036 INFO L146 ILogger]: Start minimizeSevpa. Operand 179 states. [2019-05-23 11:17:45,045 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 179 to 129. [2019-05-23 11:17:45,045 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:17:45,046 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2019-05-23 11:17:45,046 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 53 [2019-05-23 11:17:45,047 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:45,047 INFO L146 ILogger]: Abstraction has 129 states and 139 transitions. [2019-05-23 11:17:45,047 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:17:45,047 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 139 transitions. [2019-05-23 11:17:45,051 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:17:45,051 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:45,052 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:45,052 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:45,052 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:45,053 INFO L146 ILogger]: Analyzing trace with hash -2087851558, now seen corresponding path program 1 times [2019-05-23 11:17:45,053 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:45,053 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:45,054 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:45,054 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:45,054 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:45,079 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:45,163 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:17:45,164 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:45,164 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 11:17:45,183 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:45,251 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:45,252 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:45,258 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:45,362 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:17:45,381 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:45,381 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:17:45,382 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:17:45,382 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:17:45,383 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:17:45,383 INFO L146 ILogger]: Start difference. First operand 129 states and 139 transitions. Second operand 10 states. [2019-05-23 11:17:46,294 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:46,294 INFO L146 ILogger]: Finished difference Result 291 states and 312 transitions. [2019-05-23 11:17:46,296 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:17:46,296 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 123 [2019-05-23 11:17:46,297 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:46,301 INFO L146 ILogger]: With dead ends: 291 [2019-05-23 11:17:46,301 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:17:46,302 INFO L146 ILogger]: 0 DeclaredPredicates, 133 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:17:46,303 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:17:46,318 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 143. [2019-05-23 11:17:46,318 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:17:46,319 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2019-05-23 11:17:46,319 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 123 [2019-05-23 11:17:46,319 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:46,319 INFO L146 ILogger]: Abstraction has 143 states and 153 transitions. [2019-05-23 11:17:46,320 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:17:46,320 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 153 transitions. [2019-05-23 11:17:46,326 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:17:46,326 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:46,327 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:46,328 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:46,328 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:46,329 INFO L146 ILogger]: Analyzing trace with hash -551879016, now seen corresponding path program 2 times [2019-05-23 11:17:46,329 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:46,329 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:46,330 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:46,330 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:46,330 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:46,369 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:46,569 INFO L146 ILogger]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:17:46,570 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:46,570 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 11:17:46,579 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:46,651 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:46,651 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:46,653 INFO L146 ILogger]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:46,661 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:47,065 INFO L146 ILogger]: Checked inductivity of 41 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:17:47,087 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:47,087 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:17:47,088 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:17:47,088 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:17:47,088 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:17:47,089 INFO L146 ILogger]: Start difference. First operand 143 states and 153 transitions. Second operand 12 states. [2019-05-23 11:17:47,578 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:47,578 INFO L146 ILogger]: Finished difference Result 307 states and 328 transitions. [2019-05-23 11:17:47,579 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:17:47,579 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 137 [2019-05-23 11:17:47,579 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:47,581 INFO L146 ILogger]: With dead ends: 307 [2019-05-23 11:17:47,581 INFO L146 ILogger]: Without dead ends: 202 [2019-05-23 11:17:47,583 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:17:47,584 INFO L146 ILogger]: Start minimizeSevpa. Operand 202 states. [2019-05-23 11:17:47,592 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 202 to 157. [2019-05-23 11:17:47,592 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:17:47,593 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2019-05-23 11:17:47,593 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 137 [2019-05-23 11:17:47,593 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:47,593 INFO L146 ILogger]: Abstraction has 157 states and 167 transitions. [2019-05-23 11:17:47,594 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:17:47,594 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 167 transitions. [2019-05-23 11:17:47,596 