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_strcpy_original_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:08,144 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:08,146 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:08,157 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:08,158 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:08,159 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:08,160 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:08,162 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:08,164 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:08,165 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:08,168 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:08,168 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:08,170 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:08,171 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:08,173 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:08,175 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:08,175 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:08,179 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:08,181 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:08,188 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:08,194 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:08,195 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:08,199 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:08,200 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:08,200 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:08,201 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:08,202 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:08,203 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:08,204 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:08,204 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:08,208 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:08,209 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:08,209 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:08,210 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:08,211 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:08,211 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:08,212 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:08,213 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:08,213 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:08,214 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:08,240 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:08,240 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:08,242 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:08,243 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:08,243 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:08,243 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:08,243 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:08,243 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:08,244 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:08,244 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:08,244 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:08,245 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:08,245 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:08,245 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:08,245 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:08,245 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:08,245 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:08,246 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:08,246 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:08,246 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:08,246 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:08,246 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:08,248 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:08,248 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:08,248 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:08,248 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:08,249 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:08,249 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:08,249 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 11:20:08,288 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:08,300 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:08,304 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:08,305 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:08,305 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:08,306 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_strcpy_original_true-unreach-call.i [2019-05-23 11:20:08,360 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a0e6b92/3a11f27765dc4be9b66bd8f542e8fd7f/FLAG0b979b1c6 [2019-05-23 11:20:08,766 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:08,767 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_strcpy_original_true-unreach-call.i [2019-05-23 11:20:08,773 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a0e6b92/3a11f27765dc4be9b66bd8f542e8fd7f/FLAG0b979b1c6 [2019-05-23 11:20:09,148 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a0e6b92/3a11f27765dc4be9b66bd8f542e8fd7f [2019-05-23 11:20:09,158 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:09,160 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:09,161 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:09,161 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:09,164 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:09,165 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,168 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce63bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09, skipping insertion in model container [2019-05-23 11:20:09,168 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,176 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:09,199 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:09,411 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:09,416 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:09,445 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:09,462 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:09,463 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09 WrapperNode [2019-05-23 11:20:09,463 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:09,464 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:09,464 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:09,464 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:09,473 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,481 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,500 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:09,501 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:09,501 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:09,501 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:09,511 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,511 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,513 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,513 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,520 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,614 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,616 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (1/1) ... [2019-05-23 11:20:09,618 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:09,618 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:09,618 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:09,619 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:09,619 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (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 11:20:09,673 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:09,673 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:09,673 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:09,673 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:09,673 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:09,674 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:10,151 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:10,151 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:10,152 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:10 BoogieIcfgContainer [2019-05-23 11:20:10,152 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:10,153 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:10,154 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:10,157 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:10,157 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:09" (1/3) ... [2019-05-23 11:20:10,158 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c34f837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:10, skipping insertion in model container [2019-05-23 11:20:10,158 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:09" (2/3) ... [2019-05-23 11:20:10,159 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c34f837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:10, skipping insertion in model container [2019-05-23 11:20:10,159 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:10" (3/3) ... [2019-05-23 11:20:10,161 INFO L146 ILogger]: Analyzing ICFG standard_strcpy_original_true-unreach-call.i [2019-05-23 11:20:10,170 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:10,178 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:10,192 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:10,220 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:10,221 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:10,221 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:10,221 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:10,221 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:10,221 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:10,222 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:10,222 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:10,222 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:10,236 INFO L146 ILogger]: Start isEmpty. Operand 55 states. [2019-05-23 11:20:10,243 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:20:10,243 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:10,244 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 11:20:10,246 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:10,251 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:10,251 INFO L146 ILogger]: Analyzing trace with hash 1459890593, now seen corresponding path program 1 times [2019-05-23 11:20:10,253 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:10,253 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:10,306 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,306 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:10,306 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,347 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:10,386 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 11:20:10,389 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:10,389 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:10,393 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:10,406 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:10,407 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:10,409 INFO L146 ILogger]: Start difference. First operand 55 states. Second operand 2 states. [2019-05-23 11:20:10,425 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:10,425 INFO L146 ILogger]: Finished difference Result 97 states and 111 transitions. [2019-05-23 11:20:10,426 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:10,427 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 23 [2019-05-23 11:20:10,427 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:10,437 INFO L146 ILogger]: With dead ends: 97 [2019-05-23 11:20:10,437 INFO L146 ILogger]: Without dead ends: 45 [2019-05-23 11:20:10,441 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 11:20:10,455 INFO L146 ILogger]: Start minimizeSevpa. Operand 45 states. [2019-05-23 11:20:10,469 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-05-23 11:20:10,471 INFO L146 ILogger]: Start removeUnreachable. Operand 45 states. [2019-05-23 11:20:10,472 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2019-05-23 11:20:10,474 INFO L146 ILogger]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 23 [2019-05-23 11:20:10,474 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:10,475 INFO L146 ILogger]: Abstraction has 45 states and 49 transitions. [2019-05-23 11:20:10,475 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:10,475 INFO L146 ILogger]: Start isEmpty. Operand 45 states and 49 transitions. [2019-05-23 11:20:10,476 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:20:10,476 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:10,476 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] [2019-05-23 11:20:10,477 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:10,477 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:10,477 INFO L146 ILogger]: Analyzing trace with hash -467960053, now seen corresponding path program 1 times [2019-05-23 11:20:10,478 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:10,478 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:10,479 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,479 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:10,479 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,494 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:10,561 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 11:20:10,563 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:10,563 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:10,566 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:10,566 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:10,567 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:10,567 INFO L146 ILogger]: Start difference. First operand 45 states and 49 transitions. Second operand 3 states. [2019-05-23 11:20:10,639 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:10,639 INFO L146 ILogger]: Finished difference Result 82 states and 90 transitions. [2019-05-23 11:20:10,640 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:10,640 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 27 [2019-05-23 11:20:10,640 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:10,641 INFO L146 ILogger]: With dead ends: 82 [2019-05-23 11:20:10,641 INFO L146 ILogger]: Without dead ends: 50 [2019-05-23 11:20:10,642 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 11:20:10,642 INFO L146 ILogger]: Start minimizeSevpa. Operand 50 states. [2019-05-23 11:20:10,647 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 50 to 46. [2019-05-23 11:20:10,648 INFO L146 ILogger]: Start removeUnreachable. Operand 46 states. [2019-05-23 11:20:10,649 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2019-05-23 11:20:10,649 INFO L146 ILogger]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 27 [2019-05-23 11:20:10,649 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:10,649 INFO L146 ILogger]: Abstraction has 46 states and 50 transitions. [2019-05-23 11:20:10,650 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:10,650 INFO L146 ILogger]: Start isEmpty. Operand 46 states and 50 transitions. [2019-05-23 11:20:10,652 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:20:10,652 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:10,652 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] [2019-05-23 11:20:10,652 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:10,653 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:10,654 INFO L146 ILogger]: Analyzing trace with hash -1514836990, now seen corresponding path program 1 times [2019-05-23 11:20:10,654 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:10,654 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:10,655 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,655 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:10,655 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,694 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:10,742 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 11:20:10,742 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:10,742 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:10,743 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:10,743 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:10,743 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:10,744 INFO L146 ILogger]: Start difference. First operand 46 states and 50 transitions. Second operand 3 