java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_partition_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:30,421 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:30,423 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:30,439 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:30,440 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:30,442 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:30,443 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:30,445 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:30,448 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:30,449 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:30,451 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:30,451 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:30,452 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:30,454 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:30,455 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:30,464 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:30,464 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:30,469 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:30,473 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:30,475 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:30,477 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:30,478 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:30,481 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-05-23 11:15:30,494 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:30,494 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:30,495 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:30,495 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:30,497 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:30,498 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:30,499 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:30,524 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:30,526 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:30,527 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:30,528 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:30,528 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:30,528 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:30,528 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:30,529 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:30,529 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:30,529 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:30,529 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:30,529 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:30,530 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:30,531 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:30,531 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:30,531 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:30,531 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:30,532 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:30,532 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:30,532 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:30,532 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:30,532 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:30,532 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:30,533 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:30,533 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:30,533 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:30,534 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:30,534 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:30,534 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 11:15:30,582 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:30,594 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:30,599 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:30,600 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:30,601 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:30,601 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_partition_false-unreach-call_ground.i [2019-05-23 11:15:30,667 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffeae958/c02b3fa85b79417bb4c64c642bad8608/FLAG1a751a25f [2019-05-23 11:15:31,118 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:31,120 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_partition_false-unreach-call_ground.i [2019-05-23 11:15:31,126 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffeae958/c02b3fa85b79417bb4c64c642bad8608/FLAG1a751a25f [2019-05-23 11:15:31,470 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffeae958/c02b3fa85b79417bb4c64c642bad8608 [2019-05-23 11:15:31,479 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:31,480 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:31,482 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:31,482 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:31,485 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:31,486 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,489 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7e4e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31, skipping insertion in model container [2019-05-23 11:15:31,490 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,497 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:31,515 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:31,723 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:31,730 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:31,759 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:31,777 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:31,778 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31 WrapperNode [2019-05-23 11:15:31,778 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:31,779 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:31,779 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:31,779 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:31,787 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,796 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,819 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:31,820 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:31,820 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:31,820 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:31,830 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,830 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,832 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,833 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,839 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,845 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,847 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,850 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:31,850 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:31,850 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:31,851 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:31,852 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (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 11:15:32,008 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:15:32,008 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:32,008 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:32,008 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:32,008 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:32,008 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:32,519 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:32,519 INFO L146 ILogger]: Removed 12 assume(true) statements. [2019-05-23 11:15:32,520 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:32 BoogieIcfgContainer [2019-05-23 11:15:32,521 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:32,521 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:32,522 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:32,525 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:32,525 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:31" (1/3) ... [2019-05-23 11:15:32,526 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31dedad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:32, skipping insertion in model container [2019-05-23 11:15:32,526 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (2/3) ... [2019-05-23 11:15:32,527 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31dedad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:32, skipping insertion in model container [2019-05-23 11:15:32,527 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:32" (3/3) ... [2019-05-23 11:15:32,529 INFO L146 ILogger]: Analyzing ICFG standard_partition_false-unreach-call_ground.i [2019-05-23 11:15:32,539 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:32,548 INFO L146 ILogger]: Appying trace abstraction to program that has 2 error locations. [2019-05-23 11:15:32,565 INFO L146 ILogger]: Starting to check reachability of 2 error locations. [2019-05-23 11:15:32,597 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:32,598 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:32,598 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:32,599 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:32,599 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:32,599 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:32,599 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:32,600 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:32,600 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:32,617 INFO L146 ILogger]: Start isEmpty. Operand 71 states. [2019-05-23 11:15:32,624 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:15:32,625 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,626 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] [2019-05-23 11:15:32,628 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,633 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,634 INFO L146 ILogger]: Analyzing trace with hash -1442409077, now seen corresponding path program 1 times [2019-05-23 11:15:32,636 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,636 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,682 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,682 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,682 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,719 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,761 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 11:15:32,764 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:32,764 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:15:32,768 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:15:32,781 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:15:32,782 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:32,785 INFO L146 ILogger]: Start difference. First operand 71 states. Second operand 2 states. [2019-05-23 11:15:32,807 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,808 INFO L146 ILogger]: Finished difference Result 119 states and 138 transitions. [2019-05-23 11:15:32,808 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:15:32,809 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 22 [2019-05-23 11:15:32,810 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,820 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:15:32,820 INFO L146 ILogger]: Without dead ends: 61 [2019-05-23 11:15:32,823 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 11:15:32,839 INFO L146 ILogger]: Start minimizeSevpa. Operand 61 states. [2019-05-23 11:15:32,855 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-05-23 11:15:32,856 INFO L146 ILogger]: Start removeUnreachable. Operand 61 states. [2019-05-23 11:15:32,858 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2019-05-23 11:15:32,859 INFO L146 ILogger]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 22 [2019-05-23 11:15:32,860 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,860 INFO L146 ILogger]: Abstraction has 61 states and 66 transitions. [2019-05-23 11:15:32,860 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:15:32,860 INFO L146 ILogger]: Start isEmpty. Operand 61 states and 66 transitions. [2019-05-23 11:15:32,861 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:15:32,861 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,862 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] [2019-05-23 11:15:32,862 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,862 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,863 INFO L146 ILogger]: Analyzing trace with hash 2094834013, now seen corresponding path program 1 times [2019-05-23 11:15:32,863 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,863 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,864 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,882 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,960 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 11:15:32,960 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:32,960 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:32,962 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:32,962 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:32,962 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:32,963 INFO L146 ILogger]: Start difference. First operand 61 states and 66 transitions. Second operand 3 states. [2019-05-23 11:15:33,131 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,132 INFO L146 ILogger]: Finished difference Result 122 states and 134 transitions. [2019-05-23 11:15:33,132 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:33,132 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 22 [2019-05-23 11:15:33,133 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,134 INFO L146 ILogger]: With dead ends: 122 [2019-05-23 11:15:33,134 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:15:33,136 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 11:15:33,137 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:15:33,144 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 63. [2019-05-23 11:15:33,144 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:15:33,145 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2019-05-23 11:15:33,146 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 22 [2019-05-23 11:15:33,146 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,146 INFO L146 ILogger]: Abstraction has 63 states and 68 transitions. [2019-05-23 11:15:33,146 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:33,146 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 68 transitions. [2019-05-23 11:15:33,148 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:15:33,148 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,148 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] [2019-05-23 11:15:33,148 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,149 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,149 INFO L146 ILogger]: Analyzing trace with hash 1416246834, now seen corresponding path program 1 times [2019-05-23 11:15:33,149 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,149 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,150 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,151 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:33,151 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,179 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,270 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 11:15:33,271 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:33,271 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 11:15:33,290 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:33,346 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,348 INFO L146 ILogger]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:33,357 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:33,509 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 11:15:33,559 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:33,559 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:15:33,560 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:15:33,561 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:15:33,561 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:33,561 INFO L146 ILogger]: Start difference. First operand 63 states and 68 transitions. Second operand 5 states. [2019-05-23 11:15:33,867 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,868 INFO L146 ILogger]: Finished difference Result 146 states and 160 transitions. [2019-05-23 11:15:33,871 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:15:33,871 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 35 [2019-05-23 11:15:33,872 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,873 INFO L146 ILogger]: With dead ends: 146 [2019-05-23 11:15:33,873 INFO L146 ILogger]: Without dead ends: 107 [2019-05-23 11:15:33,874 INFO L146 ILogger]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:33,874 INFO L146 ILogger]: Start minimizeSevpa. Operand 107 states. [2019-05-23 11:15:33,886 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 107 to 86. [2019-05-23 11:15:33,886 INFO L146 ILogger]: Start removeUnreachable. Operand 86 states. [2019-05-23 11:15:33,891 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2019-05-23 11:15:33,891 INFO L146 ILogger]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 35 [2019-05-23 11:15:33,892 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,892 INFO L146 ILogger]: Abstraction has 86 states and 93 transitions. [2019-05-23 11:15:33,892 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:15:33,892 INFO L146 ILogger]: Start isEmpty. Operand 86 states and 93 transitions. [2019-05-23 11:15:33,896 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 49 [2019-05-23 11:15:33,896 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,897 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:33,897 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,897 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,898 INFO L146 ILogger]: Analyzing trace with hash 260578585, now seen corresponding path program 2 times [2019-05-23 11:15:33,898 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,898 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,899 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,899 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:33,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,938 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,050 INFO L146 ILogger]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:15:34,050 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:34,050 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 11:15:34,068 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:34,094 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-05-23 11:15:34,094 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,095 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:34,098 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:34,154 INFO L146 ILogger]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:15:34,181 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:15:34,181 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-05-23 11:15:34,182 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:34,182 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:34,182 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:34,182 INFO L146 ILogger]: Start difference. First operand 86 states and 93 transitions. Second operand 7 states. [2019-05-23 11:15:35,194 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,195 INFO L146 ILogger]: Finished difference Result 287 states and 316 transitions. [2019-05-23 11:15:35,195 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:15:35,195 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 48 [2019-05-23 11:15:35,196 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,199 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:15:35,199 INFO L146 ILogger]: Without dead ends: 238 [2019-05-23 11:15:35,201 INFO L146 ILogger]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:35,207 INFO L146 ILogger]: Start minimizeSevpa. Operand 238 states. [2019-05-23 11:15:35,235 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 238 to 162. [2019-05-23 11:15:35,236 INFO L146 ILogger]: Start removeUnreachable. Operand 162 states. [2019-05-23 11:15:35,238 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2019-05-23 11:15:35,242 INFO L146 ILogger]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 48 [2019-05-23 11:15:35,242 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,242 INFO L146 ILogger]: Abstraction has 162 states and 178 transitions. [2019-05-23 11:15:35,242 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:35,243 INFO L146 ILogger]: Start isEmpty. Operand 162 states and 178 transitions. [2019-05-23 11:15:35,247 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:15:35,247 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,247 INFO L146 ILogger]: trace histogram [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 11:15:35,247 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,251 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,251 INFO L146 ILogger]: Analyzing trace with hash -785542020, now seen corresponding path program 1 times [2019-05-23 11:15:35,252 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,252 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,254 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,254 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:35,254 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,293 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,527 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:15:35,527 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,527 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 11:15:35,546 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:35,591 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,592 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:15:35,595 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:35,612 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:15:35,632 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:35,633 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:15:35,633 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:35,633 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:35,634 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:35,634 INFO L146 ILogger]: Start difference. First operand 162 states and 178 transitions. Second operand 7 states. [2019-05-23 11:15:35,905 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,906 INFO L146 ILogger]: Finished difference Result 334 states and 371 transitions. [2019-05-23 11:15:35,907 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:35,907 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 63 [2019-05-23 11:15:35,907 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,909 INFO L146 ILogger]: With dead ends: 334 [2019-05-23 11:15:35,909 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:15:35,910 INFO L146 ILogger]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:35,911 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:15:35,922 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 203. [2019-05-23 11:15:35,922 INFO L146 ILogger]: Start removeUnreachable. Operand 203 states. [2019-05-23 11:15:35,924 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 203 states to 203 states and 223 transitions. [2019-05-23 11:15:35,924 INFO L146 ILogger]: Start accepts. Automaton has 203 states and 223 transitions. Word has length 63 [2019-05-23 11:15:35,924 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,924 INFO L146 ILogger]: Abstraction has 203 states and 223 transitions. [2019-05-23 11:15:35,925 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:35,925 INFO L146 ILogger]: Start isEmpty. Operand 203 states and 223 transitions. [2019-05-23 11:15:35,927 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:15:35,927 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,927 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:35,927 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,928 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,928 INFO L146 ILogger]: Analyzing trace with hash 1950068251, now seen corresponding path program 2 times [2019-05-23 11:15:35,928 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,928 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,929 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,929 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:35,929 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,973 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,234 INFO L146 ILogger]: Checked inductivity of 86 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:15:36,235 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:36,235 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 11:15:36,243 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:36,267 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-05-23 11:15:36,267 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,268 INFO L146 ILogger]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:36,270 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:36,338 INFO L146 ILogger]: Checked inductivity of 86 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-05-23 11:15:36,356 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:15:36,357 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2019-05-23 11:15:36,357 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:15:36,358 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:15:36,358 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:36,358 INFO L146 ILogger]: Start difference. First operand 203 states and 223 transitions. Second operand 9 states. [2019-05-23 11:15:36,811 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:36,811 INFO L146 ILogger]: Finished difference Result 528 states and 587 transitions. [2019-05-23 11:15:36,812 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:15:36,812 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 76 [2019-05-23 11:15:36,812 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:36,814 INFO L146 ILogger]: With dead ends: 528 [2019-05-23 11:15:36,815 INFO L146 ILogger]: Without dead ends: 408 [2019-05-23 11:15:36,816 INFO L146 ILogger]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:15:36,819 INFO L146 ILogger]: Start minimizeSevpa. Operand 408 states. [2019-05-23 11:15:36,833 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 408 to 297. [2019-05-23 11:15:36,834 INFO L146 ILogger]: Start removeUnreachable. Operand 297 states. [2019-05-23 11:15:36,835 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 297 states to 297 states and 331 transitions. [2019-05-23 11:15:36,835 INFO L146 ILogger]: Start accepts. Automaton has 297 states and 331 transitions. Word has length 76 [2019-05-23 11:15:36,836 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:36,836 INFO L146 ILogger]: Abstraction has 297 states and 331 transitions. [2019-05-23 11:15:36,836 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:15:36,836 INFO L146 ILogger]: Start isEmpty. Operand 297 states and 331 transitions. [2019-05-23 11:15:36,838 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:15:36,839 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:36,839 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:36,839 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:36,839 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:36,839 INFO L146 ILogger]: Analyzing trace with hash -34181284, now seen corresponding path program 1 times [2019-05-23 11:15:36,840 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:36,840 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:36,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,841 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:36,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,865 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,971 INFO L146 ILogger]: Checked inductivity of 136 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:15:36,971 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:36,971 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 11:15:36,981 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:37,022 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,023 