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_copy2_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:50,422 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:50,424 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:50,438 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:50,439 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:50,442 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:50,443 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:50,446 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:50,448 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:50,449 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:50,451 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:50,451 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:50,453 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:50,453 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:50,455 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:50,463 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:50,464 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:50,466 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:50,470 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:50,472 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:50,474 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:50,475 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:50,478 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:16:50,478 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:16:50,478 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:16:50,479 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:16:50,479 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:16:50,480 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:16:50,480 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:16:50,481 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:16:50,482 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:16:50,483 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:16:50,484 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:16:50,484 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:50,485 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:50,485 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:50,485 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:50,486 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:50,486 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:50,487 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:50,501 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:50,501 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:50,502 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:50,502 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:50,502 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:50,503 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:50,503 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:50,503 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:50,503 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:50,504 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:50,504 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:50,504 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:50,504 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:50,504 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:50,504 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:50,505 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:50,505 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:50,505 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:50,505 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:50,506 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:50,506 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:50,506 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:50,506 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:50,506 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:50,507 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:50,507 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:50,507 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:50,507 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:50,507 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 11:16:50,540 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:50,559 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:50,563 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:50,565 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:50,565 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:50,566 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy2_true-unreach-call_ground.i [2019-05-23 11:16:50,626 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94cc28b81/f9628967ce7b4514b4a236c7ef0b6348/FLAGfee14829f [2019-05-23 11:16:51,080 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:51,081 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy2_true-unreach-call_ground.i [2019-05-23 11:16:51,087 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94cc28b81/f9628967ce7b4514b4a236c7ef0b6348/FLAGfee14829f [2019-05-23 11:16:51,453 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94cc28b81/f9628967ce7b4514b4a236c7ef0b6348 [2019-05-23 11:16:51,462 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:51,463 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:51,465 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:51,465 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:51,468 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:51,469 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,473 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763b2076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51, skipping insertion in model container [2019-05-23 11:16:51,473 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,481 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:51,501 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:51,726 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:51,733 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:51,770 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:51,800 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:51,800 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51 WrapperNode [2019-05-23 11:16:51,801 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:51,802 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:51,802 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:51,803 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:51,815 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,828 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,860 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:51,863 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:51,863 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:51,863 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:51,875 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,875 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,877 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,877 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,894 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,903 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,910 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,912 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:51,913 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:51,916 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:51,916 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:51,918 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (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 11:16:52,107 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:16:52,107 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:52,107 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:52,107 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:52,108 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:52,108 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:52,587 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:52,587 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:16:52,589 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:52 BoogieIcfgContainer [2019-05-23 11:16:52,590 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:52,590 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:52,591 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:52,594 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:52,595 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:51" (1/3) ... [2019-05-23 11:16:52,596 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fc3b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:52, skipping insertion in model container [2019-05-23 11:16:52,596 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (2/3) ... [2019-05-23 11:16:52,596 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fc3b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:52, skipping insertion in model container [2019-05-23 11:16:52,597 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:52" (3/3) ... [2019-05-23 11:16:52,599 INFO L146 ILogger]: Analyzing ICFG standard_copy2_true-unreach-call_ground.i [2019-05-23 11:16:52,609 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:52,616 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:16:52,632 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:16:52,662 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:52,662 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:52,663 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:52,663 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:52,663 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:52,663 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:52,664 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:52,664 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:52,664 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:52,678 INFO L146 ILogger]: Start isEmpty. Operand 59 states. [2019-05-23 11:16:52,685 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:16:52,686 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,687 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] [2019-05-23 11:16:52,689 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,695 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,695 INFO L146 ILogger]: Analyzing trace with hash 114381347, now seen corresponding path program 1 times [2019-05-23 11:16:52,697 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,698 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,745 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,746 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,746 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,785 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,829 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 11:16:52,833 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:52,833 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:16:52,837 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:16:52,849 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:16:52,850 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:16:52,853 INFO L146 ILogger]: Start difference. First operand 59 states. Second operand 2 states. [2019-05-23 11:16:52,873 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:52,874 INFO L146 ILogger]: Finished difference Result 102 states and 116 transitions. [2019-05-23 11:16:52,874 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:16:52,875 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 25 [2019-05-23 11:16:52,875 