java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_copy6_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:17:32,375 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:17:32,377 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:17:32,389 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:17:32,389 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:17:32,390 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:17:32,392 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:17:32,393 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:17:32,395 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:17:32,396 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:17:32,397 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:17:32,397 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:17:32,398 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:17:32,399 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:17:32,400 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:17:32,401 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:17:32,402 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:17:32,409 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:17:32,411 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:17:32,415 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:17:32,417 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:17:32,418 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:17:32,423 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:17:32,423 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:17:32,424 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:17:32,424 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:17:32,425 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:17:32,426 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:17:32,426 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:17:32,427 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:17:32,427 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:17:32,428 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:17:32,429 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:17:32,430 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:17:32,430 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:17:32,430 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:17:32,431 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:17:32,431 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:17:32,432 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:17:32,432 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:17:32,456 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:17:32,457 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:17:32,458 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:17:32,458 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:17:32,458 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:17:32,458 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:17:32,459 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:17:32,459 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:17:32,459 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:17:32,459 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:17:32,459 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:17:32,460 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:17:32,460 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:17:32,460 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:17:32,460 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:17:32,460 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:17:32,461 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:17:32,461 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:17:32,461 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:17:32,461 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:17:32,461 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:17:32,462 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:17:32,462 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:17:32,462 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:17:32,462 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:17:32,462 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:17:32,463 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:17:32,463 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:17:32,463 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 11:17:32,511 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:17:32,526 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:17:32,533 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:17:32,534 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:17:32,535 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:17:32,535 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy6_true-unreach-call_ground.i [2019-05-23 11:17:32,601 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc6b7958/c885c59bf01a4797b5e0dd7f63425ed9/FLAG1c4122271 [2019-05-23 11:17:33,027 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:17:33,028 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy6_true-unreach-call_ground.i [2019-05-23 11:17:33,035 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc6b7958/c885c59bf01a4797b5e0dd7f63425ed9/FLAG1c4122271 [2019-05-23 11:17:33,396 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbc6b7958/c885c59bf01a4797b5e0dd7f63425ed9 [2019-05-23 11:17:33,406 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:17:33,408 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:17:33,409 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:33,409 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:17:33,412 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:17:33,413 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,416 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68084ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33, skipping insertion in model container [2019-05-23 11:17:33,416 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,424 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:17:33,445 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:17:33,628 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:33,633 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:17:33,681 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:33,720 INFO L146 ILogger]: Completed translation [2019-05-23 11:17:33,720 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33 WrapperNode [2019-05-23 11:17:33,721 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:33,722 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:33,723 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:17:33,723 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:17:33,734 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,755 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,801 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:33,801 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:17:33,801 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:17:33,802 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:17:33,814 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,814 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,817 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,817 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,844 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,986 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,991 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (1/1) ... [2019-05-23 11:17:33,996 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:17:33,996 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:17:33,997 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:17:34,000 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:17:34,001 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:17:34,055 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:17:34,055 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:17:34,055 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:17:34,056 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:17:34,056 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:17:34,056 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:17:34,716 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:17:34,716 INFO L146 ILogger]: Removed 14 assume(true) statements. [2019-05-23 11:17:34,717 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:34 BoogieIcfgContainer [2019-05-23 11:17:34,717 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:17:34,718 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:17:34,718 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:17:34,721 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:17:34,722 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:17:33" (1/3) ... [2019-05-23 11:17:34,723 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c8bb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:34, skipping insertion in model container [2019-05-23 11:17:34,723 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:33" (2/3) ... [2019-05-23 11:17:34,723 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c8bb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:34, skipping insertion in model container [2019-05-23 11:17:34,723 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:34" (3/3) ... [2019-05-23 11:17:34,725 INFO L146 ILogger]: Analyzing ICFG standard_copy6_true-unreach-call_ground.i [2019-05-23 11:17:34,733 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:17:34,740 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:17:34,756 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:17:34,788 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:17:34,789 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:17:34,789 INFO L146 ILogger]: Hoare is true [2019-05-23 11:17:34,789 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:17:34,789 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:17:34,790 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:17:34,790 INFO L146 ILogger]: Difference is false [2019-05-23 11:17:34,790 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:17:34,790 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:17:34,806 INFO L146 ILogger]: Start isEmpty. Operand 103 states. [2019-05-23 11:17:34,814 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:17:34,815 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:34,816 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] [2019-05-23 11:17:34,817 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:34,822 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:34,822 INFO L146 ILogger]: Analyzing trace with hash 786989897, now seen corresponding path program 1 times [2019-05-23 11:17:34,824 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:34,824 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:34,866 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:34,866 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:34,866 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:34,924 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:35,001 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:35,004 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:35,004 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:17:35,008 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:17:35,021 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:17:35,022 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:17:35,025 INFO L146 ILogger]: Start difference. First operand 103 states. Second operand 3 states. [2019-05-23 11:17:35,107 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:35,107 INFO L146 ILogger]: Finished difference Result 192 states and 224 transitions. [2019-05-23 11:17:35,108 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:17:35,109 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 37 [2019-05-23 11:17:35,110 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:35,120 INFO L146 ILogger]: With dead ends: 192 [2019-05-23 11:17:35,120 INFO L146 ILogger]: Without dead ends: 91 [2019-05-23 11:17:35,124 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:17:35,138 INFO L146 ILogger]: Start minimizeSevpa. Operand 91 states. [2019-05-23 11:17:35,156 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 91 to 86. [2019-05-23 11:17:35,158 INFO L146 ILogger]: Start removeUnreachable. Operand 86 states. [2019-05-23 11:17:35,160 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2019-05-23 11:17:35,162 INFO L146 ILogger]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 37 [2019-05-23 11:17:35,162 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:35,162 INFO L146 ILogger]: Abstraction has 86 states and 93 transitions. [2019-05-23 11:17:35,162 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:17:35,163 INFO L146 ILogger]: Start isEmpty. Operand 86 states and 93 transitions. [2019-05-23 11:17:35,164 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 45 [2019-05-23 11:17:35,165 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:35,165 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] [2019-05-23 11:17:35,165 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:35,166 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:35,166 INFO L146 ILogger]: Analyzing trace with hash 579250762, now seen corresponding path program 1 times [2019-05-23 11:17:35,166 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:35,166 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:35,167 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:35,168 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:35,168 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:35,193 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:35,313 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:35,314 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:35,314 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:35,334 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:35,382 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:35,384 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:17:35,391 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:35,521 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:17:35,549 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:17:35,550 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:17:35,551 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:17:35,551 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:17:35,552 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:17:35,552 INFO L146 ILogger]: Start difference. First operand 86 states and 93 transitions. Second operand 6 states. [2019-05-23 11:17:36,176 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:36,177 INFO L146 ILogger]: Finished difference Result 199 states and 219 transitions. [2019-05-23 11:17:36,182 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:17:36,182 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 44 [2019-05-23 11:17:36,182 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:36,184 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:17:36,184 INFO L146 ILogger]: Without dead ends: 134 [2019-05-23 11:17:36,187 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:17:36,188 INFO L146 ILogger]: Start minimizeSevpa. Operand 134 states. [2019-05-23 11:17:36,210 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 134 to 99. [2019-05-23 11:17:36,210 INFO L146 ILogger]: Start removeUnreachable. Operand 99 states. [2019-05-23 11:17:36,212 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2019-05-23 11:17:36,212 INFO L146 ILogger]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 44 [2019-05-23 11:17:36,212 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:36,215 INFO L146 ILogger]: Abstraction has 99 states and 106 transitions. [2019-05-23 11:17:36,215 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:17:36,215 INFO L146 ILogger]: Start isEmpty. Operand 99 states and 106 transitions. [2019-05-23 11:17:36,218 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:17:36,219 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:36,220 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:36,220 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:36,220 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:36,220 INFO L146 ILogger]: Analyzing trace with hash -1412084398, now seen corresponding path program 1 times [2019-05-23 11:17:36,221 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:36,221 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:36,222 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:36,222 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:36,222 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:36,285 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:36,469 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:17:36,469 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:36,469 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:36,486 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:36,548 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:36,549 INFO L146 ILogger]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:36,553 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:36,663 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:17:36,682 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:36,683 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:17:36,683 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:17:36,684 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:17:36,685 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:17:36,685 INFO L146 ILogger]: Start difference. First operand 99 states and 106 transitions. Second operand 10 states. [2019-05-23 11:17:37,771 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:37,771 INFO L146 ILogger]: Finished difference Result 219 states and 234 transitions. [2019-05-23 11:17:37,772 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:17:37,772 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 93 [2019-05-23 11:17:37,773 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:37,774 INFO L146 ILogger]: With dead ends: 219 [2019-05-23 11:17:37,774 INFO L146 ILogger]: Without dead ends: 148 [2019-05-23 11:17:37,775 INFO L146 ILogger]: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:17:37,776 INFO L146 ILogger]: Start minimizeSevpa. Operand 148 states. [2019-05-23 11:17:37,784 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 148 to 113. [2019-05-23 11:17:37,784 INFO L146 ILogger]: Start removeUnreachable. Operand 113 states. [2019-05-23 11:17:37,785 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2019-05-23 11:17:37,786 INFO L146 ILogger]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 93 [2019-05-23 11:17:37,786 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:37,786 INFO L146 ILogger]: Abstraction has 113 states and 120 transitions. [2019-05-23 11:17:37,786 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:17:37,787 INFO L146 ILogger]: Start isEmpty. Operand 113 states and 120 transitions. [2019-05-23 11:17:37,789 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 108 [2019-05-23 11:17:37,789 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:37,790 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:37,790 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:37,790 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:37,791 INFO L146 ILogger]: Analyzing trace with hash 763459060, now seen corresponding path program 2 times [2019-05-23 11:17:37,791 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:37,791 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:37,795 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:37,796 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:37,796 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:37,840 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:37,981 INFO L146 ILogger]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-05-23 11:17:37,982 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:37,982 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:37,992 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:38,063 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:38,063 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:38,064 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:38,070 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:38,235 INFO L146 ILogger]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:17:38,253 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:38,254 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:17:38,254 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:17:38,255 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:17:38,255 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:17:38,255 INFO L146 ILogger]: Start difference. First operand 113 states and 120 transitions. Second operand 12 states. [2019-05-23 11:17:38,678 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:38,678 INFO L146 ILogger]: Finished difference Result 235 states and 250 transitions. [2019-05-23 11:17:38,680 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:17:38,680 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 107 [2019-05-23 11:17:38,681 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:38,682 INFO L146 ILogger]: With dead ends: 235 [2019-05-23 11:17:38,682 INFO L146 ILogger]: Without dead ends: 157 [2019-05-23 11:17:38,683 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:17:38,684 INFO L146 ILogger]: Start minimizeSevpa. Operand 157 states. [2019-05-23 11:17:38,692 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 157 to 127. [2019-05-23 11:17:38,692 INFO L146 ILogger]: Start removeUnreachable. Operand 127 states. [2019-05-23 11:17:38,693 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 127 states to 127 states and 134 transitions. [2019-05-23 11:17:38,694 INFO L146 ILogger]: Start accepts. Automaton has 127 states and 134 transitions. Word has length 107 [2019-05-23 11:17:38,694 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:38,694 INFO L146 ILogger]: Abstraction has 127 states and 134 transitions. [2019-05-23 11:17:38,694 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:17:38,694 INFO L146 ILogger]: Start isEmpty. Operand 127 states and 134 transitions. [2019-05-23 11:17:38,696 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 122 [2019-05-23 11:17:38,696 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:38,697 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:38,697 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:38,697 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:38,697 INFO L146 ILogger]: Analyzing trace with hash 129937099, now seen corresponding path program 3 times [2019-05-23 11:17:38,698 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:38,698 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:38,699 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:38,699 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:38,699 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:38,729 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:38,857 INFO L146 ILogger]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-05-23 11:17:38,857 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:38,857 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:38,868 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:38,910 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:17:38,910 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:38,911 INFO L146 ILogger]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:38,916 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:38,961 INFO L146 ILogger]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-05-23 11:17:38,984 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:38,984 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:38,985 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:38,985 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:38,985 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:38,986 INFO L146 ILogger]: Start difference. First operand 127 states and 134 transitions. Second operand 7 states. [2019-05-23 11:17:39,191 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:39,191 INFO L146 ILogger]: Finished difference Result 197 states and 208 transitions. [2019-05-23 11:17:39,193 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:17:39,193 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 121 [2019-05-23 11:17:39,194 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:39,195 INFO L146 ILogger]: With dead ends: 197 [2019-05-23 11:17:39,195 INFO L146 ILogger]: Without dead ends: 154 [2019-05-23 11:17:39,196 INFO L146 ILogger]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:17:39,196 INFO L146 ILogger]: Start minimizeSevpa. Operand 154 states. [2019-05-23 11:17:39,204 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 154 to 134. [2019-05-23 11:17:39,205 INFO L146 ILogger]: Start removeUnreachable. Operand 134 states. [2019-05-23 11:17:39,210 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 134 states to 134 states and 141 transitions. [2019-05-23 11:17:39,210 INFO L146 ILogger]: Start accepts. Automaton has 134 states and 141 transitions. Word has length 121 [2019-05-23 11:17:39,211 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:39,211 INFO L146 ILogger]: Abstraction has 134 states and 141 transitions. [2019-05-23 11:17:39,211 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:17:39,211 INFO L146 ILogger]: Start isEmpty. Operand 134 states and 141 transitions. [2019-05-23 11:17:39,213 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 129 [2019-05-23 11:17:39,213 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:39,213 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:39,214 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:39,214 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:39,214 INFO L146 ILogger]: Analyzing trace with hash 749981448, now seen corresponding path program 4 times [2019-05-23 11:17:39,214 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:39,215 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:39,217 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:39,218 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:39,218 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:39,261 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:39,421 INFO L146 ILogger]: Checked inductivity of 76 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:17:39,422 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:39,422 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:39,434 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:39,645 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:39,645 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:39,648 INFO L146 ILogger]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:17:39,658 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:39,826 INFO L146 ILogger]: Checked inductivity of 76 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:17:39,846 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:39,846 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2019-05-23 11:17:39,847 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:17:39,847 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:17:39,847 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:17:39,847 INFO L146 ILogger]: Start difference. First operand 134 states and 141 transitions. Second operand 14 states. [2019-05-23 11:17:40,403 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:40,403 INFO L146 ILogger]: Finished difference Result 260 states and 275 transitions. [2019-05-23 11:17:40,404 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:17:40,404 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 128 [2019-05-23 11:17:40,405 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:40,406 INFO L146 ILogger]: With dead ends: 260 [2019-05-23 11:17:40,406 INFO L146 ILogger]: Without dead ends: 168 [2019-05-23 11:17:40,407 INFO L146 ILogger]: 0 DeclaredPredicates, 142 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:17:40,408 INFO L146 ILogger]: Start minimizeSevpa. Operand 168 states. [2019-05-23 11:17:40,415 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 168 to 148. [2019-05-23 11:17:40,415 INFO L146 ILogger]: Start removeUnreachable. Operand 148 states. [2019-05-23 11:17:40,416 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 148 states to 148 states and 155 transitions. [2019-05-23 11:17:40,416 INFO L146 ILogger]: Start accepts. Automaton has 148 states and 155 transitions. Word has length 128 [2019-05-23 11:17:40,416 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:40,416 INFO L146 ILogger]: Abstraction has 148 states and 155 transitions. [2019-05-23 11:17:40,416 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:17:40,417 INFO L146 ILogger]: Start isEmpty. Operand 148 states and 155 transitions. [2019-05-23 11:17:40,419 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 143 [2019-05-23 11:17:40,419 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:40,420 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:40,420 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:40,420 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:40,420 INFO L146 ILogger]: Analyzing trace with hash -481617583, now seen corresponding path program 5 times [2019-05-23 11:17:40,421 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:40,421 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:40,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:40,422 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:40,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:40,441 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:40,530 INFO L146 ILogger]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:17:40,530 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:40,530 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:40,540 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:40,993 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:17:40,993 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:40,995 INFO L146 ILogger]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:40,998 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:41,036 INFO L146 ILogger]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:17:41,055 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:41,055 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:41,057 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:41,057 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:41,057 INFO L146 ILogger]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:41,057 INFO L146 ILogger]: Start difference. First operand 148 states and 155 transitions. Second operand 7 states. [2019-05-23 11:17:41,341 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:41,342 INFO L146 ILogger]: Finished difference Result 197 states and 207 transitions. [2019-05-23 11:17:41,342 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:17:41,342 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 142 [2019-05-23 11:17:41,343 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:41,344 INFO L146 ILogger]: With dead ends: 197 [2019-05-23 11:17:41,345 INFO L146 ILogger]: Without dead ends: 172 [2019-05-23 11:17:41,345 INFO L146 ILogger]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:17:41,346 INFO L146 ILogger]: Start minimizeSevpa. Operand 172 states. [2019-05-23 11:17:41,352 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 172 to 162. [2019-05-23 11:17:41,353 INFO L146 ILogger]: Start removeUnreachable. Operand 162 states. [2019-05-23 11:17:41,353 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 162 states to 162 states and 169 transitions. [2019-05-23 11:17:41,353 INFO L146 ILogger]: Start accepts. Automaton has 162 states and 169 transitions. Word has length 142 [2019-05-23 11:17:41,354 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:41,354 INFO L146 ILogger]: Abstraction has 162 states and 169 transitions. [2019-05-23 11:17:41,354 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:17:41,354 INFO L146 ILogger]: Start isEmpty. Operand 162 states and 169 transitions. [2019-05-23 11:17:41,356 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 157 [2019-05-23 11:17:41,356 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:41,356 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:41,357 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:41,357 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:41,357 INFO L146 ILogger]: Analyzing trace with hash -1690212950, now seen corresponding path program 6 times [2019-05-23 11:17:41,357 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:41,357 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:41,358 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:41,358 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:41,359 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:41,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:41,533 INFO L146 ILogger]: Checked inductivity of 129 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:17:41,533 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:41,533 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:41,547 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:41,695 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:17:41,695 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:41,697 INFO L146 ILogger]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:41,699 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:41,880 INFO L146 ILogger]: Checked inductivity of 129 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-05-23 11:17:41,898 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:41,899 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2019-05-23 11:17:41,899 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:17:41,900 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:17:41,900 INFO L146 ILogger]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:17:41,900 INFO L146 ILogger]: Start difference. First operand 162 states and 169 transitions. Second operand 18 states. [2019-05-23 11:17:42,545 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:42,545 INFO L146 ILogger]: Finished difference Result 299 states and 314 transitions. [2019-05-23 11:17:42,554 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:17:42,554 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 156 [2019-05-23 11:17:42,554 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:42,556 INFO L146 ILogger]: With dead ends: 299 [2019-05-23 11:17:42,556 INFO L146 ILogger]: Without dead ends: 186 [2019-05-23 11:17:42,559 INFO L146 ILogger]: 0 DeclaredPredicates, 182 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:17:42,559 INFO L146 ILogger]: Start minimizeSevpa. Operand 186 states. [2019-05-23 11:17:42,567 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 186 to 176. [2019-05-23 11:17:42,567 INFO L146 ILogger]: Start removeUnreachable. Operand 176 states. [2019-05-23 11:17:42,571 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 176 states to 176 states and 183 transitions. [2019-05-23 11:17:42,572 INFO L146 ILogger]: Start accepts. Automaton has 176 states and 183 transitions. Word has length 156 [2019-05-23 11:17:42,572 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:42,572 INFO L146 ILogger]: Abstraction has 176 states and 183 transitions. [2019-05-23 11:17:42,572 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:17:42,572 INFO L146 ILogger]: Start isEmpty. Operand 176 states and 183 transitions. [2019-05-23 11:17:42,580 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 171 [2019-05-23 11:17:42,580 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:42,580 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:42,581 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:42,581 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:42,581 INFO L146 ILogger]: Analyzing trace with hash -374224113, now seen corresponding path program 7 times [2019-05-23 11:17:42,581 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:42,581 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:42,583 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:42,583 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:42,583 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:42,621 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:42,850 INFO L146 ILogger]: Checked inductivity of 180 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-05-23 11:17:42,851 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:42,851 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 11:17:42,860 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:42,901 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:42,902 INFO L146 ILogger]: Trace formula consists of 294 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:17:42,903 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:42,954 INFO L146 ILogger]: Checked inductivity of 180 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-05-23 11:17:42,973 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:42,973 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:17:42,974 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:17:42,974 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:17:42,975 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:17:42,975 INFO L146 ILogger]: Start difference. First operand 176 states and 183 transitions. Second operand 17 states. [2019-05-23 11:17:43,171 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:43,171 INFO L146 ILogger]: Finished difference Result 308 states and 322 transitions. [2019-05-23 11:17:43,177 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:17:43,177 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 170 [2019-05-23 11:17:43,178 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:43,178 INFO L146 ILogger]: With dead ends: 308 [2019-05-23 11:17:43,179 INFO L146 ILogger]: Without dead ends: 188 [2019-05-23 11:17:43,180 INFO L146 ILogger]: 0 DeclaredPredicates, 196 GetRequests, 169 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 11:17:43,180 INFO L146 ILogger]: Start minimizeSevpa. Operand 188 states. [2019-05-23 11:17:43,184 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 188 to 183. [2019-05-23 11:17:43,184 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:17:43,185 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 190 transitions. [2019-05-23 11:17:43,185 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 190 transitions. Word has length 170 [2019-05-23 11:17:43,185 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:43,186 INFO L146 ILogger]: Abstraction has 183 states and 190 transitions. [2019-05-23 11:17:43,186 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:17:43,186 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 190 transitions. [2019-05-23 11:17:43,187 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 178 [2019-05-23 11:17:43,188 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:43,188 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:43,188 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:43,188 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:43,189 INFO L146 ILogger]: Analyzing trace with hash 770830338, now seen corresponding path program 8 times [2019-05-23 11:17:43,189 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:43,189 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:43,190 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,190 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:43,190 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,210 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:44,716 INFO L146 ILogger]: Checked inductivity of 223 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-05-23 11:17:44,716 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:44,716 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 11:17:44,726 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:44,790 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:44,790 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:44,791 INFO L146 ILogger]: Trace formula consists of 304 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:17:44,795 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:44,862 INFO L146 ILogger]: Checked inductivity of 223 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-05-23 11:17:44,893 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:44,893 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:17:44,894 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:17:44,894 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:17:44,894 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:17:44,895 INFO L146 ILogger]: Start difference. First operand 183 states and 190 transitions. Second operand 19 states. [2019-05-23 11:17:45,229 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:45,230 INFO L146 ILogger]: Finished difference Result 315 states and 329 transitions. [2019-05-23 11:17:45,230 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:17:45,230 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 177 [2019-05-23 11:17:45,231 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:45,232 INFO L146 ILogger]: With dead ends: 315 [2019-05-23 11:17:45,232 INFO L146 ILogger]: Without dead ends: 195 [2019-05-23 11:17:45,233 INFO L146 ILogger]: 0 DeclaredPredicates, 207 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:17:45,233 INFO L146 ILogger]: Start minimizeSevpa. Operand 195 states. [2019-05-23 11:17:45,237 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 195 to 190. [2019-05-23 11:17:45,238 INFO L146 ILogger]: Start removeUnreachable. Operand 190 states. [2019-05-23 11:17:45,238 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 190 states to 190 states and 197 transitions. [2019-05-23 11:17:45,239 INFO L146 ILogger]: Start accepts. Automaton has 190 states and 197 transitions. Word has length 177 [2019-05-23 11:17:45,239 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:45,239 INFO L146 ILogger]: Abstraction has 190 states and 197 transitions. [2019-05-23 11:17:45,239 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:17:45,239 INFO L146 ILogger]: Start isEmpty. Operand 190 states and 197 transitions. [2019-05-23 11:17:45,241 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:17:45,241 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:45,242 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:45,242 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:45,242 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:45,242 INFO L146 ILogger]: Analyzing trace with hash -423697489, now seen corresponding path program 9 times [2019-05-23 11:17:45,243 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:45,243 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:45,243 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:45,244 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:45,244 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:45,265 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:45,536 INFO L146 ILogger]: Checked inductivity of 273 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-05-23 11:17:45,536 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:45,536 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 11:17:45,545 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:45,615 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:17:45,615 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:45,616 INFO L146 ILogger]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:45,620 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:45,891 INFO L146 ILogger]: Checked inductivity of 273 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2019-05-23 11:17:45,911 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:45,912 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7] total 24 [2019-05-23 11:17:45,912 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:17:45,913 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:17:45,913 INFO L146 ILogger]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:17:45,913 INFO L146 ILogger]: Start difference. First operand 190 states and 197 transitions. Second operand 24 states. [2019-05-23 11:17:46,582 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:46,582 INFO L146 ILogger]: Finished difference Result 334 states and 349 transitions. [2019-05-23 11:17:46,583 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:17:46,583 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 184 [2019-05-23 11:17:46,583 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:46,585 INFO L146 ILogger]: With dead ends: 334 [2019-05-23 11:17:46,585 INFO L146 ILogger]: Without dead ends: 214 [2019-05-23 11:17:46,587 INFO L146 ILogger]: 0 DeclaredPredicates, 222 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=445, Invalid=1447, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:17:46,587 INFO L146 ILogger]: Start minimizeSevpa. Operand 214 states. [2019-05-23 11:17:46,591 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 214 to 204. [2019-05-23 11:17:46,591 INFO L146 ILogger]: Start removeUnreachable. Operand 204 states. [2019-05-23 11:17:46,592 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 204 states to 204 states and 211 transitions. [2019-05-23 11:17:46,592 INFO L146 ILogger]: Start accepts. Automaton has 204 states and 211 transitions. Word has length 184 [2019-05-23 11:17:46,592 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:46,592 INFO L146 ILogger]: Abstraction has 204 states and 211 transitions. [2019-05-23 11:17:46,593 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:17:46,593 INFO L146 ILogger]: Start isEmpty. Operand 204 states and 211 transitions. [2019-05-23 11:17:46,594 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 199 [2019-05-23 11:17:46,594 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:46,594 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:46,594 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:46,595 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:46,595 INFO L146 ILogger]: Analyzing trace with hash 1232905777, now seen corresponding path program 10 times [2019-05-23 11:17:46,595 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:46,595 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:46,596 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:46,596 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:46,596 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:46,617 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:47,119 INFO L146 ILogger]: Checked inductivity of 345 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-05-23 11:17:47,120 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:47,120 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 11:17:47,128 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:47,642 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:47,642 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:47,644 INFO L146 ILogger]: Trace formula consists of 334 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:17:47,647 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:47,716 INFO L146 ILogger]: Checked inductivity of 345 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-05-23 11:17:47,741 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:47,741 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:17:47,741 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:17:47,742 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:17:47,742 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:47,742 INFO L146 ILogger]: Start difference. First operand 204 states and 211 transitions. Second operand 23 states. [2019-05-23 11:17:48,066 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:48,066 INFO L146 ILogger]: Finished difference Result 343 states and 357 transitions. [2019-05-23 11:17:48,066 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:17:48,066 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 198 [2019-05-23 11:17:48,066 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:48,067 INFO L146 ILogger]: With dead ends: 343 [2019-05-23 11:17:48,068 INFO L146 ILogger]: Without dead ends: 216 [2019-05-23 11:17:48,069 INFO L146 ILogger]: 0 DeclaredPredicates, 236 GetRequests, 197 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 11:17:48,069 INFO L146 ILogger]: Start minimizeSevpa. Operand 216 states. [2019-05-23 11:17:48,073 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 216 to 211. [2019-05-23 11:17:48,073 INFO L146 ILogger]: Start removeUnreachable. Operand 211 states. [2019-05-23 11:17:48,074 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 211 states to 211 states and 218 transitions. [2019-05-23 11:17:48,074 INFO L146 ILogger]: Start accepts. Automaton has 211 states and 218 transitions. Word has length 198 [2019-05-23 11:17:48,075 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:48,075 INFO L146 ILogger]: Abstraction has 211 states and 218 transitions. [2019-05-23 11:17:48,075 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:17:48,075 INFO L146 ILogger]: Start isEmpty. Operand 211 states and 218 transitions. [2019-05-23 11:17:48,076 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 206 [2019-05-23 11:17:48,076 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:48,076 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:48,077 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:48,077 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:48,077 INFO L146 ILogger]: Analyzing trace with hash 548712612, now seen corresponding path program 11 times [2019-05-23 11:17:48,077 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:48,077 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:48,078 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,078 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:48,078 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,100 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,438 INFO L146 ILogger]: Checked inductivity of 409 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-05-23 11:17:48,439 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:48,439 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 11:17:48,447 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:01,175 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:18:01,175 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,184 INFO L146 ILogger]: Trace formula consists of 344 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:01,186 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:01,292 INFO L146 ILogger]: Checked inductivity of 409 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2019-05-23 11:18:01,314 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:01,314 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 7] total 28 [2019-05-23 11:18:01,315 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:18:01,315 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:18:01,315 INFO L146 ILogger]: CoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:18:01,315 INFO L146 ILogger]: Start difference. First operand 211 states and 218 transitions. Second operand 28 states. [2019-05-23 11:18:02,029 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:02,041 INFO L146 ILogger]: Finished difference Result 362 states and 377 transitions. [2019-05-23 11:18:02,042 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:18:02,042 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 205 [2019-05-23 11:18:02,043 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:02,044 INFO L146 ILogger]: With dead ends: 362 [2019-05-23 11:18:02,044 INFO L146 ILogger]: Without dead ends: 235 [2019-05-23 11:18:02,046 INFO L146 ILogger]: 0 DeclaredPredicates, 251 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=645, Invalid=2007, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:18:02,047 INFO L146 ILogger]: Start minimizeSevpa. Operand 235 states. [2019-05-23 11:18:02,050 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 235 to 225. [2019-05-23 11:18:02,051 INFO L146 ILogger]: Start removeUnreachable. Operand 225 states. [2019-05-23 11:18:02,051 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 225 states to 225 states and 232 transitions. [2019-05-23 11:18:02,052 INFO L146 ILogger]: Start accepts. Automaton has 225 states and 232 transitions. Word has length 205 [2019-05-23 11:18:02,052 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:02,052 INFO L146 ILogger]: Abstraction has 225 states and 232 transitions. [2019-05-23 11:18:02,052 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:18:02,052 INFO L146 ILogger]: Start isEmpty. Operand 225 states and 232 transitions. [2019-05-23 11:18:02,053 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 220 [2019-05-23 11:18:02,054 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:02,054 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:02,054 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:02,054 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:02,055 INFO L146 ILogger]: Analyzing trace with hash -1941888620, now seen corresponding path program 12 times [2019-05-23 11:18:02,055 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:02,055 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:02,056 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,056 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:02,056 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,080 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,560 INFO L146 ILogger]: Checked inductivity of 495 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-05-23 11:18:02,561 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:02,561 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:02,570 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:02,672 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:18:02,672 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,676 INFO L146 ILogger]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:02,679 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:02,795 INFO L146 ILogger]: Checked inductivity of 495 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2019-05-23 11:18:02,814 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:02,814 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7] total 30 [2019-05-23 11:18:02,815 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:18:02,815 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:18:02,815 INFO L146 ILogger]: CoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:18:02,815 INFO L146 ILogger]: Start difference. First operand 225 states and 232 transitions. Second operand 30 states. [2019-05-23 11:18:04,910 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:04,910 INFO L146 ILogger]: Finished difference Result 383 states and 398 transitions. [2019-05-23 11:18:04,911 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:18:04,911 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 219 [2019-05-23 11:18:04,911 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:04,913 INFO L146 ILogger]: With dead ends: 383 [2019-05-23 11:18:04,913 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:18:04,915 INFO L146 ILogger]: 0 DeclaredPredicates, 269 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=760, Invalid=2320, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:18:04,915 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:18:04,919 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 239. [2019-05-23 11:18:04,919 INFO L146 ILogger]: Start removeUnreachable. Operand 239 states. [2019-05-23 11:18:04,920 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 239 states to 239 states and 246 transitions. [2019-05-23 11:18:04,920 INFO L146 ILogger]: Start accepts. Automaton has 239 states and 246 transitions. Word has length 219 [2019-05-23 11:18:04,921 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:04,921 INFO L146 ILogger]: Abstraction has 239 states and 246 transitions. [2019-05-23 11:18:04,921 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:18:04,921 INFO L146 ILogger]: Start isEmpty. Operand 239 states and 246 transitions. [2019-05-23 11:18:04,922 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 234 [2019-05-23 11:18:04,922 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:04,922 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:04,922 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:04,922 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:04,922 INFO L146 ILogger]: Analyzing trace with hash 1862339979, now seen corresponding path program 13 times [2019-05-23 11:18:04,922 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:04,923 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:04,923 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,923 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:04,923 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,946 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,428 INFO L146 ILogger]: Checked inductivity of 588 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-05-23 11:18:05,429 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:05,429 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:05,438 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:05,494 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,495 INFO L146 ILogger]: Trace formula consists of 384 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:18:05,499 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:05,597 INFO L146 ILogger]: Checked inductivity of 588 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-05-23 11:18:05,615 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:05,616 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:18:05,616 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:18:05,616 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:18:05,617 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:18:05,617 INFO L146 ILogger]: Start difference. First operand 239 states and 246 transitions. Second operand 29 states. [2019-05-23 11:18:06,298 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:06,298 INFO L146 ILogger]: Finished difference Result 392 states and 406 transitions. [2019-05-23 11:18:06,306 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:18:06,306 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 233 [2019-05-23 11:18:06,306 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:06,308 INFO L146 ILogger]: With dead ends: 392 [2019-05-23 11:18:06,308 INFO L146 ILogger]: Without dead ends: 251 [2019-05-23 11:18:06,309 INFO L146 ILogger]: 0 DeclaredPredicates, 283 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:18:06,310 INFO L146 ILogger]: Start minimizeSevpa. Operand 251 states. [2019-05-23 11:18:06,316 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 251 to 246. [2019-05-23 11:18:06,316 INFO L146 ILogger]: Start removeUnreachable. Operand 246 states. [2019-05-23 11:18:06,317 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 246 states to 246 states and 253 transitions. [2019-05-23 11:18:06,317 INFO L146 ILogger]: Start accepts. Automaton has 246 states and 253 transitions. Word has length 233 [2019-05-23 11:18:06,317 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:06,317 INFO L146 ILogger]: Abstraction has 246 states and 253 transitions. [2019-05-23 11:18:06,318 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:18:06,318 INFO L146 ILogger]: Start isEmpty. Operand 246 states and 253 transitions. [2019-05-23 11:18:06,319 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 241 [2019-05-23 11:18:06,319 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:06,319 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:06,319 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:06,320 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:06,320 INFO L146 ILogger]: Analyzing trace with hash 1029903928, now seen corresponding path program 14 times [2019-05-23 11:18:06,320 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:06,320 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:06,321 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,321 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:06,321 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,354 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,260 INFO L146 ILogger]: Checked inductivity of 673 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-05-23 11:18:07,261 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:07,261 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:07,270 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:07,328 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:07,328 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,329 INFO L146 ILogger]: Trace formula consists of 394 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:18:07,333 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:07,952 INFO L146 ILogger]: Checked inductivity of 673 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-05-23 11:18:08,010 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:08,010 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:18:08,011 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:18:08,012 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:18:08,013 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:18:08,013 INFO L146 ILogger]: Start difference. First operand 246 states and 253 transitions. Second operand 31 states. [2019-05-23 11:18:09,075 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:09,076 INFO L146 ILogger]: Finished difference Result 399 states and 413 transitions. [2019-05-23 11:18:09,076 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:18:09,076 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 240 [2019-05-23 11:18:09,076 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:09,077 INFO L146 ILogger]: With dead ends: 399 [2019-05-23 11:18:09,077 INFO L146 ILogger]: Without dead ends: 258 [2019-05-23 11:18:09,079 INFO L146 ILogger]: 0 DeclaredPredicates, 294 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:18:09,079 INFO L146 ILogger]: Start minimizeSevpa. Operand 258 states. [2019-05-23 11:18:09,083 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 258 to 253. [2019-05-23 11:18:09,083 INFO L146 ILogger]: Start removeUnreachable. Operand 253 states. [2019-05-23 11:18:09,084 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 253 states to 253 states and 260 transitions. [2019-05-23 11:18:09,084 INFO L146 ILogger]: Start accepts. Automaton has 253 states and 260 transitions. Word has length 240 [2019-05-23 11:18:09,084 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:09,084 INFO L146 ILogger]: Abstraction has 253 states and 260 transitions. [2019-05-23 11:18:09,084 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:18:09,085 INFO L146 ILogger]: Start isEmpty. Operand 253 states and 260 transitions. [2019-05-23 11:18:09,086 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 248 [2019-05-23 11:18:09,086 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:09,086 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:09,086 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:09,087 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:09,087 INFO L146 ILogger]: Analyzing trace with hash 424894699, now seen corresponding path program 15 times [2019-05-23 11:18:09,087 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:09,087 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:09,088 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:09,088 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:09,088 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:09,110 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:10,748 INFO L146 ILogger]: Checked inductivity of 765 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-05-23 11:18:10,748 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:10,748 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:10,756 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:10,814 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:18:10,814 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:10,816 INFO L146 ILogger]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:10,819 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:10,958 INFO L146 ILogger]: Checked inductivity of 765 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2019-05-23 11:18:10,977 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:10,977 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7] total 36 [2019-05-23 11:18:10,978 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:18:10,978 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:18:10,979 INFO L146 ILogger]: CoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:18:10,979 INFO L146 ILogger]: Start difference. First operand 253 states and 260 transitions. Second operand 36 states. [2019-05-23 11:18:12,283 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:12,284 INFO L146 ILogger]: Finished difference Result 418 states and 433 transitions. [2019-05-23 11:18:12,284 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:18:12,284 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 247 [2019-05-23 11:18:12,285 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:12,286 INFO L146 ILogger]: With dead ends: 418 [2019-05-23 11:18:12,286 INFO L146 ILogger]: Without dead ends: 277 [2019-05-23 11:18:12,288 INFO L146 ILogger]: 0 DeclaredPredicates, 309 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1165, Invalid=3391, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:18:12,289 INFO L146 ILogger]: Start minimizeSevpa. Operand 277 states. [2019-05-23 11:18:12,293 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 277 to 267. [2019-05-23 11:18:12,293 INFO L146 ILogger]: Start removeUnreachable. Operand 267 states. [2019-05-23 11:18:12,294 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 267 states to 267 states and 274 transitions. [2019-05-23 11:18:12,294 INFO L146 ILogger]: Start accepts. Automaton has 267 states and 274 transitions. Word has length 247 [2019-05-23 11:18:12,294 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:12,294 INFO L146 ILogger]: Abstraction has 267 states and 274 transitions. [2019-05-23 11:18:12,295 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:18:12,295 INFO L146 ILogger]: Start isEmpty. Operand 267 states and 274 transitions. [2019-05-23 11:18:12,296 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 262 [2019-05-23 11:18:12,296 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:12,296 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:12,297 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:12,297 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:12,297 INFO L146 ILogger]: Analyzing trace with hash 1397308404, now seen corresponding path program 16 times [2019-05-23 11:18:12,297 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:12,297 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:12,298 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:12,298 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:12,298 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:12,321 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:13,421 INFO L146 ILogger]: Checked inductivity of 879 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2019-05-23 11:18:13,421 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:13,421 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:13,430 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:16,520 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:16,520 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:16,525 INFO L146 ILogger]: Trace formula consists of 424 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:18:16,528 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:16,659 INFO L146 ILogger]: Checked inductivity of 879 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2019-05-23 11:18:16,680 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:16,681 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:18:16,681 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:18:16,681 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:18:16,682 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:18:16,682 INFO L146 ILogger]: Start difference. First operand 267 states and 274 transitions. Second operand 35 states. [2019-05-23 11:18:17,380 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:17,380 INFO L146 ILogger]: Finished difference Result 427 states and 441 transitions. [2019-05-23 11:18:17,387 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:18:17,387 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 261 [2019-05-23 11:18:17,387 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:17,389 INFO L146 ILogger]: With dead ends: 427 [2019-05-23 11:18:17,389 INFO L146 ILogger]: Without dead ends: 279 [2019-05-23 11:18:17,390 INFO L146 ILogger]: 0 DeclaredPredicates, 323 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:18:17,391 INFO L146 ILogger]: Start minimizeSevpa. Operand 279 states. [2019-05-23 11:18:17,395 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 279 to 274. [2019-05-23 11:18:17,395 INFO L146 ILogger]: Start removeUnreachable. Operand 274 states. [2019-05-23 11:18:17,395 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 274 states to 274 states and 281 transitions. [2019-05-23 11:18:17,395 INFO L146 ILogger]: Start accepts. Automaton has 274 states and 281 transitions. Word has length 261 [2019-05-23 11:18:17,396 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:17,396 INFO L146 ILogger]: Abstraction has 274 states and 281 transitions. [2019-05-23 11:18:17,396 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:18:17,396 INFO L146 ILogger]: Start isEmpty. Operand 274 states and 281 transitions. [2019-05-23 11:18:17,397 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 269 [2019-05-23 11:18:17,397 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:17,398 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:17,398 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:17,398 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:17,398 INFO L146 ILogger]: Analyzing trace with hash 80523041, now seen corresponding path program 17 times [2019-05-23 11:18:17,399 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:17,399 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:17,399 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:17,399 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:17,400 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:17,426 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:17,908 INFO L146 ILogger]: Checked inductivity of 985 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2019-05-23 11:18:17,909 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:17,909 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:17,924 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1