java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-industry-pattern/array_of_struct_single_elem_init_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:21:55,369 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:21:55,371 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:21:55,383 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:21:55,383 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:21:55,384 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:21:55,385 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:21:55,387 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:21:55,389 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:21:55,390 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:21:55,391 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:21:55,391 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:21:55,392 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:21:55,393 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:21:55,394 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:21:55,395 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:21:55,396 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:21:55,398 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:21:55,400 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:21:55,401 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:21:55,403 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:21:55,407 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:21:55,413 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:21:55,413 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:21:55,413 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:21:55,414 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:21:55,415 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:21:55,416 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:21:55,416 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:21:55,417 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:21:55,421 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:21:55,422 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:21:55,423 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:21:55,425 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:21:55,426 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:21:55,426 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:21:55,426 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:21:55,427 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:21:55,430 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:21:55,430 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:21:55,456 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:21:55,456 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:21:55,457 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:21:55,457 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:21:55,458 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:21:55,458 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:21:55,458 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:21:55,458 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:21:55,458 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:21:55,459 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:21:55,459 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:21:55,459 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:21:55,459 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:21:55,459 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:21:55,460 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:21:55,460 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:21:55,460 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:21:55,460 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:21:55,460 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:21:55,461 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:21:55,462 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:21:55,462 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:21:55,462 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:21:55,462 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:21:55,463 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:21:55,463 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:21:55,463 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:21:55,463 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:21:55,463 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:21:55,509 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:21:55,527 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:21:55,531 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:21:55,534 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:21:55,535 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:21:55,535 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-industry-pattern/array_of_struct_single_elem_init_true-unreach-call.i [2019-05-23 11:21:55,595 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7869d2c/9643bc22ffc5416fa43449adc6154add/FLAG87b5a1a74 [2019-05-23 11:21:55,975 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:21:55,976 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-industry-pattern/array_of_struct_single_elem_init_true-unreach-call.i [2019-05-23 11:21:55,981 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7869d2c/9643bc22ffc5416fa43449adc6154add/FLAG87b5a1a74 [2019-05-23 11:21:56,376 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7869d2c/9643bc22ffc5416fa43449adc6154add [2019-05-23 11:21:56,385 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:21:56,386 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:21:56,387 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:56,388 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:21:56,391 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:21:56,392 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:56" (1/1) ... [2019-05-23 11:21:56,395 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c3aa54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:56, skipping insertion in model container [2019-05-23 11:21:56,395 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:56" (1/1) ... [2019-05-23 11:21:56,402 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:21:56,419 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:21:56,640 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:58,981 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:21:59,006 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:59,038 INFO L146 ILogger]: Completed translation [2019-05-23 11:21:59,039 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59 WrapperNode [2019-05-23 11:21:59,039 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:59,040 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:59,040 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:21:59,040 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:21:59,050 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (1/1) ... [2019-05-23 11:21:59,061 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (1/1) ... [2019-05-23 11:21:59,090 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:59,090 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:21:59,091 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:21:59,091 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:21:59,102 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (1/1) ... [2019-05-23 11:21:59,102 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (1/1) ... [2019-05-23 11:21:59,104 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (1/1) ... [2019-05-23 11:21:59,105 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (1/1) ... [2019-05-23 11:21:59,112 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (1/1) ... [2019-05-23 11:21:59,124 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (1/1) ... [2019-05-23 11:21:59,126 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (1/1) ... [2019-05-23 11:21:59,128 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:21:59,132 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:21:59,132 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:21:59,132 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:21:59,133 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:21:59,203 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:21:59,203 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:21:59,203 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:21:59,204 INFO L146 ILogger]: Found specification of procedure write~init~int [2019-05-23 11:21:59,204 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:21:59,204 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:21:59,204 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:21:59,763 