INFO L146 ILogger]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:15:37,027 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:37,141 INFO L146 ILogger]: Checked inductivity of 136 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:15:37,189 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:37,189 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:15:37,190 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:15:37,190 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:15:37,190 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:37,191 INFO L146 ILogger]: Start difference. First operand 297 states and 331 transitions. Second operand 9 states. [2019-05-23 11:15:37,687 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:37,687 INFO L146 ILogger]: Finished difference Result 583 states and 657 transitions. [2019-05-23 11:15:37,688 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:15:37,688 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 91 [2019-05-23 11:15:37,688 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:37,690 INFO L146 ILogger]: With dead ends: 583 [2019-05-23 11:15:37,690 INFO L146 ILogger]: Without dead ends: 396 [2019-05-23 11:15:37,692 INFO L146 ILogger]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:37,692 INFO L146 ILogger]: Start minimizeSevpa. Operand 396 states. [2019-05-23 11:15:37,704 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 396 to 348. [2019-05-23 11:15:37,704 INFO L146 ILogger]: Start removeUnreachable. Operand 348 states. [2019-05-23 11:15:37,706 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 348 states to 348 states and 388 transitions. [2019-05-23 11:15:37,706 INFO L146 ILogger]: Start accepts. Automaton has 348 states and 388 transitions. Word has length 91 [2019-05-23 11:15:37,706 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:37,706 INFO L146 ILogger]: Abstraction has 348 states and 388 transitions. [2019-05-23 11:15:37,707 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:15:37,707 INFO L146 ILogger]: Start isEmpty. Operand 348 states and 388 transitions. [2019-05-23 11:15:37,710 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 105 [2019-05-23 11:15:37,710 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:37,710 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:37,710 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:37,711 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:37,711 INFO L146 ILogger]: Analyzing trace with hash 1080323119, now seen corresponding path program 2 times [2019-05-23 11:15:37,711 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:37,711 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:37,712 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,712 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:37,712 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,735 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,869 INFO L146 ILogger]: Checked inductivity of 202 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:15:37,870 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:37,870 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 11:15:37,880 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:37,919 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:37,919 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,920 INFO L146 ILogger]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:15:37,924 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:37,971 INFO L146 ILogger]: Checked inductivity of 202 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:15:37,991 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:37,991 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:15:37,991 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:15:37,992 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:15:37,992 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:37,992 INFO L146 ILogger]: Start difference. First operand 348 states and 388 transitions. Second operand 10 states. [2019-05-23 11:15:38,185 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:38,186 INFO L146 ILogger]: Finished difference Result 664 states and 748 transitions. [2019-05-23 11:15:38,190 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:15:38,190 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 104 [2019-05-23 11:15:38,191 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:38,193 INFO L146 ILogger]: With dead ends: 664 [2019-05-23 11:15:38,193 INFO L146 ILogger]: Without dead ends: 447 [2019-05-23 11:15:38,194 INFO L146 ILogger]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:38,195 INFO L146 ILogger]: Start minimizeSevpa. Operand 447 states. [2019-05-23 11:15:38,205 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 447 to 399. [2019-05-23 11:15:38,205 INFO L146 ILogger]: Start removeUnreachable. Operand 399 states. [2019-05-23 11:15:38,207 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 399 states to 399 states and 445 transitions. [2019-05-23 11:15:38,207 INFO L146 ILogger]: Start accepts. Automaton has 399 states and 445 transitions. Word has length 104 [2019-05-23 11:15:38,208 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:38,208 INFO L146 ILogger]: Abstraction has 399 states and 445 transitions. [2019-05-23 11:15:38,208 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:15:38,208 INFO L146 ILogger]: Start isEmpty. Operand 399 states and 445 transitions. [2019-05-23 11:15:38,211 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 118 [2019-05-23 11:15:38,211 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:38,211 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:38,212 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:38,212 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:38,212 INFO L146 ILogger]: Analyzing trace with hash -1816306144, now seen corresponding path program 3 times [2019-05-23 11:15:38,212 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:38,212 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:38,213 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:38,213 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:38,214 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:38,250 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:38,474 INFO L146 ILogger]: Checked inductivity of 281 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:15:38,474 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:38,474 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 11:15:38,487 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:38,507 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:15:38,507 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:38,508 INFO L146 ILogger]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:15:38,512 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:38,790 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:38,791 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 61 [2019-05-23 11:15:38,795 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:15:38,865 INFO L146 ILogger]: treesize reduction 39, result has 46.6 percent of original size [2019-05-23 11:15:38,867 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:15:38,867 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:37, output treesize:30 [2019-05-23 11:15:39,477 WARN L146 ILogger]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-05-23 11:15:39,478 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:39,479 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:15:39,483 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:15:39,610 WARN L146 ILogger]: Spent 126.