states. [2019-05-23 11:20:10,776 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:10,776 INFO L146 ILogger]: Finished difference Result 65 states and 70 transitions. [2019-05-23 11:20:10,777 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:10,777 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 32 [2019-05-23 11:20:10,777 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:10,778 INFO L146 ILogger]: With dead ends: 65 [2019-05-23 11:20:10,778 INFO L146 ILogger]: Without dead ends: 46 [2019-05-23 11:20:10,779 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 11:20:10,779 INFO L146 ILogger]: Start minimizeSevpa. Operand 46 states. [2019-05-23 11:20:10,783 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-05-23 11:20:10,784 INFO L146 ILogger]: Start removeUnreachable. Operand 46 states. [2019-05-23 11:20:10,785 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2019-05-23 11:20:10,785 INFO L146 ILogger]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 32 [2019-05-23 11:20:10,785 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:10,785 INFO L146 ILogger]: Abstraction has 46 states and 49 transitions. [2019-05-23 11:20:10,786 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:10,786 INFO L146 ILogger]: Start isEmpty. Operand 46 states and 49 transitions. [2019-05-23 11:20:10,787 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:20:10,787 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:10,787 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] [2019-05-23 11:20:10,787 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:10,788 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:10,788 INFO L146 ILogger]: Analyzing trace with hash 1263945087, now seen corresponding path program 1 times [2019-05-23 11:20:10,788 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:10,788 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:10,789 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,789 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:10,790 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,804 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:10,853 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 11:20:10,854 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:10,854 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:20:10,854 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:20:10,855 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:20:10,855 INFO L146 ILogger]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:20:10,855 INFO L146 ILogger]: Start difference. First operand 46 states and 49 transitions. Second operand 4 states. [2019-05-23 11:20:11,233 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:11,234 INFO L146 ILogger]: Finished difference Result 110 states and 117 transitions. [2019-05-23 11:20:11,235 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:11,235 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 34 [2019-05-23 11:20:11,236 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:11,236 INFO L146 ILogger]: With dead ends: 110 [2019-05-23 11:20:11,237 INFO L146 ILogger]: Without dead ends: 78 [2019-05-23 11:20:11,237 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:11,238 INFO L146 ILogger]: Start minimizeSevpa. Operand 78 states. [2019-05-23 11:20:11,243 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 78 to 48. [2019-05-23 11:20:11,243 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:20:11,244 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2019-05-23 11:20:11,244 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 34 [2019-05-23 11:20:11,244 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:11,244 INFO L146 ILogger]: Abstraction has 48 states and 51 transitions. [2019-05-23 11:20:11,245 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:20:11,245 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 51 transitions. [2019-05-23 11:20:11,246 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:20:11,246 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:11,246 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] [2019-05-23 11:20:11,246 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:11,246 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:11,247 INFO L146 ILogger]: Analyzing trace with hash -823319748, now seen corresponding path program 1 times [2019-05-23 11:20:11,247 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:11,247 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:11,248 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:11,248 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:11,248 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:11,271 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:11,335 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 11:20:11,335 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:11,335 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 11:20:11,357 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:11,387 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:11,389 INFO L146 ILogger]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:11,395 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:11,517 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 11:20:11,546 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:11,547 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:11,547 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:11,547 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:11,550 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:11,550 INFO L146 ILogger]: Start difference. First operand 48 states and 51 transitions. Second operand 5 states. [2019-05-23 11:20:11,664 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:11,664 INFO L146 ILogger]: Finished difference Result 91 states and 97 transitions. [2019-05-23 11:20:11,667 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:11,667 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 36 [2019-05-23 11:20:11,667 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:11,668 INFO L146 ILogger]: With dead ends: 91 [2019-05-23 11:20:11,668 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:20:11,670 INFO L146 ILogger]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:11,671 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:20:11,678 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 53. [2019-05-23 11:20:11,678 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:20:11,681 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2019-05-23 11:20:11,682 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 36 [2019-05-23 11:20:11,684 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:11,684 INFO L146 ILogger]: Abstraction has 53 states and 56 transitions. [2019-05-23 11:20:11,684 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:11,685 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 56 transitions. [2019-05-23 11:20:11,686 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:20:11,686 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:11,686 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:11,686 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:11,689 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:11,689 INFO L146 ILogger]: Analyzing trace with hash 815324197, now seen corresponding path program 2 times [2019-05-23 11:20:11,689 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:11,689 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:11,690 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:11,690 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:11,691 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:11,717 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:11,798 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:11,799 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:11,799 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 11:20:11,819 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:11,850 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-05-23 11:20:11,850 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:11,851 INFO L146 ILogger]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:11,854 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:12,201 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:20:12,202 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:12,212 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:12,212 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:12,212 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:20:12,246 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:20:12,274 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:20:12,274 INFO L146 ILogger]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2019-05-23 11:20:12,274 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:20:12,275 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:20:12,275 INFO L146 ILogger]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:12,276 INFO L146 ILogger]: Start difference. First operand 53 states and 56 transitions. Second operand 13 states. [2019-05-23 11:20:13,275 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:13,275 INFO L146 ILogger]: Finished difference Result 131 states and 138 transitions. [2019-05-23 11:20:13,279 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:13,279 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 41 [2019-05-23 11:20:13,279 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:13,280 INFO L146 ILogger]: With dead ends: 131 [2019-05-23 11:20:13,280 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:20:13,281 INFO L146 ILogger]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:13,282 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:20:13,287 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 61. [2019-05-23 11:20:13,287 INFO L146 ILogger]: Start removeUnreachable. Operand 61 states. [2019-05-23 11:20:13,288 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2019-05-23 11:20:13,288 INFO L146 ILogger]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 41 [2019-05-23 11:20:13,288 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:13,288 INFO L146 ILogger]: Abstraction has 61 states and 64 transitions. [2019-05-23 11:20:13,289 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:20:13,289 INFO L146 ILogger]: Start isEmpty. Operand 61 states and 64 transitions. [2019-05-23 11:20:13,290 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 56 [2019-05-23 11:20:13,290 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:13,291 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:13,291 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:13,291 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:13,291 INFO L146 ILogger]: Analyzing trace with hash 233277031, now seen corresponding path program 1 times [2019-05-23 11:20:13,292 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:13,292 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:13,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,293 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:13,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,310 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,497 INFO L146 ILogger]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:13,497 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:13,498 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 11:20:13,506 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:13,533 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,535 INFO L146 ILogger]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:13,537 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:13,645 INFO L146 ILogger]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:20:13,670 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:13,671 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2019-05-23 11:20:13,671 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:13,671 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:13,672 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:13,672 INFO L146 ILogger]: Start difference. First operand 61 states and 64 transitions. Second operand 9 states. [2019-05-23 11:20:13,923 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:13,923 INFO L146 ILogger]: Finished difference Result 163 states and 171 transitions. [2019-05-23 11:20:13,924 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:13,924 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 55 [2019-05-23 11:20:13,924 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:13,926 INFO L146 ILogger]: With dead ends: 163 [2019-05-23 11:20:13,926 INFO L146 ILogger]: Without dead ends: 126 [2019-05-23 11:20:13,928 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:13,928 INFO L146 ILogger]: Start minimizeSevpa. Operand 126 states. [2019-05-23 11:20:13,934 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 126 to 74. [2019-05-23 11:20:13,935 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:20:13,938 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2019-05-23 11:20:13,938 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 55 [2019-05-23 11:20:13,938 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:13,938 INFO L146 ILogger]: Abstraction has 74 states and 77 transitions. [2019-05-23 11:20:13,939 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:13,939 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 77 transitions. [2019-05-23 11:20:13,941 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 63 [2019-05-23 11:20:13,941 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:13,941 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 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] [2019-05-23 11:20:13,941 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:13,942 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:13,942 INFO L146 ILogger]: Analyzing trace with hash -1488982821, now seen corresponding path program 1 times [2019-05-23 11:20:13,942 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:13,942 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:13,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,943 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:13,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,985 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,089 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:20:14,090 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:14,090 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 11:20:14,101 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:14,123 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,124 INFO L146 ILogger]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:14,127 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:14,225 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:20:14,255 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:14,255 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:20:14,256 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:20:14,256 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:20:14,256 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:14,256 INFO L146 ILogger]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2019-05-23 11:20:14,349 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:14,349 INFO L146 ILogger]: Finished difference Result 128 states and 134 transitions. [2019-05-23 11:20:14,352 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:14,352 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 62 [2019-05-23 11:20:14,353 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:14,353 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:20:14,353 INFO L146 ILogger]: Without dead ends: 83 [2019-05-23 11:20:14,354 INFO L146 ILogger]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:14,354 INFO L146 ILogger]: Start minimizeSevpa. Operand 83 states. [2019-05-23 11:20:14,359 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 83 to 79. [2019-05-23 11:20:14,360 INFO L146 ILogger]: Start removeUnreachable. Operand 79 states. [2019-05-23 11:20:14,360 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2019-05-23 11:20:14,360 INFO L146 ILogger]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 62 [2019-05-23 11:20:14,361 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:14,361 INFO L146 ILogger]: Abstraction has 79 states and 82 transitions. [2019-05-23 11:20:14,361 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:20:14,361 INFO L146 ILogger]: Start isEmpty. Operand 79 states