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:21:59,764 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:21:59,765 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:59 BoogieIcfgContainer [2019-05-23 11:21:59,765 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:21:59,766 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:21:59,766 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:21:59,770 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:21:59,770 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:21:56" (1/3) ... [2019-05-23 11:21:59,771 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3080f094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:59, skipping insertion in model container [2019-05-23 11:21:59,771 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:59" (2/3) ... [2019-05-23 11:21:59,772 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3080f094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:59, skipping insertion in model container [2019-05-23 11:21:59,772 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:59" (3/3) ... [2019-05-23 11:21:59,774 INFO L146 ILogger]: Analyzing ICFG array_of_struct_single_elem_init_true-unreach-call.i [2019-05-23 11:21:59,783 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:21:59,792 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:21:59,808 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:21:59,839 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:21:59,839 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:21:59,840 INFO L146 ILogger]: Hoare is true [2019-05-23 11:21:59,840 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:21:59,840 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:21:59,840 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:21:59,840 INFO L146 ILogger]: Difference is false [2019-05-23 11:21:59,840 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:21:59,841 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:21:59,856 INFO L146 ILogger]: Start isEmpty. Operand 67 states. [2019-05-23 11:21:59,863 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:21:59,863 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:59,864 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:59,866 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:59,871 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:59,871 INFO L146 ILogger]: Analyzing trace with hash -1188421922, now seen corresponding path program 1 times [2019-05-23 11:21:59,872 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:59,873 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:59,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:59,917 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:59,917 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:59,955 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:59,993 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:59,996 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:59,996 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:22:00,000 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:22:00,011 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:22:00,012 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:22:00,014 INFO L146 ILogger]: Start difference. First operand 67 states. Second operand 2 states. [2019-05-23 11:22:00,034 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:00,035 INFO L146 ILogger]: Finished difference Result 104 states and 115 transitions. [2019-05-23 11:22:00,035 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:22:00,036 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 31 [2019-05-23 11:22:00,037 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:00,050 INFO L146 ILogger]: With dead ends: 104 [2019-05-23 11:22:00,051 INFO L146 ILogger]: Without dead ends: 63 [2019-05-23 11:22:00,054 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 11:22:00,074 INFO L146 ILogger]: Start minimizeSevpa. Operand 63 states. [2019-05-23 11:22:00,096 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-05-23 11:22:00,097 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:22:00,100 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2019-05-23 11:22:00,103 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 31 [2019-05-23 11:22:00,103 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:00,103 INFO L146 ILogger]: Abstraction has 63 states and 67 transitions. [2019-05-23 11:22:00,103 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:22:00,104 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 67 transitions. [2019-05-23 11:22:00,106 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:22:00,107 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:00,107 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:00,107 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:00,108 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:00,109 INFO L146 ILogger]: Analyzing trace with hash -1121415169, now seen corresponding path program 1 times [2019-05-23 11:22:00,109 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:00,109 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:00,111 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:00,115 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:00,115 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:00,139 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:00,189 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 11:22:00,189 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:22:00,189 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:22:00,191 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:22:00,191 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:22:00,192 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:22:00,192 INFO L146 ILogger]: Start difference. First operand 63 states and 67 transitions. Second operand 3 states. [2019-05-23 11:22:00,348 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:00,349 INFO L146 ILogger]: Finished difference Result 142 states and 152 transitions. [2019-05-23 11:22:00,349 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:22:00,349 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 31 [2019-05-23 11:22:00,350 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:00,351 INFO L146 ILogger]: With dead ends: 142 [2019-05-23 11:22:00,351 INFO L146 ILogger]: Without dead ends: 109 [2019-05-23 11:22:00,353 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 11:22:00,353 INFO L146 ILogger]: Start minimizeSevpa. Operand 109 states. [2019-05-23 11:22:00,361 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 109 to 64. [2019-05-23 11:22:00,361 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:22:00,362 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2019-05-23 11:22:00,363 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 31 [2019-05-23 11:22:00,363 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:00,363 INFO L146 ILogger]: Abstraction has 64 states and 68 transitions. [2019-05-23 11:22:00,363 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:22:00,364 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 68 transitions. [2019-05-23 11:22:00,365 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 52 [2019-05-23 11:22:00,365 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:00,365 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:00,366 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:00,366 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:00,366 INFO L146 ILogger]: Analyzing trace with hash 2122628111, now seen corresponding path program 1 times [2019-05-23 11:22:00,367 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:00,367 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:00,368 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:00,368 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:00,369 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:00,389 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:00,677 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 11:22:00,678 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:00,678 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 11:22:00,700 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:00,760 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:00,762 INFO L146 ILogger]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:22:00,769 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:00,808 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 11:22:00,833 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:00,833 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:22:00,834 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:22:00,834 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:22:00,835 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:22:00,835 