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:17:47,596 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:47,596 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:47,596 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:47,597 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:47,597 INFO L146 ILogger]: Analyzing trace with hash 665743873, now seen corresponding path program 3 times [2019-05-23 11:17:47,597 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:47,597 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:47,598 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:47,598 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:47,599 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:47,621 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:47,708 INFO L146 ILogger]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:17:47,709 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:47,709 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 11:17:47,719 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:47,777 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:17:47,778 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:47,779 INFO L146 ILogger]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:47,784 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:47,832 INFO L146 ILogger]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:17:47,852 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:47,852 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:47,852 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:47,853 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:47,854 INFO L146 ILogger]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:47,854 INFO L146 ILogger]: Start difference. First operand 157 states and 167 transitions. Second operand 7 states. [2019-05-23 11:17:48,197 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:48,197 INFO L146 ILogger]: Finished difference Result 276 states and 294 transitions. [2019-05-23 11:17:48,197 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:17:48,198 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 151 [2019-05-23 11:17:48,199 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:48,200 INFO L146 ILogger]: With dead ends: 276 [2019-05-23 11:17:48,200 INFO L146 ILogger]: Without dead ends: 206 [2019-05-23 11:17:48,201 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:17:48,201 INFO L146 ILogger]: Start minimizeSevpa. Operand 206 states. [2019-05-23 11:17:48,207 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 206 to 171. [2019-05-23 11:17:48,207 INFO L146 ILogger]: Start removeUnreachable. Operand 171 states. [2019-05-23 11:17:48,208 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 171 states to 171 states and 181 transitions. [2019-05-23 11:17:48,208 INFO L146 ILogger]: Start accepts. Automaton has 171 states and 181 transitions. Word has length 151 [2019-05-23 11:17:48,209 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:48,209 INFO L146 ILogger]: Abstraction has 171 states and 181 transitions. [2019-05-23 11:17:48,209 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:17:48,209 INFO L146 ILogger]: Start isEmpty. Operand 171 states and 181 transitions. [2019-05-23 11:17:48,211 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:17:48,211 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:48,211 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:48,212 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:48,212 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:48,212 INFO L146 ILogger]: Analyzing trace with hash 102309416, now seen corresponding path program 4 times [2019-05-23 11:17:48,212 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:48,212 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:48,213 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,213 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:48,214 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,234 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,327 INFO L146 ILogger]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-05-23 11:17:48,327 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:48,328 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 11:17:48,337 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:48,673 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:48,673 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,675 INFO L146 ILogger]: Trace formula consists of 307 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:17:48,679 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:48,815 INFO L146 ILogger]: Checked inductivity of 87 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-05-23 11:17:48,835 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:48,835 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2019-05-23 11:17:48,836 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:17:48,836 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:17:48,837 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:17:48,837 INFO L146 ILogger]: Start difference. First operand 171 states and 181 transitions. Second operand 14 states. [2019-05-23 11:17:49,440 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:49,440 INFO L146 ILogger]: Finished difference Result 341 states and 362 transitions. [2019-05-23 11:17:49,441 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:17:49,442 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 165 [2019-05-23 11:17:49,442 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:49,444 INFO L146 ILogger]: With dead ends: 341 [2019-05-23 11:17:49,445 INFO L146 ILogger]: Without dead ends: 215 [2019-05-23 11:17:49,446 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:17:49,446 INFO L146 ILogger]: Start minimizeSevpa. Operand 215 states. [2019-05-23 11:17:49,453 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 215 to 185. [2019-05-23 11:17:49,453 INFO L146 ILogger]: Start removeUnreachable. Operand 185 states. [2019-05-23 11:17:49,454 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 185 states to 185 states and 195 transitions. [2019-05-23 11:17:49,454 INFO L146 ILogger]: Start accepts. Automaton has 185 states and 195 transitions. Word has length 165 [2019-05-23 11:17:49,455 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:49,455 INFO L146 ILogger]: Abstraction has 185 states and 195 transitions. [2019-05-23 11:17:49,455 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:17:49,455 INFO L146 ILogger]: Start isEmpty. Operand 185 states and 195 transitions. [2019-05-23 11:17:49,457 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 180 [2019-05-23 11:17:49,457 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:49,458 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:49,458 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:49,458 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:49,458 INFO L146 ILogger]: Analyzing trace with hash 432464081, now seen corresponding path program 5 times [2019-05-23 11:17:49,459 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:49,459 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:49,460 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:49,460 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:49,460 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:49,481 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,704 INFO L146 ILogger]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:17:49,705 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:49,705 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 11:17:49,714 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:58,884 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:17:58,884 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:58,892 INFO L146 ILogger]: Trace formula consists of 327 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:58,895 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:58,947 INFO L146 ILogger]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:17:58,970 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:58,971 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:58,971 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:58,971 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:58,972 INFO L146 ILogger]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:58,972 INFO L146 ILogger]: Start difference. First operand 185 states and 195 transitions. Second operand 7 states. [2019-05-23 11:17:59,326 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:59,326 INFO L146 ILogger]: Finished difference Result 278 states and 294 transitions. [2019-05-23 11:17:59,326 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:17:59,327 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 179 [2019-05-23 11:17:59,327 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:59,329 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:17:59,330 INFO L146 ILogger]: Without dead ends: 219 [2019-05-23 11:17:59,330 INFO L146 ILogger]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:17:59,331 INFO L146 ILogger]: Start minimizeSevpa. Operand 219 states. [2019-05-23 11:17:59,336 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 219 to 199. [2019-05-23 11:17:59,336 INFO L146 ILogger]: Start removeUnreachable. Operand 199 states. [2019-05-23 11:17:59,337 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 199 states to 199 states and 209 transitions. [2019-05-23 11:17:59,337 INFO L146 ILogger]: Start accepts. Automaton has 199 states and 209 transitions. Word has length 179 [2019-05-23 11:17:59,338 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:59,338 INFO L146 ILogger]: Abstraction has 199 states and 209 transitions. [2019-05-23 11:17:59,338 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:17:59,338 INFO L146 ILogger]: Start isEmpty. Operand 199 states and 209 transitions. [2019-05-23 11:17:59,340 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 194 [2019-05-23 11:17:59,340 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:59,341 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:59,341 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:59,341 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:59,341 INFO L146 ILogger]: Analyzing trace with hash 1987578250, now seen corresponding path program 6 times [2019-05-23 11:17:59,341 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:59,342 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:59,342 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:59,343 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:59,343 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:59,368 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,504 INFO L146 ILogger]: Checked inductivity of 140 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2019-05-23 11:17:59,505 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:59,505 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 11:17:59,515 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:59,570 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:17:59,570 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,572 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:59,574 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:59,622 INFO L146 ILogger]: Checked inductivity of 140 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2019-05-23 11:17:59,642 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:59,642 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:59,643 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:59,643 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:59,644 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:59,644 INFO L146 ILogger]: Start difference. First operand 199 states and 209 transitions. Second operand 7 states. [2019-05-23 11:18:00,006 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:00,006 INFO L146 ILogger]: Finished difference Result 257 states and 270 transitions. [2019-05-23 11:18:00,007 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:18:00,007 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 193 [2019-05-23 11:18:00,007 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:00,009 INFO L146 ILogger]: With dead ends: 257 [2019-05-23 11:18:00,013 INFO L146 ILogger]: Without dead ends: 216 [2019-05-23 11:18:00,014 INFO L146 ILogger]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:18:00,014 INFO L146 ILogger]: Start minimizeSevpa. Operand 216 states. [2019-05-23 11:18:00,018 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 216 to 206. [2019-05-23 11:18:00,018 INFO L146 ILogger]: Start removeUnreachable. Operand 206 states. [2019-05-23 11:18:00,019 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 206 states to 206 states and 216 transitions. [2019-05-23 11:18:00,019 INFO L146 ILogger]: Start accepts. Automaton has 206 states and 216 transitions. Word has length 193 [2019-05-23 11:18:00,019 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:00,020 INFO L146 ILogger]: Abstraction has 206 states and 216 transitions. [2019-05-23 11:18:00,020 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:18:00,020 INFO L146 ILogger]: Start isEmpty. Operand 206 states and 216 transitions. [2019-05-23 11:18:00,022 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 201 [2019-05-23 11:18:00,022 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:00,022 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:00,023 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:00,023 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:00,023 INFO L146 ILogger]: Analyzing trace with hash 71110028, now seen corresponding path program 7 times [2019-05-23 11:18:00,023 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:00,023 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:00,024 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:00,024 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:00,025 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:00,046 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:00,364 INFO L146 ILogger]: Checked inductivity of 148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-05-23 11:18:00,365 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:00,365 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 11:18:00,387 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:00,465 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:00,468 INFO L146 ILogger]: Trace formula consists of 357 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:18:00,472 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:01,003 INFO L146 ILogger]: Checked inductivity of 148 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:18:01,024 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:01,024 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13] total 16 [2019-05-23 11:18:01,025 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:18:01,025 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:18:01,025 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:18:01,025 INFO L146 ILogger]: Start difference. First operand 206 states and 216 transitions. Second operand 16 states. [2019-05-23 11:18:01,564 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:01,564 INFO L146 ILogger]: Finished difference Result 384 states and 405 transitions. [2019-05-23 11:18:01,564 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:18:01,564 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 200 [2019-05-23 11:18:01,565 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:01,566 INFO L146 ILogger]: With dead ends: 384 [2019-05-23 11:18:01,566 INFO L146 ILogger]: Without dead ends: 230 [2019-05-23 11:18:01,567 INFO L146 ILogger]: 0 DeclaredPredicates, 216 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:18:01,567 INFO L146 ILogger]: Start minimizeSevpa. Operand 230 states. [2019-05-23 11:18:01,571 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 230 to 220. [2019-05-23 11:18:01,572 INFO L146 ILogger]: Start removeUnreachable. Operand 220 states. [2019-05-23 11:18:01,573 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 220 states to 220 states and 230 transitions. [2019-05-23 11:18:01,573 INFO L146 ILogger]: Start accepts. Automaton has 220 states and 230 transitions. Word has length 200 [2019-05-23 11:18:01,573 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:01,573 INFO L146 ILogger]: Abstraction has 220 states and 230 transitions. [2019-05-23 11:18:01,573 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:18:01,573 INFO L146 ILogger]: Start isEmpty. Operand 220 states and 230 transitions. [2019-05-23 11:18:01,574 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 215 [2019-05-23 11:18:01,575 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:01,575 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:01,575 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:01,575 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:01,576 INFO L146 ILogger]: Analyzing trace with hash -294550126, now seen corresponding path program 8 times [2019-05-23 11:18:01,576 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:01,576 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:01,577 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,577 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:01,577 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,603 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,851 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:18:01,852 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:01,852 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 11:18:01,861 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:01,935 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:01,935 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,937 INFO L146 ILogger]: Trace formula consists of 377 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:18:01,940 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:02,067 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:18:02,099 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:02,099 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:18:02,100 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:18:02,100 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:18:02,101 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:18:02,101 INFO L146 ILogger]: Start difference. First operand 220 states and 230 transitions. Second operand 17 states. [2019-05-23 11:18:02,556 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:02,556 INFO L146 ILogger]: Finished difference Result 393 states and 413 transitions. [2019-05-23 11:18:02,557 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:18:02,557 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 214 [2019-05-23 11:18:02,557 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:02,559 INFO L146 ILogger]: With dead ends: 393 [2019-05-23 11:18:02,559 INFO L146 ILogger]: Without dead ends: 232 [2019-05-23 11:18:02,560 INFO L146 ILogger]: 0 DeclaredPredicates, 240 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:18:02,560 INFO L146 ILogger]: Start minimizeSevpa. Operand 232 states. [2019-05-23 11:18:02,565 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 232 to 227. [2019-05-23 11:18:02,565 INFO L146 ILogger]: Start removeUnreachable. Operand 227 states. [2019-05-23 11:18:02,566 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 227 states to 227 states and 237 transitions. [2019-05-23 11:18:02,566 INFO L146 ILogger]: Start accepts. Automaton has 227 states and 237 transitions. Word has length 214 [2019-05-23 11:18:02,566 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:02,566 INFO L146 ILogger]: Abstraction has 227 states and 237 transitions. [2019-05-23 11:18:02,566 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:18:02,567 INFO L146 ILogger]: Start isEmpty. Operand 227 states and 237 transitions. [2019-05-23 11:18:02,568 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 222 [2019-05-23 11:18:02,568 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:02,568 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:02,568 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:02,569 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:02,569 INFO L146 ILogger]: Analyzing trace with hash -63768708, now seen corresponding path program 9 times [2019-05-23 11:18:02,569 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:02,569 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:02,570 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,570 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:02,570 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,596 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,905 INFO L146 ILogger]: Checked inductivity of 235 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:18:02,906 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:02,906 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 11:18:02,915 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:02,988 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:18:02,988 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,989 INFO L146 ILogger]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:02,992 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:03,098 INFO L146 ILogger]: Checked inductivity of 235 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2019-05-23 11:18:03,119 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:03,119 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:18:03,120 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:18:03,120 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:18:03,120 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:18:03,121 INFO L146 ILogger]: Start difference. First operand 227 states and 237 transitions. Second operand 22 states. [2019-05-23 11:18:05,845 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:05,846 INFO L146 ILogger]: Finished difference Result 412 states and 433 transitions. [2019-05-23 11:18:05,846 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:18:05,846 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 221 [2019-05-23 11:18:05,846 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:05,848 INFO L146 ILogger]: With dead ends: 412 [2019-05-23 11:18:05,848 INFO L146 ILogger]: Without dead ends: 251 [2019-05-23 11:18:05,849 INFO L146 ILogger]: 0 DeclaredPredicates, 255 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:18:05,849 INFO L146 ILogger]: Start minimizeSevpa. Operand 251 states. [2019-05-23 11:18:05,853 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 251 to 241. [2019-05-23 11:18:05,854 INFO L146 ILogger]: Start removeUnreachable. Operand 241 states. [2019-05-23 11:18:05,854 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 241 states to 241 states and 251 transitions. [2019-05-23 11:18:05,855 INFO L146 ILogger]: Start accepts. Automaton has 241 states and 251 transitions. Word has length 221 [2019-05-23 11:18:05,855 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:05,855 INFO L146 ILogger]: Abstraction has 241 states and 251 transitions. [2019-05-23 11:18:05,855 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:18:05,855 INFO L146 ILogger]: Start isEmpty. Operand 241 states and 251 transitions. [2019-05-23 11:18:05,857 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 236 [2019-05-23 11:18:05,857 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:05,857 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:05,857 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:05,857 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:05,858 INFO L146 ILogger]: Analyzing trace with hash -135790822, now seen corresponding path program 10 times [2019-05-23 11:18:05,858 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:05,858 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:05,859 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:05,859 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:05,859 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:05,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:06,644 INFO L146 ILogger]: Checked inductivity of 300 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:18:06,644 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:06,645 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 11:18:06,653 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:07,711 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:07,712 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,714 INFO L146 ILogger]: Trace formula consists of 407 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:18:07,718 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:07,800 INFO L146 ILogger]: Checked inductivity of 300 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:18:07,821 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:07,821 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:18:07,822 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:18:07,822 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:18:07,822 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:18:07,822 INFO L146 ILogger]: Start difference. First operand 241 states and 251 transitions. Second operand 21 states. [2019-05-23 11:18:08,088 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:08,088 INFO L146 ILogger]: Finished difference Result 421 states and 441 transitions. [2019-05-23 11:18:08,090 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:18:08,090 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 235 [2019-05-23 11:18:08,090 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:08,091 INFO L146 ILogger]: With dead ends: 421 [2019-05-23 11:18:08,092 INFO L146 ILogger]: Without dead ends: 253 [2019-05-23 11:18:08,093 INFO L146 ILogger]: 0 DeclaredPredicates, 269 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:18:08,093 INFO L146 ILogger]: Start minimizeSevpa. Operand 253 states. [2019-05-23 11:18:08,097 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 253 to 248. [2019-05-23 11:18:08,098 INFO L146 ILogger]: Start removeUnreachable. Operand 248 states. [2019-05-23 11:18:08,098 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 248 states to 248 states and 258 transitions. [2019-05-23 11:18:08,099 INFO L146 ILogger]: Start accepts. Automaton has 248 states and 258 transitions. Word has length 235 [2019-05-23 11:18:08,099 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:08,099 INFO L146 ILogger]: Abstraction has 248 states and 258 transitions. [2019-05-23 11:18:08,099 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:18:08,099 INFO L146 ILogger]: Start isEmpty. Operand 248 states and 258 transitions. [2019-05-23 11:18:08,101 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 243 [2019-05-23 11:18:08,101 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:08,102 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:08,102 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:08,102 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:08,102 INFO L146 ILogger]: Analyzing trace with hash -1167867024, now seen corresponding path program 11 times [2019-05-23 11:18:08,102 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:08,103 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:08,103 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:08,103 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:08,104 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:08,133 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:08,447 INFO L146 ILogger]: Checked inductivity of 357 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:18:08,448 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:08,448 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 