and 82 transitions. [2019-05-23 11:20:14,362 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:20:14,362 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:14,363 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 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] [2019-05-23 11:20:14,363 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:14,363 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:14,363 INFO L146 ILogger]: Analyzing trace with hash 1744692356, now seen corresponding path program 2 times [2019-05-23 11:20:14,363 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:14,364 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:14,364 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,365 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:14,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,379 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,477 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:20:14,477 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:14,477 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 11:20:14,488 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:14,536 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:14,536 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,537 INFO L146 ILogger]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:14,539 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:14,667 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:20:14,707 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:14,707 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:14,708 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:14,708 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:14,709 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:14,709 INFO L146 ILogger]: Start difference. First operand 79 states and 82 transitions. Second operand 9 states. [2019-05-23 11:20:14,917 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:14,917 INFO L146 ILogger]: Finished difference Result 133 states and 139 transitions. [2019-05-23 11:20:14,918 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:14,918 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 67 [2019-05-23 11:20:14,919 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:14,920 INFO L146 ILogger]: With dead ends: 133 [2019-05-23 11:20:14,920 INFO L146 ILogger]: Without dead ends: 88 [2019-05-23 11:20:14,920 INFO L146 ILogger]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:14,922 INFO L146 ILogger]: Start minimizeSevpa. Operand 88 states. [2019-05-23 11:20:14,928 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 88 to 84. [2019-05-23 11:20:14,928 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:20:14,929 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2019-05-23 11:20:14,929 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 67 [2019-05-23 11:20:14,933 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:14,933 INFO L146 ILogger]: Abstraction has 84 states and 87 transitions. [2019-05-23 11:20:14,933 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:14,933 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 87 transitions. [2019-05-23 11:20:14,934 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:20:14,935 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:14,935 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 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] [2019-05-23 11:20:14,935 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:14,935 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:14,936 INFO L146 ILogger]: Analyzing trace with hash 851791483, now seen corresponding path program 3 times [2019-05-23 11:20:14,936 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:14,936 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:14,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,937 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:14,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,951 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,053 INFO L146 ILogger]: Checked inductivity of 86 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:20:15,053 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:15,053 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 11:20:15,063 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:15,087 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:15,088 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,090 INFO L146 ILogger]: Trace formula consists of 81 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:20:15,093 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:15,110 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-05-23 11:20:15,111 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:15,117 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:15,118 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:15,118 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:20:15,154 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:15,155 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:20:15,155 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:15,168 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:15,169 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:15,169 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:20:15,311 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2019-05-23 11:20:15,311 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:15,324 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:15,326 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:15,326 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:20:15,510 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:20:15,510 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:15,520 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:15,521 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:15,522 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:20:15,668 INFO L146 ILogger]: Checked inductivity of 86 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:20:15,725 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:15,725 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-05-23 11:20:15,726 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:15,726 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:15,727 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:15,727 INFO L146 ILogger]: Start difference. First operand 84 states and 87 transitions. Second operand 19 states. [2019-05-23 11:20:17,117 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:17,117 INFO L146 ILogger]: Finished difference Result 211 states and 219 transitions. [2019-05-23 11:20:17,117 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:20:17,118 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 72 [2019-05-23 11:20:17,118 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:17,119 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:20:17,119 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:20:17,120 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=304, Invalid=1178, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:20:17,121 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:20:17,127 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 108. [2019-05-23 11:20:17,127 INFO L146 ILogger]: Start removeUnreachable. Operand 108 states. [2019-05-23 11:20:17,128 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2019-05-23 11:20:17,128 INFO L146 ILogger]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 72 [2019-05-23 11:20:17,129 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:17,129 INFO L146 ILogger]: Abstraction has 108 states and 112 transitions. [2019-05-23 11:20:17,129 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:17,129 INFO L146 ILogger]: Start isEmpty. Operand 108 states and 112 transitions. [2019-05-23 11:20:17,130 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 87 [2019-05-23 11:20:17,130 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:17,131 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 3, 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] [2019-05-23 11:20:17,131 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:17,131 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:17,131 INFO L146 ILogger]: Analyzing trace with hash -23521953, now seen corresponding path program 2 times [2019-05-23 11:20:17,131 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:17,131 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:17,132 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,132 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:17,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,148 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,269 INFO L146 ILogger]: Checked inductivity of 129 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:20:17,270 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,270 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 11:20:17,283 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:17,309 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:17,309 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,310 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,312 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,458 INFO L146 ILogger]: Checked inductivity of 129 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:20:17,478 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,478 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 14 [2019-05-23 11:20:17,479 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:20:17,479 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:20:17,479 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:17,480 INFO L146 ILogger]: Start difference. First operand 108 states and 112 transitions. Second operand 14 states. [2019-05-23 11:20:18,059 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:18,059 INFO L146 ILogger]: Finished difference Result 255 states and 265 transitions. [2019-05-23 11:20:18,060 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:20:18,060 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 86 [2019-05-23 11:20:18,060 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:18,062 INFO L146 ILogger]: With dead ends: 255 [2019-05-23 11:20:18,063 INFO L146 ILogger]: Without dead ends: 191 [2019-05-23 11:20:18,064 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:18,064 INFO L146 ILogger]: Start minimizeSevpa. Operand 191 states. [2019-05-23 11:20:18,069 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 191 to 121. [2019-05-23 11:20:18,069 INFO L146 ILogger]: Start removeUnreachable. Operand 121 states. [2019-05-23 11:20:18,070 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2019-05-23 11:20:18,070 INFO L146 ILogger]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 86 [2019-05-23 11:20:18,071 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:18,071 INFO L146 ILogger]: Abstraction has 121 states and 125 transitions. [2019-05-23 11:20:18,071 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:20:18,071 INFO L146 ILogger]: Start isEmpty. Operand 121 states and 125 transitions. [2019-05-23 11:20:18,072 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:20:18,072 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:18,073 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 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] [2019-05-23 11:20:18,073 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:18,073 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:18,073 INFO L146 ILogger]: Analyzing trace with hash -387530363, now seen corresponding path program 4 times [2019-05-23 11:20:18,073 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:18,074 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:18,074 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,074 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:18,075 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,091 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,328 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:18,328 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:18,328 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:20:18,337 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:18,375 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:18,375 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,377 INFO L146 ILogger]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:20:18,380 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:18,464 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:18,483 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:18,483 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:20:18,484 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:20:18,484 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:20:18,484 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:18,484 INFO L146 ILogger]: Start difference. First operand 121 states and 125 transitions. Second operand 12 states. [2019-05-23 11:20:18,569 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:18,569 INFO L146 ILogger]: Finished difference Result 202 states and 210 transitions. [2019-05-23 11:20:18,570 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:18,570 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 93 [2019-05-23 11:20:18,570 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:18,571 INFO L146 ILogger]: With dead ends: 202 [2019-05-23 11:20:18,571 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:20:18,572 INFO L146 ILogger]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:18,573 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:20:18,578 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 126. [2019-05-23 11:20:18,578 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:20:18,579 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2019-05-23 11:20:18,579 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 93 [2019-05-23 11:20:18,579 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:18,579 INFO L146 ILogger]: Abstraction has 126 states and 130 transitions. [2019-05-23 11:20:18,579 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:20:18,579 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 130 transitions. [2019-05-23 11:20:18,582 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:20:18,582 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:18,582 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 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] [2019-05-23 11:20:18,584 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:18,584 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:18,584 INFO L146 ILogger]: Analyzing trace with hash -972811076, now seen corresponding path program 5 times [2019-05-23 11:20:18,584 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:18,584 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:18,585 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,585 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:18,585 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,601 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,290 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:19,291 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:19,291 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 11:20:19,299 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:19,448 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:20:19,448 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,450 INFO L146 ILogger]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:20:19,452 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:19,547 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:19,577 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:19,577 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:20:19,578 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:20:19,578 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:20:19,578 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:19,579 INFO L146 ILogger]: Start difference. First operand 126 states and 130 transitions. Second operand 13 states. [2019-05-23 11:20:19,774 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,775 INFO L146 ILogger]: Finished difference Result 207 states and 215 transitions. [2019-05-23 11:20:19,776 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:20:19,776 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 98 [2019-05-23 11:20:19,776 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,777 INFO L146 ILogger]: With dead ends: 207 [2019-05-23 11:20:19,777 INFO L146 ILogger]: Without dead ends: 135 [2019-05-23 11:20:19,778 INFO L146 ILogger]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:19,778 INFO L146 ILogger]: Start minimizeSevpa. Operand 135 states. [2019-05-23 11:20:19,782 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 135 to 131. [2019-05-23 11:20:19,782 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:20:19,782 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2019-05-23 11:20:19,783 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 98 [2019-05-23 11:20:19,783 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,783 INFO L146 ILogger]: Abstraction has 131 states and 135 transitions. [2019-05-23 11:20:19,783 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:20:19,783 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 135 transitions. [2019-05-23 11:20:19,784 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:20:19,784 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,784 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 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] [2019-05-23 11:20:19,786 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,787 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,787 INFO L146 ILogger]: Analyzing trace with hash -1826804763, now seen corresponding path program 6 times [2019-05-23 11:20:19,787 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,787 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,791 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,791 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:19,791 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,818 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,097 INFO L146 ILogger]: Checked inductivity of 256 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:20,098 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,098 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 11:20:20,108 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:20,132 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:20:20,132 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,133 INFO L146 ILogger]: Trace formula consists of 116 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,136 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,142 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-05-23 11:20:20,142 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:20,151 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:20,151 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:20,152 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:20:20,191 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:20,191 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:20:20,192 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:20,195 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:20,195 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:20,196 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:20:20,371 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2019-05-23 11:20:20,372 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:20,380 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:20,381 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:20,381 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-05-23 11:20:20,486 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:20:20,487 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2019-05-23 11:20:20,488 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:20,511 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:20,512 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:20,512 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:22 [2019-05-23 11:20:20,638 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:20:20,639 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:20,646 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:20,646 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:20,647 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:20:20,780 INFO L146 ILogger]: Checked inductivity of 256 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2019-05-23 11:20:20,799 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,799 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:20:20,799 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:20:20,800 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:20:20,800 INFO L146 ILogger]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:20,800 INFO L146 ILogger]: Start difference. First operand 131 states and 135 transitions. Second operand 24 states. [2019-05-23 11:20:22,111 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:22,112 INFO L146 ILogger]: Finished difference Result 239 states and 248 transitions. [2019-05-23 11:20:22,112 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:20:22,112 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 103 [2019-05-23 11:20:22,113 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:22,114 INFO L146 ILogger]: With dead ends: 239 [2019-05-23 11:20:22,115 INFO L146 ILogger]: Without dead ends: 167 [2019-05-23 11:20:22,116 INFO L146 ILogger]: 0 DeclaredPredicates, 140 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=442, Invalid=1814, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:20:22,116 INFO L146 ILogger]: Start minimizeSevpa. Operand 167 states. [2019-05-23 11:20:22,120 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 167 to 133. [2019-05-23 11:20:22,120 INFO L146 ILogger]: Start removeUnreachable. Operand 133 states. [2019-05-23 11:20:22,121 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2019-05-23 11:20:22,121 INFO L146 ILogger]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 103 [2019-05-23 11:20:22,122 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:22,122 INFO L146 ILogger]: Abstraction has 133 states and 137 transitions. [2019-05-23 11:20:22,122 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:20:22,122 INFO L146 ILogger]: Start isEmpty. Operand 133 states and 137 transitions. [2019-05-23 11:20:22,123 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:20:22,123 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:22,123 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:22,123 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:22,124 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:22,124 INFO L146 ILogger]: Analyzing trace with hash 1600861455, now seen corresponding path program 1 times [2019-05-23 11:20:22,124 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:22,124 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:22,125 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,125 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:22,125 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,138 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:22,278 INFO L146 ILogger]: Checked inductivity of 304 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:22,279 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:22,279 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 11:20:22,295 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:22,334 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:22,335 INFO L146 ILogger]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:20:22,337 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:22,374 INFO L146 ILogger]: Checked inductivity of 304 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:22,393 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:22,394 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:20:22,394 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:20:22,395 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:20:22,395 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:22,395 INFO L146 ILogger]: Start difference. First operand 133 states and 137 transitions. Second operand 15 states. [2019-05-23 11:20:22,519 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:22,520 INFO L146 ILogger]: Finished difference Result 211 states and 219 transitions. [2019-05-23 11:20:22,522 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:22,522 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 113 [2019-05-23 11:20:22,522 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:22,523 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:20:22,523 INFO L146 ILogger]: Without dead ends: 142 [2019-05-23 11:20:22,524 INFO L146 ILogger]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:22,524 INFO L146 ILogger]: Start minimizeSevpa. Operand 142 states. [2019-05-23 11:20:22,532 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 142 to 138. [2019-05-23 11:20:22,532 INFO L146 ILogger]: Start removeUnreachable. Operand 138 states. [2019-05-23 11:20:22,532 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2019-05-23 11:20:22,533 INFO L146 ILogger]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 113 [2019-05-23 11:20:22,533 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:22,533 INFO L146 ILogger]: Abstraction has 138 states and 142 transitions. [2019-05-23 11:20:22,533 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:20:22,533 INFO L146 ILogger]: Start isEmpty. Operand 138 states and 142 transitions. [2019-05-23 11:20:22,534 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:20:22,535 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:22,535 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:22,535 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:22,535 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:22,535 INFO L146 ILogger]: Analyzing trace with hash -662845754, now seen corresponding path program 2 times [2019-05-23 11:20:22,536 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:22,536 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:22,536 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,536 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:22,537 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,549 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:23,492 INFO L146 ILogger]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:23,493 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:23,493 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 11:20:23,501 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:23,541 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:23,541 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:23,542 INFO L146 ILogger]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:23,544 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:23,633 INFO L146 ILogger]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:23,663 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:23,663 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:20:23,664 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:23,664 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:23,664 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:23,665 INFO L146 ILogger]: Start difference. First operand 138 states and 142 transitions. Second operand 16 states. [2019-05-23 11:20:23,815 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:23,815 INFO L146 ILogger]: Finished difference Result 216 states and 224 transitions. [2019-05-23 11:20:23,816 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:23,816 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 118 [2019-05-23 11:20:23,816 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:23,817 INFO L146 ILogger]: With dead ends: 216 [2019-05-23 11:20:23,817 INFO L146 ILogger]: Without dead ends: 147 [2019-05-23 11:20:23,818 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:23,818 INFO L146 ILogger]: Start minimizeSevpa. Operand 147 states. [2019-05-23 11:20:23,821 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 147 to 143. [2019-05-23 11:20:23,822 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:20:23,822 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2019-05-23 11:20:23,823 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 118 [2019-05-23 11:20:23,823 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:23,823 INFO L146 ILogger]: Abstraction has 143 states and 147 transitions. [2019-05-23 11:20:23,823 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:23,823 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 147 transitions. [2019-05-23 11:20:23,824 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:20:23,824 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:23,825 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:23,825 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:23,825 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:23,825 INFO L146 ILogger]: Analyzing trace with hash -509300881, now seen corresponding path program 3 times [2019-05-23 11:20:23,825 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:23,825 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:23,826 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:23,826 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:23,826 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:23,847 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,052 INFO L146 ILogger]: Checked inductivity of 421 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:24,052 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:24,052 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 11:20:24,061 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:24,081 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:24,082 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,083 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:20:24,085 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:24,262 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:20:24,262 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:24,265 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:24,265 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:24,265 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:20:24,326 INFO L146 ILogger]: Checked inductivity of 421 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2019-05-23 11:20:24,345 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:24,345 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 26 [2019-05-23 11:20:24,345 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:20:24,346 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:20:24,346 INFO L146 ILogger]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:24,346 INFO L146 ILogger]: Start difference. First operand 143 states and 147 transitions. Second operand 26 states. [2019-05-23 11:20:25,130 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:25,130 INFO L146 ILogger]: Finished difference Result 266 states and 274 transitions. [2019-05-23 11:20:25,131 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:20:25,131 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 123 [2019-05-23 11:20:25,131 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:25,132 INFO L146 ILogger]: With dead ends: 266 [2019-05-23 11:20:25,132 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:20:25,133 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=450, Invalid=1620, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:20:25,134 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:20:25,137 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 148. [2019-05-23 11:20:25,137 INFO L146 ILogger]: Start removeUnreachable. Operand 148 states. [2019-05-23 11:20:25,138 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 148 states to 148 states and 151 transitions. [2019-05-23 11:20:25,138 INFO L146 ILogger]: Start accepts. Automaton has 148 states and 151 transitions. Word has length 123 [2019-05-23 11:20:25,138 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:25,139 INFO L146 ILogger]: Abstraction has 148 states and 151 transitions. [2019-05-23 11:20:25,139 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:20:25,139 INFO L146 ILogger]: Start isEmpty. Operand 148 states and 151 transitions. [2019-05-23 11:20:25,140 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 140 [2019-05-23 11:20:25,140 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,140 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 3, 3, 3, 3, 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] [2019-05-23 11:20:25,140 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,140 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,141 INFO L146 ILogger]: Analyzing trace with hash -442152944, now seen corresponding path