INFO L146 ILogger]: Start difference. First operand 64 states and 68 transitions. Second operand 6 states. [2019-05-23 11:22:01,567 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:01,567 INFO L146 ILogger]: Finished difference Result 166 states and 179 transitions. [2019-05-23 11:22:01,568 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:22:01,568 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 51 [2019-05-23 11:22:01,569 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:01,571 INFO L146 ILogger]: With dead ends: 166 [2019-05-23 11:22:01,571 INFO L146 ILogger]: Without dead ends: 133 [2019-05-23 11:22:01,572 INFO L146 ILogger]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:22:01,573 INFO L146 ILogger]: Start minimizeSevpa. Operand 133 states. [2019-05-23 11:22:01,580 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 133 to 87. [2019-05-23 11:22:01,580 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:22:01,582 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2019-05-23 11:22:01,582 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 51 [2019-05-23 11:22:01,582 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:01,582 INFO L146 ILogger]: Abstraction has 87 states and 92 transitions. [2019-05-23 11:22:01,582 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:22:01,583 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 92 transitions. [2019-05-23 11:22:01,585 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 74 [2019-05-23 11:22:01,585 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:01,585 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:01,585 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:01,586 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:01,586 INFO L146 ILogger]: Analyzing trace with hash -378946654, now seen corresponding path program 1 times [2019-05-23 11:22:01,586 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:01,586 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:01,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:01,587 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:01,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:01,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:01,746 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:01,746 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:01,747 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 11:22:01,765 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:01,804 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:01,805 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:22:01,809 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:01,905 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:01,933 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:01,933 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-05-23 11:22:01,934 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:22:01,934 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:22:01,935 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:22:01,935 INFO L146 ILogger]: Start difference. First operand 87 states and 92 transitions. Second operand 9 states. [2019-05-23 11:22:02,698 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:02,699 INFO L146 ILogger]: Finished difference Result 189 states and 201 transitions. [2019-05-23 11:22:02,699 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:22:02,699 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 73 [2019-05-23 11:22:02,700 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:02,701 INFO L146 ILogger]: With dead ends: 189 [2019-05-23 11:22:02,701 INFO L146 ILogger]: Without dead ends: 155 [2019-05-23 11:22:02,702 INFO L146 ILogger]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:22:02,703 INFO L146 ILogger]: Start minimizeSevpa. Operand 155 states. [2019-05-23 11:22:02,711 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 155 to 109. [2019-05-23 11:22:02,711 INFO L146 ILogger]: Start removeUnreachable. Operand 109 states. [2019-05-23 11:22:02,712 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 109 states to 109 states and 115 transitions. [2019-05-23 11:22:02,712 INFO L146 ILogger]: Start accepts. Automaton has 109 states and 115 transitions. Word has length 73 [2019-05-23 11:22:02,713 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:02,713 INFO L146 ILogger]: Abstraction has 109 states and 115 transitions. [2019-05-23 11:22:02,713 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:22:02,713 INFO L146 ILogger]: Start isEmpty. Operand 109 states and 115 transitions. [2019-05-23 11:22:02,714 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:22:02,715 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:02,715 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:02,715 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:02,715 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:02,716 INFO L146 ILogger]: Analyzing trace with hash -890907726, now seen corresponding path program 2 times [2019-05-23 11:22:02,716 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:02,716 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:02,717 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:02,717 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:02,717 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:02,747 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:02,978 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:02,979 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:02,979 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 11:22:03,084 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:03,131 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:03,131 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:03,133 INFO L146 ILogger]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:22:03,138 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:03,203 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:03,222 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:03,222 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:22:03,222 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:22:03,223 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:22:03,224 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:22:03,224 INFO L146 ILogger]: Start difference. First operand 109 states and 115 transitions. Second operand 11 states. [2019-05-23 11:22:03,578 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:03,582 INFO L146 ILogger]: Finished difference Result 211 states and 224 transitions. [2019-05-23 11:22:03,582 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:22:03,582 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 93 [2019-05-23 11:22:03,583 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:03,584 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:22:03,584 INFO L146 ILogger]: Without dead ends: 177 [2019-05-23 11:22:03,590 INFO L146 ILogger]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:22:03,590 INFO L146 ILogger]: Start minimizeSevpa. Operand 177 states. [2019-05-23 11:22:03,605 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 177 to 131. [2019-05-23 11:22:03,606 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:22:03,609 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 138 transitions. [2019-05-23 11:22:03,610 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 138 transitions. Word has length 93 [2019-05-23 11:22:03,610 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:03,610 INFO L146 ILogger]: Abstraction has 131 states and 138 transitions. [2019-05-23 11:22:03,610 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:22:03,611 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 138 transitions. [2019-05-23 11:22:03,614 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:22:03,615 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:03,615 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:03,615 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:03,615 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:03,616 INFO L146 ILogger]: Analyzing trace with hash 922043330, now seen corresponding path program 3 times [2019-05-23 11:22:03,619 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:03,619 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:03,620 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:03,620 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:03,620 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:03,648 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:03,844 INFO L146 ILogger]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:03,844 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:03,844 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 11:22:03,864 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:03,963 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:22:03,964 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:03,966 INFO L146 ILogger]: Trace formula consists of 203 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:22:03,971 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:04,074 INFO L146 ILogger]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:04,104 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:04,105 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:22:04,105 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:22:04,106 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:22:04,106 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:22:04,106 INFO L146 ILogger]: Start difference. First operand 131 states and 138 transitions. Second operand 13 states. [2019-05-23 11:22:04,675 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:04,675 INFO L146 ILogger]: Finished difference Result 233 states and 247 transitions. [2019-05-23 11:22:04,675 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:22:04,676 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 113 [2019-05-23 11:22:04,676 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:04,681 INFO L146 ILogger]: With dead ends: 233 [2019-05-23 11:22:04,681 INFO L146 ILogger]: Without dead ends: 199 [2019-05-23 11:22:04,683 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:22:04,684 INFO L146 ILogger]: Start minimizeSevpa. Operand 199 states. [2019-05-23 11:22:04,690 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 199 to 153. [2019-05-23 11:22:04,690 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:22:04,691 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 161 transitions. [2019-05-23 11:22:04,691 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 161 transitions. Word has length 113 [2019-05-23 11:22:04,692 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:04,692 INFO L146 ILogger]: Abstraction has 153 states and 161 transitions. [2019-05-23 11:22:04,692 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:22:04,692 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 161 transitions. [2019-05-23 11:22:04,694 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:22:04,694 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:04,694 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:04,695 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:04,695 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:04,695 INFO L146 ILogger]: Analyzing trace with hash -1166275630, now seen corresponding path program 4 times [2019-05-23 11:22:04,695 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:04,695 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:04,696 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:04,696 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:04,696 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:04,725 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:05,325 INFO L146 ILogger]: Checked inductivity of 205 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:05,326 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:05,326 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 11:22:05,336 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:05,477 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:05,478 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:05,479 INFO L146 ILogger]: Trace formula consists of 238 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:22:05,486 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:05,609 INFO L146 ILogger]: Checked inductivity of 205 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:05,628 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:05,629 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:22:05,629 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:22:05,629 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:22:05,630 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:22:05,630 INFO L146 ILogger]: Start difference. First operand 153 states and 161 transitions. Second operand 15 states. [2019-05-23 11:22:05,928 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:05,929 INFO L146 ILogger]: Finished difference Result 255 states and 270 transitions. [2019-05-23 11:22:05,929 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:22:05,929 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 133 [2019-05-23 11:22:05,930 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:05,932 INFO L146 ILogger]: With dead ends: 255 [2019-05-23 11:22:05,932 INFO L146 ILogger]: Without dead ends: 221 [2019-05-23 11:22:05,933 INFO L146 ILogger]: 0 DeclaredPredicates, 155 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:22:05,933 INFO L146 ILogger]: Start minimizeSevpa. Operand 221 states. [2019-05-23 11:22:05,941 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 221 to 175. [2019-05-23 11:22:05,941 INFO L146 ILogger]: Start removeUnreachable. Operand 175 states. [2019-05-23 11:22:05,942 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 175 states to 175 states and 184 transitions. [2019-05-23 11:22:05,942 INFO L146 ILogger]: Start accepts. Automaton has 175 states and 184 transitions. Word has length 133 [2019-05-23 11:22:05,943 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:05,943 INFO L146 ILogger]: Abstraction has 175 states and 184 transitions. [2019-05-23 11:22:05,943 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:22:05,943 INFO L146 ILogger]: Start isEmpty. Operand 175 states and 184 transitions. [2019-05-23 11:22:05,945 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 154 [2019-05-23 11:22:05,945 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:05,945 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:05,945 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:05,946 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:05,946 INFO L146 ILogger]: Analyzing trace with hash -2007094302, now seen corresponding path program 5 times [2019-05-23 11:22:05,946 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:05,946 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:05,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:05,947 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:05,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:05,973 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:06,180 INFO L146 ILogger]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:06,180 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:06,181 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 11:22:06,200 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:06,522 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:22:06,522 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:06,524 INFO L146 ILogger]: Trace formula consists of 273 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:22:06,528 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:06,600 INFO L146 ILogger]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:06,618 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:06,619 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:22:06,619 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:22:06,619 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:22:06,620 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:22:06,620 INFO L146 ILogger]: Start difference. First operand 175 states and 184 transitions. Second operand 17 states. [2019-05-23 11:22:06,922 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:06,923 INFO L146 ILogger]: Finished difference Result 277 states and 293 transitions. [2019-05-23 11:22:06,923 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:22:06,923 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 153 [2019-05-23 11:22:06,924 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:06,926 INFO L146 ILogger]: With dead ends: 277 [2019-05-23 11:22:06,926 INFO L146 ILogger]: Without dead ends: 243 [2019-05-23 11:22:06,927 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:22:06,928 INFO L146 ILogger]: Start minimizeSevpa. Operand 243 states. [2019-05-23 11:22:06,933 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 243 to 197. [2019-05-23 11:22:06,933 INFO L146 ILogger]: Start removeUnreachable. Operand 197 states. [2019-05-23 11:22:06,934 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 197 states to 197 states and 207 transitions. [2019-05-23 11:22:06,934 INFO L146 ILogger]: Start accepts. Automaton has 197 states and 207 transitions. Word has length 153 [2019-05-23 11:22:06,934 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:06,935 INFO L146 ILogger]: Abstraction has 197 states and 207 transitions. [2019-05-23 11:22:06,935 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:22:06,935 INFO L146 ILogger]: Start isEmpty. Operand 197 states and 207 transitions. [2019-05-23 11:22:06,937 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 174 [2019-05-23 11:22:06,937 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:06,937 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:06,938 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:06,938 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:06,938 INFO L146 ILogger]: Analyzing trace with hash 2038408178, now seen corresponding path program 6 times [2019-05-23 11:22:06,938 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:06,938 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:06,939 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:06,939 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:06,940 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:06,964 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:07,293 INFO L146 ILogger]: Checked inductivity of 427 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:07,293 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:07,293 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 11:22:07,302 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:22:07,647 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-05-23 11:22:07,647 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:07,649 INFO L146 ILogger]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:22:07,652 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:07,715 INFO L146 ILogger]: Checked inductivity of 427 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:07,733 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:07,734 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:22:07,734 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:22:07,734 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:22:07,735 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:22:07,735 INFO L146 ILogger]: Start difference. First operand 197 states and 207 transitions. Second operand 19 states. [2019-05-23 11:22:08,267 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:08,268 INFO L146 ILogger]: Finished difference Result 299 states and 316 transitions. [2019-05-23 11:22:08,271 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:22:08,271 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 173 [2019-05-23 11:22:08,272 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:08,274 INFO L146 ILogger]: With dead ends: 299 [2019-05-23 11:22:08,274 INFO L146 ILogger]: Without dead ends: 265 [2019-05-23 11:22:08,275 INFO L146 ILogger]: 0 DeclaredPredicates, 203 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:22:08,275 INFO L146 ILogger]: Start minimizeSevpa. Operand 265 states. [2019-05-23 11:22:08,279 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 265 to 219. [2019-05-23 11:22:08,279 INFO L146 ILogger]: Start removeUnreachable. Operand 219 states. [2019-05-23 11:22:08,280 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 219 states to 219 states and 230 transitions. [2019-05-23 11:22:08,280 INFO L146 ILogger]: Start accepts. Automaton has 219 states and 230 transitions. Word has length 173 [2019-05-23 11:22:08,281 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:08,281 INFO L146 ILogger]: Abstraction has 219 states and 230 transitions. [2019-05-23 11:22:08,281 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:22:08,281 INFO L146 ILogger]: Start isEmpty. Operand 219 states and 230 transitions. [2019-05-23 11:22:08,283 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 194 [2019-05-23 11:22:08,283 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:08,284 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:08,284 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:08,284 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:08,284 INFO L146 ILogger]: Analyzing trace with hash 214201346, now seen corresponding path program 7 times [2019-05-23 11:22:08,284 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:08,284 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:08,285 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:08,285 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:08,286 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:08,308 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:09,140 INFO L146 ILogger]: Checked inductivity of 568 backedges. 0 proven. 568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:09,140 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:09,140 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 11:22:09,151 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:09,209 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:09,210 INFO L146 ILogger]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:22:09,214 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:09,357 INFO L146 ILogger]: Checked inductivity of 568 backedges. 0 proven. 568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:09,375 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:09,375 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:22:09,376 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:22:09,377 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:22:09,377 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:22:09,377 INFO L146 ILogger]: Start difference. First operand 219 states and 230 transitions. Second operand 21 states. [2019-05-23 11:22:09,861 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:09,861 INFO L146 ILogger]: Finished difference Result 321 states and 339 transitions. [2019-05-23 11:22:09,862 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:22:09,862 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 193 [2019-05-23 11:22:09,863 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:09,865 INFO L146 ILogger]: With dead ends: 321 [2019-05-23 11:22:09,865 INFO L146 ILogger]: Without dead ends: 287 [2019-05-23 11:22:09,866 INFO L146 ILogger]: 0 DeclaredPredicates, 227 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:22:09,866 INFO L146 ILogger]: Start minimizeSevpa. Operand 287 states. [2019-05-23 11:22:09,870 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 287 to 241. [2019-05-23 11:22:09,871 INFO L146 ILogger]: Start removeUnreachable. Operand 241 states. [2019-05-23 11:22:09,872 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 241 states to 241 states and 253 transitions. [2019-05-23 11:22:09,872 INFO L146 ILogger]: Start accepts. Automaton has 241 states and 253 transitions. Word has length 193 [2019-05-23 11:22:09,872 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:09,872 INFO L146 ILogger]: Abstraction has 241 states and 253 transitions. [2019-05-23 11:22:09,872 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:22:09,873 INFO L146 ILogger]: Start isEmpty. Operand 241 states and 253 transitions. [2019-05-23 11:22:09,874 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 214 [2019-05-23 11:22:09,875 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:09,875 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:09,875 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:09,876 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:09,876 INFO L146 ILogger]: Analyzing trace with hash 1729141778, now seen corresponding path program 8 times [2019-05-23 11:22:09,876 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:09,876 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:09,877 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:09,877 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:09,877 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:09,901 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:10,215 INFO L146 ILogger]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:10,215 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:10,216 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 11:22:10,227 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:10,300 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:10,300 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:10,302 INFO L146 ILogger]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:22:10,305 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:10,392 INFO L146 ILogger]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:10,419 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:10,419 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:22:10,420 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:22:10,420 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:22:10,420 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:22:10,422 INFO L146 ILogger]: Start difference. First operand 241 states and 253 transitions. Second operand 23 states. [2019-05-23 11:22:11,333 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:11,333 INFO L146 ILogger]: Finished difference Result 343 states and 362 transitions. [2019-05-23 11:22:11,334 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:22:11,334 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 213 [2019-05-23 11:22:11,335 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:11,336 INFO L146 ILogger]: With dead ends: 343 [2019-05-23 11:22:11,336 INFO L146 ILogger]: Without dead ends: 309 [2019-05-23 11:22:11,338 INFO L146 ILogger]: 0 DeclaredPredicates, 251 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:22:11,338 INFO L146 ILogger]: Start minimizeSevpa. Operand 309 states. [2019-05-23 11:22:11,342 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 309 to 263. [2019-05-23 11:22:11,342 INFO L146 ILogger]: Start removeUnreachable. Operand 263 states. [2019-05-23 11:22:11,343 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 263 states to 263 states and 276 transitions. [2019-05-23 11:22:11,343 INFO L146 ILogger]: Start accepts. Automaton has 263 states and 276 transitions. Word has length 213 [2019-05-23 11:22:11,344 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:11,344 INFO L146 ILogger]: Abstraction has 263 states and 276 transitions. [2019-05-23 11:22:11,344 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:22:11,344 INFO L146 ILogger]: Start isEmpty. Operand 263 states and 276 transitions. [2019-05-23 11:22:11,346 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 234 [2019-05-23 11:22:11,346 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:11,347 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:11,347 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:11,347 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:11,347 INFO L146 ILogger]: Analyzing trace with hash 1397234722, now seen corresponding path program 9 times [2019-05-23 11:22:11,348 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:11,348 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:11,348 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:11,349 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:11,349 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:11,372 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:11,684 INFO L146 ILogger]: Checked inductivity of 910 backedges. 0 proven. 910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:11,684 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:11,684 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 11:22:11,695 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:12,361 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-05-23 11:22:12,361 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:12,365 INFO L146 ILogger]: Trace formula consists of 413 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:22:12,369 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:12,450 INFO L146 ILogger]: Checked inductivity of 910 backedges. 0 proven. 910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:12,470 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:12,470 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:22:12,470 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:22:12,471 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:22:12,471 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:22:12,471 INFO L146 ILogger]: Start difference. First operand 263 states and 276 transitions. Second operand 25 states. [2019-05-23 11:22:13,158 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:13,159 INFO L146 ILogger]: Finished difference Result 365 states and 385 transitions. [2019-05-23 11:22:13,159 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:22:13,159 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 233 [2019-05-23 11:22:13,159 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:13,161 INFO L146 ILogger]: With dead ends: 365 [2019-05-23 11:22:13,161 INFO L146 ILogger]: Without dead ends: 331 [2019-05-23 11:22:13,162 INFO L146 ILogger]: 0 DeclaredPredicates, 275 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:22:13,163 INFO L146 ILogger]: Start minimizeSevpa. Operand 331 states. [2019-05-23 11:22:13,168 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 331 to 285. [2019-05-23 11:22:13,168 INFO L146 ILogger]: Start removeUnreachable. Operand 285 states. [2019-05-23 11:22:13,169 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 285 states to 285 states and 299 transitions. [2019-05-23 11:22:13,169 INFO L146 ILogger]: Start accepts. Automaton has 285 states and 299 transitions. Word has length 233 [2019-05-23 11:22:13,169 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:13,169 INFO L146 ILogger]: Abstraction has 285 states and 299 transitions. [2019-05-23 11:22:13,170 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:22:13,170 INFO L146 ILogger]: Start isEmpty. Operand 285 states and 299 transitions. [2019-05-23 11:22:13,171 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 254 [2019-05-23 11:22:13,171 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:13,171 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:13,172 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:13,172 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:13,172 INFO L146 ILogger]: Analyzing trace with hash 1112470578, now seen corresponding path program 10 times [2019-05-23 11:22:13,172 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:13,172 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:13,173 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:13,173 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:13,173 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:13,200 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:14,190 INFO L146 ILogger]: Checked inductivity of 1111 backedges. 0 proven. 1111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:14,190 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:14,190 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 11:22:14,199 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:19,625 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:19,625 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:19,630 INFO L146 ILogger]: Trace formula consists of 448 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:22:19,632 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:19,737 INFO L146 ILogger]: Checked inductivity of 1111 backedges. 0 proven. 1111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:19,757 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:19,757 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:22:19,758 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:22:19,758 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:22:19,758 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:22:19,758 INFO L146 ILogger]: Start difference. First operand 285 states and 299 transitions. Second operand 27 states. [2019-05-23 11:22:20,446 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:20,447 INFO L146 ILogger]: Finished difference Result 387 states and 408 transitions. [2019-05-23 11:22:20,449 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:22:20,449 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 253 [2019-05-23 11:22:20,449 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:20,450 INFO L146 ILogger]: With dead ends: 387 [2019-05-23 11:22:20,451 INFO L146 ILogger]: Without dead ends: 353 [2019-05-23 11:22:20,452 INFO L146 ILogger]: 0 DeclaredPredicates, 299 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:22:20,452 INFO L146 ILogger]: Start minimizeSevpa. Operand 353 states. [2019-05-23 11:22:20,457 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 353 to 307. [2019-05-23 11:22:20,457 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:22:20,458 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 322 transitions. [2019-05-23 11:22:20,458 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 322 transitions. Word has length 253 [2019-05-23 11:22:20,459 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:20,459 INFO L146 ILogger]: Abstraction has 307 states and 322 transitions. [2019-05-23 11:22:20,459 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:22:20,459 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 322 transitions. [2019-05-23 11:22:20,461 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 274 [2019-05-23 11:22:20,461 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:20,461 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:20,461 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:20,462 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:20,462 INFO L146 ILogger]: Analyzing trace with hash 1258890306, now seen corresponding path program 11 times [2019-05-23 11:22:20,462 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:20,462 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:20,463 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:20,463 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:20,463 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:20,491 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:20,994 INFO L146 ILogger]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:20,995 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:20,995 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 11:22:21,004 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:35,157 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:22:35,158 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:35,169 INFO L146 ILogger]: Trace formula consists of 483 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:22:35,173 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:35,357 INFO L146 ILogger]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:35,383 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:35,383 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:22:35,384 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:22:35,384 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:22:35,385 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:22:35,385 INFO L146 ILogger]: Start difference. First operand 307 states and 322 transitions. Second operand 29 states. [2019-05-23 11:22:37,556 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:37,557 INFO L146 ILogger]: Finished difference Result 409 states and 431 transitions. [2019-05-23 11:22:37,558 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:22:37,558 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 273 [2019-05-23 11:22:37,559 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:37,561 INFO L146 ILogger]: With dead ends: 409 [2019-05-23 11:22:37,562 INFO L146 ILogger]: Without dead ends: 375 [2019-05-23 11:22:37,563 INFO L146 ILogger]: 0 DeclaredPredicates, 323 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:22:37,563 INFO L146 ILogger]: Start minimizeSevpa. Operand 375 states. [2019-05-23 11:22:37,567 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 375 to 329. [2019-05-23 11:22:37,568 INFO L146 ILogger]: Start removeUnreachable. Operand 329 states. [2019-05-23 11:22:37,569 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 329 states to 329 states and 345 transitions. [2019-05-23 11:22:37,569 INFO L146 ILogger]: Start accepts. Automaton has 329 states and 345 transitions. Word has length 273 [2019-05-23 11:22:37,569 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:37,570 INFO L146 ILogger]: Abstraction has 329 states and 345 transitions. [2019-05-23 11:22:37,570 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:22:37,570 INFO L146 ILogger]: Start isEmpty. Operand 329 states and 345 transitions. [2019-05-23 11:22:37,571 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 294 [2019-05-23 11:22:37,571 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:37,572 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:37,572 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:37,572 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:37,572 INFO L146 ILogger]: Analyzing trace with hash 710585426, now seen corresponding path program 12 times [2019-05-23 11:22:37,573 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:37,573 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:37,573 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:37,573 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:37,574 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:37,601 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:38,009 INFO L146 ILogger]: Checked inductivity of 1573 backedges. 0 proven. 1573 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:38,009 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:38,009 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 11:22:38,095 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:22:44,210 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2019-05-23 11:22:44,210 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:44,217 INFO L146 ILogger]: Trace formula consists of 518 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:22:44,221 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:44,336 INFO L146 ILogger]: Checked inductivity of 1573 backedges. 0 proven. 1573 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:44,359 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:44,359 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:22:44,360 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:22:44,360 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:22:44,361 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:22:44,361 INFO L146 ILogger]: Start difference. First operand 329 states and 345 transitions. Second operand 31 states. [2019-05-23 11:22:45,954 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:45,954 INFO L146 ILogger]: Finished difference Result 431 states and 454 transitions. [2019-05-23 11:22:45,954 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:22:45,955 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 293 [2019-05-23 11:22:45,955 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:45,956 INFO L146 ILogger]: With dead ends: 431 [2019-05-23 11:22:45,956 INFO L146 ILogger]: Without dead ends: 397 [2019-05-23 11:22:45,958 INFO L146 ILogger]: 0 DeclaredPredicates, 347 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:22:45,958 INFO L146 ILogger]: Start minimizeSevpa. Operand 397 states. [2019-05-23 11:22:45,963 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 397 to 351. [2019-05-23 11:22:45,964 INFO L146 ILogger]: Start removeUnreachable. Operand 351 states. [2019-05-23 11:22:45,965 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 351 states to 351 states and 368 transitions. [2019-05-23 11:22:45,965 INFO L146 ILogger]: Start accepts. Automaton has 351 states and 368 transitions. Word has length 293 [2019-05-23 11:22:45,965 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:45,965 INFO L146 ILogger]: Abstraction has 351 states and 368 transitions. [2019-05-23 11:22:45,965 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:22:45,966 INFO L146 ILogger]: Start isEmpty. Operand 351 states and 368 transitions. [2019-05-23 11:22:45,967 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 314 [2019-05-23 11:22:45,967 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:45,968 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:45,968 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:45,968 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:45,968 INFO L146 ILogger]: Analyzing trace with hash 1126665314, now seen corresponding path program 13 times [2019-05-23 11:22:45,968 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:45,969 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:45,969 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:45,969 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:45,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:46,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:46,886 INFO L146 ILogger]: Checked inductivity of 1834 backedges. 0 proven. 1834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:46,887 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:46,887 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 11:22:46,897 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:46,980 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:46,982 INFO L146 ILogger]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:22:46,988 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:47,710 INFO L146 ILogger]: Checked inductivity of 1834 backedges. 0 proven. 1834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:47,742 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:47,743 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:22:47,744 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:22:47,744 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:22:47,745 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:22:47,745 INFO L146 ILogger]: Start difference. First operand 351 states and 368 transitions. Second operand 33 states. [2019-05-23 11:22:48,889 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:48,889 INFO L146 ILogger]: Finished difference Result 453 states and 477 transitions. [2019-05-23 11:22:48,889 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:22:48,890 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 313 [2019-05-23 11:22:48,891 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:48,893 INFO L146 ILogger]: With dead ends: 453 [2019-05-23 11:22:48,893 INFO L146 ILogger]: Without dead ends: 419 [2019-05-23 11:22:48,895 INFO L146 ILogger]: 0 DeclaredPredicates, 371 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:22:48,896 INFO L146 ILogger]: Start minimizeSevpa. Operand 419 states. [2019-05-23 11:22:48,900 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 419 to 373. [2019-05-23 11:22:48,901 INFO L146 ILogger]: Start removeUnreachable. Operand 373 states. [2019-05-23 11:22:48,901 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 373 states to 373 states and 391 transitions. [2019-05-23 11:22:48,902 INFO L146 ILogger]: Start accepts. Automaton has 373 states and 391 transitions. Word has length 313 [2019-05-23 11:22:48,902 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:48,902 INFO L146 ILogger]: Abstraction has 373 states and 391 transitions. [2019-05-23 11:22:48,902 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:22:48,902 INFO L146 ILogger]: Start isEmpty. Operand 373 states and 391 transitions. [2019-05-23 11:22:48,904 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 334 [2019-05-23 11:22:48,904 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:48,905 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:48,905 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:48,905 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:48,905 INFO L146 ILogger]: Analyzing trace with hash -1638677390, now seen corresponding path program 14 times [2019-05-23 11:22:48,906 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:48,906 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:48,906 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:48,906 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:48,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:48,935 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:50,599 INFO L146 ILogger]: Checked inductivity of 2115 backedges. 0 proven. 2115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:50,599 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:50,599 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 11:22:50,608 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:50,705 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:50,705 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:50,707 INFO L146 ILogger]: Trace formula consists of 588 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:22:50,711 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:50,949 INFO L146 ILogger]: Checked inductivity of 2115 backedges. 0 proven. 2115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:50,968 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:50,968 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:22:50,969 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:22:50,969 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:22:50,970 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:22:50,970 INFO L146 ILogger]: Start difference. First operand 373 states and 391 transitions. Second operand 35 states. [2019-05-23 11:22:51,791 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:51,791 INFO L146 ILogger]: Finished difference Result 475 states and 500 transitions. [2019-05-23 11:22:51,792 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:22:51,792 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 333 [2019-05-23 11:22:51,793 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:51,794 INFO L146 ILogger]: With dead ends: 475 [2019-05-23 11:22:51,794 INFO L146 ILogger]: Without dead ends: 441 [2019-05-23 11:22:51,796 INFO L146 ILogger]: 0 DeclaredPredicates, 395 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:22:51,797 INFO L146 ILogger]: Start minimizeSevpa. Operand 441 states. [2019-05-23 11:22:51,801 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 441 to 395. [2019-05-23 11:22:51,801 INFO L146 ILogger]: Start removeUnreachable. Operand 395 states. [2019-05-23 11:22:51,802 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 395 states to 395 states and 414 transitions. [2019-05-23 11:22:51,802 INFO L146 ILogger]: Start accepts. Automaton has 395 states and 414 transitions. Word has length 333 [2019-05-23 11:22:51,803 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:51,803 INFO L146 ILogger]: Abstraction has 395 states and 414 transitions. [2019-05-23 11:22:51,803 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:22:51,803 INFO L146 ILogger]: Start isEmpty. Operand 395 states and 414 transitions. [2019-05-23 11:22:51,805 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 354 [2019-05-23 11:22:51,805 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:51,806 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:51,806 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:51,806 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:51,806 INFO L146 ILogger]: Analyzing trace with hash -356297598, now seen corresponding path program 15 times [2019-05-23 11:22:51,806 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:51,806 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:51,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:51,807 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:51,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:51,838 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:52,967 INFO L146 ILogger]: Checked inductivity of 2416 backedges. 0 proven. 2416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:52,968 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:52,968 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 11:22:52,977 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:55,954 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2019-05-23 11:22:55,955 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:55,961 INFO L146 ILogger]: Trace formula consists of 623 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:22:55,965 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:56,098 INFO L146 ILogger]: Checked inductivity of 2416 backedges. 0 proven. 2416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:56,119 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:56,119 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-05-23 11:22:56,121 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:22:56,121 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:22:56,122 INFO L146 ILogger]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:22:56,122 INFO L146 ILogger]: Start difference. First operand 395 states and 414 transitions. Second operand 37 states. [2019-05-23 11:22:57,118 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:57,119 INFO L146 ILogger]: Finished difference Result 497 states and 523 transitions. [2019-05-23 11:22:57,119 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:22:57,119 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 353 [2019-05-23 11:22:57,120 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:57,122 INFO L146 ILogger]: With dead ends: 497 [2019-05-23 11:22:57,123 INFO L146 ILogger]: Without dead ends: 463 [2019-05-23 11:22:57,124 INFO L146 ILogger]: 0 DeclaredPredicates, 419 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:22:57,125 INFO L146 ILogger]: Start minimizeSevpa. Operand 463 states. [2019-05-23 11:22:57,130 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 463 to 417. [2019-05-23 11:22:57,131 INFO L146 ILogger]: Start removeUnreachable. Operand 417 states. [2019-05-23 11:22:57,132 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 417 states to 417 states and 437 transitions. [2019-05-23 11:22:57,132 INFO L146 ILogger]: Start accepts. Automaton has 417 states and 437 transitions. Word has length 353 [2019-05-23 11:22:57,132 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:57,132 INFO L146 ILogger]: Abstraction has 417 states and 437 transitions. [2019-05-23 11:22:57,133 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:22:57,133 INFO L146 ILogger]: Start isEmpty. Operand 417 states and 437 transitions. [2019-05-23 11:22:57,135 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 374 [2019-05-23 11:22:57,135 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:57,135 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:57,136 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:57,136 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:57,136 INFO L146 ILogger]: Analyzing trace with hash 2103065746, now seen corresponding path program 16 times [2019-05-23 11:22:57,136 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:57,136 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:57,137 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:57,137 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:57,138 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:57,170 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:59,652 INFO L146 ILogger]: Checked inductivity of 2737 backedges. 0 proven. 2737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:59,652 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:59,653 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:22:59,662 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST