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-programs/copysome1_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:27:18,324 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:27:18,328 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:27:18,341 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:27:18,341 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:27:18,342 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:27:18,343 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:27:18,345 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:27:18,347 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:27:18,348 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:27:18,349 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:27:18,349 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:27:18,350 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:27:18,351 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:27:18,352 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:27:18,353 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:27:18,354 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:27:18,356 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:27:18,358 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:27:18,363 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:27:18,365 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:27:18,368 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:27:18,371 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:27:18,371 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:27:18,372 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:27:18,376 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:27:18,376 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:27:18,378 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:27:18,378 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:27:18,382 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:27:18,383 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:27:18,387 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:27:18,388 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:27:18,389 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:27:18,389 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:27:18,390 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:27:18,390 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:27:18,392 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:27:18,393 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:27:18,393 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:27:18,420 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:27:18,420 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:27:18,421 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:27:18,421 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:27:18,422 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:27:18,423 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:27:18,423 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:27:18,423 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:27:18,423 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:27:18,424 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:27:18,424 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:27:18,424 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:27:18,424 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:27:18,424 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:27:18,425 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:27:18,425 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:27:18,425 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:27:18,425 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:27:18,426 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:27:18,426 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:27:18,426 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:27:18,426 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:27:18,426 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:27:18,428 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:27:18,428 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:27:18,429 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:27:18,429 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:27:18,429 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:27:18,429 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 11:27:18,481 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:27:18,497 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:27:18,502 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:27:18,504 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:27:18,504 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:27:18,505 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-programs/copysome1_true-unreach-call.i [2019-05-23 11:27:18,557 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f170f6df4/519318e00b7d4814a1c0abde67a9bd5b/FLAG1b451b98f [2019-05-23 11:27:18,990 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:27:18,990 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-programs/copysome1_true-unreach-call.i [2019-05-23 11:27:18,997 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f170f6df4/519318e00b7d4814a1c0abde67a9bd5b/FLAG1b451b98f [2019-05-23 11:27:19,354 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f170f6df4/519318e00b7d4814a1c0abde67a9bd5b [2019-05-23 11:27:19,362 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:27:19,364 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:27:19,365 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:27:19,365 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:27:19,369 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:27:19,370 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,373 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cdd6568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19, skipping insertion in model container [2019-05-23 11:27:19,373 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,380 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:27:19,397 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:27:19,596 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:27:19,601 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:27:19,638 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:27:19,669 INFO L146 ILogger]: Completed translation [2019-05-23 11:27:19,670 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19 WrapperNode [2019-05-23 11:27:19,670 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:27:19,671 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:27:19,671 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:27:19,672 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:27:19,681 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,698 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,727 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:27:19,728 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:27:19,728 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:27:19,728 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:27:19,740 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,740 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,744 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,744 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,763 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,897 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,901 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (1/1) ... [2019-05-23 11:27:19,906 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:27:19,906 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:27:19,907 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:27:19,907 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:27:19,908 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (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 11:27:19,962 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:27:19,963 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:27:19,963 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:27:19,963 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:27:19,963 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:27:19,963 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:27:20,426 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:27:20,426 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:27:20,427 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:27:20 BoogieIcfgContainer [2019-05-23 11:27:20,429 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:27:20,429 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:27:20,430 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:27:20,434 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:27:20,434 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:27:19" (1/3) ... [2019-05-23 11:27:20,435 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798d98a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:27:20, skipping insertion in model container [2019-05-23 11:27:20,435 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:19" (2/3) ... [2019-05-23 11:27:20,436 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798d98a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:27:20, skipping insertion in model container [2019-05-23 11:27:20,436 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:27:20" (3/3) ... [2019-05-23 11:27:20,437 INFO L146 ILogger]: Analyzing ICFG copysome1_true-unreach-call.i [2019-05-23 11:27:20,447 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:27:20,458 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:27:20,475 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:27:20,505 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:27:20,506 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:27:20,506 INFO L146 ILogger]: Hoare is true [2019-05-23 11:27:20,506 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:27:20,506 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:27:20,506 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:27:20,507 INFO L146 ILogger]: Difference is false [2019-05-23 11:27:20,507 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:27:20,507 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:27:20,521 INFO L146 ILogger]: Start isEmpty. Operand 54 states. [2019-05-23 11:27:20,529 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:27:20,529 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:20,530 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] [2019-05-23 11:27:20,531 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:20,536 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:20,536 INFO L146 ILogger]: Analyzing trace with hash -1051674491, now seen corresponding path program 1 times [2019-05-23 11:27:20,538 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:20,538 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:20,578 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:20,578 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:20,578 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:20,620 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:20,661 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 11:27:20,664 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:27:20,667 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:27:20,670 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:27:20,680 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:27:20,681 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:27:20,683 INFO L146 ILogger]: Start difference. First operand 54 states. Second operand 2 states. [2019-05-23 11:27:20,699 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:20,699 INFO L146 ILogger]: Finished difference Result 88 states and 102 transitions. [2019-05-23 11:27:20,700 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:27:20,701 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 24 [2019-05-23 11:27:20,701 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:20,710 INFO L146 ILogger]: With dead ends: 88 [2019-05-23 11:27:20,710 INFO L146 ILogger]: Without dead ends: 46 [2019-05-23 11:27:20,714 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:27:20,728 INFO L146 ILogger]: Start minimizeSevpa. Operand 46 states. [2019-05-23 11:27:20,742 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-05-23 11:27:20,743 INFO L146 ILogger]: Start removeUnreachable. Operand 46 states. [2019-05-23 11:27:20,744 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2019-05-23 11:27:20,746 INFO L146 ILogger]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 24 [2019-05-23 11:27:20,746 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:20,746 INFO L146 ILogger]: Abstraction has 46 states and 50 transitions. [2019-05-23 11:27:20,747 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:27:20,747 INFO L146 ILogger]: Start isEmpty. Operand 46 states and 50 transitions. [2019-05-23 11:27:20,748 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:27:20,748 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:20,748 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] [2019-05-23 11:27:20,749 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:20,749 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:20,749 INFO L146 ILogger]: Analyzing trace with hash 1177969301, now seen corresponding path program 1 times [2019-05-23 11:27:20,749 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:20,749 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:20,750 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:20,751 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:20,751 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:20,764 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:20,820 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 11:27:20,821 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:27:20,821 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:27:20,822 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:27:20,823 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:27:20,823 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:27:20,823 INFO L146 ILogger]: Start difference. First operand 46 states and 50 transitions. Second operand 3 states. [2019-05-23 11:27:20,988 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:20,988 INFO L146 ILogger]: Finished difference Result 88 states and 98 transitions. [2019-05-23 11:27:20,989 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:27:20,989 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 24 [2019-05-23 11:27:20,990 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:20,991 INFO L146 ILogger]: With dead ends: 88 [2019-05-23 11:27:20,991 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:27:20,992 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 11:27:20,993 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:27:20,998 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 48. [2019-05-23 11:27:20,998 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:27:21,000 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2019-05-23 11:27:21,000 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 24 [2019-05-23 11:27:21,000 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:21,000 INFO L146 ILogger]: Abstraction has 48 states and 52 transitions. [2019-05-23 11:27:21,001 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:27:21,001 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 52 transitions. [2019-05-23 11:27:21,002 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:27:21,002 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:21,002 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] [2019-05-23 11:27:21,003 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:21,003 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:21,003 INFO L146 ILogger]: Analyzing trace with hash -1035705138, now seen corresponding path program 1 times [2019-05-23 11:27:21,004 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:21,004 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:21,005 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:21,005 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:21,005 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:21,026 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:21,138 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:27:21,139 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:21,139 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 11:27:21,158 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:21,202 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:21,204 INFO L146 ILogger]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:27:21,210 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:21,272 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:27:21,295 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:21,296 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:27:21,296 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:27:21,297 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:27:21,297 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:27:21,297 INFO L146 ILogger]: Start difference. First operand 48 states and 52 transitions. Second operand 7 states. [2019-05-23 11:27:21,745 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:21,745 INFO L146 ILogger]: Finished difference Result 99 states and 108 transitions. [2019-05-23 11:27:21,748 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:27:21,748 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 39 [2019-05-23 11:27:21,749 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:21,751 INFO L146 ILogger]: With dead ends: 99 [2019-05-23 11:27:21,752 INFO L146 ILogger]: Without dead ends: 72 [2019-05-23 11:27:21,753 INFO L146 ILogger]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:27:21,754 INFO L146 ILogger]: Start minimizeSevpa. Operand 72 states. [2019-05-23 11:27:21,762 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 72 to 58. [2019-05-23 11:27:21,762 INFO L146 ILogger]: Start removeUnreachable. Operand 58 states. [2019-05-23 11:27:21,763 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2019-05-23 11:27:21,764 INFO L146 ILogger]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 39 [2019-05-23 11:27:21,764 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:21,764 INFO L146 ILogger]: Abstraction has 58 states and 62 transitions. [2019-05-23 11:27:21,764 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:27:21,764 INFO L146 ILogger]: Start isEmpty. Operand 58 states and 62 transitions. [2019-05-23 11:27:21,766 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:27:21,767 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:21,767 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:27:21,768 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:21,768 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:21,768 INFO L146 ILogger]: Analyzing trace with hash -1555474712, now seen corresponding path program 2 times [2019-05-23 11:27:21,768 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:21,769 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:21,770 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:21,770 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:21,771 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:21,803 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:21,931 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:27:21,931 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:21,931 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 11:27:21,948 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:21,988 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:21,989 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:21,989 INFO L146 ILogger]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:27:21,992 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:22,063 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:27:22,094 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:22,094 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2019-05-23 11:27:22,095 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:27:22,095 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:27:22,096 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:27:22,098 INFO L146 ILogger]: Start difference. First operand 58 states and 62 transitions. Second operand 9 states. [2019-05-23 11:27:22,615 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:22,615 INFO L146 ILogger]: Finished difference Result 117 states and 128 transitions. [2019-05-23 11:27:22,616 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:27:22,617 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 49 [2019-05-23 11:27:22,617 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:22,618 INFO L146 ILogger]: With dead ends: 117 [2019-05-23 11:27:22,618 INFO L146 ILogger]: Without dead ends: 90 [2019-05-23 11:27:22,619 INFO L146 ILogger]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:27:22,619 INFO L146 ILogger]: Start minimizeSevpa. Operand 90 states. [2019-05-23 11:27:22,625 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 90 to 76. [2019-05-23 11:27:22,625 INFO L146 ILogger]: Start removeUnreachable. Operand 76 states. [2019-05-23 11:27:22,627 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2019-05-23 11:27:22,627 INFO L146 ILogger]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 49 [2019-05-23 11:27:22,627 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:22,627 INFO L146 ILogger]: Abstraction has 76 states and 81 transitions. [2019-05-23 11:27:22,627 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:27:22,627 INFO L146 ILogger]: Start isEmpty. Operand 76 states and 81 transitions. [2019-05-23 11:27:22,629 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:27:22,629 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:22,629 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:27:22,630 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:22,630 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:22,630 INFO L146 ILogger]: Analyzing trace with hash 1866963047, now seen corresponding path program 3 times [2019-05-23 11:27:22,630 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:22,631 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:22,631 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:22,632 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:22,632 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:22,653 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:22,761 INFO L146 ILogger]: Checked inductivity of 40 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:27:22,761 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:22,762 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 11:27:22,772 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:27:22,788 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:27:22,788 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:22,789 INFO L146 ILogger]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:27:22,796 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:22,900 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-05-23 11:27:22,918 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:22,919 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-05-23 11:27:22,919 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:27:22,919 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:27:22,920 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:27:22,920 INFO L146 ILogger]: Start difference. First operand 76 states and 81 transitions. Second operand 10 states. [2019-05-23 11:27:23,401 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:23,402 INFO L146 ILogger]: Finished difference Result 121 states and 132 transitions. [2019-05-23 11:27:23,403 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:27:23,403 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 64 [2019-05-23 11:27:23,404 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:23,405 INFO L146 ILogger]: With dead ends: 121 [2019-05-23 11:27:23,405 INFO L146 ILogger]: Without dead ends: 92 [2019-05-23 11:27:23,406 INFO L146 ILogger]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:27:23,409 INFO L146 ILogger]: Start minimizeSevpa. Operand 92 states. [2019-05-23 11:27:23,416 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 92 to 84. [2019-05-23 11:27:23,416 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:27:23,418 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2019-05-23 11:27:23,418 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 64 [2019-05-23 11:27:23,419 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:23,419 INFO L146 ILogger]: Abstraction has 84 states and 88 transitions. [2019-05-23 11:27:23,419 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:27:23,419 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 88 transitions. [2019-05-23 11:27:23,421 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:27:23,421 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:23,421 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:23,421 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:23,422 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:23,422 INFO L146 ILogger]: Analyzing trace with hash 36908226, now seen corresponding path program 1 times [2019-05-23 11:27:23,422 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:23,422 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:23,423 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:23,423 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:23,423 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:23,448 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:23,634 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:27:23,634 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:23,634 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 11:27:23,644 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:23,682 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:23,683 INFO L146 ILogger]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:27:23,686 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:23,752 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:27:23,770 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:23,770 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:27:23,771 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:27:23,771 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:27:23,771 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:27:23,772 INFO L146 ILogger]: Start difference. First operand 84 states and 88 transitions. Second operand 11 states. [2019-05-23 11:27:24,193 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:24,193 INFO L146 ILogger]: Finished difference Result 145 states and 153 transitions. [2019-05-23 11:27:24,193 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:27:24,194 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 78 [2019-05-23 11:27:24,194 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:24,196 INFO L146 ILogger]: With dead ends: 145 [2019-05-23 11:27:24,196 INFO L146 ILogger]: Without dead ends: 102 [2019-05-23 11:27:24,197 INFO L146 ILogger]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:27:24,198 INFO L146 ILogger]: Start minimizeSevpa. Operand 102 states. [2019-05-23 11:27:24,203 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 102 to 94. [2019-05-23 11:27:24,203 INFO L146 ILogger]: Start removeUnreachable. Operand 94 states. [2019-05-23 11:27:24,204 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2019-05-23 11:27:24,204 INFO L146 ILogger]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 78 [2019-05-23 11:27:24,205 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:24,205 INFO L146 ILogger]: Abstraction has 94 states and 98 transitions. [2019-05-23 11:27:24,205 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:27:24,205 INFO L146 ILogger]: Start isEmpty. Operand 94 states and 98 transitions. [2019-05-23 11:27:24,206 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:27:24,206 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:24,207 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:24,207 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:24,207 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:24,207 INFO L146 ILogger]: Analyzing trace with hash -345214616, now seen corresponding path program 2 times [2019-05-23 11:27:24,207 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:24,208 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:24,208 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:24,209 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:24,209 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:24,231 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:24,554 INFO L146 ILogger]: Checked inductivity of 91 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:27:24,554 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:24,555 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 11:27:24,566 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:24,622 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:24,622 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:24,623 INFO L146 ILogger]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:27:24,627 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:24,927 INFO L146 ILogger]: Checked inductivity of 91 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:27:24,972 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:24,972 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:27:24,973 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:27:24,973 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:27:24,975 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:27:24,975 INFO L146 ILogger]: Start difference. First operand 94 states and 98 transitions. Second operand 13 states. [2019-05-23 11:27:25,442 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:25,442 INFO L146 ILogger]: Finished difference Result 155 states and 163 transitions. [2019-05-23 11:27:25,443 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:27:25,443 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 88 [2019-05-23 11:27:25,443 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:25,444 INFO L146 ILogger]: With dead ends: 155 [2019-05-23 11:27:25,444 INFO L146 ILogger]: Without dead ends: 112 [2019-05-23 11:27:25,445 INFO L146 ILogger]: 0 DeclaredPredicates, 106 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:27:25,446 INFO L146 ILogger]: Start minimizeSevpa. Operand 112 states. [2019-05-23 11:27:25,452 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 112 to 104. [2019-05-23 11:27:25,452 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:27:25,453 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2019-05-23 11:27:25,453 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 88 [2019-05-23 11:27:25,453 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:25,453 INFO L146 ILogger]: Abstraction has 104 states and 108 transitions. [2019-05-23 11:27:25,454 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:27:25,454 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 108 transitions. [2019-05-23 11:27:25,455 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:27:25,455 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:25,455 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:25,456 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:25,456 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:25,456 INFO L146 ILogger]: Analyzing trace with hash -1389584754, now seen corresponding path program 3 times [2019-05-23 11:27:25,456 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:25,456 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:25,457 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:25,457 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:25,457 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:25,478 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:25,694 INFO L146 ILogger]: Checked inductivity of 132 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:27:25,695 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:25,695 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 11:27:25,711 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:27:25,746 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:27:25,746 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:25,747 INFO L146 ILogger]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:27:25,751 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:25,810 INFO L146 ILogger]: Checked inductivity of 132 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-05-23 11:27:25,828 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:25,829 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 17 [2019-05-23 11:27:25,829 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:27:25,830 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:27:25,830 INFO L146 ILogger]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:27:25,830 INFO L146 ILogger]: Start difference. First operand 104 states and 108 transitions. Second operand 17 states. [2019-05-23 11:27:26,359 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:26,359 INFO L146 ILogger]: Finished difference Result 189 states and 200 transitions. [2019-05-23 11:27:26,361 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:27:26,361 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 98 [2019-05-23 11:27:26,362 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:26,363 INFO L146 ILogger]: With dead ends: 189 [2019-05-23 11:27:26,363 INFO L146 ILogger]: Without dead ends: 146 [2019-05-23 11:27:26,364 INFO L146 ILogger]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:27:26,364 INFO L146 ILogger]: Start minimizeSevpa. Operand 146 states. [2019-05-23 11:27:26,371 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 146 to 122. [2019-05-23 11:27:26,371 INFO L146 ILogger]: Start removeUnreachable. Operand 122 states. [2019-05-23 11:27:26,372 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2019-05-23 11:27:26,372 INFO L146 ILogger]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 98 [2019-05-23 11:27:26,373 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:26,373 INFO L146 ILogger]: Abstraction has 122 states and 127 transitions. [2019-05-23 11:27:26,373 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:27:26,373 INFO L146 ILogger]: Start isEmpty. Operand 122 states and 127 transitions. [2019-05-23 11:27:26,374 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:27:26,375 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:26,375 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:26,375 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:26,375 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:26,375 INFO L146 ILogger]: Analyzing trace with hash 257790503, now seen corresponding path program 1 times [2019-05-23 11:27:26,376 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:26,376 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:26,376 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:26,377 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:26,377 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:26,398 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:26,679 INFO L146 ILogger]: Checked inductivity of 199 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:27:26,679 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:26,679 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 11:27:26,687 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:26,722 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:26,723 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:27:26,726 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:26,776 INFO L146 ILogger]: Checked inductivity of 199 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:27:26,795 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:26,795 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:27:26,795 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:27:26,796 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:27:26,796 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:27:26,796 INFO L146 ILogger]: Start difference. First operand 122 states and 127 transitions. Second operand 17 states. [2019-05-23 11:27:27,075 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:27,075 INFO L146 ILogger]: Finished difference Result 191 states and 201 transitions. [2019-05-23 11:27:27,076 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:27:27,076 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 113 [2019-05-23 11:27:27,077 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:27,078 INFO L146 ILogger]: With dead ends: 191 [2019-05-23 11:27:27,078 INFO L146 ILogger]: Without dead ends: 140 [2019-05-23 11:27:27,079 INFO L146 ILogger]: 0 DeclaredPredicates, 139 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:27:27,080 INFO L146 ILogger]: Start minimizeSevpa. Operand 140 states. [2019-05-23 11:27:27,085 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 140 to 132. [2019-05-23 11:27:27,086 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:27:27,086 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 137 transitions. [2019-05-23 11:27:27,087 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 137 transitions. Word has length 113 [2019-05-23 11:27:27,087 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:27,087 INFO L146 ILogger]: Abstraction has 132 states and 137 transitions. [2019-05-23 11:27:27,087 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:27:27,087 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 137 transitions. [2019-05-23 11:27:27,089 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:27:27,089 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:27,089 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:27,090 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:27,090 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:27,090 INFO L146 ILogger]: Analyzing trace with hash 1065114561, now seen corresponding path program 2 times [2019-05-23 11:27:27,090 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:27,090 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:27,091 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:27,091 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:27,091 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:27,110 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:27,398 INFO L146 ILogger]: Checked inductivity of 260 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:27:27,398 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:27,399 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 11:27:27,409 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:27,443 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:27,443 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:27,444 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:27:27,446 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:27,491 INFO L146 ILogger]: Checked inductivity of 260 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:27:27,510 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:27,510 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:27:27,510 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:27:27,511 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:27:27,511 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:27:27,511 INFO L146 ILogger]: Start difference. First operand 132 states and 137 transitions. Second operand 19 states. [2019-05-23 11:27:27,826 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:27,827 INFO L146 ILogger]: Finished difference Result 201 states and 211 transitions. [2019-05-23 11:27:27,827 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:27:27,827 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 123 [2019-05-23 11:27:27,828 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:27,829 INFO L146 ILogger]: With dead ends: 201 [2019-05-23 11:27:27,829 INFO L146 ILogger]: Without dead ends: 150 [2019-05-23 11:27:27,830 INFO L146 ILogger]: 0 DeclaredPredicates, 153 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:27:27,830 INFO L146 ILogger]: Start minimizeSevpa. Operand 150 states. [2019-05-23 11:27:27,835 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 150 to 142. [2019-05-23 11:27:27,835 INFO L146 ILogger]: Start removeUnreachable. Operand 142 states. [2019-05-23 11:27:27,836 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 142 states to 142 states and 147 transitions. [2019-05-23 11:27:27,836 INFO L146 ILogger]: Start accepts. Automaton has 142 states and 147 transitions. Word has length 123 [2019-05-23 11:27:27,836 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:27,837 INFO L146 ILogger]: Abstraction has 142 states and 147 transitions. [2019-05-23 11:27:27,837 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:27:27,837 INFO L146 ILogger]: Start isEmpty. Operand 142 states and 147 transitions. [2019-05-23 11:27:27,838 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:27:27,839 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:27,839 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:27,839 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:27,839 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:27,840 INFO L146 ILogger]: Analyzing trace with hash -2079888165, now seen corresponding path program 3 times [2019-05-23 11:27:27,840 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:27,840 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:27,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:27,841 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:27,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:27,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:28,078 INFO L146 ILogger]: Checked inductivity of 331 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:27:28,078 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:28,078 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 11:27:28,087 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:27:28,125 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:27:28,125 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:28,126 INFO L146 ILogger]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:27:28,128 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:28,214 INFO L146 ILogger]: Checked inductivity of 331 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2019-05-23 11:27:28,233 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:28,233 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 24 [2019-05-23 11:27:28,233 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:27:28,234 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:27:28,234 INFO L146 ILogger]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:27:28,234 INFO L146 ILogger]: Start difference. First operand 142 states and 147 transitions. Second operand 24 states. [2019-05-23 11:27:28,997 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:28,998 INFO L146 ILogger]: Finished difference Result 235 states and 248 transitions. [2019-05-23 11:27:28,998 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:27:28,998 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 133 [2019-05-23 11:27:28,999 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:29,000 INFO L146 ILogger]: With dead ends: 235 [2019-05-23 11:27:29,000 INFO L146 ILogger]: Without dead ends: 184 [2019-05-23 11:27:29,001 INFO L146 ILogger]: 0 DeclaredPredicates, 175 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=550, Invalid=1706, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:27:29,002 INFO L146 ILogger]: Start minimizeSevpa. Operand 184 states. [2019-05-23 11:27:29,006 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 184 to 160. [2019-05-23 11:27:29,006 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:27:29,007 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 166 transitions. [2019-05-23 11:27:29,007 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 166 transitions. Word has length 133 [2019-05-23 11:27:29,008 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:29,008 INFO L146 ILogger]: Abstraction has 160 states and 166 transitions. [2019-05-23 11:27:29,008 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:27:29,008 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 166 transitions. [2019-05-23 11:27:29,010 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 149 [2019-05-23 11:27:29,010 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:29,010 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:29,011 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:29,011 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:29,011 INFO L146 ILogger]: Analyzing trace with hash 556982662, now seen corresponding path program 4 times [2019-05-23 11:27:29,011 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:29,011 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:29,012 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:29,012 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:29,012 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:29,034 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:29,950 INFO L146 ILogger]: Checked inductivity of 433 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-05-23 11:27:29,950 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:29,950 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 11:27:29,960 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:27:29,989 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:27:29,989 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:29,990 INFO L146 ILogger]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:27:29,992 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:30,047 INFO L146 ILogger]: Checked inductivity of 433 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2019-05-23 11:27:30,067 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:27:30,067 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2019-05-23 11:27:30,068 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:27:30,068 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:27:30,068 INFO L146 ILogger]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:27:30,069 INFO L146 ILogger]: Start difference. First operand 160 states and 166 transitions. Second operand 24 states. [2019-05-23 11:27:30,842 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:30,842 INFO L146 ILogger]: Finished difference Result 276 states and 292 transitions. [2019-05-23 11:27:30,843 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:27:30,843 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 148 [2019-05-23 11:27:30,843 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:30,844 INFO L146 ILogger]: With dead ends: 276 [2019-05-23 11:27:30,845 INFO L146 ILogger]: Without dead ends: 217 [2019-05-23 11:27:30,846 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=515, Invalid=1377, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:27:30,846 INFO L146 ILogger]: Start minimizeSevpa. Operand 217 states. [2019-05-23 11:27:30,851 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 217 to 190. [2019-05-23 11:27:30,852 INFO L146 ILogger]: Start removeUnreachable. Operand 190 states. [2019-05-23 11:27:30,852 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 190 states to 190 states and 197 transitions. [2019-05-23 11:27:30,852 INFO L146 ILogger]: Start accepts. Automaton has 190 states and 197 transitions. Word has length 148 [2019-05-23 11:27:30,853 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:30,853 INFO L146 ILogger]: Abstraction has 190 states and 197 transitions. [2019-05-23 11:27:30,853 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:27:30,853 INFO L146 ILogger]: Start isEmpty. Operand 190 states and 197 transitions. [2019-05-23 11:27:30,855 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 162 [2019-05-23 11:27:30,855 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:30,855 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:30,855 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:30,855 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:30,856 INFO L146 ILogger]: Analyzing trace with hash -135921928, now seen corresponding path program 5 times [2019-05-23 11:27:30,856 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:30,856 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:30,857 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:30,857 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:30,857 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:30,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:31,294 INFO L146 ILogger]: Checked inductivity of 533 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:27:31,294 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:31,294 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 11:27:31,304 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:27:39,512 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:27:39,512 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:39,520 INFO L146 ILogger]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:27:39,523 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:39,938 INFO L146 ILogger]: Checked inductivity of 533 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2019-05-23 11:27:39,960 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:39,960 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 8] total 29 [2019-05-23 11:27:39,960 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:27:39,961 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:27:39,961 INFO L146 ILogger]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:27:39,961 INFO L146 ILogger]: Start difference. First operand 190 states and 197 transitions. Second operand 29 states. [2019-05-23 11:27:41,441 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:41,441 INFO L146 ILogger]: Finished difference Result 279 states and 293 transitions. [2019-05-23 11:27:41,441 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:27:41,442 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 161 [2019-05-23 11:27:41,442 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:41,443 INFO L146 ILogger]: With dead ends: 279 [2019-05-23 11:27:41,444 INFO L146 ILogger]: Without dead ends: 200 [2019-05-23 11:27:41,445 INFO L146 ILogger]: 0 DeclaredPredicates, 216 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1036, Invalid=2746, Unknown=0, NotChecked=0, Total=3782 [2019-05-23 11:27:41,446 INFO L146 ILogger]: Start minimizeSevpa. Operand 200 states. [2019-05-23 11:27:41,449 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 200 to 192. [2019-05-23 11:27:41,450 INFO L146 ILogger]: Start removeUnreachable. Operand 192 states. [2019-05-23 11:27:41,450 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 192 states to 192 states and 198 transitions. [2019-05-23 11:27:41,451 INFO L146 ILogger]: Start accepts. Automaton has 192 states and 198 transitions. Word has length 161 [2019-05-23 11:27:41,451 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:41,451 INFO L146 ILogger]: Abstraction has 192 states and 198 transitions. [2019-05-23 11:27:41,451 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:27:41,451 INFO L146 ILogger]: Start isEmpty. Operand 192 states and 198 transitions. [2019-05-23 11:27:41,453 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 172 [2019-05-23 11:27:41,453 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:41,453 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:41,453 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:41,453 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:41,454 INFO L146 ILogger]: Analyzing trace with hash 2029199456, now seen corresponding path program 6 times [2019-05-23 11:27:41,454 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:41,454 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:41,454 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:41,455 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:41,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:41,473 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:41,866 INFO L146 ILogger]: Checked inductivity of 634 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:27:41,866 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:41,867 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 11:27:41,876 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:27:42,025 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:27:42,025 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:42,027 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:27:42,030 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:42,170 INFO L146 ILogger]: Checked inductivity of 634 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2019-05-23 11:27:42,190 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:42,191 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2019-05-23 11:27:42,191 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:27:42,191 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:27:42,192 INFO L146 ILogger]: CoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:27:42,192 INFO L146 ILogger]: Start difference. First operand 192 states and 198 transitions. Second operand 31 states. [2019-05-23 11:27:44,120 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:44,121 INFO L146 ILogger]: Finished difference Result 295 states and 308 transitions. [2019-05-23 11:27:44,121 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:27:44,121 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 171 [2019-05-23 11:27:44,122 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:44,123 INFO L146 ILogger]: With dead ends: 295 [2019-05-23 11:27:44,123 INFO L146 ILogger]: Without dead ends: 224 [2019-05-23 11:27:44,125 INFO L146 ILogger]: 0 DeclaredPredicates, 237 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1416, Invalid=3840, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:27:44,126 INFO L146 ILogger]: Start minimizeSevpa. Operand 224 states. [2019-05-23 11:27:44,130 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 224 to 210. [2019-05-23 11:27:44,130 INFO L146 ILogger]: Start removeUnreachable. Operand 210 states. [2019-05-23 11:27:44,131 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 210 states to 210 states and 216 transitions. [2019-05-23 11:27:44,131 INFO L146 ILogger]: Start accepts. Automaton has 210 states and 216 transitions. Word has length 171 [2019-05-23 11:27:44,132 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:44,132 INFO L146 ILogger]: Abstraction has 210 states and 216 transitions. [2019-05-23 11:27:44,132 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:27:44,132 INFO L146 ILogger]: Start isEmpty. Operand 210 states and 216 transitions. [2019-05-23 11:27:44,133 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:27:44,133 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:44,133 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:44,134 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:44,134 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:44,134 INFO L146 ILogger]: Analyzing trace with hash -432517014, now seen corresponding path program 4 times [2019-05-23 11:27:44,134 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:44,134 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:44,135 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:44,135 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:44,135 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:44,153 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:44,632 INFO L146 ILogger]: Checked inductivity of 757 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:27:44,632 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:44,632 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 11:27:44,640 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:27:44,870 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:27:44,870 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:44,872 INFO L146 ILogger]: Trace formula consists of 275 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:27:44,875 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:44,945 INFO L146 ILogger]: Checked inductivity of 757 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:27:44,967 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:44,967 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:27:44,967 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:27:44,968 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:27:44,968 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:27:44,968 INFO L146 ILogger]: Start difference. First operand 210 states and 216 transitions. Second operand 29 states. [2019-05-23 11:27:45,578 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:45,578 INFO L146 ILogger]: Finished difference Result 307 states and 319 transitions. [2019-05-23 11:27:45,579 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:27:45,579 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 184 [2019-05-23 11:27:45,579 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:45,580 INFO L146 ILogger]: With dead ends: 307 [2019-05-23 11:27:45,580 INFO L146 ILogger]: Without dead ends: 228 [2019-05-23 11:27:45,581 INFO L146 ILogger]: 0 DeclaredPredicates, 234 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:27:45,582 INFO L146 ILogger]: Start minimizeSevpa. Operand 228 states. [2019-05-23 11:27:45,586 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 228 to 220. [2019-05-23 11:27:45,586 INFO L146 ILogger]: Start removeUnreachable. Operand 220 states. [2019-05-23 11:27:45,587 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 220 states to 220 states and 226 transitions. [2019-05-23 11:27:45,587 INFO L146 ILogger]: Start accepts. Automaton has 220 states and 226 transitions. Word has length 184 [2019-05-23 11:27:45,587 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:45,588 INFO L146 ILogger]: Abstraction has 220 states and 226 transitions. [2019-05-23 11:27:45,588 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:27:45,588 INFO L146 ILogger]: Start isEmpty. Operand 220 states and 226 transitions. [2019-05-23 11:27:45,589 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:27:45,589 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:45,589 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:45,590 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:45,590 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:45,590 INFO L146 ILogger]: Analyzing trace with hash -246532720, now seen corresponding path program 5 times [2019-05-23 11:27:45,590 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:45,590 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:45,591 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:45,591 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:45,591 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:45,609 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:46,126 INFO L146 ILogger]: Checked inductivity of 878 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:27:46,126 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:46,126 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 11:27:46,135 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:28:00,887 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2019-05-23 11:28:00,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:00,898 INFO L146 ILogger]: Trace formula consists of 289 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:28:00,901 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:00,975 INFO L146 ILogger]: Checked inductivity of 878 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:28:01,009 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:01,010 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:28:01,010 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:28:01,010 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:28:01,011 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:28:01,011 INFO L146 ILogger]: Start difference. First operand 220 states and 226 transitions. Second operand 31 states. [2019-05-23 11:28:02,038 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:02,039 INFO L146 ILogger]: Finished difference Result 317 states and 329 transitions. [2019-05-23 11:28:02,039 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:28:02,039 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 194 [2019-05-23 11:28:02,040 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:02,041 INFO L146 ILogger]: With dead ends: 317 [2019-05-23 11:28:02,041 INFO L146 ILogger]: Without dead ends: 238 [2019-05-23 11:28:02,042 INFO L146 ILogger]: 0 DeclaredPredicates, 248 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:28:02,043 INFO L146 ILogger]: Start minimizeSevpa. Operand 238 states. [2019-05-23 11:28:02,046 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 238 to 230. [2019-05-23 11:28:02,047 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:28:02,047 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 236 transitions. [2019-05-23 11:28:02,048 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 236 transitions. Word has length 194 [2019-05-23 11:28:02,048 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:02,048 INFO L146 ILogger]: Abstraction has 230 states and 236 transitions. [2019-05-23 11:28:02,048 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:28:02,048 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 236 transitions. [2019-05-23 11:28:02,049 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 205 [2019-05-23 11:28:02,050 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:02,050 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:02,050 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:02,050 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:02,050 INFO L146 ILogger]: Analyzing trace with hash -1812176074, now seen corresponding path program 6 times [2019-05-23 11:28:02,051 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:02,051 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:02,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:02,052 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:02,052 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:02,068 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:02,463 INFO L146 ILogger]: Checked inductivity of 1009 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:28:02,463 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:02,463 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 11:28:02,471 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:28:05,283 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:28:05,283 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:05,288 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:28:05,290 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:05,540 INFO L146 ILogger]: Checked inductivity of 1009 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2019-05-23 11:28:05,560 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:05,560 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 13] total 37 [2019-05-23 11:28:05,561 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:28:05,561 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:28:05,562 INFO L146 ILogger]: CoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:28:05,562 INFO L146 ILogger]: Start difference. First operand 230 states and 236 transitions. Second operand 37 states. [2019-05-23 11:28:07,358 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:07,359 INFO L146 ILogger]: Finished difference Result 371 states and 386 transitions. [2019-05-23 11:28:07,359 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:28:07,359 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 204 [2019-05-23 11:28:07,360 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:07,361 INFO L146 ILogger]: With dead ends: 371 [2019-05-23 11:28:07,361 INFO L146 ILogger]: Without dead ends: 292 [2019-05-23 11:28:07,363 INFO L146 ILogger]: 0 DeclaredPredicates, 272 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1382, Invalid=4168, Unknown=0, NotChecked=0, Total=5550 [2019-05-23 11:28:07,364 INFO L146 ILogger]: Start minimizeSevpa. Operand 292 states. [2019-05-23 11:28:07,368 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 292 to 248. [2019-05-23 11:28:07,369 INFO L146 ILogger]: Start removeUnreachable. Operand 248 states. [2019-05-23 11:28:07,369 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 248 states to 248 states and 255 transitions. [2019-05-23 11:28:07,370 INFO L146 ILogger]: Start accepts. Automaton has 248 states and 255 transitions. Word has length 204 [2019-05-23 11:28:07,370 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:07,370 INFO L146 ILogger]: Abstraction has 248 states and 255 transitions. [2019-05-23 11:28:07,370 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:28:07,370 INFO L146 ILogger]: Start isEmpty. Operand 248 states and 255 transitions. [2019-05-23 11:28:07,371 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 220 [2019-05-23 11:28:07,371 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:07,372 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:07,372 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:07,372 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:07,372 INFO L146 ILogger]: Analyzing trace with hash 1383707185, now seen corresponding path program 7 times [2019-05-23 11:28:07,373 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:07,373 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:07,373 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:07,374 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:07,374 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:07,392 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:07,818 INFO L146 ILogger]: Checked inductivity of 1176 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:28:07,818 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:07,818 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 11:28:07,828 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:07,879 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:07,880 INFO L146 ILogger]: Trace formula consists of 325 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:28:07,882 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:07,980 INFO L146 ILogger]: Checked inductivity of 1176 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:28:07,999 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:07,999 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:28:08,000 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:28:08,000 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:28:08,000 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:28:08,000 INFO L146 ILogger]: Start difference. First operand 248 states and 255 transitions. Second operand 35 states. [2019-05-23 11:28:08,814 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:08,815 INFO L146 ILogger]: Finished difference Result 353 states and 367 transitions. [2019-05-23 11:28:08,815 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:28:08,815 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 219 [2019-05-23 11:28:08,816 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:08,817 INFO L146 ILogger]: With dead ends: 353 [2019-05-23 11:28:08,817 INFO L146 ILogger]: Without dead ends: 266 [2019-05-23 11:28:08,818 INFO L146 ILogger]: 0 DeclaredPredicates, 281 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:28:08,818 INFO L146 ILogger]: Start minimizeSevpa. Operand 266 states. [2019-05-23 11:28:08,823 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 266 to 258. [2019-05-23 11:28:08,823 INFO L146 ILogger]: Start removeUnreachable. Operand 258 states. [2019-05-23 11:28:08,824 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 258 states to 258 states and 265 transitions. [2019-05-23 11:28:08,824 INFO L146 ILogger]: Start accepts. Automaton has 258 states and 265 transitions. Word has length 219 [2019-05-23 11:28:08,825 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:08,825 INFO L146 ILogger]: Abstraction has 258 states and 265 transitions. [2019-05-23 11:28:08,825 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:28:08,825 INFO L146 ILogger]: Start isEmpty. Operand 258 states and 265 transitions. [2019-05-23 11:28:08,826 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:28:08,827 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:08,827 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:08,827 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:08,827 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:08,828 INFO L146 ILogger]: Analyzing trace with hash -703329461, now seen corresponding path program 8 times [2019-05-23 11:28:08,828 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:08,828 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:08,829 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:08,829 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:08,829 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:08,849 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:09,414 INFO L146 ILogger]: Checked inductivity of 1327 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:28:09,414 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:09,414 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 11:28:09,423 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:28:09,474 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:28:09,474 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:09,476 INFO L146 ILogger]: Trace formula consists of 339 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:28:09,478 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:09,547 INFO L146 ILogger]: Checked inductivity of 1327 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:28:09,566 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:09,566 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-05-23 11:28:09,566 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:28:09,567 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:28:09,567 INFO L146 ILogger]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:28:09,567 INFO L146 ILogger]: Start difference. First operand 258 states and 265 transitions. Second operand 37 states. [2019-05-23 11:28:10,473 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:10,474 INFO L146 ILogger]: Finished difference Result 363 states and 377 transitions. [2019-05-23 11:28:10,474 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:28:10,474 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 229 [2019-05-23 11:28:10,475 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:10,476 INFO L146 ILogger]: With dead ends: 363 [2019-05-23 11:28:10,476 INFO L146 ILogger]: Without dead ends: 276 [2019-05-23 11:28:10,477 INFO L146 ILogger]: 0 DeclaredPredicates, 295 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:28:10,477 INFO L146 ILogger]: Start minimizeSevpa. Operand 276 states. [2019-05-23 11:28:10,482 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 276 to 268. [2019-05-23 11:28:10,482 INFO L146 ILogger]: Start removeUnreachable. Operand 268 states. [2019-05-23 11:28:10,483 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 268 states to 268 states and 275 transitions. [2019-05-23 11:28:10,483 INFO L146 ILogger]: Start accepts. Automaton has 268 states and 275 transitions. Word has length 229 [2019-05-23 11:28:10,484 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:10,484 INFO L146 ILogger]: Abstraction has 268 states and 275 transitions. [2019-05-23 11:28:10,484 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:28:10,484 INFO L146 ILogger]: Start isEmpty. Operand 268 states and 275 transitions. [2019-05-23 11:28:10,485 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 240 [2019-05-23 11:28:10,485 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:10,486 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:10,486 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:10,486 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:10,486 INFO L146 ILogger]: Analyzing trace with hash -1030927387, now seen corresponding path program 9 times [2019-05-23 11:28:10,487 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:10,487 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:10,487 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:10,488 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:10,488 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:10,509 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:11,689 INFO L146 ILogger]: Checked inductivity of 1488 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:28:11,689 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:11,689 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 11:28:11,706 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:28:11,781 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:28:11,782 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:11,783 INFO L146 ILogger]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:28:11,786 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:12,902 INFO L146 ILogger]: Checked inductivity of 1488 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2019-05-23 11:28:12,922 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:12,922 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 10] total 45 [2019-05-23 11:28:12,925 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:28:12,925 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:28:12,926 INFO L146 ILogger]: CoverageRelationStatistics Valid=457, Invalid=1523, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:28:12,926 INFO L146 ILogger]: Start difference. First operand 268 states and 275 transitions. Second operand 45 states. [2019-05-23 11:28:14,949 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:14,949 INFO L146 ILogger]: Finished difference Result 387 states and 402 transitions. [2019-05-23 11:28:14,950 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:28:14,950 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 239 [2019-05-23 11:28:14,951 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:14,953 INFO L146 ILogger]: With dead ends: 387 [2019-05-23 11:28:14,953 INFO L146 ILogger]: Without dead ends: 300 [2019-05-23 11:28:14,957 INFO L146 ILogger]: 0 DeclaredPredicates, 338 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2635 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3025, Invalid=8531, Unknown=0, NotChecked=0, Total=11556 [2019-05-23 11:28:14,957 INFO L146 ILogger]: Start minimizeSevpa. Operand 300 states. [2019-05-23 11:28:14,962 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 300 to 286. [2019-05-23 11:28:14,963 INFO L146 ILogger]: Start removeUnreachable. Operand 286 states. [2019-05-23 11:28:14,963 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 286 states to 286 states and 293 transitions. [2019-05-23 11:28:14,964 INFO L146 ILogger]: Start accepts. Automaton has 286 states and 293 transitions. Word has length 239 [2019-05-23 11:28:14,964 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:14,964 INFO L146 ILogger]: Abstraction has 286 states and 293 transitions. [2019-05-23 11:28:14,964 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:28:14,964 INFO L146 ILogger]: Start isEmpty. Operand 286 states and 293 transitions. [2019-05-23 11:28:14,966 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 253 [2019-05-23 11:28:14,966 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:14,966 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:14,966 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:14,966 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:14,967 INFO L146 ILogger]: Analyzing trace with hash 1990908215, now seen corresponding path program 7 times [2019-05-23 11:28:14,967 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:14,967 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:14,968 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:14,968 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:14,968 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:14,989 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:15,750 INFO L146 ILogger]: Checked inductivity of 1674 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:28:15,750 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:15,751 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:28:15,761 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:15,814 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:15,816 INFO L146 ILogger]: Trace formula consists of 370 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:28:15,819 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:15,905 INFO L146 ILogger]: Checked inductivity of 1674 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:28:15,924 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:15,924 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:28:15,925 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:28:15,925 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:28:15,926 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:28:15,926 INFO L146 ILogger]: Start difference. First operand 286 states and 293 transitions. Second operand 41 states. [2019-05-23 11:28:18,604 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:18,604 INFO L146 ILogger]: Finished difference Result 399 states and 413 transitions. [2019-05-23 11:28:18,604 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:28:18,605 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 252 [2019-05-23 11:28:18,605 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:18,606 INFO L146 ILogger]: With dead ends: 399 [2019-05-23 11:28:18,606 INFO L146 ILogger]: Without dead ends: 304 [2019-05-23 11:28:18,607 INFO L146 ILogger]: 0 DeclaredPredicates, 326 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:28:18,607 INFO L146 ILogger]: Start minimizeSevpa. Operand 304 states. [2019-05-23 11:28:18,611 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 304 to 296. [2019-05-23 11:28:18,612 INFO L146 ILogger]: Start removeUnreachable. Operand 296 states. [2019-05-23 11:28:18,612 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 296 states to 296 states and 303 transitions. [2019-05-23 11:28:18,613 INFO L146 ILogger]: Start accepts. Automaton has 296 states and 303 transitions. Word has length 252 [2019-05-23 11:28:18,613 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:18,613 INFO L146 ILogger]: Abstraction has 296 states and 303 transitions. [2019-05-23 11:28:18,613 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:28:18,613 INFO L146 ILogger]: Start isEmpty. Operand 296 states and 303 transitions. [2019-05-23 11:28:18,614 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 263 [2019-05-23 11:28:18,615 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:18,615 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:18,615 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:18,615 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:18,615 INFO L146 ILogger]: Analyzing trace with hash -1900442787, now seen corresponding path program 8 times [2019-05-23 11:28:18,616 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:18,616 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:18,616 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:18,616 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:18,617 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:18,638 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:19,566 INFO L146 ILogger]: Checked inductivity of 1855 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:28:19,566 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:19,566 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:28:19,576 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:28:19,631 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:28:19,632 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:19,633 INFO L146 ILogger]: Trace formula consists of 384 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:28:19,636 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:19,736 INFO L146 ILogger]: Checked inductivity of 1855 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:28:19,755 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:19,755 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-05-23 11:28:19,755 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:28:19,756 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:28:19,756 INFO L146 ILogger]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:28:19,756 INFO L146 ILogger]: Start difference. First operand 296 states and 303 transitions. Second operand 43 states. [2019-05-23 11:28:20,891 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:20,891 INFO L146 ILogger]: Finished difference Result 409 states and 423 transitions. [2019-05-23 11:28:20,893 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:28:20,893 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 262 [2019-05-23 11:28:20,894 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:20,895 INFO L146 ILogger]: With dead ends: 409 [2019-05-23 11:28:20,895 INFO L146 ILogger]: Without dead ends: 314 [2019-05-23 11:28:20,896 INFO L146 ILogger]: 0 DeclaredPredicates, 340 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:28:20,897 INFO L146 ILogger]: Start minimizeSevpa. Operand 314 states. [2019-05-23 11:28:20,901 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 314 to 306. [2019-05-23 11:28:20,901 INFO L146 ILogger]: Start removeUnreachable. Operand 306 states. [2019-05-23 11:28:20,902 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 306 states to 306 states and 313 transitions. [2019-05-23 11:28:20,902 INFO L146 ILogger]: Start accepts. Automaton has 306 states and 313 transitions. Word has length 262 [2019-05-23 11:28:20,902 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:20,902 INFO L146 ILogger]: Abstraction has 306 states and 313 transitions. [2019-05-23 11:28:20,902 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:28:20,903 INFO L146 ILogger]: Start isEmpty. Operand 306 states and 313 transitions. [2019-05-23 11:28:20,904 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 273 [2019-05-23 11:28:20,904 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:20,904 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:20,905 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:20,905 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:20,905 INFO L146 ILogger]: Analyzing trace with hash -1954265597, now seen corresponding path program 9 times [2019-05-23 11:28:20,905 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:20,905 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:20,906 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:20,906 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:20,906 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:20,927 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:22,390 INFO L146 ILogger]: Checked inductivity of 2046 backedges. 0 proven. 1920 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:28:22,390 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:22,390 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:28:22,399 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:28:22,745 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:28:22,745 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:22,747 INFO L146 ILogger]: Trace formula consists of 202 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:28:22,749 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:23,066 INFO L146 ILogger]: Checked inductivity of 2046 backedges. 191 proven. 126 refuted. 0 times theorem prover too weak. 1729 trivial. 0 not checked. [2019-05-23 11:28:23,085 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:23,086 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 18] total 53 [2019-05-23 11:28:23,086 INFO L146 ILogger]: Interpolant automaton has 53 states [2019-05-23 11:28:23,086 INFO L146 ILogger]: Constructing interpolant automaton starting with 53 interpolants. [2019-05-23 11:28:23,087 INFO L146 ILogger]: CoverageRelationStatistics Valid=604, Invalid=2152, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:28:23,087 INFO L146 ILogger]: Start difference. First operand 306 states and 313 transitions. Second operand 53 states. [2019-05-23 11:28:24,952 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:24,952 INFO L146 ILogger]: Finished difference Result 489 states and 506 transitions. [2019-05-23 11:28:24,952 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2019-05-23 11:28:24,953 INFO L146 ILogger]: Start accepts. Automaton has 53 states. Word has length 272 [2019-05-23 11:28:24,953 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:24,955 INFO L146 ILogger]: With dead ends: 489 [2019-05-23 11:28:24,955 INFO L146 ILogger]: Without dead ends: 394 [2019-05-23 11:28:24,957 INFO L146 ILogger]: 0 DeclaredPredicates, 369 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2956, Invalid=8600, Unknown=0, NotChecked=0, Total=11556 [2019-05-23 11:28:24,958 INFO L146 ILogger]: Start minimizeSevpa. Operand 394 states. [2019-05-23 11:28:24,964 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 394 to 324. [2019-05-23 11:28:24,964 INFO L146 ILogger]: Start removeUnreachable. Operand 324 states. [2019-05-23 11:28:24,965 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 324 states to 324 states and 332 transitions. [2019-05-23 11:28:24,965 INFO L146 ILogger]: Start accepts. Automaton has 324 states and 332 transitions. Word has length 272 [2019-05-23 11:28:24,965 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:24,965 INFO L146 ILogger]: Abstraction has 324 states and 332 transitions. [2019-05-23 11:28:24,965 INFO L146 ILogger]: Interpolant automaton has 53 states. [2019-05-23 11:28:24,966 INFO L146 ILogger]: Start isEmpty. Operand 324 states and 332 transitions. [2019-05-23 11:28:24,967 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 288 [2019-05-23 11:28:24,967 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:24,968 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:24,968 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:24,968 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:24,968 INFO L146 ILogger]: Analyzing trace with hash -536062794, now seen corresponding path program 10 times [2019-05-23 11:28:24,968 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:24,969 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:24,969 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:24,969 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:24,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:24,994 INFO L146 ILogger]: Conjunction of SSA is unsat