program 4 times [2019-05-23 11:20:25,141 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,141 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,141 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,141 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:25,141 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,155 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,376 INFO L146 ILogger]: Checked inductivity of 503 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:20:25,376 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:25,376 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 11:20:25,386 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:25,418 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:25,418 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,420 INFO L146 ILogger]: Trace formula consists of 144 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:20:25,422 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:25,636 INFO L146 ILogger]: treesize reduction 35, result has 20.5 percent of original size [2019-05-23 11:20:25,636 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 19 treesize of output 19 [2019-05-23 11:20:25,637 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:25,659 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:25,659 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:25,659 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:20:25,969 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:25,969 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:20:25,970 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:25,971 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:25,971 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:25,971 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:20:26,051 INFO L146 ILogger]: Checked inductivity of 503 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2019-05-23 11:20:26,070 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:26,070 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2019-05-23 11:20:26,071 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:20:26,071 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:20:26,071 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:26,072 INFO L146 ILogger]: Start difference. First operand 148 states and 151 transitions. Second operand 30 states. [2019-05-23 11:20:27,215 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:27,215 INFO L146 ILogger]: Finished difference Result 318 states and 326 transitions. [2019-05-23 11:20:27,215 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:20:27,216 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 139 [2019-05-23 11:20:27,216 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:27,217 INFO L146 ILogger]: With dead ends: 318 [2019-05-23 11:20:27,218 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:20:27,219 INFO L146 ILogger]: 0 DeclaredPredicates, 180 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=536, Invalid=2434, Unknown=0, NotChecked=0, Total=2970 [2019-05-23 11:20:27,220 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:20:27,224 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 175. [2019-05-23 11:20:27,224 INFO L146 ILogger]: Start removeUnreachable. Operand 175 states. [2019-05-23 11:20:27,225 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2019-05-23 11:20:27,225 INFO L146 ILogger]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 139 [2019-05-23 11:20:27,225 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:27,225 INFO L146 ILogger]: Abstraction has 175 states and 179 transitions. [2019-05-23 11:20:27,225 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:20:27,225 INFO L146 ILogger]: Start isEmpty. Operand 175 states and 179 transitions. [2019-05-23 11:20:27,226 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 154 [2019-05-23 11:20:27,226 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:27,226 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:20:27,227 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:27,227 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:27,227 INFO L146 ILogger]: Analyzing trace with hash -834083566, now seen corresponding path program 1 times [2019-05-23 11:20:27,227 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:27,227 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:27,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,228 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:27,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,257 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,469 INFO L146 ILogger]: Checked inductivity of 595 backedges. 3 proven. 39 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2019-05-23 11:20:27,469 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:27,469 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 11:20:27,477 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:27,513 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,514 INFO L146 ILogger]: Trace formula consists of 226 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:20:27,515 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:27,703 INFO L146 ILogger]: Checked inductivity of 595 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:20:27,722 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:27,722 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 18] total 23 [2019-05-23 11:20:27,723 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:20:27,723 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:20:27,723 INFO L146 ILogger]: CoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:27,723 INFO L146 ILogger]: Start difference. First operand 175 states and 179 transitions. Second operand 23 states. [2019-05-23 11:20:28,244 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:28,244 INFO L146 ILogger]: Finished difference Result 365 states and 375 transitions. [2019-05-23 11:20:28,245 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:20:28,245 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 153 [2019-05-23 11:20:28,245 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:28,247 INFO L146 ILogger]: With dead ends: 365 [2019-05-23 11:20:28,247 INFO L146 ILogger]: Without dead ends: 274 [2019-05-23 11:20:28,248 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=549, Invalid=1257, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:20:28,249 INFO L146 ILogger]: Start minimizeSevpa. Operand 274 states. [2019-05-23 11:20:28,253 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 274 to 188. [2019-05-23 11:20:28,253 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:20:28,254 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2019-05-23 11:20:28,254 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 153 [2019-05-23 11:20:28,255 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:28,255 INFO L146 ILogger]: Abstraction has 188 states and 192 transitions. [2019-05-23 11:20:28,255 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:20:28,255 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 192 transitions. [2019-05-23 11:20:28,256 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 161 [2019-05-23 11:20:28,256 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:28,256 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:20:28,256 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:28,256 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:28,257 INFO L146 ILogger]: Analyzing trace with hash -15090746, now seen corresponding path program 5 times [2019-05-23 11:20:28,257 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:28,257 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:28,257 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:28,258 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:28,258 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:28,271 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,514 INFO L146 ILogger]: Checked inductivity of 677 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-05-23 11:20:28,514 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:28,514 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 11:20:28,524 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:28,686 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2019-05-23 11:20:28,686 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,689 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:20:28,691 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:28,748 INFO L146 ILogger]: Checked inductivity of 677 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-05-23 11:20:28,773 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:28,773 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:20:28,773 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:20:28,774 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:20:28,774 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:28,774 INFO L146 ILogger]: Start difference. First operand 188 states and 192 transitions. Second operand 20 states. [2019-05-23 11:20:29,532 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:29,532 INFO L146 ILogger]: Finished difference Result 296 states and 304 transitions. [2019-05-23 11:20:29,533 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:20:29,533 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 160 [2019-05-23 11:20:29,533 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:29,534 INFO L146 ILogger]: With dead ends: 296 [2019-05-23 11:20:29,534 INFO L146 ILogger]: Without dead ends: 197 [2019-05-23 11:20:29,535 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:29,535 INFO L146 ILogger]: Start minimizeSevpa. Operand 197 states. [2019-05-23 11:20:29,539 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 197 to 193. [2019-05-23 11:20:29,540 INFO L146 ILogger]: Start removeUnreachable. Operand 193 states. [2019-05-23 11:20:29,540 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 193 states to 193 states and 197 transitions. [2019-05-23 11:20:29,541 INFO L146 ILogger]: Start accepts. Automaton has 193 states and 197 transitions. Word has length 160 [2019-05-23 11:20:29,541 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:29,542 INFO L146 ILogger]: Abstraction has 193 states and 197 transitions. [2019-05-23 11:20:29,542 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:20:29,542 INFO L146 ILogger]: Start isEmpty. Operand 193 states and 197 transitions. [2019-05-23 11:20:29,543 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:20:29,543 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:29,543 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:20:29,543 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:29,543 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:29,544 INFO L146 ILogger]: Analyzing trace with hash -581910225, now seen corresponding path program 6 times [2019-05-23 11:20:29,544 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:29,544 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:29,545 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,545 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:29,545 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,569 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,912 INFO L146 ILogger]: Checked inductivity of 758 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-05-23 11:20:29,912 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:29,912 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 11:20:29,928 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:29,999 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:30,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:30,001 INFO L146 ILogger]: Trace formula consists of 166 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:20:30,005 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:30,020 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-05-23 11:20:30,020 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,025 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,025 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,026 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:20:30,068 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,069 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:20:30,070 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,072 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,073 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,073 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2019-05-23 11:20:30,192 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2019-05-23 11:20:30,193 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,203 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,203 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,204 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2019-05-23 11:20:30,279 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,280 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 63 [2019-05-23 11:20:30,281 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,305 INFO L146 ILogger]: treesize reduction 30, result has 55.2 percent of original size [2019-05-23 11:20:30,305 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,306 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:23 [2019-05-23 11:20:30,503 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2019-05-23 11:20:30,503 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,513 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,513 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,513 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2019-05-23 11:20:30,686 INFO L146 ILogger]: Checked inductivity of 758 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2019-05-23 11:20:30,705 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:30,705 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 35 [2019-05-23 11:20:30,706 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:20:30,706 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:20:30,706 INFO L146 ILogger]: CoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:20:30,707 INFO L146 ILogger]: Start difference. First operand 193 states and 197 transitions. Second operand 35 states. [2019-05-23 11:20:33,130 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:33,130 INFO L146 ILogger]: Finished difference Result 344 states and 353 transitions. [2019-05-23 11:20:33,131 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:20:33,131 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 165 [2019-05-23 11:20:33,131 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:33,133 INFO L146 ILogger]: With dead ends: 344 [2019-05-23 11:20:33,133 INFO L146 ILogger]: Without dead ends: 245 [2019-05-23 11:20:33,136 INFO L146 ILogger]: 0 DeclaredPredicates, 222 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=895, Invalid=4217, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:20:33,136 INFO L146 ILogger]: Start minimizeSevpa. Operand 245 states. [2019-05-23 11:20:33,140 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 245 to 195. [2019-05-23 11:20:33,140 INFO L146 ILogger]: Start removeUnreachable. Operand 195 states. [2019-05-23 11:20:33,140 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 195 states to 195 states and 199 transitions. [2019-05-23 11:20:33,141 INFO L146 ILogger]: Start accepts. Automaton has 195 states and 199 transitions. Word has length 165 [2019-05-23 11:20:33,141 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:33,141 INFO L146 ILogger]: Abstraction has 195 states and 199 transitions. [2019-05-23 11:20:33,141 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:20:33,141 INFO L146 ILogger]: Start isEmpty. Operand 195 states and 199 transitions. [2019-05-23 11:20:33,142 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 176 [2019-05-23 11:20:33,142 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:33,142 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:33,143 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:33,143 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:33,143 INFO L146 ILogger]: Analyzing trace with hash 735465019, now seen corresponding path program 7 times [2019-05-23 11:20:33,143 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:33,143 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:33,144 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:33,144 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:33,144 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:33,157 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:33,438 INFO L146 ILogger]: Checked inductivity of 846 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:20:33,438 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:33,438 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 11:20:33,451 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:33,487 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:33,489 INFO L146 ILogger]: Trace formula consists of 258 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:20:33,490 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:33,520 INFO L146 ILogger]: Checked inductivity of 846 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:20:33,539 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:33,539 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:20:33,539 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:20:33,540 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:20:33,540 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:33,540 INFO L146 ILogger]: Start difference. First operand 195 states and 199 transitions. Second operand 22 states. [2019-05-23 11:20:33,666 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:33,667 INFO L146 ILogger]: Finished difference Result 300 states and 308 transitions. [2019-05-23 11:20:33,675 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:20:33,675 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 175 [2019-05-23 11:20:33,675 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:33,676 INFO L146 ILogger]: With dead ends: 300 [2019-05-23 11:20:33,676 INFO L146 ILogger]: Without dead ends: 204 [2019-05-23 11:20:33,677 INFO L146 ILogger]: 0 DeclaredPredicates, 195 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:33,677 INFO L146 ILogger]: Start minimizeSevpa. Operand 204 states. [2019-05-23 11:20:33,682 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 204 to 200. [2019-05-23 11:20:33,682 INFO L146 ILogger]: Start removeUnreachable. Operand 200 states. [2019-05-23 11:20:33,682 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 200 states to 200 states and 204 transitions. [2019-05-23 11:20:33,683 INFO L146 ILogger]: Start accepts. Automaton has 200 states and 204 transitions. Word has length 175 [2019-05-23 11:20:33,683 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:33,683 INFO L146 ILogger]: Abstraction has 200 states and 204 transitions. [2019-05-23 11:20:33,683 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:20:33,683 INFO L146 ILogger]: Start isEmpty. Operand 200 states and 204 transitions. [2019-05-23 11:20:33,684 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:20:33,684 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:33,684 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:33,685 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:33,685 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:33,685 INFO L146 ILogger]: Analyzing trace with hash -1763137102, now seen corresponding path program 8 times [2019-05-23 11:20:33,685 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:33,685 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:33,686 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:33,686 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:33,686 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:33,709 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,031 INFO L146 ILogger]: Checked inductivity of 937 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:20:34,031 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:34,031 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:34,040 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:34,081 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:34,081 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,082 INFO L146 ILogger]: Trace formula consists of 265 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:20:34,084 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:34,135 INFO L146 ILogger]: Checked inductivity of 937 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:20:34,154 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:34,154 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:20:34,154 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:20:34,155 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:20:34,155 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:34,155 INFO L146 ILogger]: Start difference. First operand 200 states and 204 transitions. Second operand 23 states. [2019-05-23 11:20:34,268 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:34,269 INFO L146 ILogger]: Finished difference Result 305 states and 313 transitions. [2019-05-23 11:20:34,269 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:20:34,269 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 180 [2019-05-23 11:20:34,270 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:34,270 INFO L146 ILogger]: With dead ends: 305 [2019-05-23 11:20:34,270 INFO L146 ILogger]: Without dead ends: 209 [2019-05-23 11:20:34,271 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:34,271 INFO L146 ILogger]: Start minimizeSevpa. Operand 209 states. [2019-05-23 11:20:34,276 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 209 to 205. [2019-05-23 11:20:34,276 INFO L146 ILogger]: Start removeUnreachable. Operand 205 states. [2019-05-23 11:20:34,277 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2019-05-23 11:20:34,277 INFO L146 ILogger]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 180 [2019-05-23 11:20:34,277 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:34,277 INFO L146 ILogger]: Abstraction has 205 states and 209 transitions. [2019-05-23 11:20:34,277 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:20:34,277 INFO L146 ILogger]: Start isEmpty. Operand 205 states and 209 transitions. [2019-05-23 11:20:34,278 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 186 [2019-05-23 11:20:34,278 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:34,278 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:34,279 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:34,279 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:34,279 INFO L146 ILogger]: Analyzing trace with hash 1529340059, now seen corresponding path program 9 times [2019-05-23 11:20:34,279 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:34,279 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:34,280 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:34,280 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:34,280 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:34,294 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,554 INFO L146 ILogger]: Checked inductivity of 1033 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:20:34,554 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:34,554 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:34,563 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:34,590 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:20:34,591 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,592 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:20:34,595 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:34,976 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:20:34,976 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:34,977 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:34,977 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:34,978 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:20:35,055 INFO L146 ILogger]: Checked inductivity of 1033 backedges. 16 proven. 47 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2019-05-23 11:20:35,074 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:35,074 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14] total 35 [2019-05-23 11:20:35,075 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:20:35,075 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:20:35,075 INFO L146 ILogger]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:20:35,075 INFO L146 ILogger]: Start difference. First operand 205 states and 209 transitions. Second operand 35 states. [2019-05-23 11:20:37,006 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:37,006 INFO L146 ILogger]: Finished difference Result 371 states and 379 transitions. [2019-05-23 11:20:37,006 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:20:37,007 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 185 [2019-05-23 11:20:37,007 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:37,008 INFO L146 ILogger]: With dead ends: 371 [2019-05-23 11:20:37,008 INFO L146 ILogger]: Without dead ends: 235 [2019-05-23 11:20:37,009 INFO L146 ILogger]: 0 DeclaredPredicates, 234 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=864, Invalid=2918, Unknown=0, NotChecked=0, Total=3782 [2019-05-23 11:20:37,009 INFO L146 ILogger]: Start minimizeSevpa. Operand 235 states. [2019-05-23 11:20:37,014 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 235 to 210. [2019-05-23 11:20:37,015 INFO L146 ILogger]: Start removeUnreachable. Operand 210 states. [2019-05-23 11:20:37,015 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 210 states to 210 states and 213 transitions. [2019-05-23 11:20:37,015 INFO L146 ILogger]: Start accepts. Automaton has 210 states and 213 transitions. Word has length 185 [2019-05-23 11:20:37,015 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:37,016 INFO L146 ILogger]: Abstraction has 210 states and 213 transitions. [2019-05-23 11:20:37,017 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:20:37,017 INFO L146 ILogger]: Start isEmpty. Operand 210 states and 213 transitions. [2019-05-23 11:20:37,018 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 202 [2019-05-23 11:20:37,018 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:37,018 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:37,018 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:37,019 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:37,019 INFO L146 ILogger]: Analyzing trace with hash 330774874, now seen corresponding path program 10 times [2019-05-23 11:20:37,019 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:37,019 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:37,020 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,020 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:37,020 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,040 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,745 INFO L146 ILogger]: Checked inductivity of 1161 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-05-23 11:20:37,746 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:37,746 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:37,754 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:37,792 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:37,792 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,793 INFO L146 ILogger]: Trace formula consists of 206 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:20:37,796 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:38,878 INFO L146 ILogger]: treesize reduction 35, result has 20.5 percent of original size [2019-05-23 11:20:38,878 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 19 treesize of output 19 [2019-05-23 11:20:38,879 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:38,882 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:38,882 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:38,882 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:20:39,069 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:39,069 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:20:39,070 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:39,075 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:39,075 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:39,075 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:20:39,200 INFO L146 ILogger]: Checked inductivity of 1161 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2019-05-23 11:20:39,218 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:39,218 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18] total 40 [2019-05-23 11:20:39,218 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:20:39,219 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:20:39,219 INFO L146 ILogger]: CoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:20:39,219 INFO L146 ILogger]: Start difference. First operand 210 states and 213 transitions. Second operand 40 states. [2019-05-23 11:20:41,351 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:41,351 INFO L146 ILogger]: Finished difference Result 423 states and 431 transitions. [2019-05-23 11:20:41,353 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-05-23 11:20:41,353 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 201 [2019-05-23 11:20:41,353 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:41,354 INFO L146 ILogger]: With dead ends: 423 [2019-05-23 11:20:41,355 INFO L146 ILogger]: Without dead ends: 327 [2019-05-23 11:20:41,357 INFO L146 ILogger]: 0 DeclaredPredicates, 255 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1154 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=955, Invalid=4015, Unknown=0, NotChecked=0, Total=4970 [2019-05-23 11:20:41,357 INFO L146 ILogger]: Start minimizeSevpa. Operand 327 states. [2019-05-23 11:20:41,363 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 327 to 237. [2019-05-23 11:20:41,363 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:20:41,363 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2019-05-23 11:20:41,364 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 201 [2019-05-23 11:20:41,364 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:41,364 INFO L146 ILogger]: Abstraction has 237 states and 241 transitions. [2019-05-23 11:20:41,364 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:20:41,364 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 241 transitions. [2019-05-23 11:20:41,365 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:20:41,365 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:41,366 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:41,366 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:41,366 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:41,366 INFO L146 ILogger]: Analyzing trace with hash 1481498046, now seen corresponding path program 2 times [2019-05-23 11:20:41,366 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:41,366 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:41,367 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:41,367 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:41,367 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:41,384 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,001 INFO L146 ILogger]: Checked inductivity of 1297 backedges. 4 proven. 