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/reducercommutativity/avg40_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:23:02,489 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:23:02,491 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:23:02,507 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:23:02,507 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:23:02,509 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:23:02,511 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:23:02,514 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:23:02,516 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:23:02,517 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:23:02,525 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:23:02,526 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:23:02,527 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:23:02,528 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:23:02,531 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:23:02,533 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:23:02,534 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:23:02,540 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:23:02,541 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:23:02,543 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:23:02,544 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:23:02,546 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:23:02,548 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:23:02,548 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:23:02,548 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:23:02,552 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:23:02,553 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:23:02,554 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:23:02,554 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:23:02,555 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:23:02,556 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:23:02,557 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:23:02,558 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:23:02,558 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:23:02,559 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:23:02,559 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:23:02,559 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:23:02,560 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:23:02,561 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:23:02,561 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:23:02,575 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:23:02,576 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:23:02,577 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:23:02,577 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:23:02,577 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:23:02,577 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:23:02,578 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:23:02,578 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:23:02,578 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:23:02,578 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:23:02,578 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:23:02,579 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:23:02,579 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:23:02,579 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:23:02,579 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:23:02,579 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:23:02,580 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:23:02,580 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:23:02,580 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:23:02,580 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:23:02,580 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:23:02,581 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:23:02,581 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:23:02,581 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:23:02,581 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:23:02,581 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:23:02,582 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:23:02,582 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:23:02,582 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 11:23:02,619 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:23:02,631 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:23:02,635 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:23:02,636 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:23:02,636 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:23:02,637 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/avg40_true-unreach-call.i [2019-05-23 11:23:02,696 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34792f713/19c5418557ee43e7a60e2fb9ed1c0251/FLAGca70c51da [2019-05-23 11:23:03,125 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:23:03,126 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/avg40_true-unreach-call.i [2019-05-23 11:23:03,133 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34792f713/19c5418557ee43e7a60e2fb9ed1c0251/FLAGca70c51da [2019-05-23 11:23:03,492 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34792f713/19c5418557ee43e7a60e2fb9ed1c0251 [2019-05-23 11:23:03,501 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:23:03,502 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:23:03,503 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:03,503 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:23:03,507 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:23:03,508 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,512 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638030e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03, skipping insertion in model container [2019-05-23 11:23:03,512 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,520 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:23:03,545 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:23:03,789 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:03,805 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:23:03,834 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:03,855 INFO L146 ILogger]: Completed translation [2019-05-23 11:23:03,856 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03 WrapperNode [2019-05-23 11:23:03,856 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:03,857 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:03,858 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:23:03,858 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:23:03,867 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,877 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,921 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:03,924 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:23:03,924 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:23:03,924 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:23:03,936 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,937 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,948 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,948 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:04,046 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:04,052 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:04,055 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:04,063 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:23:04,063 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:23:04,063 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:23:04,063 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:23:04,064 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (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 11:23:04,123 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:23:04,124 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:23:04,124 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:23:04,124 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:23:04,124 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:23:04,124 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:23:04,717 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:23:04,717 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:23:04,718 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:04 BoogieIcfgContainer [2019-05-23 11:23:04,719 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:23:04,719 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:23:04,720 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:23:04,723 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:23:04,723 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:23:03" (1/3) ... [2019-05-23 11:23:04,724 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e16adea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:04, skipping insertion in model container [2019-05-23 11:23:04,724 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (2/3) ... [2019-05-23 11:23:04,725 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e16adea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:04, skipping insertion in model container [2019-05-23 11:23:04,725 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:04" (3/3) ... [2019-05-23 11:23:04,727 INFO L146 ILogger]: Analyzing ICFG avg40_true-unreach-call.i [2019-05-23 11:23:04,736 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:23:04,745 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:23:04,762 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:23:04,797 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:23:04,798 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:23:04,798 INFO L146 ILogger]: Hoare is true [2019-05-23 11:23:04,798 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:23:04,798 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:23:04,799 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:23:04,799 INFO L146 ILogger]: Difference is false [2019-05-23 11:23:04,799 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:23:04,799 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:23:04,818 INFO L146 ILogger]: Start isEmpty. Operand 105 states. [2019-05-23 11:23:04,827 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:23:04,827 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:04,829 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:04,831 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:04,837 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:04,837 INFO L146 ILogger]: Analyzing trace with hash -503519154, now seen corresponding path program 1 times [2019-05-23 11:23:04,838 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:04,839 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:04,887 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:04,888 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:04,888 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:04,941 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,053 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 11:23:05,056 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:23:05,057 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:23:05,060 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:23:05,074 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:23:05,075 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:23:05,078 INFO L146 ILogger]: Start difference. First operand 105 states. Second operand 3 states. [2019-05-23 11:23:05,188 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:05,189 INFO L146 ILogger]: Finished difference Result 199 states and 219 transitions. [2019-05-23 11:23:05,190 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:23:05,191 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 68 [2019-05-23 11:23:05,192 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:05,204 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:23:05,204 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:23:05,208 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 11:23:05,228 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:23:05,251 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-05-23 11:23:05,253 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:23:05,255 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2019-05-23 11:23:05,257 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 68 [2019-05-23 11:23:05,257 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:05,258 INFO L146 ILogger]: Abstraction has 100 states and 104 transitions. [2019-05-23 11:23:05,258 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:23:05,258 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 104 transitions. [2019-05-23 11:23:05,261 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:23:05,261 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:05,261 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:05,262 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:05,262 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:05,262 INFO L146 ILogger]: Analyzing trace with hash -1483383517, now seen corresponding path program 1 times [2019-05-23 11:23:05,263 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:05,263 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:05,264 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:05,264 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:05,264 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:05,312 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,468 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 11:23:05,469 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:05,469 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:23:05,485 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:05,528 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,530 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:23:05,541 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:05,593 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 11:23:05,622 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:05,622 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:23:05,624 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:23:05,624 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:23:05,624 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:23:05,625 INFO L146 ILogger]: Start difference. First operand 100 states and 104 transitions. Second operand 6 states. [2019-05-23 11:23:06,140 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:06,140 INFO L146 ILogger]: Finished difference Result 212 states and 223 transitions. [2019-05-23 11:23:06,141 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:23:06,142 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 75 [2019-05-23 11:23:06,142 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:06,143 INFO L146 ILogger]: With dead ends: 212 [2019-05-23 11:23:06,144 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:23:06,145 INFO L146 ILogger]: 0 DeclaredPredicates, 81 GetRequests, 75 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 11:23:06,146 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:23:06,154 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 110. [2019-05-23 11:23:06,155 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:23:06,156 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2019-05-23 11:23:06,157 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 75 [2019-05-23 11:23:06,157 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:06,157 INFO L146 ILogger]: Abstraction has 110 states and 114 transitions. [2019-05-23 11:23:06,157 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:23:06,157 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 114 transitions. [2019-05-23 11:23:06,160 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:23:06,160 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:06,161 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:06,161 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:06,161 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:06,162 INFO L146 ILogger]: Analyzing trace with hash -483601032, now seen corresponding path program 1 times [2019-05-23 11:23:06,162 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:06,162 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:06,163 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:06,163 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:06,163 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:06,186 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:06,269 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:23:06,269 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:06,270 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 11:23:06,285 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:06,337 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:06,338 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:23:06,345 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:06,401 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:23:06,422 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:06,422 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:23:06,423 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:23:06,423 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:23:06,424 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:23:06,424 INFO L146 ILogger]: Start difference. First operand 110 states and 114 transitions. Second operand 6 states. [2019-05-23 11:23:06,937 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:06,938 INFO L146 ILogger]: Finished difference Result 221 states and 231 transitions. [2019-05-23 11:23:06,944 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:23:06,944 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 103 [2019-05-23 11:23:06,945 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:06,946 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:23:06,946 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:23:06,949 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:23:06,951 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:23:06,960 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 132. [2019-05-23 11:23:06,961 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:23:06,962 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2019-05-23 11:23:06,962 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 103 [2019-05-23 11:23:06,963 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:06,963 INFO L146 ILogger]: Abstraction has 132 states and 136 transitions. [2019-05-23 11:23:06,963 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:23:06,963 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 136 transitions. [2019-05-23 11:23:06,965 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:23:06,966 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:06,966 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:06,966 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:06,967 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:06,967 INFO L146 ILogger]: Analyzing trace with hash 46998236, now seen corresponding path program 1 times [2019-05-23 11:23:06,967 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:06,967 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:06,968 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:06,968 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:06,969 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:07,006 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:07,131 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:23:07,131 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:07,131 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 11:23:07,145 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:07,203 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:07,205 INFO L146 ILogger]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:07,211 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:07,541 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:23:07,560 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:07,560 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:23:07,561 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:23:07,561 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:23:07,561 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:23:07,562 INFO L146 ILogger]: Start difference. First operand 132 states and 136 transitions. Second operand 10 states. [2019-05-23 11:23:08,166 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:08,166 INFO L146 ILogger]: Finished difference Result 263 states and 272 transitions. [2019-05-23 11:23:08,166 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:23:08,167 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 131 [2019-05-23 11:23:08,167 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:08,168 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:23:08,168 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:23:08,169 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:23:08,170 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:23:08,179 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 146. [2019-05-23 11:23:08,179 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:23:08,180 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2019-05-23 11:23:08,181 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 131 [2019-05-23 11:23:08,181 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:08,181 INFO L146 ILogger]: Abstraction has 146 states and 150 transitions. [2019-05-23 11:23:08,181 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:23:08,182 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 150 transitions. [2019-05-23 11:23:08,184 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:23:08,184 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:08,184 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:08,185 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:08,185 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:08,185 INFO L146 ILogger]: Analyzing trace with hash -1200733213, now seen corresponding path program 2 times [2019-05-23 11:23:08,185 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:08,185 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:08,186 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:08,187 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:08,187 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:08,255 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:08,507 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:23:08,508 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:08,508 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 11:23:08,518 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:08,585 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:08,585 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:08,587 INFO L146 ILogger]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:08,592 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:08,818 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:23:08,838 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:08,839 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:23:08,839 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:23:08,839 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:23:08,840 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:23:08,840 INFO L146 ILogger]: Start difference. First operand 146 states and 150 transitions. Second operand 11 states. [2019-05-23 11:23:09,023 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:09,023 INFO L146 ILogger]: Finished difference Result 272 states and 280 transitions. [2019-05-23 11:23:09,032 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:23:09,032 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 145 [2019-05-23 11:23:09,032 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:09,033 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:23:09,034 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:23:09,038 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:23:09,039 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:23:09,057 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 153. [2019-05-23 11:23:09,057 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:23:09,061 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2019-05-23 11:23:09,062 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 145 [2019-05-23 11:23:09,062 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:09,062 INFO L146 ILogger]: Abstraction has 153 states and 157 transitions. [2019-05-23 11:23:09,063 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:23:09,066 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 157 transitions. [2019-05-23 11:23:09,068 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:23:09,069 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:09,071 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:09,071 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:09,071 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:09,072 INFO L146 ILogger]: Analyzing trace with hash 104748121, now seen corresponding path program 3 times [2019-05-23 11:23:09,072 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:09,072 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:09,073 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:09,073 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:09,073 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:09,139 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:09,348 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:23:09,349 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:09,349 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 11:23:09,358 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:09,403 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:23:09,404 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:09,405 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:09,411 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:09,562 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:23:09,582 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:09,582 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:23:09,583 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:23:09,583 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:23:09,584 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:23:09,584 INFO L146 ILogger]: Start difference. First operand 153 states and 157 transitions. Second operand 16 states. [2019-05-23 11:23:10,097 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:10,098 INFO L146 ILogger]: Finished difference Result 315 states and 326 transitions. [2019-05-23 11:23:10,098 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:23:10,098 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 152 [2019-05-23 11:23:10,099 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:10,101 INFO L146 ILogger]: With dead ends: 315 [2019-05-23 11:23:10,101 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:23:10,103 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:23:10,103 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:23:10,109 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 181. [2019-05-23 11:23:10,110 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:23:10,110 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2019-05-23 11:23:10,111 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 152 [2019-05-23 11:23:10,111 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:10,111 INFO L146 ILogger]: Abstraction has 181 states and 185 transitions. [2019-05-23 11:23:10,111 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:23:10,111 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 185 transitions. [2019-05-23 11:23:10,118 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:23:10,118 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:10,118 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:10,119 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:10,119 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:10,119 INFO L146 ILogger]: Analyzing trace with hash -9292050, now seen corresponding path program 4 times [2019-05-23 11:23:10,119 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:10,119 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:10,120 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:10,120 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:10,120 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:10,148 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:10,351 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:23:10,352 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:10,352 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 11:23:10,361 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:10,416 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:10,416 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:10,417 INFO L146 ILogger]: Trace formula consists of 292 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:10,420 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:10,474 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:23:10,493 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:10,493 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:23:10,493 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:23:10,494 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:23:10,494 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:23:10,494 INFO L146 ILogger]: Start difference. First operand 181 states and 185 transitions. Second operand 15 states. [2019-05-23 11:23:10,738 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:10,738 INFO L146 ILogger]: Finished difference Result 328 states and 336 transitions. [2019-05-23 11:23:10,741 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:23:10,741 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 180 [2019-05-23 11:23:10,742 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:10,743 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:23:10,743 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:23:10,744 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:23:10,744 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:23:10,749 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-05-23 11:23:10,749 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:23:10,750 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2019-05-23 11:23:10,750 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 180 [2019-05-23 11:23:10,750 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:10,750 INFO L146 ILogger]: Abstraction has 188 states and 192 transitions. [2019-05-23 11:23:10,750 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:23:10,751 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 192 transitions. [2019-05-23 11:23:10,753 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 188 [2019-05-23 11:23:10,753 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:10,753 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:10,754 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:10,754 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:10,754 INFO L146 ILogger]: Analyzing trace with hash -397663560, now seen corresponding path program 5 times [2019-05-23 11:23:10,754 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:10,754 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:10,755 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:10,755 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:10,756 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:10,782 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:11,025 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:23:11,026 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:11,026 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 11:23:11,036 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:11,107 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:23:11,107 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:11,109 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:11,111 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:11,366 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-05-23 11:23:11,386 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:11,387 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:23:11,387 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:23:11,387 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:23:11,388 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:23:11,388 INFO L146 ILogger]: Start difference. First operand 188 states and 192 transitions. Second operand 22 states. [2019-05-23 11:23:12,244 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:12,245 INFO L146 ILogger]: Finished difference Result 371 states and 382 transitions. [2019-05-23 11:23:12,245 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:12,245 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 187 [2019-05-23 11:23:12,246 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:12,247 INFO L146 ILogger]: With dead ends: 371 [2019-05-23 11:23:12,247 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:23:12,249 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 181 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 11:23:12,250 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:23:12,254 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 216. [2019-05-23 11:23:12,255 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:23:12,256 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2019-05-23 11:23:12,256 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 187 [2019-05-23 11:23:12,256 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:12,256 INFO L146 ILogger]: Abstraction has 216 states and 220 transitions. [2019-05-23 11:23:12,257 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:23:12,257 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 220 transitions. [2019-05-23 11:23:12,260 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:23:12,261 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:12,261 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:12,261 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:12,261 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:12,265 INFO L146 ILogger]: Analyzing trace with hash 1152254147, now seen corresponding path program 6 times [2019-05-23 11:23:12,265 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:12,265 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:12,266 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:12,266 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:12,266 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:12,292 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:12,535 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-05-23 11:23:12,535 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:12,535 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 11:23:12,545 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:12,616 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:23:12,616 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:12,617 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:12,620 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:12,814 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2019-05-23 11:23:12,834 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:12,835 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:23:12,835 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:23:12,836 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:23:12,836 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:23:12,836 INFO L146 ILogger]: Start difference. First operand 216 states and 220 transitions. Second operand 22 states. [2019-05-23 11:23:13,478 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:13,479 INFO L146 ILogger]: Finished difference Result 396 states and 405 transitions. [2019-05-23 11:23:13,480 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:13,481 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:23:13,481 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:13,482 INFO L146 ILogger]: With dead ends: 396 [2019-05-23 11:23:13,482 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:23:13,484 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:23:13,484 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:23:13,489 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 230. [2019-05-23 11:23:13,489 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:23:13,490 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2019-05-23 11:23:13,490 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 215 [2019-05-23 11:23:13,490 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:13,490 INFO L146 ILogger]: Abstraction has 230 states and 234 transitions. [2019-05-23 11:23:13,490 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:23:13,491 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 234 transitions. [2019-05-23 11:23:13,493 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:23:13,493 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:13,493 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:13,494 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:13,494 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:13,494 INFO L146 ILogger]: Analyzing trace with hash 1030812380, now seen corresponding path program 7 times [2019-05-23 11:23:13,494 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:13,494 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:13,495 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:13,495 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:13,495 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:13,521 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:14,660 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:23:14,660 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:14,661 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 11:23:14,670 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:14,723 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:14,725 INFO L146 ILogger]: Trace formula consists of 365 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:23:14,728 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:14,810 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:23:14,840 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:14,840 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:23:14,841 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:23:14,842 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:23:14,842 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:23:14,842 INFO L146 ILogger]: Start difference. First operand 230 states and 234 transitions. Second operand 21 states. [2019-05-23 11:23:15,597 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:15,597 INFO L146 ILogger]: Finished difference Result 405 states and 413 transitions. [2019-05-23 11:23:15,600 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:23:15,600 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 229 [2019-05-23 11:23:15,600 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:15,602 INFO L146 ILogger]: With dead ends: 405 [2019-05-23 11:23:15,602 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:23:15,604 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:15,605 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:23:15,610 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 237. [2019-05-23 11:23:15,610 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:23:15,611 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2019-05-23 11:23:15,611 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 229 [2019-05-23 11:23:15,615 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:15,615 INFO L146 ILogger]: Abstraction has 237 states and 241 transitions. [2019-05-23 11:23:15,615 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:23:15,616 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 241 transitions. [2019-05-23 11:23:15,617 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 237 [2019-05-23 11:23:15,617 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:15,617 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:15,618 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:15,619 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:15,619 INFO L146 ILogger]: Analyzing trace with hash -1860993966, now seen corresponding path program 8 times [2019-05-23 11:23:15,619 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:15,619 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:15,620 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:15,620 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:15,620 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:15,652 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:15,922 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:23:15,922 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:15,922 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 11:23:15,930 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:16,008 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:16,008 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:16,010 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:23:16,014 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:16,123 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:23:16,143 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:16,143 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:23:16,143 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:23:16,144 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:23:16,144 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:23:16,144 INFO L146 ILogger]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2019-05-23 11:23:16,487 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:16,488 INFO L146 ILogger]: Finished difference Result 412 states and 420 transitions. [2019-05-23 11:23:16,489 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:23:16,489 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 236 [2019-05-23 11:23:16,489 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:16,490 INFO L146 ILogger]: With dead ends: 412 [2019-05-23 11:23:16,490 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:23:16,492 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:23:16,492 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:23:16,496 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 244. [2019-05-23 11:23:16,496 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:23:16,497 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2019-05-23 11:23:16,497 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 236 [2019-05-23 11:23:16,498 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:16,498 INFO L146 ILogger]: Abstraction has 244 states and 248 transitions. [2019-05-23 11:23:16,498 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:23:16,498 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 248 transitions. [2019-05-23 11:23:16,500 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 244 [2019-05-23 11:23:16,500 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:16,501 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:16,501 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:16,501 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:16,501 INFO L146 ILogger]: Analyzing trace with hash -1509981668, now