11:18:08,456 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:21,622 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:18:21,622 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:21,637 INFO L146 ILogger]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:21,640 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:21,786 INFO L146 ILogger]: Checked inductivity of 357 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2019-05-23 11:18:21,809 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:21,809 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7] total 26 [2019-05-23 11:18:21,810 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:18:21,810 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:18:21,811 INFO L146 ILogger]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:18:21,811 INFO L146 ILogger]: Start difference. First operand 248 states and 258 transitions. Second operand 26 states. [2019-05-23 11:18:22,405 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:22,406 INFO L146 ILogger]: Finished difference Result 440 states and 461 transitions. [2019-05-23 11:18:22,406 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:18:22,406 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 242 [2019-05-23 11:18:22,407 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:22,409 INFO L146 ILogger]: With dead ends: 440 [2019-05-23 11:18:22,409 INFO L146 ILogger]: Without dead ends: 272 [2019-05-23 11:18:22,411 INFO L146 ILogger]: 0 DeclaredPredicates, 284 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=540, Invalid=1716, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:18:22,411 INFO L146 ILogger]: Start minimizeSevpa. Operand 272 states. [2019-05-23 11:18:22,416 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 272 to 262. [2019-05-23 11:18:22,416 INFO L146 ILogger]: Start removeUnreachable. Operand 262 states. [2019-05-23 11:18:22,417 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 262 states to 262 states and 272 transitions. [2019-05-23 11:18:22,417 INFO L146 ILogger]: Start accepts. Automaton has 262 states and 272 transitions. Word has length 242 [2019-05-23 11:18:22,417 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:22,417 INFO L146 ILogger]: Abstraction has 262 states and 272 transitions. [2019-05-23 11:18:22,418 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:18:22,418 INFO L146 ILogger]: Start isEmpty. Operand 262 states and 272 transitions. [2019-05-23 11:18:22,419 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 257 [2019-05-23 11:18:22,419 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:22,419 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:22,419 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:22,420 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:22,420 INFO L146 ILogger]: Analyzing trace with hash 1565169383, now seen corresponding path program 12 times [2019-05-23 11:18:22,420 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:22,420 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:22,421 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:22,421 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:22,421 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:22,447 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:22,883 INFO L146 ILogger]: Checked inductivity of 436 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:18:22,883 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:22,883 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:18:22,891 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:23,126 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:18:23,126 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:23,128 INFO L146 ILogger]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:23,130 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:23,242 INFO L146 ILogger]: Checked inductivity of 436 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2019-05-23 11:18:23,262 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:23,262 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 7] total 28 [2019-05-23 11:18:23,263 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:18:23,263 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:18:23,263 INFO L146 ILogger]: CoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:18:23,264 INFO L146 ILogger]: Start difference. First operand 262 states and 272 transitions. Second operand 28 states. [2019-05-23 11:18:24,472 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:24,472 INFO L146 ILogger]: Finished difference Result 461 states and 482 transitions. [2019-05-23 11:18:24,473 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:18:24,473 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 256 [2019-05-23 11:18:24,473 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:24,475 INFO L146 ILogger]: With dead ends: 461 [2019-05-23 11:18:24,475 INFO L146 ILogger]: Without dead ends: 286 [2019-05-23 11:18:24,477 INFO L146 ILogger]: 0 DeclaredPredicates, 302 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=645, Invalid=2007, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:18:24,478 INFO L146 ILogger]: Start minimizeSevpa. Operand 286 states. [2019-05-23 11:18:24,483 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 286 to 276. [2019-05-23 11:18:24,483 INFO L146 ILogger]: Start removeUnreachable. Operand 276 states. [2019-05-23 11:18:24,484 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 276 states to 276 states and 286 transitions. [2019-05-23 11:18:24,484 INFO L146 ILogger]: Start accepts. Automaton has 276 states and 286 transitions. Word has length 256 [2019-05-23 11:18:24,484 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:24,484 INFO L146 ILogger]: Abstraction has 276 states and 286 transitions. [2019-05-23 11:18:24,485 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:18:24,485 INFO L146 ILogger]: Start isEmpty. Operand 276 states and 286 transitions. [2019-05-23 11:18:24,486 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 271 [2019-05-23 11:18:24,486 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:24,487 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:24,487 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:24,487 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:24,487 INFO L146 ILogger]: Analyzing trace with hash -320211255, now seen corresponding path program 13 times [2019-05-23 11:18:24,488 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:24,488 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:24,488 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:24,489 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:24,489 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:24,532 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:25,588 INFO L146 ILogger]: Checked inductivity of 522 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:18:25,588 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:25,588 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 11:18:25,596 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:25,659 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:25,660 INFO L146 ILogger]: Trace formula consists of 457 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:18:25,664 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:26,209 INFO L146 ILogger]: Checked inductivity of 522 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:18:26,270 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:26,270 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:18:26,273 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:18:26,273 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:18:26,274 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:18:26,274 INFO L146 ILogger]: Start difference. First operand 276 states and 286 transitions. Second operand 27 states. [2019-05-23 11:18:27,514 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:27,515 INFO L146 ILogger]: Finished difference Result 470 states and 490 transitions. [2019-05-23 11:18:27,516 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:18:27,516 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 270 [2019-05-23 11:18:27,516 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:27,518 INFO L146 ILogger]: With dead ends: 470 [2019-05-23 11:18:27,519 INFO L146 ILogger]: Without dead ends: 288 [2019-05-23 11:18:27,521 INFO L146 ILogger]: 0 DeclaredPredicates, 316 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:18:27,521 INFO L146 ILogger]: Start minimizeSevpa. Operand 288 states. [2019-05-23 11:18:27,526 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 288 to 283. [2019-05-23 11:18:27,526 INFO L146 ILogger]: Start removeUnreachable. Operand 283 states. [2019-05-23 11:18:27,527 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 283 states to 283 states and 293 transitions. [2019-05-23 11:18:27,527 INFO L146 ILogger]: Start accepts. Automaton has 283 states and 293 transitions. Word has length 270 [2019-05-23 11:18:27,528 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:27,528 INFO L146 ILogger]: Abstraction has 283 states and 293 transitions. [2019-05-23 11:18:27,528 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:18:27,528 INFO L146 ILogger]: Start isEmpty. Operand 283 states and 293 transitions. [2019-05-23 11:18:27,529 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 278 [2019-05-23 11:18:27,529 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:27,530 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:27,530 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:27,530 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:27,531 INFO L146 ILogger]: Analyzing trace with hash 1962189491, now seen corresponding path program 14 times [2019-05-23 11:18:27,531 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:27,531 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:27,532 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:27,532 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:27,532 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:27,561 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:29,255 INFO L146 ILogger]: Checked inductivity of 600 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:18:29,255 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:29,255 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 11:18:29,265 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:29,341 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:29,341 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:29,343 INFO L146 ILogger]: Trace formula consists of 467 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:18:29,347 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:29,495 INFO L146 ILogger]: Checked inductivity of 600 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:18:29,525 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:29,526 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:18:29,526 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:18:29,527 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:18:29,527 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:18:29,527 INFO L146 ILogger]: Start difference. First operand 283 states and 293 transitions. Second operand 29 states. [2019-05-23 11:18:30,257 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:30,257 INFO L146 ILogger]: Finished difference Result 477 states and 497 transitions. [2019-05-23 11:18:30,258 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:18:30,258 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 277 [2019-05-23 11:18:30,258 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:30,259 INFO L146 ILogger]: With dead ends: 477 [2019-05-23 11:18:30,259 INFO L146 ILogger]: Without dead ends: 295 [2019-05-23 11:18:30,261 INFO L146 ILogger]: 0 DeclaredPredicates, 327 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:18:30,262 INFO L146 ILogger]: Start minimizeSevpa. Operand 295 states. [2019-05-23 11:18:30,266 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 295 to 290. [2019-05-23 11:18:30,266 INFO L146 ILogger]: Start removeUnreachable. Operand 290 states. [2019-05-23 11:18:30,267 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 290 states to 290 states and 300 transitions. [2019-05-23 11:18:30,267 INFO L146 ILogger]: Start accepts. Automaton has 290 states and 300 transitions. Word has length 277 [2019-05-23 11:18:30,267 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:30,267 INFO L146 ILogger]: Abstraction has 290 states and 300 transitions. [2019-05-23 11:18:30,267 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:18:30,268 INFO L146 ILogger]: Start isEmpty. Operand 290 states and 300 transitions. [2019-05-23 11:18:30,269 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 285 [2019-05-23 11:18:30,269 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:30,269 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:30,270 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:30,270 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:30,270 INFO L146 ILogger]: Analyzing trace with hash 175545225, now seen corresponding path program 15 times [2019-05-23 11:18:30,270 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:30,270 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:30,271 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:30,271 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:30,272 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:30,298 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:31,255 INFO L146 ILogger]: Checked inductivity of 685 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:18:31,256 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:31,256 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 11:18:31,264 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:31,342 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:18:31,343 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:31,344 INFO L146 ILogger]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:31,346 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:31,473 INFO L146 ILogger]: Checked inductivity of 685 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2019-05-23 11:18:31,493 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:31,493 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 7] total 34 [2019-05-23 11:18:31,494 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:18:31,494 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:18:31,495 INFO L146 ILogger]: CoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:18:31,495 INFO L146 ILogger]: Start difference. First operand 290 states and 300 transitions. Second operand 34 states. [2019-05-23 11:18:33,686 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:33,686 INFO L146 ILogger]: Finished difference Result 496 states and 517 transitions. [2019-05-23 11:18:33,687 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:18:33,687 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 284 [2019-05-23 11:18:33,687 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:33,689 INFO L146 ILogger]: With dead ends: 496 [2019-05-23 11:18:33,689 INFO L146 ILogger]: Without dead ends: 314 [2019-05-23 11:18:33,692 INFO L146 ILogger]: 0 DeclaredPredicates, 342 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1020, Invalid=3012, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:18:33,692 INFO L146 ILogger]: Start minimizeSevpa. Operand 314 states. [2019-05-23 11:18:33,697 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 314 to 304. [2019-05-23 11:18:33,697 INFO L146 ILogger]: Start removeUnreachable. Operand 304 states. [2019-05-23 11:18:33,698 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 304 states to 304 states and 314 transitions. [2019-05-23 11:18:33,698 INFO L146 ILogger]: Start accepts. Automaton has 304 states and 314 transitions. Word has length 284 [2019-05-23 11:18:33,698 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:33,698 INFO L146 ILogger]: Abstraction has 304 states and 314 transitions. [2019-05-23 11:18:33,698 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:18:33,699 INFO L146 ILogger]: Start isEmpty. Operand 304 states and 314 transitions. [2019-05-23 11:18:33,700 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 299 [2019-05-23 11:18:33,700 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:33,700 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:33,701 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:33,701 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:33,701 INFO L146 ILogger]: Analyzing trace with hash 32700917, now seen corresponding path program 16 times [2019-05-23 11:18:33,701 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:33,701 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:33,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:33,702 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:33,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:33,726 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:34,159 INFO L146 ILogger]: Checked inductivity of 792 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-05-23 11:18:34,159 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:34,159 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 11:18:34,168 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:37,855 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:37,856 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:37,864 INFO L146 ILogger]: Trace formula consists of 497 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:18:37,868 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:38,056 INFO L146 ILogger]: Checked inductivity of 792 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-05-23 11:18:38,077 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:38,078 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:18:38,078 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:18:38,078 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:18:38,079 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:18:38,079 INFO L146 ILogger]: Start difference. First operand 304 states and 314 transitions. Second operand 33 states. [2019-05-23 11:18:38,870 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:38,870 INFO L146 ILogger]: Finished difference Result 505 states and 525 transitions. [2019-05-23 11:18:38,871 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:18:38,871 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 298 [2019-05-23 11:18:38,871 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:38,873 INFO L146 ILogger]: With dead ends: 505 [2019-05-23 11:18:38,873 INFO L146 ILogger]: Without dead ends: 316 [2019-05-23 11:18:38,875 INFO L146 ILogger]: 0 DeclaredPredicates, 356 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:18:38,876 INFO L146 ILogger]: Start minimizeSevpa. Operand 316 states. [2019-05-23 11:18:38,880 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 316 to 311. [2019-05-23 11:18:38,880 INFO L146 ILogger]: Start removeUnreachable. Operand 311 states. [2019-05-23 11:18:38,881 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 311 states to 311 states and 321 transitions. [2019-05-23 11:18:38,881 INFO L146 ILogger]: Start accepts. Automaton has 311 states and 321 transitions. Word has length 298 [2019-05-23 11:18:38,881 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:38,882 INFO L146 ILogger]: Abstraction has 311 states and 321 transitions. [2019-05-23 11:18:38,882 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:18:38,882 INFO L146 ILogger]: Start isEmpty. Operand 311 states and 321 transitions. [2019-05-23 11:18:38,883 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 306 [2019-05-23 11:18:38,883 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:38,884 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:38,884 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:38,884 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:38,884 INFO L146 ILogger]: Analyzing trace with hash -1750727969, now seen corresponding path program 17 times [2019-05-23 11:18:38,884 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:38,885 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:38,885 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:38,885 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:38,886 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:38,911 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:39,344 INFO L146 ILogger]: Checked inductivity of 891 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-05-23 11:18:39,344 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:39,345 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 11:18:39,355 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1