74 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2019-05-23 11:20:42,001 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:42,001 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:42,009 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:42,057 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:42,057 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,058 INFO L146 ILogger]: Trace formula consists of 311 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:20:42,060 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:42,434 INFO L146 ILogger]: Checked inductivity of 1297 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-05-23 11:20:42,452 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:42,453 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 25] total 31 [2019-05-23 11:20:42,453 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:42,453 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:42,454 INFO L146 ILogger]: CoverageRelationStatistics Valid=322, Invalid=608, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:42,454 INFO L146 ILogger]: Start difference. First operand 237 states and 241 transitions. Second operand 31 states. [2019-05-23 11:20:43,293 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:43,294 INFO L146 ILogger]: Finished difference Result 470 states and 480 transitions. [2019-05-23 11:20:43,294 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:20:43,294 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 215 [2019-05-23 11:20:43,295 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:43,297 INFO L146 ILogger]: With dead ends: 470 [2019-05-23 11:20:43,297 INFO L146 ILogger]: Without dead ends: 352 [2019-05-23 11:20:43,299 INFO L146 ILogger]: 0 DeclaredPredicates, 250 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1052, Invalid=2370, Unknown=0, NotChecked=0, Total=3422 [2019-05-23 11:20:43,299 INFO L146 ILogger]: Start minimizeSevpa. Operand 352 states. [2019-05-23 11:20:43,306 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 352 to 250. [2019-05-23 11:20:43,306 INFO L146 ILogger]: Start removeUnreachable. Operand 250 states. [2019-05-23 11:20:43,307 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 250 states to 250 states and 254 transitions. [2019-05-23 11:20:43,307 INFO L146 ILogger]: Start accepts. Automaton has 250 states and 254 transitions. Word has length 215 [2019-05-23 11:20:43,307 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:43,308 INFO L146 ILogger]: Abstraction has 250 states and 254 transitions. [2019-05-23 11:20:43,308 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:43,308 INFO L146 ILogger]: Start isEmpty. Operand 250 states and 254 transitions. [2019-05-23 11:20:43,309 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 223 [2019-05-23 11:20:43,309 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:43,309 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:43,310 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:43,310 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:43,310 INFO L146 ILogger]: Analyzing trace with hash 1075406834, now seen corresponding path program 11 times [2019-05-23 11:20:43,310 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:43,310 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:43,311 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,311 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:43,311 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,342 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,114 INFO L146 ILogger]: Checked inductivity of 1416 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2019-05-23 11:20:44,115 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:44,115 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:44,124 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:45,279 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-05-23 11:20:45,279 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,282 INFO L146 ILogger]: Trace formula consists of 321 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:20:45,285 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:45,351 INFO L146 ILogger]: Checked inductivity of 1416 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2019-05-23 11:20:45,371 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:45,372 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:20:45,372 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:20:45,372 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:20:45,373 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:45,373 INFO L146 ILogger]: Start difference. First operand 250 states and 254 transitions. Second operand 27 states. [2019-05-23 11:20:45,512 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:45,512 INFO L146 ILogger]: Finished difference Result 385 states and 393 transitions. [2019-05-23 11:20:45,512 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:20:45,512 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 222 [2019-05-23 11:20:45,513 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:45,514 INFO L146 ILogger]: With dead ends: 385 [2019-05-23 11:20:45,514 INFO L146 ILogger]: Without dead ends: 259 [2019-05-23 11:20:45,515 INFO L146 ILogger]: 0 DeclaredPredicates, 247 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:45,515 INFO L146 ILogger]: Start minimizeSevpa. Operand 259 states. [2019-05-23 11:20:45,520 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 259 to 255. [2019-05-23 11:20:45,520 INFO L146 ILogger]: Start removeUnreachable. Operand 255 states. [2019-05-23 11:20:45,521 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 255 states to 255 states and 259 transitions. [2019-05-23 11:20:45,521 INFO L146 ILogger]: Start accepts. Automaton has 255 states and 259 transitions. Word has length 222 [2019-05-23 11:20:45,521 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:45,521 INFO L146 ILogger]: Abstraction has 255 states and 259 transitions. [2019-05-23 11:20:45,521 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:20:45,521 INFO L146 ILogger]: Start isEmpty. Operand 255 states and 259 transitions. [2019-05-23 11:20:45,522 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 228 [2019-05-23 11:20:45,523 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:45,523 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:45,523 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:45,523 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:45,523 INFO L146 ILogger]: Analyzing trace with hash -1149047909, now seen corresponding path program 12 times [2019-05-23 11:20:45,524 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:45,524 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:45,524 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,524 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:45,525 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,542 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,534 INFO L146 ILogger]: Checked inductivity of 1532 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2019-05-23 11:20:46,535 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:46,535 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:46,544 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:46,720 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:20:46,721 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,726 INFO L146 ILogger]: Trace formula consists of 216 conjuncts, 39 conjunts are in the unsatisfiable core [2019-05-23 11:20:46,729 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:46,740 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-05-23 11:20:46,740 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:46,746 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:46,746 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:46,746 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:20:46,782 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:46,782 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:20:46,783 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:46,792 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:46,793 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:46,793 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:20:46,979 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2019-05-23 11:20:46,980 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:46,990 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:46,991 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:46,991 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-05-23 11:20:47,062 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:20:47,067 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2019-05-23 11:20:47,068 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:47,080 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:47,081 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:47,081 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2019-05-23 11:20:47,333 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:20:47,333 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:47,336 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:47,336 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:47,336 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:20:47,580 INFO L146 ILogger]: Checked inductivity of 1532 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2019-05-23 11:20:47,598 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:47,599 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19] total 44 [2019-05-23 11:20:47,599 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:20:47,600 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:20:47,600 INFO L146 ILogger]: CoverageRelationStatistics Valid=410, Invalid=1482, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:20:47,600 INFO L146 ILogger]: Start difference. First operand 255 states and 259 transitions. Second operand 44 states. [2019-05-23 11:20:50,308 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:50,309 INFO L146 ILogger]: Finished difference Result 449 states and 458 transitions. [2019-05-23 11:20:50,309 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:20:50,309 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 227 [2019-05-23 11:20:50,310 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:50,312 INFO L146 ILogger]: With dead ends: 449 [2019-05-23 11:20:50,312 INFO L146 ILogger]: Without dead ends: 323 [2019-05-23 11:20:50,315 INFO L146 ILogger]: 0 DeclaredPredicates, 300 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1429, Invalid=6581, Unknown=0, NotChecked=0, Total=8010 [2019-05-23 11:20:50,316 INFO L146 ILogger]: Start minimizeSevpa. Operand 323 states. [2019-05-23 11:20:50,321 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 323 to 257. [2019-05-23 11:20:50,321 INFO L146 ILogger]: Start removeUnreachable. Operand 257 states. [2019-05-23 11:20:50,322 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 257 states to 257 states and 261 transitions. [2019-05-23 11:20:50,322 INFO L146 ILogger]: Start accepts. Automaton has 257 states and 261 transitions. Word has length 227 [2019-05-23 11:20:50,322 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:50,322 INFO L146 ILogger]: Abstraction has 257 states and 261 transitions. [2019-05-23 11:20:50,323 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:20:50,323 INFO L146 ILogger]: Start isEmpty. Operand 257 states and 261 transitions. [2019-05-23 11:20:50,324 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 238 [2019-05-23 11:20:50,324 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:50,324 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:50,325 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:50,325 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:50,325 INFO L146 ILogger]: Analyzing trace with hash -1774806139, now seen corresponding path program 13 times [2019-05-23 11:20:50,325 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:50,325 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:50,326 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,326 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:50,326 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,344 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,533 INFO L146 ILogger]: Checked inductivity of 1660 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-05-23 11:20:51,533 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:51,534 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:51,542 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:51,600 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,602 INFO L146 ILogger]: Trace formula consists of 343 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:20:51,604 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:51,675 INFO L146 ILogger]: Checked inductivity of 1660 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-05-23 11:20:51,694 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:51,694 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:20:51,695 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:20:51,695 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:20:51,695 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:51,695 INFO L146 ILogger]: Start difference. First operand 257 states and 261 transitions. Second operand 29 states. [2019-05-23 11:20:51,850 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:51,851 INFO L146 ILogger]: Finished difference Result 389 states and 397 transitions. [2019-05-23 11:20:51,851 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:20:51,851 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 237 [2019-05-23 11:20:51,851 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:51,852 INFO L146 ILogger]: With dead ends: 389 [2019-05-23 11:20:51,853 INFO L146 ILogger]: Without dead ends: 266 [2019-05-23 11:20:51,853 INFO L146 ILogger]: 0 DeclaredPredicates, 264 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:51,854 INFO L146 ILogger]: Start minimizeSevpa. Operand 266 states. [2019-05-23 11:20:51,858 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 266 to 262. [2019-05-23 11:20:51,858 INFO L146 ILogger]: Start removeUnreachable. Operand 262 states. [2019-05-23 11:20:51,858 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 262 states to 262 states and 266 transitions. [2019-05-23 11:20:51,858 INFO L146 ILogger]: Start accepts. Automaton has 262 states and 266 transitions. Word has length 237 [2019-05-23 11:20:51,859 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:51,859 INFO L146 ILogger]: Abstraction has 262 states and 266 transitions. [2019-05-23 11:20:51,859 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:20:51,859 INFO L146 ILogger]: Start isEmpty. Operand 262 states and 266 transitions. [2019-05-23 11:20:51,860 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 243 [2019-05-23 11:20:51,860 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:51,860 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:51,861 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:51,861 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:51,861 INFO L146 ILogger]: Analyzing trace with hash 1233268924, now seen corresponding path program 14 times [2019-05-23 11:20:51,861 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:51,861 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:51,862 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,862 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:51,862 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,879 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:52,269 INFO L146 ILogger]: Checked inductivity of 1786 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-05-23 11:20:52,269 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:52,269 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:52,278 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:52,332 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:52,332 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:52,333 INFO L146 ILogger]: Trace formula consists of 350 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:20:52,336 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:52,470 INFO L146 ILogger]: Checked inductivity of 1786 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-05-23 11:20:52,488 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:52,488 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-05-23 11:20:52,489 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:20:52,489 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:20:52,490 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:52,490 INFO L146 ILogger]: Start difference. First operand 262 states and 266 transitions. Second operand 30 states. [2019-05-23 11:20:52,655 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:52,655 INFO L146 ILogger]: Finished difference Result 394 states and 402 transitions. [2019-05-23 11:20:52,655 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:20:52,655 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 242 [2019-05-23 11:20:52,656 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:52,657 INFO L146 ILogger]: With dead ends: 394 [2019-05-23 11:20:52,657 INFO L146 ILogger]: Without dead ends: 271 [2019-05-23 11:20:52,658 INFO L146 ILogger]: 0 DeclaredPredicates, 270 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:52,658 INFO L146 ILogger]: Start minimizeSevpa. Operand 271 states. [2019-05-23 11:20:52,663 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 271 to 267. [2019-05-23 11:20:52,663 INFO L146 ILogger]: Start removeUnreachable. Operand 267 states. [2019-05-23 11:20:52,664 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 267 states to 267 states and 271 transitions. [2019-05-23 11:20:52,664 INFO L146 ILogger]: Start accepts. Automaton has 267 states and 271 transitions. Word has length 242 [2019-05-23 11:20:52,664 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:52,664 INFO L146 ILogger]: Abstraction has 267 states and 271 transitions. [2019-05-23 11:20:52,664 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:20:52,664 INFO L146 ILogger]: Start isEmpty. Operand 267 states and 271 transitions. [2019-05-23 11:20:52,665 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 248 [2019-05-23 11:20:52,666 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:52,666 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:52,666 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:52,666 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:52,667 INFO L146 ILogger]: Analyzing trace with hash -1928968731, now seen corresponding path program 15 times [2019-05-23 11:20:52,667 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:52,667 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:52,667 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:52,668 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:52,668 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:52,685 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,200 INFO L146 ILogger]: Checked inductivity of 1917 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-05-23 11:20:53,201 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:53,201 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:53,210 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:53,267 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:20:53,268 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,269 INFO L146 ILogger]: Trace formula consists of 189 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:20:53,274 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:53,615 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:20:53,616 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:53,618 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:53,618 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:53,618 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:20:53,754 INFO L146 ILogger]: Checked inductivity of 1917 backedges. 24 proven. 111 refuted. 0 times theorem prover too weak. 1782 trivial. 0 not checked. [2019-05-23 11:20:53,772 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:53,773 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 16] total 44 [2019-05-23 11:20:53,773 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:20:53,773 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:20:53,774 INFO L146 ILogger]: CoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:20:53,774 INFO L146 ILogger]: Start difference. First operand 267 states and 271 transitions. Second operand 44 states. [2019-05-23 11:20:55,916 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:55,916 INFO L146 ILogger]: Finished difference Result 476 states and 484 transitions. [2019-05-23 11:20:55,916 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:20:55,916 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 247 [2019-05-23 11:20:55,917 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:55,918 INFO L146 ILogger]: With dead ends: 476 [2019-05-23 11:20:55,918 INFO L146 ILogger]: Without dead ends: 297 [2019-05-23 11:20:55,920 INFO L146 ILogger]: 0 DeclaredPredicates, 310 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1425, Invalid=4581, Unknown=0, NotChecked=0, Total=6006 [2019-05-23 11:20:55,921 INFO L146 ILogger]: Start minimizeSevpa. Operand 297 states. [2019-05-23 11:20:55,926 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 297 to 272. [2019-05-23 11:20:55,926 INFO L146 ILogger]: Start removeUnreachable. Operand 272 states. [2019-05-23 11:20:55,926 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 272 states to 272 states and 275 transitions. [2019-05-23 11:20:55,926 INFO L146 ILogger]: Start accepts. Automaton has 272 states and 275 transitions. Word has length 247 [2019-05-23 11:20:55,927 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:55,927 INFO L146 ILogger]: Abstraction has 272 states and 275 transitions. [2019-05-23 11:20:55,927 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:20:55,927 INFO L146 ILogger]: Start isEmpty. Operand 272 states and 275 transitions. [2019-05-23 11:20:55,928 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 264 [2019-05-23 11:20:55,928 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:55,928 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:55,928 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:55,929 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:55,929 INFO L146 ILogger]: Analyzing trace with hash 1926839238, now seen corresponding path program 16 times [2019-05-23 11:20:55,929 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:55,929 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:55,929 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,930 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:55,930 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,948 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:56,799 INFO L146 ILogger]: Checked inductivity of 2091 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2019-05-23 11:20:56,799 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:56,799 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:56,809 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:56,857 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:56,857 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:56,859 INFO L146 ILogger]: Trace formula consists of 268 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:20:56,862 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:57,010 INFO L146 ILogger]: treesize reduction 35, result has 20.5 percent of original size [2019-05-23 11:20:57,011 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 19 treesize of output 19 [2019-05-23 11:20:57,011 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:57,016 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:57,017 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:57,017 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:20:57,315 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:57,316 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:20:57,316 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:57,320 INFO L146 ILogger]: treesize reduction 17, result has 15.0 percent of original size [2019-05-23 11:20:57,321 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:57,321 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:20:57,492 INFO L146 ILogger]: Checked inductivity of 2091 backedges. 0 proven. 566 refuted. 0 times theorem prover too weak. 1525 trivial. 0 not checked. [2019-05-23 11:20:57,510 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:57,511 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 21] total 50 [2019-05-23 11:20:57,511 INFO L146 ILogger]: Interpolant automaton has 50 states [2019-05-23 11:20:57,511 INFO L146 ILogger]: Constructing interpolant automaton starting with 50 interpolants. [2019-05-23 11:20:57,512 INFO L146 ILogger]: CoverageRelationStatistics Valid=606, Invalid=1844, Unknown=0, NotChecked=0, Total=2450 [2019-05-23 11:20:57,512 INFO L146 ILogger]: Start difference. First operand 272 states and 275 transitions. Second operand 50 states. [2019-05-23 11:20:59,336 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:59,336 INFO L146 ILogger]: Finished difference Result 528 states and 536 transitions. [2019-05-23 11:20:59,336 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-05-23 11:20:59,337 INFO L146 ILogger]: Start accepts. Automaton has 50 states. Word has length 263 [2019-05-23 11:20:59,337 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:59,339 INFO L146 ILogger]: With dead ends: 528 [2019-05-23 11:20:59,339 INFO L146 ILogger]: Without dead ends: 405 [2019-05-23 11:20:59,340 INFO L146 ILogger]: 0 DeclaredPredicates, 330 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1526, Invalid=5956, Unknown=0, NotChecked=0, Total=7482 [2019-05-23 11:20:59,340 INFO L146 ILogger]: Start minimizeSevpa. Operand 405 states. [2019-05-23 11:20:59,349 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 405 to 299. [2019-05-23 11:20:59,350 INFO L146 ILogger]: Start removeUnreachable. Operand 299 states. [2019-05-23 11:20:59,350 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 299 states to 299 states and 303 transitions. [2019-05-23 11:20:59,350 INFO L146 ILogger]: Start accepts. Automaton has 299 states and 303 transitions. Word has length 263 [2019-05-23 11:20:59,351 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:59,351 INFO L146 ILogger]: Abstraction has 299 states and 303 transitions. [2019-05-23 11:20:59,351 INFO L146 ILogger]: Interpolant automaton has 50 states. [2019-05-23 11:20:59,351 INFO L146 ILogger]: Start isEmpty. Operand 299 states and 303 transitions. [2019-05-23 11:20:59,352 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 278 [2019-05-23 11:20:59,352 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:59,353 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:59,353 INFO L146 ILogger]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:59,353 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:59,353 INFO L146 ILogger]: Analyzing trace with hash -298594424, now seen corresponding path program 3 times [2019-05-23 11:20:59,353 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:59,354 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:59,354 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:59,354 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:59,354 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:59,373 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:59,710 INFO L146 ILogger]: Checked inductivity of 2271 backedges. 5 proven. 120 refuted. 0 times theorem prover too weak. 2146 trivial. 0 not checked. [2019-05-23 11:20:59,710 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:59,710 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:59,719 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:59,780 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:20:59,780 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:59,781 INFO L146 ILogger]: Trace formula consists of 228 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:59,784 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:59,877 INFO L146 ILogger]: Checked inductivity of 2271 backedges. 5 proven. 120 refuted. 0 times theorem prover too weak. 2146 trivial. 0 not checked. [2019-05-23 11:20:59,896 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:59,896 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:20:59,897 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:20:59,897 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:20:59,897 INFO L146 ILogger]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:59,897 INFO L146 ILogger]: Start difference. First operand 299 states and 303 transitions. Second operand 10 states. [2019-05-23 11:21:00,072 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:00,073 INFO L146 ILogger]: Finished difference Result 498 states and 506 transitions. [2019-05-23 11:21:00,073 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:21:00,073 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 277 [2019-05-23 11:21:00,074 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:00,076 INFO L146 ILogger]: With dead ends: 498 [2019-05-23 11:21:00,077 INFO L146 ILogger]: Without dead ends: 421 [2019-05-23 11:21:00,077 INFO L146 ILogger]: 0 DeclaredPredicates, 291 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:21:00,078 INFO L146 ILogger]: Start minimizeSevpa. Operand 421 states. [2019-05-23 11:21:00,085 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 421 to 307. [2019-05-23 11:21:00,085 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:21:00,086 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 311 transitions. [2019-05-23 11:21:00,086 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 311 transitions. Word has length 277 [2019-05-23 11:21:00,086 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:00,086 INFO L146 ILogger]: Abstraction has 307 states and 311 transitions. [2019-05-23 11:21:00,086 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:21:00,087 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 311 transitions. [2019-05-23 11:21:00,088 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 280 [2019-05-23 11:21:00,088 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:00,088 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:00,089 INFO L146 ILogger]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:00,089 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:00,089 INFO L146 ILogger]: Analyzing trace with hash 1404833093, now seen corresponding path program 17 times [2019-05-23 11:21:00,089 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:00,089 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:00,090 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:00,090 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:00,090 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:00,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:00,636 INFO L146 ILogger]: Checked inductivity of 2281 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:21:00,636 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:00,636 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:00,646 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:10,623 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-05-23 11:21:10,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:10,632 INFO L146 ILogger]: Trace formula consists of 399 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:21:10,635 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:10,739 INFO L146 ILogger]: Checked inductivity of 2281 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:21:10,761 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:10,761 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:21:10,762 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:21:10,762 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:21:10,762 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:10,762 INFO L146 ILogger]: Start difference. First operand 307 states and 311 transitions. Second operand 33 states. [2019-05-23 11:21:10,951 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:10,951 INFO L146 ILogger]: Finished difference Result 469 states and 477 transitions. [2019-05-23 11:21:10,951 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:21:10,951 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 279 [2019-05-23 11:21:10,952 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:10,953 INFO L146 ILogger]: With dead ends: 469 [2019-05-23 11:21:10,953 INFO L146 ILogger]: Without dead ends: 316 [2019-05-23 11:21:10,953 INFO L146 ILogger]: 0 DeclaredPredicates, 310 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:10,954 INFO L146 ILogger]: Start minimizeSevpa. Operand 316 states. [2019-05-23 11:21:10,960 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 316 to 312. [2019-05-23 11:21:10,960 INFO L146 ILogger]: Start removeUnreachable. Operand 312 states. [2019-05-23 11:21:10,961 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 312 states to 312 states and 316 transitions. [2019-05-23 11:21:10,961 INFO L146 ILogger]: Start accepts. Automaton has 312 states and 316 transitions. Word has length 279 [2019-05-23 11:21:10,961 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:10,961 INFO L146 ILogger]: Abstraction has 312 states and 316 transitions. [2019-05-23 11:21:10,962 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:21:10,962 INFO L146 ILogger]: Start isEmpty. Operand 312 states and 316 transitions. [2019-05-23 11:21:10,963 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 285 [2019-05-23 11:21:10,963 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:10,963 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:10,964 INFO L146 ILogger]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:10,964 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:10,964 INFO L146 ILogger]: Analyzing trace with hash 265039292, now seen corresponding path program 18 times [2019-05-23 11:21:10,964 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:10,964 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:10,965 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:10,965 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:10,965 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:10,984 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:12,058 INFO L146 ILogger]: Checked inductivity of 2427 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:21:12,058 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:12,058 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:12,068 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE