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-industry-pattern/array_range_init_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:21:26,085 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:21:26,087 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:21:26,106 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:21:26,106 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:21:26,108 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:21:26,109 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:21:26,112 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:21:26,115 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:21:26,123 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:21:26,124 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:21:26,124 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:21:26,126 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:21:26,128 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:21:26,131 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:21:26,132 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:21:26,134 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:21:26,139 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:21:26,143 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:21:26,146 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:21:26,148 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:21:26,150 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:21:26,152 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:21:26,154 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:21:26,155 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:21:26,156 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:21:26,156 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:21:26,158 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:21:26,158 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:21:26,159 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:21:26,159 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:21:26,161 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:21:26,163 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:21:26,163 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:21:26,164 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:21:26,164 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:21:26,164 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:21:26,166 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:21:26,167 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:21:26,168 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:21:26,200 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:21:26,200 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:21:26,202 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:21:26,202 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:21:26,202 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:21:26,202 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:21:26,203 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:21:26,203 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:21:26,203 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:21:26,203 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:21:26,203 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:21:26,204 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:21:26,206 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:21:26,207 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:21:26,207 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:21:26,207 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:21:26,207 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:21:26,208 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:21:26,208 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:21:26,208 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:21:26,208 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:21:26,208 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:21:26,209 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:21:26,210 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:21:26,210 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:21:26,211 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:21:26,211 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:21:26,211 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:21:26,211 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 11:21:26,267 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:21:26,279 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:21:26,283 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:21:26,284 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:21:26,285 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:21:26,286 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-industry-pattern/array_range_init_false-unreach-call.i [2019-05-23 11:21:26,338 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0574ce28f/b50f76cd22914ed8b98bfad36709d9a8/FLAGf4fbbdd36 [2019-05-23 11:21:26,747 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:21:26,747 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-industry-pattern/array_range_init_false-unreach-call.i [2019-05-23 11:21:26,753 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0574ce28f/b50f76cd22914ed8b98bfad36709d9a8/FLAGf4fbbdd36 [2019-05-23 11:21:27,141 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0574ce28f/b50f76cd22914ed8b98bfad36709d9a8 [2019-05-23 11:21:27,149 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:21:27,150 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:21:27,152 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:27,153 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:21:27,156 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:21:27,157 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,160 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4d568f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27, skipping insertion in model container [2019-05-23 11:21:27,161 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,168 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:21:27,189 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:21:27,399 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:27,411 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:21:27,434 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:27,467 INFO L146 ILogger]: Completed translation [2019-05-23 11:21:27,467 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27 WrapperNode [2019-05-23 11:21:27,468 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:27,468 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:27,469 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:21:27,470 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:21:27,479 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,489 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,509 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:27,510 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:21:27,510 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:21:27,510 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:21:27,518 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,518 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,519 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,520 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,525 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,530 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,532 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,533 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:21:27,534 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:21:27,534 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:21:27,534 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:21:27,535 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:21:27,678 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:21:27,678 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:21:27,678 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:21:27,679 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:21:27,679 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:21:28,013 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:21:28,013 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:21:28,015 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:28 BoogieIcfgContainer [2019-05-23 11:21:28,016 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:21:28,016 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:21:28,017 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:21:28,020 