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:52,884 INFO L146 ILogger]: With dead ends: 102 [2019-05-23 11:16:52,884 INFO L146 ILogger]: Without dead ends: 49 [2019-05-23 11:16:52,887 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 11:16:52,905 INFO L146 ILogger]: Start minimizeSevpa. Operand 49 states. [2019-05-23 11:16:52,921 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-05-23 11:16:52,922 INFO L146 ILogger]: Start removeUnreachable. Operand 49 states. [2019-05-23 11:16:52,924 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2019-05-23 11:16:52,926 INFO L146 ILogger]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 25 [2019-05-23 11:16:52,926 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,926 INFO L146 ILogger]: Abstraction has 49 states and 52 transitions. [2019-05-23 11:16:52,926 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:16:52,926 INFO L146 ILogger]: Start isEmpty. Operand 49 states and 52 transitions. [2019-05-23 11:16:52,927 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:16:52,928 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,928 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] [2019-05-23 11:16:52,928 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,929 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,929 INFO L146 ILogger]: Analyzing trace with hash -273081533, now seen corresponding path program 1 times [2019-05-23 11:16:52,929 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,929 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,930 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,930 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,931 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,946 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,004 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 11:16:53,004 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:53,004 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:53,007 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:53,007 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:53,008 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:53,008 INFO L146 ILogger]: Start difference. First operand 49 states and 52 transitions. Second operand 3 states. [2019-05-23 11:16:53,097 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,098 INFO L146 ILogger]: Finished difference Result 88 states and 94 transitions. [2019-05-23 11:16:53,098 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:53,098 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 25 [2019-05-23 11:16:53,099 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,100 INFO L146 ILogger]: With dead ends: 88 [2019-05-23 11:16:53,100 INFO L146 ILogger]: Without dead ends: 55 [2019-05-23 11:16:53,102 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 11:16:53,103 INFO L146 ILogger]: Start minimizeSevpa. Operand 55 states. [2019-05-23 11:16:53,108 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 55 to 50. [2019-05-23 11:16:53,108 INFO L146 ILogger]: Start removeUnreachable. Operand 50 states. [2019-05-23 11:16:53,109 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2019-05-23 11:16:53,109 INFO L146 ILogger]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 25 [2019-05-23 11:16:53,110 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,110 INFO L146 ILogger]: Abstraction has 50 states and 53 transitions. [2019-05-23 11:16:53,110 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:53,110 INFO L146 ILogger]: Start isEmpty. Operand 50 states and 53 transitions. [2019-05-23 11:16:53,111 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:16:53,112 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,112 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:53,112 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,112 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,113 INFO L146 ILogger]: Analyzing trace with hash 1394296880, now seen corresponding path program 1 times [2019-05-23 11:16:53,113 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,113 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,114 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,114 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:53,114 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,135 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,272 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:53,272 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,272 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 11:16:53,282 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:53,311 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,313 INFO L146 ILogger]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,318 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:53,384 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:16:53,404 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:16:53,404 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:16:53,405 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:16:53,405 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:16:53,406 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:16:53,407 INFO L146 ILogger]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2019-05-23 11:16:53,815 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,815 INFO L146 ILogger]: Finished difference Result 107 states and 115 transitions. [2019-05-23 11:16:53,816 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:16:53,816 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 32 [2019-05-23 11:16:53,817 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,818 INFO L146 ILogger]: With dead ends: 107 [2019-05-23 11:16:53,818 INFO L146 ILogger]: Without dead ends: 74 [2019-05-23 11:16:53,819 INFO L146 ILogger]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:16:53,819 INFO L146 ILogger]: Start minimizeSevpa. Operand 74 states. [2019-05-23 11:16:53,825 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 74 to 59. [2019-05-23 11:16:53,825 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:16:53,826 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2019-05-23 11:16:53,827 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 32 [2019-05-23 11:16:53,827 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,827 INFO L146 ILogger]: Abstraction has 59 states and 62 transitions. [2019-05-23 11:16:53,827 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:16:53,827 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 62 transitions. [2019-05-23 11:16:53,829 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 54 [2019-05-23 11:16:53,829 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,829 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:53,830 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,830 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,830 INFO L146 ILogger]: Analyzing trace with hash 621467754, now seen corresponding path program 1 times [2019-05-23 11:16:53,830 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,831 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,832 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,832 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:53,832 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,870 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,977 INFO L146 ILogger]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:16:53,977 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,978 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 11:16:53,997 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:54,050 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,052 INFO L146 ILogger]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:54,055 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:54,177 INFO L146 ILogger]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:16:54,206 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:54,207 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:16:54,207 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:16:54,207 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:16:54,208 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:16:54,208 INFO L146 ILogger]: Start difference. First operand 59 states and 62 transitions. Second operand 10 states. [2019-05-23 11:16:54,819 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:54,819 INFO L146 ILogger]: Finished difference Result 123 states and 130 transitions. [2019-05-23 11:16:54,823 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:16:54,823 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 53 [2019-05-23 11:16:54,824 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:54,824 INFO L146 ILogger]: With dead ends: 123 [2019-05-23 11:16:54,825 INFO L146 ILogger]: Without dead ends: 88 [2019-05-23 11:16:54,825 INFO L146 ILogger]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:16:54,826 INFO L146 ILogger]: Start minimizeSevpa. Operand 88 states. [2019-05-23 11:16:54,832 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 88 to 73. [2019-05-23 11:16:54,832 INFO L146 ILogger]: Start removeUnreachable. Operand 73 states. [2019-05-23 11:16:54,833 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2019-05-23 11:16:54,833 INFO L146 ILogger]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 53 [2019-05-23 11:16:54,834 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:54,834 INFO L146 ILogger]: Abstraction has 73 states and 76 transitions. [2019-05-23 11:16:54,834 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:16:54,834 INFO L146 ILogger]: Start isEmpty. Operand 73 states and 76 transitions. [2019-05-23 11:16:54,836 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:16:54,836 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:54,836 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:54,836 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:54,837 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:54,837 INFO L146 ILogger]: Analyzing trace with hash 153833996, now seen corresponding path program 2 times [2019-05-23 11:16:54,837 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:54,837 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:54,838 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,838 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:54,838 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,857 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,932 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:16:54,932 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:54,933 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 11:16:54,942 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:54,969 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:54,970 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,970 INFO L146 ILogger]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:54,973 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:55,081 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:16:55,099 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:55,100 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:16:55,100 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:55,100 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:55,101 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:55,101 INFO L146 ILogger]: Start difference. First operand 73 states and 76 transitions. Second operand 12 states. [2019-05-23 11:16:56,061 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,062 INFO L146 ILogger]: Finished difference Result 139 states and 146 transitions. [2019-05-23 11:16:56,062 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:16:56,063 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 67 [2019-05-23 11:16:56,063 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,064 INFO L146 ILogger]: With dead ends: 139 [2019-05-23 11:16:56,065 INFO L146 ILogger]: Without dead ends: 97 [2019-05-23 11:16:56,067 INFO L146 ILogger]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:16:56,067 INFO L146 ILogger]: Start minimizeSevpa. Operand 97 states. [2019-05-23 11:16:56,073 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 97 to 87. [2019-05-23 11:16:56,073 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:16:56,074 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2019-05-23 11:16:56,075 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 67 [2019-05-23 11:16:56,075 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,075 INFO L146 ILogger]: Abstraction has 87 states and 90 transitions. [2019-05-23 11:16:56,075 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:56,075 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 90 transitions. [2019-05-23 11:16:56,077 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:16:56,077 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,077 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:56,077 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,078 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,078 INFO L146 ILogger]: Analyzing trace with hash -1787211165, now seen corresponding path program 3 times [2019-05-23 11:16:56,078 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,078 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:56,079 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,079 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:56,079 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,106 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,264 INFO L146 ILogger]: Checked inductivity of 64 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:16:56,264 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:56,264 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 11:16:56,274 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:56,341 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:16:56,341 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,342 INFO L146 ILogger]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:56,346 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:56,474 INFO L146 ILogger]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:16:56,496 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:56,496 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:16:56,497 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:16:56,497 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:16:56,498 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:16:56,498 INFO L146 ILogger]: Start difference. First operand 87 states and 90 transitions. Second operand 16 states. [2019-05-23 11:16:57,117 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:57,117 INFO L146 ILogger]: Finished difference Result 160 states and 167 transitions. [2019-05-23 11:16:57,125 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:16:57,125 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 81 [2019-05-23 11:16:57,125 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:57,126 INFO L146 ILogger]: With dead ends: 160 [2019-05-23 11:16:57,126 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:16:57,127 INFO L146 ILogger]: 0 DeclaredPredicates, 103 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:16:57,128 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:16:57,133 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 101. [2019-05-23 11:16:57,134 INFO L146 ILogger]: Start removeUnreachable. Operand 101 states. [2019-05-23 11:16:57,135 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2019-05-23 11:16:57,135 INFO L146 ILogger]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 81 [2019-05-23 11:16:57,135 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:57,136 INFO L146 ILogger]: Abstraction has 101 states and 104 transitions. [2019-05-23 11:16:57,136 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:16:57,136 INFO L146 ILogger]: Start isEmpty. Operand 101 states and 104 transitions. [2019-05-23 11:16:57,137 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 96 [2019-05-23 11:16:57,137 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:57,138 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:57,138 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:57,138 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:57,138 INFO L146 ILogger]: Analyzing trace with hash -863641467, now seen corresponding path program 4 times [2019-05-23 11:16:57,138 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:57,139 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,139 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,140 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:57,140 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,176 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,409 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:16:57,410 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,410 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 11:16:57,419 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:57,473 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:57,473 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,474 INFO L146 ILogger]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:16:57,478 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:57,544 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:16:57,565 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:57,565 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:16:57,565 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:16:57,565 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:16:57,566 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:57,566 INFO L146 ILogger]: Start difference. First operand 101 states and 104 transitions. Second operand 15 states. [2019-05-23 11:16:57,798 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:57,798 INFO L146 ILogger]: Finished difference Result 169 states and 175 transitions. [2019-05-23 11:16:57,799 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:16:57,799 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 95 [2019-05-23 11:16:57,799 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:57,800 INFO L146 ILogger]: With dead ends: 169 [2019-05-23 11:16:57,800 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:16:57,801 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:16:57,802 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:16:57,807 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 108. [2019-05-23 11:16:57,808 INFO L146 ILogger]: Start removeUnreachable. Operand 108 states. [2019-05-23 11:16:57,809 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2019-05-23 11:16:57,809 INFO L146 ILogger]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 95 [2019-05-23 11:16:57,809 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:57,809 INFO L146 ILogger]: Abstraction has 108 states and 111 transitions. [2019-05-23 11:16:57,809 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:16:57,810 INFO L146 ILogger]: Start isEmpty. Operand 108 states and 111 transitions. [2019-05-23 11:16:57,811 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 103 [2019-05-23 11:16:57,811 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:57,811 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 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 11:16:57,812 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:57,812 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:57,812 INFO L146 ILogger]: Analyzing trace with hash 1621884850, now seen corresponding path program 5 times [2019-05-23 11:16:57,812 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:57,812 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,813 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,813 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:57,814 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,833 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,992 INFO L146 ILogger]: Checked inductivity of 144 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:16:57,993 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,993 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 11:16:58,007 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:58,312 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:16:58,312 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,314 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:58,317 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:58,476 INFO L146 ILogger]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-05-23 11:16:58,495 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:58,495 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:16:58,496 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:16:58,496 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:16:58,496 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:16:58,497 INFO L146 ILogger]: Start difference. First operand 108 states and 111 transitions. Second operand 22 states. [2019-05-23 11:16:59,280 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:59,281 INFO L146 ILogger]: Finished difference Result 188 states and 195 transitions. [2019-05-23 11:16:59,281 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:16:59,281 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 102 [2019-05-23 11:16:59,282 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:59,282 INFO L146 ILogger]: With dead ends: 188 [2019-05-23 11:16:59,282 INFO L146 ILogger]: Without dead ends: 132 [2019-05-23 11:16:59,284 INFO L146 ILogger]: 0 DeclaredPredicates, 134 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:16:59,284 INFO L146 ILogger]: Start minimizeSevpa. Operand 132 states. [2019-05-23 11:16:59,289 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 132 to 122. [2019-05-23 11:16:59,290 INFO L146 ILogger]: Start removeUnreachable. Operand 122 states. [2019-05-23 11:16:59,291 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2019-05-23 11:16:59,291 INFO L146 ILogger]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 102 [2019-05-23 11:16:59,291 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:59,291 INFO L146 ILogger]: Abstraction has 122 states and 125 transitions. [2019-05-23 11:16:59,291 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:16:59,291 INFO L146 ILogger]: Start isEmpty. Operand 122 states and 125 transitions. [2019-05-23 11:16:59,293 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:16:59,293 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:59,293 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:59,294 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:59,294 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:59,294 INFO L146 ILogger]: Analyzing trace with hash -249557168, now seen corresponding path program 6 times [2019-05-23 11:16:59,294 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:59,294 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:59,295 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,295 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:59,296 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,318 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,506 INFO L146 ILogger]: Checked inductivity of 209 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:16:59,506 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:59,506 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 11:16:59,515 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:59,545 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:16:59,545 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,546 INFO L146 ILogger]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:59,549 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:59,672 INFO L146 ILogger]: Checked inductivity of 209 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-05-23 11:16:59,691 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:59,691 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:16:59,691 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:16:59,692 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:16:59,692 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:16:59,692 INFO L146 ILogger]: Start difference. First operand 122 states and 125 transitions. Second operand 22 states. [2019-05-23 11:17:00,225 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:00,226 INFO L146 ILogger]: Finished difference Result 209 states and 216 transitions. [2019-05-23 11:17:00,226 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:17:00,227 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 116 [2019-05-23 11:17:00,227 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:00,229 INFO L146 ILogger]: With dead ends: 209 [2019-05-23 11:17:00,229 INFO L146 ILogger]: Without dead ends: 146 [2019-05-23 11:17:00,230 INFO L146 ILogger]: 0 DeclaredPredicates, 150 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:17:00,230 INFO L146 ILogger]: Start minimizeSevpa. Operand 146 states. [2019-05-23 11:17:00,238 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 146 to 136. [2019-05-23 11:17:00,238 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:17:00,239 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2019-05-23 11:17:00,239 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 116 [2019-05-23 11:17:00,239 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:00,240 INFO L146 ILogger]: Abstraction has 136 states and 139 transitions. [2019-05-23 11:17:00,240 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:17:00,240 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 139 transitions. [2019-05-23 11:17:00,242 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:17:00,242 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:00,243 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:00,243 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:00,243 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:00,244 INFO L146 ILogger]: Analyzing trace with hash 1616415641, now seen corresponding path program 7 times [2019-05-23 11:17:00,244 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:00,244 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:00,245 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:00,245 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:00,245 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:00,267 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,510 INFO L146 ILogger]: Checked inductivity of 274 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:17:00,510 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:00,510 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:00,521 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:00,564 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,565 INFO L146 ILogger]: Trace formula consists of 210 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:17:00,568 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:00,634 INFO L146 ILogger]: Checked inductivity of 274 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:17:00,652 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:00,652 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:17:00,653 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:17:00,653 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:17:00,653 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:17:00,654 INFO L146 ILogger]: Start difference. First operand 136 states and 139 transitions. Second operand 21 states. [2019-05-23 11:17:01,162 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:01,162 INFO L146 ILogger]: Finished difference Result 218 states and 224 transitions. [2019-05-23 11:17:01,163 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:17:01,163 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 130 [2019-05-23 11:17:01,163 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:01,164 INFO L146 ILogger]: With dead ends: 218 [2019-05-23 11:17:01,164 INFO L146 ILogger]: Without dead ends: 148 [2019-05-23 11:17:01,165 INFO L146 ILogger]: 0 DeclaredPredicates, 164 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:17:01,165 INFO L146 ILogger]: Start minimizeSevpa. Operand 148 states. [2019-05-23 11:17:01,169 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 148 to 143. [2019-05-23 11:17:01,169 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:17:01,170 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2019-05-23 11:17:01,170 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 130 [2019-05-23 11:17:01,171 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:01,171 INFO L146 ILogger]: Abstraction has 143 states and 146 transitions. [2019-05-23 11:17:01,171 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:17:01,171 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 146 transitions. [2019-05-23 11:17:01,173 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:17:01,173 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:01,173 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:01,174 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:01,174 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:01,174 INFO L146 ILogger]: Analyzing trace with hash -1050479284, now seen corresponding path program 8 times [2019-05-23 11:17:01,174 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:01,174 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:01,175 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,175 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:01,175 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,193 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,043 INFO L146 ILogger]: Checked inductivity of 331 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:17:02,043 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:02,043 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:02,052 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:02,087 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:02,088 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,089 INFO L146 ILogger]: Trace formula consists of 220 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:17:02,091 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:02,141 INFO L146 ILogger]: Checked inductivity of 331 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:17:02,161 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:02,161 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:17:02,162 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:17:02,162 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:17:02,162 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:02,163 INFO L146 ILogger]: Start difference. First operand 143 states and 146 transitions. Second operand 23 states. [2019-05-23 11:17:02,535 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:02,535 INFO L146 ILogger]: Finished difference Result 225 states and 231 transitions. [2019-05-23 11:17:02,535 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:17:02,536 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 137 [2019-05-23 11:17:02,536 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:02,537 INFO L146 ILogger]: With dead ends: 225 [2019-05-23 11:17:02,537 INFO L146 ILogger]: Without dead ends: 155 [2019-05-23 11:17:02,538 INFO L146 ILogger]: 0 DeclaredPredicates, 175 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:17:02,538 INFO L146 ILogger]: Start minimizeSevpa. Operand 155 states. [2019-05-23 11:17:02,542 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 155 to 150. [2019-05-23 11:17:02,542 INFO L146 ILogger]: Start removeUnreachable. Operand 150 states. [2019-05-23 11:17:02,543 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2019-05-23 11:17:02,543 INFO L146 ILogger]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 137 [2019-05-23 11:17:02,543 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:02,543 INFO L146 ILogger]: Abstraction has 150 states and 153 transitions. [2019-05-23 11:17:02,543 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:17:02,544 INFO L146 ILogger]: Start isEmpty. Operand 150 states and 153 transitions. [2019-05-23 11:17:02,545 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:17:02,545 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:02,545 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:02,546 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:02,546 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:02,546 INFO L146 ILogger]: Analyzing trace with hash -17642439, now seen corresponding path program 9 times [2019-05-23 11:17:02,546 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:02,546 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:02,547 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:02,547 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:02,548 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:02,565 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,807 INFO L146 ILogger]: Checked inductivity of 395 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:17:02,808 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:02,808 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:02,817 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:02,857 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:17:02,857 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,858 INFO L146 ILogger]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:02,860 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:02,993 INFO L146 ILogger]: Checked inductivity of 395 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-05-23 11:17:03,011 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:03,012 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-05-23 11:17:03,012 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:17:03,012 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:17:03,013 INFO L146 ILogger]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:17:03,013 INFO L146 ILogger]: Start difference. First operand 150 states and 153 transitions. Second operand 30 states. [2019-05-23 11:17:04,016 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:04,016 INFO L146 ILogger]: Finished difference Result 244 states and 251 transitions. [2019-05-23 11:17:04,017 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:17:04,017 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 144 [2019-05-23 11:17:04,017 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:04,018 INFO L146 ILogger]: With dead ends: 244 [2019-05-23 11:17:04,018 INFO L146 ILogger]: Without dead ends: 174 [2019-05-23 11:17:04,020 INFO L146 ILogger]: 0 DeclaredPredicates, 192 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:17:04,020 INFO L146 ILogger]: Start minimizeSevpa. Operand 174 states. [2019-05-23 11:17:04,023 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 174 to 164. [2019-05-23 11:17:04,024 INFO L146 ILogger]: Start removeUnreachable. Operand 164 states. [2019-05-23 11:17:04,024 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2019-05-23 11:17:04,024 INFO L146 ILogger]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 144 [2019-05-23 11:17:04,025 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:04,025 INFO L146 ILogger]: Abstraction has 164 states and 167 transitions. [2019-05-23 11:17:04,025 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:17:04,025 INFO L146 ILogger]: Start isEmpty. Operand 164 states and 167 transitions. [2019-05-23 11:17:04,026 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 159 [2019-05-23 11:17:04,027 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:04,027 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:04,027 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:04,027 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:04,027 INFO L146 ILogger]: Analyzing trace with hash 1855066384, now seen corresponding path program 10 times [2019-05-23 11:17:04,028 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:04,028 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:04,028 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,028 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:04,029 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,047 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,400 INFO L146 ILogger]: Checked inductivity of 488 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:17:04,401 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:04,401 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:04,410 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:04,840 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:04,840 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,843 INFO L146 ILogger]: Trace formula consists of 250 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:17:04,845 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:04,967 INFO L146 ILogger]: Checked inductivity of 488 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:17:04,995 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:04,995 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:17:04,996 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:17:04,996 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:17:04,997 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:17:04,997 INFO L146 ILogger]: Start difference. First operand 164 states and 167 transitions. Second operand 27 states. [2019-05-23 11:17:05,526 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:05,526 INFO L146 ILogger]: Finished difference Result 253 states and 259 transitions. [2019-05-23 11:17:05,533 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:17:05,533 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 158 [2019-05-23 11:17:05,533 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:05,534 INFO L146 ILogger]: With dead ends: 253 [2019-05-23 11:17:05,534 INFO L146 ILogger]: Without dead ends: 176 [2019-05-23 11:17:05,536 INFO L146 ILogger]: 0 DeclaredPredicates, 204 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:17:05,536 INFO L146 ILogger]: Start minimizeSevpa. Operand 176 states. [2019-05-23 11:17:05,539 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 176 to 171. [2019-05-23 11:17:05,539 INFO L146 ILogger]: Start removeUnreachable. Operand 171 states. [2019-05-23 11:17:05,540 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2019-05-23 11:17:05,540 INFO L146 ILogger]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 158 [2019-05-23 11:17:05,540 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:05,540 INFO L146 ILogger]: Abstraction has 171 states and 174 transitions. [2019-05-23 11:17:05,540 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:17:05,540 INFO L146 ILogger]: Start isEmpty. Operand 171 states and 174 transitions. [2019-05-23 11:17:05,541 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:17:05,541 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:05,542 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:05,542 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:05,542 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:05,542 INFO L146 ILogger]: Analyzing trace with hash -466501565, now seen corresponding path program 11 times [2019-05-23 11:17:05,542 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:05,542 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:05,543 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:05,543 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:05,543 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:05,560 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:06,288 INFO L146 ILogger]: Checked inductivity of 566 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:17:06,288 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:06,288 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:06,297 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:07,941 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:17:07,942 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:07,945 INFO L146 ILogger]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:17:07,947 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:08,145 INFO L146 ILogger]: Checked inductivity of 566 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2019-05-23 11:17:08,166 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:08,166 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2019-05-23 11:17:08,167 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:17:08,167 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:17:08,168 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:17:08,168 INFO L146 ILogger]: Start difference. First operand 171 states and 174 transitions. Second operand 36 states. [2019-05-23 11:17:09,792 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:09,793 INFO L146 ILogger]: Finished difference Result 272 states and 279 transitions. [2019-05-23 11:17:09,793 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:17:09,793 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 165 [2019-05-23 11:17:09,794 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:09,795 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:17:09,795 INFO L146 ILogger]: Without dead ends: 195 [2019-05-23 11:17:09,798 INFO L146 ILogger]: 0 DeclaredPredicates, 223 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:17:09,798 INFO L146 ILogger]: Start minimizeSevpa. Operand 195 states. [2019-05-23 11:17:09,801 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 195 to 185. [2019-05-23 11:17:09,801 INFO L146 ILogger]: Start removeUnreachable. Operand 185 states. [2019-05-23 11:17:09,802 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 185 states to 185 states and 188 transitions. [2019-05-23 11:17:09,802 INFO L146 ILogger]: Start accepts. Automaton has 185 states and 188 transitions. Word has length 165 [2019-05-23 11:17:09,802 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:09,802 INFO L146 ILogger]: Abstraction has 185 states and 188 transitions. [2019-05-23 11:17:09,803 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:17:09,803 INFO L146 ILogger]: Start isEmpty. Operand 185 states and 188 transitions. [2019-05-23 11:17:09,803 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 180 [2019-05-23 11:17:09,804 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:09,804 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:09,804 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:09,804 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:09,805 INFO L146 ILogger]: Analyzing trace with hash -1701231732, now seen corresponding path program 12 times [2019-05-23 11:17:09,805 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:09,805 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:09,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:09,806 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:09,806 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:09,824 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:10,807 INFO L146 ILogger]: Checked inductivity of 680 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:17:10,808 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:10,808 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:10,818 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:11,043 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:17:11,044 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:11,045 INFO L146 ILogger]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:17:11,047 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:11,853 INFO L146 ILogger]: Checked inductivity of 680 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2019-05-23 11:17:11,882 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:11,882 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 38 [2019-05-23 11:17:11,882 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:17:11,883 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:17:11,883 INFO L146 ILogger]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:17:11,884 INFO L146 ILogger]: Start difference. First operand 185 states and 188 transitions. Second operand 38 states. [2019-05-23 11:17:12,805 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:12,805 INFO L146 ILogger]: Finished difference Result 293 states and 300 transitions. [2019-05-23 11:17:12,805 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:17:12,805 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 179 [2019-05-23 11:17:12,806 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:12,807 INFO L146 ILogger]: With dead ends: 293 [2019-05-23 11:17:12,807 INFO L146 ILogger]: Without dead ends: 209 [2019-05-23 11:17:12,809 INFO L146 ILogger]: 0 DeclaredPredicates, 241 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1100, Invalid=4012, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:17:12,809 INFO L146 ILogger]: Start minimizeSevpa. Operand 209 states. [2019-05-23 11:17:12,812 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 209 to 199. [2019-05-23 11:17:12,812 INFO L146 ILogger]: Start removeUnreachable. Operand 199 states. [2019-05-23 11:17:12,813 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 199 states to 199 states and 202 transitions. [2019-05-23 11:17:12,813 INFO L146 ILogger]: Start accepts. Automaton has 199 states and 202 transitions. Word has length 179 [2019-05-23 11:17:12,814 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:12,814 INFO L146 ILogger]: Abstraction has 199 states and 202 transitions. [2019-05-23 11:17:12,814 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:17:12,814 INFO L146 ILogger]: Start isEmpty. Operand 199 states and 202 transitions. [2019-05-23 11:17:12,815 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 194 [2019-05-23 11:17:12,815 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:12,815 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:12,815 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:12,816 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:12,816 INFO L146 ILogger]: Analyzing trace with hash -933548822, now seen corresponding path program 13 times [2019-05-23 11:17:12,816 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:12,816 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:12,817 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:12,817 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:12,817 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:12,835 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:13,428 INFO L146 ILogger]: Checked inductivity of 801 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2019-05-23 11:17:13,428 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:13,428 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:13,437 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:13,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:13,481 INFO L146 ILogger]: Trace formula consists of 300 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:17:13,483 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:13,569 INFO L146 ILogger]: Checked inductivity of 801 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2019-05-23 11:17:13,588 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:13,588 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:17:13,588 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:17:13,589 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:17:13,589 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:17:13,589 INFO L146 ILogger]: Start difference. First operand 199 states and 202 transitions. Second operand 33 states. [2019-05-23 11:17:14,150 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:14,150 INFO L146 ILogger]: Finished difference Result 302 states and 308 transitions. [2019-05-23 11:17:14,151 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:17:14,151 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 193 [2019-05-23 11:17:14,151 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:14,152 INFO L146 ILogger]: With dead ends: 302 [2019-05-23 11:17:14,152 INFO L146 ILogger]: Without dead ends: 211 [2019-05-23 11:17:14,153 INFO L146 ILogger]: 0 DeclaredPredicates, 251 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:17:14,153 INFO L146 ILogger]: Start minimizeSevpa. Operand 211 states. [2019-05-23 11:17:14,156 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 211 to 206. [2019-05-23 11:17:14,156 INFO L146 ILogger]: Start removeUnreachable. Operand 206 states. [2019-05-23 11:17:14,157 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 206 states to 206 states and 209 transitions. [2019-05-23 11:17:14,157 INFO L146 ILogger]: Start accepts. Automaton has 206 states and 209 transitions. Word has length 193 [2019-05-23 11:17:14,158 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:14,158 INFO L146 ILogger]: Abstraction has 206 states and 209 transitions. [2019-05-23 11:17:14,158 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:17:14,158 INFO L146 ILogger]: Start isEmpty. Operand 206 states and 209 transitions. [2019-05-23 11:17:14,159 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 201 [2019-05-23 11:17:14,159 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:14,159 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:14,159 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:14,160 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:14,160 INFO L146 ILogger]: Analyzing trace with hash -1770170153, now seen corresponding path program 14 times [2019-05-23 11:17:14,160 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:14,160 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:14,161 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,161 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:14,161 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,179 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,599 INFO L146 ILogger]: Checked inductivity of 900 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2019-05-23 11:17:14,600 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:14,600 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:14,608 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:14,655 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:14,655 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,656 INFO L146 ILogger]: Trace formula consists of 310 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:17:14,658 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:14,740 INFO L146 ILogger]: Checked inductivity of 900 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2019-05-23 11:17:14,758 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:14,758 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:17:14,758 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:17:14,759 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:17:14,759 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:14,759 INFO L146 ILogger]: Start difference. First operand 206 states and 209 transitions. Second operand 35 states. [2019-05-23 11:17:15,409 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:15,409 INFO L146 ILogger]: Finished difference Result 309 states and 315 transitions. [2019-05-23 11:17:15,415 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:17:15,415 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 200 [2019-05-23 11:17:15,415 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:15,416 INFO L146 ILogger]: With dead ends: 309 [2019-05-23 11:17:15,416 INFO L146 ILogger]: Without dead ends: 218 [2019-05-23 11:17:15,418 INFO L146 ILogger]: 0 DeclaredPredicates, 262 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:17:15,418 INFO L146 ILogger]: Start minimizeSevpa. Operand 218 states. [2019-05-23 11:17:15,421 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 218 to 213. [2019-05-23 11:17:15,421 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:17:15,422 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 216 transitions. [2019-05-23 11:17:15,422 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 216 transitions. Word has length 200 [2019-05-23 11:17:15,422 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:15,423 INFO L146 ILogger]: Abstraction has 213 states and 216 transitions. [2019-05-23 11:17:15,423 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:17:15,423 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 216 transitions. [2019-05-23 11:17:15,423 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 208 [2019-05-23 11:17:15,424 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:15,424 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:15,424 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:15,424 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:15,424 INFO L146 ILogger]: Analyzing trace with hash -65316790, now seen corresponding path program 15 times [2019-05-23 11:17:15,424 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:15,424 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:15,425 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:15,425 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:15,425 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:15,442 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:15,888 INFO L146 ILogger]: Checked inductivity of 1006 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2019-05-23 11:17:15,888 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:15,888 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:15,897 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:16,044 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:17:16,044 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:16,045 INFO L146 ILogger]: Trace formula consists of 210 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:17:16,048 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:16,508 INFO L146 ILogger]: Checked inductivity of 1006 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2019-05-23 11:17:16,526 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:16,527 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:17:16,527 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:17:16,527 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:17:16,528 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:17:16,528 INFO L146 ILogger]: Start difference. First operand 213 states and 216 transitions. Second operand 46 states. [2019-05-23 11:17:18,912 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:18,912 INFO L146 ILogger]: Finished difference Result 328 states and 335 transitions. [2019-05-23 11:17:18,912 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:17:18,913 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 207 [2019-05-23 11:17:18,913 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:18,914 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:17:18,914 INFO L146 ILogger]: Without dead ends: 237 [2019-05-23 11:17:18,916 INFO L146 ILogger]: 0 DeclaredPredicates, 283 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:17:18,916 INFO L146 ILogger]: Start minimizeSevpa. Operand 237 states. [2019-05-23 11:17:18,920 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 237 to 227. [2019-05-23 11:17:18,920 INFO L146 ILogger]: Start removeUnreachable. Operand 227 states. [2019-05-23 11:17:18,920 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 227 states to 227 states and 230 transitions. [2019-05-23 11:17:18,921 INFO L146 ILogger]: Start accepts. Automaton has 227 states and 230 transitions. Word has length 207 [2019-05-23 11:17:18,921 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:18,921 INFO L146 ILogger]: Abstraction has 227 states and 230 transitions. [2019-05-23 11:17:18,921 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:17:18,921 INFO L146 ILogger]: Start isEmpty. Operand 227 states and 230 transitions. [2019-05-23 11:17:18,932 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 222 [2019-05-23 11:17:18,933 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:18,933 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:18,934 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:18,934 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:18,934 INFO L146 ILogger]: Analyzing trace with hash -1019171860, now seen corresponding path program 16 times [2019-05-23 11:17:18,934 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:18,934 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:18,935 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:18,935 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:18,935 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:18,956 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:19,518 INFO L146 ILogger]: Checked inductivity of 1155 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2019-05-23 11:17:19,519 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:19,519 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:19,528 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:20,256 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:20,257 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:20,259 INFO L146 ILogger]: Trace formula consists of 340 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:17:20,263 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:20,353 INFO L146 ILogger]: Checked inductivity of 1155 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2019-05-23 11:17:20,383 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:20,383 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:17:20,384 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:17:20,384 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:17:20,385 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:17:20,385 INFO L146 ILogger]: Start difference. First operand 227 states and 230 transitions. Second operand 39 states. [2019-05-23 11:17:21,459 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:21,459 INFO L146 ILogger]: Finished difference Result 337 states and 343 transitions. [2019-05-23 11:17:21,460 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:17:21,460 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 221 [2019-05-23 11:17:21,460 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:21,461 INFO L146 ILogger]: With dead ends: 337 [2019-05-23 11:17:21,461 INFO L146 ILogger]: Without dead ends: 239 [2019-05-23 11:17:21,463 INFO L146 ILogger]: 0 DeclaredPredicates, 291 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:17:21,463 INFO L146 ILogger]: Start minimizeSevpa. Operand 239 states. [2019-05-23 11:17:21,466 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 239 to 234. [2019-05-23 11:17:21,467 INFO L146 ILogger]: Start removeUnreachable. Operand 234 states. [2019-05-23 11:17:21,467 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 234 states to 234 states and 237 transitions. [2019-05-23 11:17:21,467 INFO L146 ILogger]: Start accepts. Automaton has 234 states and 237 transitions. Word has length 221 [2019-05-23 11:17:21,468 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:21,468 INFO L146 ILogger]: Abstraction has 234 states and 237 transitions. [2019-05-23 11:17:21,468 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:17:21,468 INFO L146 ILogger]: Start isEmpty. Operand 234 states and 237 transitions. [2019-05-23 11:17:21,469 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 229 [2019-05-23 11:17:21,469 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:21,469 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:21,470 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:21,470 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:21,470 INFO L146 ILogger]: Analyzing trace with hash -1799691687, now seen corresponding path program 17 times [2019-05-23 11:17:21,470 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:21,470 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:21,471 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:21,471 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:21,471 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:21,491 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:22,043 INFO L146 ILogger]: Checked inductivity of 1275 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2019-05-23 11:17:22,044 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:22,044 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:22,054 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:28,923 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:17:28,924 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:28,931 INFO L146 ILogger]: Trace formula consists of 350 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:17:28,934 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:29,639 INFO L146 ILogger]: Checked inductivity of 1275 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2019-05-23 11:17:29,696 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:29,697 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:17:29,697 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:17:29,697 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:17:29,698 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:17:29,698 INFO L146 ILogger]: Start difference. First operand 234 states and 237 transitions. Second operand 41 states. [2019-05-23 11:17:30,742 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:30,742 INFO L146 ILogger]: Finished difference Result 344 states and 350 transitions. [2019-05-23 11:17:30,742 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:17:30,742 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 228 [2019-05-23 11:17:30,743 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:30,744 INFO L146 ILogger]: With dead ends: 344 [2019-05-23 11:17:30,744 INFO L146 ILogger]: Without dead ends: 246 [2019-05-23 11:17:30,746 INFO L146 ILogger]: 0 DeclaredPredicates, 302 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:17:30,746 INFO L146 ILogger]: Start minimizeSevpa. Operand 246 states. [2019-05-23 11:17:30,749 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 246 to 241. [2019-05-23 11:17:30,750 INFO L146 ILogger]: Start removeUnreachable. Operand 241 states. [2019-05-23 11:17:30,750 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 241 states to 241 states and 244 transitions. [2019-05-23 11:17:30,751 INFO L146 ILogger]: Start accepts. Automaton has 241 states and 244 transitions. Word has length 228 [2019-05-23 11:17:30,751 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:30,751 INFO L146 ILogger]: Abstraction has 241 states and 244 transitions. [2019-05-23 11:17:30,751 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:17:30,751 INFO L146 ILogger]: Start isEmpty. Operand 241 states and 244 transitions. [2019-05-23 11:17:30,752 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 236 [2019-05-23 11:17:30,752 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:30,753 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:30,753 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:30,753 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:30,753 INFO L146 ILogger]: Analyzing trace with hash -1067972788, now seen corresponding path program 18 times [2019-05-23 11:17:30,753 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:30,754 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:30,754 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:30,754 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:30,755 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:30,773 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:32,122 INFO L146 ILogger]: Checked inductivity of 1402 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2019-05-23 11:17:32,123 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:32,123 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:32,132 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:32,556 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:17:32,557 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:32,559 INFO L146 ILogger]: Trace formula consists of 260 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:17:32,562 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:32,987 INFO L146 ILogger]: Checked inductivity of 1402 backedges. 127 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2019-05-23 11:17:33,008 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:33,008 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 16] total 55 [2019-05-23 11:17:33,009 INFO L146 ILogger]: Interpolant automaton has 55 states [2019-05-23 11:17:33,009 INFO L146 ILogger]: Constructing interpolant automaton starting with 55 interpolants. [2019-05-23 11:17:33,011 INFO L146 ILogger]: CoverageRelationStatistics Valid=553, Invalid=2417, Unknown=0, NotChecked=0, Total=2970 [2019-05-23 11:17:33,011 INFO L146 ILogger]: Start difference. First operand 241 states and 244 transitions. Second operand 55 states. [2019-05-23 11:17:34,834 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-05-23 11:17:35,375 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:35,376 INFO L146 ILogger]: Finished difference Result 363 states and 370 transitions. [2019-05-23 11:17:35,376 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2019-05-23 11:17:35,376 INFO L146 ILogger]: Start accepts. Automaton has 55 states. Word has length 235 [2019-05-23 11:17:35,377 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:35,378 INFO L146 ILogger]: With dead ends: 363 [2019-05-23 11:17:35,378 INFO L146 ILogger]: Without dead ends: 265 [2019-05-23 11:17:35,379 INFO L146 ILogger]: 0 DeclaredPredicates, 333 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2464 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2586, Invalid=9846, Unknown=0, NotChecked=0, Total=12432 [2019-05-23 11:17:35,379 INFO L146 ILogger]: Start minimizeSevpa. Operand 265 states. [2019-05-23 11:17:35,383 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 265 to 255. [2019-05-23 11:17:35,383 INFO L146 ILogger]: Start removeUnreachable. Operand 255 states. [2019-05-23 11:17:35,384 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 255 states to 255 states and 258 transitions. [2019-05-23 11:17:35,384 INFO L146 ILogger]: Start accepts. Automaton has 255 states and 258 transitions. Word has length 235 [2019-05-23 11:17:35,384 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:35,384 INFO L146 ILogger]: Abstraction has 255 states and 258 transitions. [2019-05-23 11:17:35,385 INFO L146 ILogger]: Interpolant automaton has 55 states. [2019-05-23 11:17:35,385 INFO L146 ILogger]: Start isEmpty. Operand 255 states and 258 transitions. [2019-05-23 11:17:35,386 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 250 [2019-05-23 11:17:35,386 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:35,386 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:35,386 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:35,386 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:35,386 INFO L146 ILogger]: Analyzing trace with hash -1519643101, now seen corresponding path program 19 times [2019-05-23 11:17:35,387 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:35,387 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:35,387 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:35,387 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:35,387 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:35,407 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:36,189 INFO L146 ILogger]: Checked inductivity of 1572 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:36,190 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:36,190 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:36,198 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:36,258 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:36,259 INFO L146 ILogger]: Trace formula consists of 380 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:17:36,262 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:36,346 INFO L146 ILogger]: Checked inductivity of 1572 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:36,364 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:36,364 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:17:36,365 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:17:36,365 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:17:36,365 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:17:36,365 INFO L146 ILogger]: Start difference. First operand 255 states and 258 transitions. Second operand 45 states. [2019-05-23 11:17:37,583 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:37,583 INFO L146 ILogger]: Finished difference Result 372 states and 378 transitions. [2019-05-23 11:17:37,589 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:17:37,589 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 249 [2019-05-23 11:17:37,590 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:37,591 INFO L146 ILogger]: With dead ends: 372 [2019-05-23 11:17:37,591 INFO L146 ILogger]: Without dead ends: 267 [2019-05-23 11:17:37,592 INFO L146 ILogger]: 0 DeclaredPredicates, 331 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:17:37,592 INFO L146 ILogger]: Start minimizeSevpa. Operand 267 states. [2019-05-23 11:17:37,596 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 267 to 262. [2019-05-23 11:17:37,596 INFO L146 ILogger]: Start removeUnreachable. Operand 262 states. [2019-05-23 11:17:37,597 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 262 states to 262 states and 265 transitions. [2019-05-23 11:17:37,597 INFO L146 ILogger]: Start accepts. Automaton has 262 states and 265 transitions. Word has length 249 [2019-05-23 11:17:37,598 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:37,598 INFO L146 ILogger]: Abstraction has 262 states and 265 transitions. [2019-05-23 11:17:37,598 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:17:37,598 INFO L146 ILogger]: Start isEmpty. Operand 262 states and 265 transitions. [2019-05-23 11:17:37,599 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 257 [2019-05-23 11:17:37,599 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:37,600 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:37,600 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:37,600 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:37,600 INFO L146 ILogger]: Analyzing trace with hash 1293784848, now seen corresponding path program 20 times [2019-05-23 11:17:37,600 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:37,601 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:37,601 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:37,601 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:37,601 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:37,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:38,802 INFO L146 ILogger]: Checked inductivity of 1713 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:38,802 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:38,802 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:38,811 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:38,868 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:38,868 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:38,870 INFO L146 ILogger]: Trace formula consists of 390 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:17:38,873 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:38,966 INFO L146 ILogger]: Checked inductivity of 1713 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:38,985 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:38,986 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:17:38,986 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:17:38,986 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:17:38,987 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:17:38,987 INFO L146 ILogger]: Start difference. First operand 262 states and 265 transitions. Second operand 47 states. [2019-05-23 11:17:41,084 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:41,084 INFO L146 ILogger]: Finished difference Result 379 states and 385 transitions. [2019-05-23 11:17:41,085 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:17:41,085 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 256 [2019-05-23 11:17:41,085 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:41,087 INFO L146 ILogger]: With dead ends: 379 [2019-05-23 11:17:41,087 INFO L146 ILogger]: Without dead ends: 274 [2019-05-23 11:17:41,088 INFO L146 ILogger]: 0 DeclaredPredicates, 342 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:17:41,088 INFO L146 ILogger]: Start minimizeSevpa. Operand 274 states. [2019-05-23 11:17:41,092 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 274 to 269. [2019-05-23 11:17:41,092 INFO L146 ILogger]: Start removeUnreachable. Operand 269 states. [2019-05-23 11:17:41,093 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 269 states to 269 states and 272 transitions. [2019-05-23 11:17:41,093 INFO L146 ILogger]: Start accepts. Automaton has 269 states and 272 transitions. Word has length 256 [2019-05-23 11:17:41,093 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:41,093 INFO L146 ILogger]: Abstraction has 269 states and 272 transitions. [2019-05-23 11:17:41,094 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:17:41,094 INFO L146 ILogger]: Start isEmpty. Operand 269 states and 272 transitions. [2019-05-23 11:17:41,095 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 264 [2019-05-23 11:17:41,095 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:41,095 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:41,096 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:41,096 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:41,096 INFO L146 ILogger]: Analyzing trace with hash -1909284477, now seen corresponding path program 21 times [2019-05-23 11:17:41,096 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:41,096 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:41,097 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:41,097 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:41,097 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:41,118 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:43,199 INFO L146 ILogger]: Checked inductivity of 1861 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:43,199 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:43,199 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:43,207 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:43,406 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:17:43,406 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:43,408 INFO L146 ILogger]: Trace formula consists of 240 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:17:43,410 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:43,792 INFO L146 ILogger]: Checked inductivity of 1861 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1750 trivial. 0 not checked. [2019-05-23 11:17:43,812 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:43,812 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 15] total 60 [2019-05-23 11:17:43,813 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:17:43,813 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:17:43,813 INFO L146 ILogger]: CoverageRelationStatistics Valid=637, Invalid=2903, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:17:43,814 INFO L146 ILogger]: Start difference. First operand 269 states and 272 transitions. Second operand 60 states. [2019-05-23 11:17:45,979 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:45,980 INFO L146 ILogger]: Finished difference Result 398 states and 405 transitions. [2019-05-23 11:17:45,980 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-05-23 11:17:45,980 INFO L146 ILogger]: Start accepts. Automaton has 60 states. Word has length 263 [2019-05-23 11:17:45,981 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:45,982 INFO L146 ILogger]: With dead ends: 398 [2019-05-23 11:17:45,982 INFO L146 ILogger]: Without dead ends: 293 [2019-05-23 11:17:45,984 INFO L146 ILogger]: 0 DeclaredPredicates, 365 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2591 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2885, Invalid=10455, Unknown=0, NotChecked=0, Total=13340 [2019-05-23 11:17:45,984 INFO L146 ILogger]: Start minimizeSevpa. Operand 293 states. [2019-05-23 11:17:45,988 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 293 to 283. [2019-05-23 11:17:45,988 INFO L146 ILogger]: Start removeUnreachable. Operand 283 states. [2019-05-23 11:17:45,989 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 283 states to 283 states and 286 transitions. [2019-05-23 11:17:45,989 INFO L146 ILogger]: Start accepts. Automaton has 283 states and 286 transitions. Word has length 263 [2019-05-23 11:17:45,989 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:45,989 INFO L146 ILogger]: Abstraction has 283 states and 286 transitions. [2019-05-23 11:17:45,990 INFO L146 ILogger]: Interpolant automaton has 60 states. [2019-05-23 11:17:45,990 INFO L146 ILogger]: Start isEmpty. Operand 283 states and 286 transitions. [2019-05-23 11:17:45,991 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 278 [2019-05-23 11:17:45,991 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:45,991 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:45,992 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:45,992 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:45,992 INFO L146 ILogger]: Analyzing trace with hash 1594603941, now seen corresponding path program 22 times [2019-05-23 11:17:45,992 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:45,992 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:45,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:45,993 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:45,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:46,017 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,301 INFO L146 ILogger]: Checked inductivity of 2059 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2019-05-23 11:17:48,302 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:48,302 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:48,310 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:49,391 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:49,391 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,394 INFO L146 ILogger]: Trace formula consists of 420 conjuncts, 48 conjunts are in the unsatisfiable core [2019-05-23 11:17:49,397 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:49,605 INFO L146 ILogger]: Checked inductivity of 2059 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2019-05-23 11:17:49,634 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:49,634 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-05-23 11:17:49,634 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:17:49,635 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:17:49,635 INFO L146 ILogger]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:17:49,635 INFO L146 ILogger]: Start difference. First operand 283 states and 286 transitions. Second operand 51 states. [2019-05-23 11:17:50,961 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:50,961 INFO L146 ILogger]: Finished difference Result 407 states and 413 transitions. [2019-05-23 11:17:50,961 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-05-23 11:17:50,961 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 277 [2019-05-23 11:17:50,962 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:50,962 INFO L146 ILogger]: With dead ends: 407 [2019-05-23 11:17:50,963 INFO L146 ILogger]: Without dead ends: 295 [2019-05-23 11:17:50,968 INFO L146 ILogger]: 0 DeclaredPredicates, 371 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:17:50,968 INFO L146 ILogger]: Start minimizeSevpa. Operand 295 states. [2019-05-23 11:17:50,972 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 295 to 290. [2019-05-23 11:17:50,972 INFO L146 ILogger]: Start removeUnreachable. Operand 290 states. [2019-05-23 11:17:50,973 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 290 states to 290 states and 293 transitions. [2019-05-23 11:17:50,973 INFO L146 ILogger]: Start accepts. Automaton has 290 states and 293 transitions. Word has length 277 [2019-05-23 11:17:50,974 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:50,974 INFO L146 ILogger]: Abstraction has 290 states and 293 transitions. [2019-05-23 11:17:50,974 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:17:50,974 INFO L146 ILogger]: Start isEmpty. Operand 290 states and 293 transitions. [2019-05-23 11:17:50,975 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 285 [2019-05-23 11:17:50,975 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:50,975 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:50,976 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:50,976 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:50,976 INFO L146 ILogger]: Analyzing trace with hash -1267481326, now seen corresponding path program 23 times [2019-05-23 11:17:50,976 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:50,976 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:50,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:50,977 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:50,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:51,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:52,155 INFO L146 ILogger]: Checked inductivity of 2221 backedges. 0 proven. 1956 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2019-05-23 11:17:52,156 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:52,156 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:52,165 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1