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 3 [2019-05-23 11:15:39,611 INFO L146 ILogger]: treesize reduction 17, result has 15.0 percent of original size [2019-05-23 11:15:39,611 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:15:39,612 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:15:40,038 INFO L146 ILogger]: Checked inductivity of 281 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2019-05-23 11:15:40,057 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:40,058 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2019-05-23 11:15:40,058 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:15:40,059 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:15:40,059 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:15:40,059 INFO L146 ILogger]: Start difference. First operand 399 states and 445 transitions. Second operand 20 states. [2019-05-23 11:16:22,892 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:22,892 INFO L146 ILogger]: Finished difference Result 928 states and 1036 transitions. [2019-05-23 11:16:22,893 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2019-05-23 11:16:22,893 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 117 [2019-05-23 11:16:22,894 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:22,898 INFO L146 ILogger]: With dead ends: 928 [2019-05-23 11:16:22,898 INFO L146 ILogger]: Without dead ends: 681 [2019-05-23 11:16:22,903 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3194 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1596, Invalid=7334, Unknown=0, NotChecked=0, Total=8930 [2019-05-23 11:16:22,904 INFO L146 ILogger]: Start minimizeSevpa. Operand 681 states. [2019-05-23 11:16:22,916 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 681 to 507. [2019-05-23 11:16:22,917 INFO L146 ILogger]: Start removeUnreachable. Operand 507 states. [2019-05-23 11:16:22,918 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 507 states to 507 states and 569 transitions. [2019-05-23 11:16:22,919 INFO L146 ILogger]: Start accepts. Automaton has 507 states and 569 transitions. Word has length 117 [2019-05-23 11:16:22,919 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:22,919 INFO L146 ILogger]: Abstraction has 507 states and 569 transitions. [2019-05-23 11:16:22,919 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:16:22,919 INFO L146 ILogger]: Start isEmpty. Operand 507 states and 569 transitions. [2019-05-23 11:16:22,921 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:16:22,921 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:22,922 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:22,922 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:22,922 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:22,922 INFO L146 ILogger]: Analyzing trace with hash 1315001195, now seen corresponding path program 4 times [2019-05-23 11:16:22,923 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:22,923 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:22,924 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:22,924 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:22,924 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:22,946 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:23,108 INFO L146 ILogger]: Checked inductivity of 373 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-05-23 11:16:23,109 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:23,109 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 11:16:23,121 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:23,152 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:23,153 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:23,154 INFO L146 ILogger]: Trace formula consists of 149 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:16:23,157 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:23,219 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:16:23,220 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:23,227 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:23,228 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:23,228 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:3 [2019-05-23 11:16:23,353 INFO L146 ILogger]: treesize reduction 45, result has 19.6 percent of original size [2019-05-23 11:16:23,354 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2019-05-23 11:16:23,354 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:23,362 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:23,363 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:16:23,364 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:34 [2019-05-23 11:16:24,929 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:24,930 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-05-23 11:16:24,931 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:24,955 INFO L146 ILogger]: treesize reduction 30, result has 44.4 percent of original size [2019-05-23 11:16:24,956 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:24,957 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:9 [2019-05-23 11:16:25,247 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:16:25,248 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:25,249 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:25,250 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:25,250 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-05-23 11:16:25,288 INFO L146 ILogger]: Checked inductivity of 373 backedges. 52 proven. 318 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:16:25,308 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:25,308 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22] total 30 [2019-05-23 11:16:25,309 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:16:25,309 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:16:25,309 INFO L146 ILogger]: CoverageRelationStatistics Valid=199, Invalid=670, Unknown=1, NotChecked=0, Total=870 [2019-05-23 11:16:25,310 INFO L146 ILogger]: Start difference. First operand 507 states and 569 transitions. Second operand 30 states. [2019-05-23 11:16:27,415 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:27,416 INFO L146 ILogger]: Finished difference Result 1044 states and 1183 transitions. [2019-05-23 11:16:27,416 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:16:27,417 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 130 [2019-05-23 11:16:27,417 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:27,421 INFO L146 ILogger]: With dead ends: 1044 [2019-05-23 11:16:27,421 INFO L146 ILogger]: Without dead ends: 717 [2019-05-23 11:16:27,423 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=419, Invalid=1932, Unknown=1, NotChecked=0, Total=2352 [2019-05-23 11:16:27,424 INFO L146 ILogger]: Start minimizeSevpa. Operand 717 states. [2019-05-23 11:16:27,438 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 717 to 615. [2019-05-23 11:16:27,438 INFO L146 ILogger]: Start removeUnreachable. Operand 615 states. [2019-05-23 11:16:27,440 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 615 states to 615 states and 693 transitions. [2019-05-23 11:16:27,440 INFO L146 ILogger]: Start accepts. Automaton has 615 states and 693 transitions. Word has length 130 [2019-05-23 11:16:27,440 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:27,441 INFO L146 ILogger]: Abstraction has 615 states and 693 transitions. [2019-05-23 11:16:27,441 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:16:27,441 INFO L146 ILogger]: Start isEmpty. Operand 615 states and 693 transitions. [2019-05-23 11:16:27,443 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:16:27,443 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:27,443 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:27,444 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:27,444 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:27,444 INFO L146 ILogger]: Analyzing trace with hash 1365170660, now seen corresponding path program 5 times [2019-05-23 11:16:27,444 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:27,444 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:27,445 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:27,445 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:27,445 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:27,467 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:27,625 INFO L146 ILogger]: Checked inductivity of 478 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-05-23 11:16:27,625 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:27,625 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 11:16:27,636 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:27,716 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:16:27,717 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:27,719 INFO L146 ILogger]: Trace formula consists of 225 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:16:27,721 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:27,752 INFO L146 ILogger]: Checked inductivity of 478 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2019-05-23 11:16:27,803 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:27,803 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:16:27,804 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:27,804 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:27,805 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:27,805 INFO L146 ILogger]: Start difference. First operand 615 states and 693 transitions. Second operand 13 states. [2019-05-23 11:16:28,244 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:28,244 INFO L146 ILogger]: Finished difference Result 1147 states and 1304 transitions. [2019-05-23 11:16:28,246 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:16:28,246 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 143 [2019-05-23 11:16:28,247 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:28,253 INFO L146 ILogger]: With dead ends: 1147 [2019-05-23 11:16:28,254 INFO L146 ILogger]: Without dead ends: 751 [2019-05-23 11:16:28,255 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:28,257 INFO L146 ILogger]: Start minimizeSevpa. Operand 751 states. [2019-05-23 11:16:28,277 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 751 to 679. [2019-05-23 11:16:28,277 INFO L146 ILogger]: Start removeUnreachable. Operand 679 states. [2019-05-23 11:16:28,279 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 679 states to 679 states and 765 transitions. [2019-05-23 11:16:28,279 INFO L146 ILogger]: Start accepts. Automaton has 679 states and 765 transitions. Word has length 143 [2019-05-23 11:16:28,279 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:28,280 INFO L146 ILogger]: Abstraction has 679 states and 765 transitions. [2019-05-23 11:16:28,280 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:16:28,280 INFO L146 ILogger]: Start isEmpty. Operand 679 states and 765 transitions. [2019-05-23 11:16:28,282 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 157 [2019-05-23 11:16:28,283 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:28,283 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:28,283 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:28,283 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:28,284 INFO L146 ILogger]: Analyzing trace with hash -1542136921, now seen corresponding path program 6 times [2019-05-23 11:16:28,284 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:28,284 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:28,285 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:28,285 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:28,285 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:28,306 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:28,913 INFO L146 ILogger]: Checked inductivity of 596 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2019-05-23 11:16:28,914 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:28,914 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 11:16:28,923 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:28,952 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:16:28,952 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:28,954 INFO L146 ILogger]: Trace formula consists of 135 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:16:28,958 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:28,969 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:16:28,969 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:28,980 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:28,981 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:28,981 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:16:29,020 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:29,020 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:16:29,021 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:29,027 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:29,027 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:29,027 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2019-05-23 11:16:29,137 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2019-05-23 11:16:29,138 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:29,156 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:29,157 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:16:29,157 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:37 [2019-05-23 11:16:29,220 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:29,221 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 58 [2019-05-23 11:16:29,224 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:29,274 INFO L146 ILogger]: treesize reduction 18, result has 75.7 percent of original size [2019-05-23 11:16:29,276 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-05-23 11:16:29,277 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:43, output treesize:39 [2019-05-23 11:16:29,338 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:16:29,338 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:29,340 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:29,340 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:29,340 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:16:29,442 INFO L146 ILogger]: Checked inductivity of 596 backedges. 8 proven. 89 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2019-05-23 11:16:29,462 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:29,462 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2019-05-23 11:16:29,463 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:16:29,463 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:16:29,464 INFO L146 ILogger]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:16:29,465 INFO L146 ILogger]: Start difference. First operand 679 states and 765 transitions. Second operand 25 states. [2019-05-23 11:16:33,694 WARN L146 ILogger]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2019-05-23 11:16:34,772 WARN L146 ILogger]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-05-23 11:16:40,380 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:40,380 INFO L146 ILogger]: Finished difference Result 1627 states and 1824 transitions. [2019-05-23 11:16:40,381 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2019-05-23 11:16:40,381 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 156 [2019-05-23 11:16:40,382 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:40,387 INFO L146 ILogger]: With dead ends: 1627 [2019-05-23 11:16:40,388 INFO L146 ILogger]: Without dead ends: 1196 [2019-05-23 11:16:40,395 INFO L146 ILogger]: 0 DeclaredPredicates, 302 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10370 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=4327, Invalid=20795, Unknown=0, NotChecked=0, Total=25122 [2019-05-23 11:16:40,397 INFO L146 ILogger]: Start minimizeSevpa. Operand 1196 states. [2019-05-23 11:16:40,418 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1196 to 758. [2019-05-23 11:16:40,418 INFO L146 ILogger]: Start removeUnreachable. Operand 758 states. [2019-05-23 11:16:40,420 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 758 states to 758 states and 854 transitions. [2019-05-23 11:16:40,420 INFO L146 ILogger]: Start accepts. Automaton has 758 states and 854 transitions. Word has length 156 [2019-05-23 11:16:40,420 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:40,420 INFO L146 ILogger]: Abstraction has 758 states and 854 transitions. [2019-05-23 11:16:40,421 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:16:40,421 INFO L146 ILogger]: Start isEmpty. Operand 758 states and 854 transitions. [2019-05-23 11:16:40,424 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 170 [2019-05-23 11:16:40,424 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:40,424 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:40,424 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:40,425 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:40,425 INFO L146 ILogger]: Analyzing trace with hash 1711532968, now seen corresponding path program 7 times [2019-05-23 11:16:40,425 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:40,425 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:40,426 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:40,426 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:40,426 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:40,445 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:41,356 INFO L146 ILogger]: Checked inductivity of 727 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2019-05-23 11:16:41,356 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:41,356 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 11:16:41,366 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:41,412 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:41,414 INFO L146 ILogger]: Trace formula consists of 261 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:16:41,417 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:41,536 INFO L146 ILogger]: Checked inductivity of 727 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2019-05-23 11:16:41,555 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:41,555 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:16:41,556 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:16:41,556 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:16:41,556 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:41,556 INFO L146 ILogger]: Start difference. First operand 758 states and 854 transitions. Second operand 15 states. [2019-05-23 11:16:41,793 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:41,793 INFO L146 ILogger]: Finished difference Result 1375 states and 1563 transitions. [2019-05-23 11:16:41,793 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:16:41,794 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 169 [2019-05-23 11:16:41,794 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:41,799 INFO L146 ILogger]: With dead ends: 1375 [2019-05-23 11:16:41,799 INFO L146 ILogger]: Without dead ends: 909 [2019-05-23 11:16:41,800 INFO L146 ILogger]: 0 DeclaredPredicates, 182 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:41,802 INFO L146 ILogger]: Start minimizeSevpa. Operand 909 states. [2019-05-23 11:16:41,843 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 909 to 822. [2019-05-23 11:16:41,843 INFO L146 ILogger]: Start removeUnreachable. Operand 822 states. [2019-05-23 11:16:41,846 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 822 states to 822 states and 926 transitions. [2019-05-23 11:16:41,846 INFO L146 ILogger]: Start accepts. Automaton has 822 states and 926 transitions. Word has length 169 [2019-05-23 11:16:41,847 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:41,847 INFO L146 ILogger]: Abstraction has 822 states and 926 transitions. [2019-05-23 11:16:41,847 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:16:41,847 INFO L146 ILogger]: Start isEmpty. Operand 822 states and 926 transitions. [2019-05-23 11:16:41,850 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 183 [2019-05-23 11:16:41,851 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:41,851 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:41,851 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:41,852 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:41,852 INFO L146 ILogger]: Analyzing trace with hash -484256029, now seen corresponding path program 8 times [2019-05-23 11:16:41,852 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:41,852 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:41,853 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,853 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:41,853 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,885 INFO L146 ILogger]: Conjunction of SSA is unsat