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:21:28,020 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:21:27" (1/3) ... [2019-05-23 11:21:28,021 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d587b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:28, skipping insertion in model container [2019-05-23 11:21:28,021 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (2/3) ... [2019-05-23 11:21:28,022 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d587b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:28, skipping insertion in model container [2019-05-23 11:21:28,022 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:28" (3/3) ... [2019-05-23 11:21:28,024 INFO L146 ILogger]: Analyzing ICFG array_range_init_false-unreach-call.i [2019-05-23 11:21:28,033 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:21:28,041 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:21:28,057 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:21:28,084 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:21:28,085 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:21:28,085 INFO L146 ILogger]: Hoare is true [2019-05-23 11:21:28,085 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:21:28,085 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:21:28,086 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:21:28,086 INFO L146 ILogger]: Difference is false [2019-05-23 11:21:28,086 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:21:28,086 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:21:28,101 INFO L146 ILogger]: Start isEmpty. Operand 32 states. [2019-05-23 11:21:28,108 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 18 [2019-05-23 11:21:28,108 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:28,109 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:28,112 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:28,117 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:28,117 INFO L146 ILogger]: Analyzing trace with hash 1080607396, now seen corresponding path program 1 times [2019-05-23 11:21:28,119 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:28,119 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:28,163 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:28,163 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:28,164 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:28,199 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:28,237 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 11:21:28,240 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:28,241 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:21:28,245 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:21:28,258 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:21:28,259 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:21:28,261 INFO L146 ILogger]: Start difference. First operand 32 states. Second operand 2 states. [2019-05-23 11:21:28,275 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:28,275 INFO L146 ILogger]: Finished difference Result 49 states and 56 transitions. [2019-05-23 11:21:28,276 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:21:28,277 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 17 [2019-05-23 11:21:28,277 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:28,285 INFO L146 ILogger]: With dead ends: 49 [2019-05-23 11:21:28,285 INFO L146 ILogger]: Without dead ends: 28 [2019-05-23 11:21:28,288 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 11:21:28,302 INFO L146 ILogger]: Start minimizeSevpa. Operand 28 states. [2019-05-23 11:21:28,314 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-05-23 11:21:28,315 INFO L146 ILogger]: Start removeUnreachable. Operand 28 states. [2019-05-23 11:21:28,317 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-05-23 11:21:28,318 INFO L146 ILogger]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 17 [2019-05-23 11:21:28,318 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:28,318 INFO L146 ILogger]: Abstraction has 28 states and 30 transitions. [2019-05-23 11:21:28,319 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:21:28,319 INFO L146 ILogger]: Start isEmpty. Operand 28 states and 30 transitions. [2019-05-23 11:21:28,319 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 18 [2019-05-23 11:21:28,320 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:28,320 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:28,320 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:28,320 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:28,321 INFO L146 ILogger]: Analyzing trace with hash -1872346731, now seen corresponding path program 1 times [2019-05-23 11:21:28,321 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:28,321 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:28,323 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:28,323 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:28,323 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:28,338 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:28,371 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 11:21:28,371 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:28,372 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:21:28,374 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:21:28,374 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:21:28,375 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:21:28,375 INFO L146 ILogger]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2019-05-23 11:21:28,535 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:28,535 INFO L146 ILogger]: Finished difference Result 64 states and 70 transitions. [2019-05-23 11:21:28,536 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:21:28,536 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 17 [2019-05-23 11:21:28,536 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:28,537 INFO L146 ILogger]: With dead ends: 64 [2019-05-23 11:21:28,537 INFO L146 ILogger]: Without dead ends: 44 [2019-05-23 11:21:28,539 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 11:21:28,539 INFO L146 ILogger]: Start minimizeSevpa. Operand 44 states. [2019-05-23 11:21:28,544 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 44 to 30. [2019-05-23 11:21:28,545 INFO L146 ILogger]: Start removeUnreachable. Operand 30 states. [2019-05-23 11:21:28,545 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-05-23 11:21:28,546 INFO L146 ILogger]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 17 [2019-05-23 11:21:28,546 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:28,546 INFO L146 ILogger]: Abstraction has 30 states and 32 transitions. [2019-05-23 11:21:28,546 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:21:28,546 INFO L146 ILogger]: Start isEmpty. Operand 30 states and 32 transitions. [2019-05-23 11:21:28,547 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:21:28,547 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:28,548 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] [2019-05-23 11:21:28,548 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:28,548 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:28,548 INFO L146 ILogger]: Analyzing trace with hash -537253268, now seen corresponding path program 1 times [2019-05-23 11:21:28,548 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:28,549 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:28,550 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:28,550 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:28,550 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:28,566 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:28,652 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 11:21:28,652 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:28,653 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 11:21:28,663 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:28,690 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:28,692 INFO L146 ILogger]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:21:28,700 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:29,035 INFO L146 ILogger]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:29,058 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:21:29,058 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-05-23 11:21:29,059 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:21:29,059 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:21:29,060 INFO L146 ILogger]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:21:29,060 INFO L146 ILogger]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2019-05-23 11:21:29,641 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:29,641 INFO L146 ILogger]: Finished difference Result 72 states and 78 transitions. [2019-05-23 11:21:29,642 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:21:29,642 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 23 [2019-05-23 11:21:29,642 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:29,643 INFO L146 ILogger]: With dead ends: 72 [2019-05-23 11:21:29,644 INFO L146 ILogger]: Without dead ends: 59 [2019-05-23 11:21:29,645 INFO L146 ILogger]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:21:29,645 INFO L146 ILogger]: Start minimizeSevpa. Operand 59 states. [2019-05-23 11:21:29,650 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 59 to 41. [2019-05-23 11:21:29,650 INFO L146 ILogger]: Start removeUnreachable. Operand 41 states. [2019-05-23 11:21:29,651 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2019-05-23 11:21:29,652 INFO L146 ILogger]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 23 [2019-05-23 11:21:29,652 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:29,652 INFO L146 ILogger]: Abstraction has 41 states and 44 transitions. [2019-05-23 11:21:29,652 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:21:29,653 INFO L146 ILogger]: Start isEmpty. Operand 41 states and 44 transitions. [2019-05-23 11:21:29,654 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:21:29,654 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:29,654 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:29,654 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:29,655 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:29,655 INFO L146 ILogger]: Analyzing trace with hash 310420666, now seen corresponding path program 1 times [2019-05-23 11:21:29,655 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:29,655 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:29,657 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:29,657 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:29,657 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:29,680 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:29,800 INFO L146 ILogger]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:21:29,800 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:29,800 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 11:21:29,816 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:29,842 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:29,843 INFO L146 ILogger]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:21:29,845 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:29,910 INFO L146 ILogger]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:29,933 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:29,933 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 9 [2019-05-23 11:21:29,934 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:21:29,934 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:21:29,934 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:21:29,934 INFO L146 ILogger]: Start difference. First operand 41 states and 44 transitions. Second operand 9 states. [2019-05-23 11:21:30,611 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:30,612 INFO L146 ILogger]: Finished difference Result 85 states and 93 transitions. [2019-05-23 11:21:30,612 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:21:30,612 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 35 [2019-05-23 11:21:30,613 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:30,615 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:21:30,615 INFO L146 ILogger]: Without dead ends: 72 [2019-05-23 11:21:30,616 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:21:30,616 INFO L146 ILogger]: Start minimizeSevpa. Operand 72 states. [2019-05-23 11:21:30,622 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 72 to 46. [2019-05-23 11:21:30,622 INFO L146 ILogger]: Start removeUnreachable. Operand 46 states. [2019-05-23 11:21:30,623 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2019-05-23 11:21:30,623 INFO L146 ILogger]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 35 [2019-05-23 11:21:30,624 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:30,624 INFO L146 ILogger]: Abstraction has 46 states and 50 transitions. [2019-05-23 11:21:30,624 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:21:30,624 INFO L146 ILogger]: Start isEmpty. Operand 46 states and 50 transitions. [2019-05-23 11:21:30,625 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:21:30,625 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:30,626 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:30,626 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:30,626 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:30,626 INFO L146 ILogger]: Analyzing trace with hash -1744556399, now seen corresponding path program 2 times [2019-05-23 11:21:30,626 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:30,627 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:30,628 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,628 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:30,628 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,645 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:30,785 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:30,786 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:30,786 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 11:21:30,798 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:30,836 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:30,837 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:30,838 INFO L146 ILogger]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:21:30,840 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:31,096 INFO L146 ILogger]: Checked inductivity of 37 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:31,126 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:31,126 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2019-05-23 11:21:31,127 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:21:31,127 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:21:31,128 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:21:31,128 INFO L146 ILogger]: Start difference. First operand 46 states and 50 transitions. Second operand 20 states. [2019-05-23 11:21:32,046 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:32,046 INFO L146 ILogger]: Finished difference Result 124 states and 138 transitions. [2019-05-23 11:21:32,047 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:21:32,047 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 41 [2019-05-23 11:21:32,047 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:32,048 INFO L146 ILogger]: With dead ends: 124 [2019-05-23 11:21:32,049 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:21:32,050 INFO L146 ILogger]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=450, Invalid=882, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:21:32,050 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:21:32,064 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 77. [2019-05-23 11:21:32,065 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:21:32,066 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2019-05-23 11:21:32,066 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 41 [2019-05-23 11:21:32,066 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:32,066 INFO L146 ILogger]: Abstraction has 77 states and 86 transitions. [2019-05-23 11:21:32,067 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:21:32,067 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 86 transitions. [2019-05-23 11:21:32,068 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:21:32,068 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:32,068 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:32,069 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:32,069 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:32,069 INFO L146 ILogger]: Analyzing trace with hash 957785508, now seen corresponding path program 3 times [2019-05-23 11:21:32,069 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:32,070 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:32,071 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,071 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:32,071 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,122 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:32,358 INFO L146 ILogger]: Checked inductivity of 205 backedges. 109 proven. 52 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-05-23 11:21:32,359 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:32,359 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 11:21:32,369 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:32,441 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:21:32,441 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:32,445 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:21:32,447 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:32,460 INFO L146 ILogger]: Checked inductivity of 205 backedges. 109 proven. 52 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-05-23 11:21:32,479 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:32,480 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-05-23 11:21:32,480 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:21:32,480 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:21:32,481 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:21:32,481 INFO L146 ILogger]: Start difference. First operand 77 states and 86 transitions. Second operand 13 states. [2019-05-23 11:21:32,733 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:32,733 INFO L146 ILogger]: Finished difference Result 143 states and 160 transitions. [2019-05-23 11:21:32,733 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:21:32,734 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 71 [2019-05-23 11:21:32,734 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:32,736 INFO L146 ILogger]: With dead ends: 143 [2019-05-23 11:21:32,737 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:21:32,738 INFO L146 ILogger]: 0 DeclaredPredicates, 93 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:21:32,738 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:21:32,745 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 83. [2019-05-23 11:21:32,745 INFO L146 ILogger]: Start removeUnreachable. Operand 83 states. [2019-05-23 11:21:32,746 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2019-05-23 11:21:32,746 INFO L146 ILogger]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 71 [2019-05-23 11:21:32,747 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:32,747 INFO L146 ILogger]: Abstraction has 83 states and 93 transitions. [2019-05-23 11:21:32,747 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:21:32,747 INFO L146 ILogger]: Start isEmpty. Operand 83 states and 93 transitions. [2019-05-23 11:21:32,749 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 78 [2019-05-23 11:21:32,749 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:32,750 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:32,750 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:32,750 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:32,750 INFO L146 ILogger]: Analyzing trace with hash -1099991141, now seen corresponding path program 4 times [2019-05-23 11:21:32,750 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:32,751 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:32,751 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,752 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:32,752 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,772 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:32,966 INFO L146 ILogger]: Checked inductivity of 255 backedges. 131 proven. 80 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-05-23 11:21:32,966 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:32,966 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 11:21:32,975 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:32,992 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:32,993 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:32,993 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:21:32,998 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:33,064 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:21:33,065 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:33,077 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:33,078 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:33,078 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:21:33,171 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:33,172 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 46 [2019-05-23 11:21:33,173 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:33,195 INFO L146 ILogger]: treesize reduction 24, result has 47.8 percent of original size [2019-05-23 11:21:33,196 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:33,196 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:21:33,821 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:33,822 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 108 [2019-05-23 11:21:33,824 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:33,906 INFO L146 ILogger]: treesize reduction 60, result has 38.8 percent of original size [2019-05-23 11:21:33,907 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:21:33,908 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:38 [2019-05-23 11:21:34,557 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:34,559 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 186 [2019-05-23 11:21:34,560 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:34,636 INFO L146 ILogger]: treesize reduction 96, result has 36.0 percent of original size [2019-05-23 11:21:34,638 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-05-23 11:21:34,638 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:58, output treesize:54 [2019-05-23 11:21:36,884 WARN L146 ILogger]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2019-05-23 11:21:36,884 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:36,885 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 280 [2019-05-23 11:21:36,888 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:36,991 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2019-05-23 11:21:36,991 INFO L146 ILogger]: treesize reduction 132, result has 34.7 percent of original size [2019-05-23 11:21:36,992 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:21:36,993 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:74, output treesize:70 [2019-05-23 11:21:39,472 WARN L146 ILogger]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-05-23 11:21:39,473 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:39,474 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 67 treesize of output 390 [2019-05-23 11:21:39,476 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:39,565 INFO L146 ILogger]: treesize reduction 168, result has 33.9 percent of original size [2019-05-23 11:21:39,567 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-05-23 11:21:39,568 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:90, output treesize:86 [2019-05-23 11:21:41,298 WARN L146 ILogger]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-05-23 11:21:41,299 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:41,300 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 78 treesize of output 516 [2019-05-23 11:21:41,303 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:41,468 WARN L146 ILogger]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2019-05-23 11:21:41,468 INFO L146 ILogger]: treesize reduction 242, result has 29.7 percent of original size [2019-05-23 11:21:41,470 INFO L146 ILogger]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-05-23 11:21:41,470 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 6 variables, input treesize:106, output treesize:102 [2019-05-23 11:21:53,109 WARN L146 ILogger]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2019-05-23 11:21:53,110 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:53,111 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 89 treesize of output 658 [2019-05-23 11:21:53,115 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:53,357 WARN L146 ILogger]: Spent 241.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 59 [2019-05-23 11:21:53,358 INFO L146 ILogger]: treesize reduction 316, result has 27.2 percent of original size [2019-05-23 11:21:53,360 INFO L146 ILogger]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-05-23 11:21:53,360 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 7 variables, input treesize:122, output treesize:118 [2019-05-23 11:22:16,769 WARN L146 ILogger]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2019-05-23 11:22:16,770 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:16,771 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 100 treesize of output 816 [2019-05-23 11:22:16,776 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:17,030 WARN L146 ILogger]: Spent 254.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 66 [2019-05-23 11:22:17,031 INFO L146 ILogger]: treesize reduction 390, result has 25.6 percent of original size [2019-05-23 11:22:17,033 INFO L146 ILogger]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-05-23 11:22:17,033 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 8 variables, input treesize:138, output treesize:134