seen corresponding path program 9 times [2019-05-23 11:23:16,502 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:16,502 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:16,502 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:16,503 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:16,503 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:16,539 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:17,622 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:23:17,622 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:17,622 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 11:23:17,632 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:17,716 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:23:17,717 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:17,718 INFO L146 ILogger]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:17,721 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:17,869 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-05-23 11:23:17,889 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:17,889 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-05-23 11:23:17,890 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:23:17,890 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:23:17,890 INFO L146 ILogger]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:23:17,891 INFO L146 ILogger]: Start difference. First operand 244 states and 248 transitions. Second operand 30 states. [2019-05-23 11:23:18,659 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:18,659 INFO L146 ILogger]: Finished difference Result 431 states and 440 transitions. [2019-05-23 11:23:18,660 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:23:18,660 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 243 [2019-05-23 11:23:18,660 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:18,662 INFO L146 ILogger]: With dead ends: 431 [2019-05-23 11:23:18,662 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:23:18,663 INFO L146 ILogger]: 0 DeclaredPredicates, 291 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:23:18,664 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:23:18,668 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 258. [2019-05-23 11:23:18,668 INFO L146 ILogger]: Start removeUnreachable. Operand 258 states. [2019-05-23 11:23:18,669 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 258 states to 258 states and 262 transitions. [2019-05-23 11:23:18,669 INFO L146 ILogger]: Start accepts. Automaton has 258 states and 262 transitions. Word has length 243 [2019-05-23 11:23:18,670 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:18,670 INFO L146 ILogger]: Abstraction has 258 states and 262 transitions. [2019-05-23 11:23:18,670 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:23:18,670 INFO L146 ILogger]: Start isEmpty. Operand 258 states and 262 transitions. [2019-05-23 11:23:18,671 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 258 [2019-05-23 11:23:18,671 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:18,672 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:18,672 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:18,672 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:18,673 INFO L146 ILogger]: Analyzing trace with hash -64980893, now seen corresponding path program 10 times [2019-05-23 11:23:18,673 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:18,673 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:18,673 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:18,674 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:18,674 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:18,697 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:19,125 INFO L146 ILogger]: Checked inductivity of 580 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:23:19,125 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:19,125 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 11:23:19,135 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:19,228 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:19,228 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:19,229 INFO L146 ILogger]: Trace formula consists of 405 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:23:19,232 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:19,325 INFO L146 ILogger]: Checked inductivity of 580 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:23:19,346 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:19,346 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:23:19,347 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:23:19,347 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:23:19,347 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:23:19,348 INFO L146 ILogger]: Start difference. First operand 258 states and 262 transitions. Second operand 27 states. [2019-05-23 11:23:20,285 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:20,286 INFO L146 ILogger]: Finished difference Result 440 states and 448 transitions. [2019-05-23 11:23:20,287 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:23:20,287 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 257 [2019-05-23 11:23:20,287 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:20,288 INFO L146 ILogger]: With dead ends: 440 [2019-05-23 11:23:20,288 INFO L146 ILogger]: Without dead ends: 270 [2019-05-23 11:23:20,289 INFO L146 ILogger]: 0 DeclaredPredicates, 303 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:23:20,290 INFO L146 ILogger]: Start minimizeSevpa. Operand 270 states. [2019-05-23 11:23:20,294 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 270 to 265. [2019-05-23 11:23:20,294 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:23:20,295 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 269 transitions. [2019-05-23 11:23:20,295 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 269 transitions. Word has length 257 [2019-05-23 11:23:20,295 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:20,295 INFO L146 ILogger]: Abstraction has 265 states and 269 transitions. [2019-05-23 11:23:20,295 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:23:20,296 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 269 transitions. [2019-05-23 11:23:20,297 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 265 [2019-05-23 11:23:20,297 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:20,297 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:20,298 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:20,298 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:20,298 INFO L146 ILogger]: Analyzing trace with hash 887018713, now seen corresponding path program 11 times [2019-05-23 11:23:20,298 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:20,298 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:20,299 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:20,299 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:20,299 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:20,323 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:20,660 INFO L146 ILogger]: Checked inductivity of 658 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:23:20,660 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:20,661 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 11:23:20,669 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:21,009 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:23:21,009 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:21,010 INFO L146 ILogger]: Trace formula consists of 415 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:23:21,014 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:21,261 INFO L146 ILogger]: Checked inductivity of 658 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2019-05-23 11:23:21,280 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:21,280 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2019-05-23 11:23:21,280 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:23:21,281 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:23:21,281 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:23:21,281 INFO L146 ILogger]: Start difference. First operand 265 states and 269 transitions. Second operand 36 states. [2019-05-23 11:23:22,768 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:22,769 INFO L146 ILogger]: Finished difference Result 483 states and 494 transitions. [2019-05-23 11:23:22,769 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:23:22,769 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 264 [2019-05-23 11:23:22,770 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:22,772 INFO L146 ILogger]: With dead ends: 483 [2019-05-23 11:23:22,772 INFO L146 ILogger]: Without dead ends: 313 [2019-05-23 11:23:22,774 INFO L146 ILogger]: 0 DeclaredPredicates, 322 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:23:22,775 INFO L146 ILogger]: Start minimizeSevpa. Operand 313 states. [2019-05-23 11:23:22,779 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 313 to 293. [2019-05-23 11:23:22,779 INFO L146 ILogger]: Start removeUnreachable. Operand 293 states. [2019-05-23 11:23:22,780 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2019-05-23 11:23:22,780 INFO L146 ILogger]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 264 [2019-05-23 11:23:22,781 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:22,781 INFO L146 ILogger]: Abstraction has 293 states and 297 transitions. [2019-05-23 11:23:22,781 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:23:22,781 INFO L146 ILogger]: Start isEmpty. Operand 293 states and 297 transitions. [2019-05-23 11:23:22,782 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 293 [2019-05-23 11:23:22,783 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:22,783 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:22,783 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:22,783 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:22,784 INFO L146 ILogger]: Analyzing trace with hash -499990866, now seen corresponding path program 12 times [2019-05-23 11:23:22,784 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:22,784 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:22,784 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:22,785 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:22,785 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:22,809 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:24,048 INFO L146 ILogger]: Checked inductivity of 830 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-05-23 11:23:24,048 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:24,048 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 11:23:24,060 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:24,282 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:23:24,282 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:24,284 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:24,288 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:24,485 INFO L146 ILogger]: Checked inductivity of 830 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2019-05-23 11:23:24,505 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:24,505 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 38 [2019-05-23 11:23:24,506 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:23:24,506 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:23:24,507 INFO L146 ILogger]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:23:24,507 INFO L146 ILogger]: Start difference. First operand 293 states and 297 transitions. Second operand 38 states. [2019-05-23 11:23:25,831 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:25,832 INFO L146 ILogger]: Finished difference Result 508 states and 517 transitions. [2019-05-23 11:23:25,838 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:23:25,838 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 292 [2019-05-23 11:23:25,838 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:25,840 INFO L146 ILogger]: With dead ends: 508 [2019-05-23 11:23:25,840 INFO L146 ILogger]: Without dead ends: 317 [2019-05-23 11:23:25,842 INFO L146 ILogger]: 0 DeclaredPredicates, 354 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1100, Invalid=4012, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:23:25,843 INFO L146 ILogger]: Start minimizeSevpa. Operand 317 states. [2019-05-23 11:23:25,848 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 317 to 307. [2019-05-23 11:23:25,848 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:23:25,849 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 311 transitions. [2019-05-23 11:23:25,849 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 311 transitions. Word has length 292 [2019-05-23 11:23:25,849 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:25,849 INFO L146 ILogger]: Abstraction has 307 states and 311 transitions. [2019-05-23 11:23:25,850 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:23:25,850 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 311 transitions. [2019-05-23 11:23:25,851 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 307 [2019-05-23 11:23:25,851 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:25,852 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:25,852 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:25,852 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:25,852 INFO L146 ILogger]: Analyzing trace with hash 687477199, now seen corresponding path program 13 times [2019-05-23 11:23:25,853 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:25,853 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:25,853 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:25,853 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:25,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:25,879 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:26,392 INFO L146 ILogger]: Checked inductivity of 951 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:23:26,393 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:26,393 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 11:23:26,401 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:26,469 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:26,471 INFO L146 ILogger]: Trace formula consists of 478 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:23:26,476 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:26,642 INFO L146 ILogger]: Checked inductivity of 951 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:23:26,660 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:26,660 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:23:26,661 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:23:26,661 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:23:26,662 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:23:26,662 INFO L146 ILogger]: Start difference. First operand 307 states and 311 transitions. Second operand 33 states. [2019-05-23 11:23:27,339 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:27,339 INFO L146 ILogger]: Finished difference Result 517 states and 525 transitions. [2019-05-23 11:23:27,339 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:23:27,340 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 306 [2019-05-23 11:23:27,340 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:27,341 INFO L146 ILogger]: With dead ends: 517 [2019-05-23 11:23:27,341 INFO L146 ILogger]: Without dead ends: 319 [2019-05-23 11:23:27,343 INFO L146 ILogger]: 0 DeclaredPredicates, 364 GetRequests, 305 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 11:23:27,343 INFO L146 ILogger]: Start minimizeSevpa. Operand 319 states. [2019-05-23 11:23:27,347 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 319 to 314. [2019-05-23 11:23:27,348 INFO L146 ILogger]: Start removeUnreachable. Operand 314 states. [2019-05-23 11:23:27,348 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 314 states to 314 states and 318 transitions. [2019-05-23 11:23:27,348 INFO L146 ILogger]: Start accepts. Automaton has 314 states and 318 transitions. Word has length 306 [2019-05-23 11:23:27,349 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:27,349 INFO L146 ILogger]: Abstraction has 314 states and 318 transitions. [2019-05-23 11:23:27,349 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:23:27,349 INFO L146 ILogger]: Start isEmpty. Operand 314 states and 318 transitions. [2019-05-23 11:23:27,351 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 314 [2019-05-23 11:23:27,351 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:27,351 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:27,352 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:27,352 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:27,352 INFO L146 ILogger]: Analyzing trace with hash -1746810855, now seen corresponding path program 14 times [2019-05-23 11:23:27,352 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:27,352 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:27,353 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:27,353 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:27,353 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:27,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:28,700 INFO L146 ILogger]: Checked inductivity of 1050 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:23:28,700 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:28,700 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 11:23:28,709 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:28,799 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:28,799 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:28,801 INFO L146 ILogger]: Trace formula consists of 488 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:23:28,805 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:28,927 INFO L146 ILogger]: Checked inductivity of 1050 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:23:28,945 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:28,946 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:23:28,946 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:23:28,946 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:23:28,947 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:23:28,947 INFO L146 ILogger]: Start difference. First operand 314 states and 318 transitions. Second operand 35 states. [2019-05-23 11:23:29,569 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:29,569 INFO L146 ILogger]: Finished difference Result 524 states and 532 transitions. [2019-05-23 11:23:29,570 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:23:29,570 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 313 [2019-05-23 11:23:29,570 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:29,571 INFO L146 ILogger]: With dead ends: 524 [2019-05-23 11:23:29,571 INFO L146 ILogger]: Without dead ends: 326 [2019-05-23 11:23:29,573 INFO L146 ILogger]: 0 DeclaredPredicates, 375 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:23:29,574 INFO L146 ILogger]: Start minimizeSevpa. Operand 326 states. [2019-05-23 11:23:29,579 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 326 to 321. [2019-05-23 11:23:29,579 INFO L146 ILogger]: Start removeUnreachable. Operand 321 states. [2019-05-23 11:23:29,580 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 321 states to 321 states and 325 transitions. [2019-05-23 11:23:29,580 INFO L146 ILogger]: Start accepts. Automaton has 321 states and 325 transitions. Word has length 313 [2019-05-23 11:23:29,580 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:29,580 INFO L146 ILogger]: Abstraction has 321 states and 325 transitions. [2019-05-23 11:23:29,580 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:23:29,581 INFO L146 ILogger]: Start isEmpty. Operand 321 states and 325 transitions. [2019-05-23 11:23:29,582 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 321 [2019-05-23 11:23:29,582 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:29,583 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:29,583 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:29,583 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:29,583 INFO L146 ILogger]: Analyzing trace with hash 68700815, now seen corresponding path program 15 times [2019-05-23 11:23:29,584 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:29,584 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:29,584 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:29,584 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:29,585 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:29,610 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:30,476 INFO L146 ILogger]: Checked inductivity of 1156 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:23:30,477 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:30,477 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 11:23:30,486 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:30,602 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:23:30,603 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:30,605 INFO L146 ILogger]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:30,609 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:31,828 INFO L146 ILogger]: Checked inductivity of 1156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2019-05-23 11:23:31,846 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:31,846 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:23:31,847 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:23:31,847 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:23:31,848 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:23:31,848 INFO L146 ILogger]: Start difference. First operand 321 states and 325 transitions. Second operand 46 states. [2019-05-23 11:23:33,202 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:33,203 INFO L146 ILogger]: Finished difference Result 567 states and 578 transitions. [2019-05-23 11:23:33,203 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:23:33,203 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 320 [2019-05-23 11:23:33,204 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:33,206 INFO L146 ILogger]: With dead ends: 567 [2019-05-23 11:23:33,206 INFO L146 ILogger]: Without dead ends: 369 [2019-05-23 11:23:33,209 INFO L146 ILogger]: 0 DeclaredPredicates, 396 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:23:33,210 INFO L146 ILogger]: Start minimizeSevpa. Operand 369 states. [2019-05-23 11:23:33,214 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 369 to 349. [2019-05-23 11:23:33,214 INFO L146 ILogger]: Start removeUnreachable. Operand 349 states. [2019-05-23 11:23:33,215 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2019-05-23 11:23:33,215 INFO L146 ILogger]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 320 [2019-05-23 11:23:33,216 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:33,216 INFO L146 ILogger]: Abstraction has 349 states and 353 transitions. [2019-05-23 11:23:33,216 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:23:33,216 INFO L146 ILogger]: Start isEmpty. Operand 349 states and 353 transitions. [2019-05-23 11:23:33,218 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 349 [2019-05-23 11:23:33,218 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:33,218 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:33,219 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:33,219 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:33,219 INFO L146 ILogger]: Analyzing trace with hash 31541138, now seen corresponding path program 16 times [2019-05-23 11:23:33,219 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:33,219 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:33,220 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:33,220 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:33,220 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:33,248 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:33,869 INFO L146 ILogger]: Checked inductivity of 1377 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:23:33,869 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:33,869 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 11:23:33,877 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:34,192 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:34,192 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:34,195 INFO L146 ILogger]: Trace formula consists of 541 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:23:34,199 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:34,303 INFO L146 ILogger]: Checked inductivity of 1377 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:23:34,322 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:34,322 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:23:34,323 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:23:34,323 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:23:34,324 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:23:34,324 INFO L146 ILogger]: Start difference. First operand 349 states and 353 transitions. Second operand 39 states. [2019-05-23 11:23:35,339 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:35,339 INFO L146 ILogger]: Finished difference Result 580 states and 588 transitions. [2019-05-23 11:23:35,340 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:23:35,340 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 348 [2019-05-23 11:23:35,340 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:35,341 INFO L146 ILogger]: With dead ends: 580 [2019-05-23 11:23:35,341 INFO L146 ILogger]: Without dead ends: 361 [2019-05-23 11:23:35,344 INFO L146 ILogger]: 0 DeclaredPredicates, 418 GetRequests, 347 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 11:23:35,345 INFO L146 ILogger]: Start minimizeSevpa. Operand 361 states. [2019-05-23 11:23:35,349 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 361 to 356. [2019-05-23 11:23:35,349 INFO L146 ILogger]: Start removeUnreachable. Operand 356 states. [2019-05-23 11:23:35,350 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 356 states to 356 states and 360 transitions. [2019-05-23 11:23:35,350 INFO L146 ILogger]: Start accepts. Automaton has 356 states and 360 transitions. Word has length 348 [2019-05-23 11:23:35,350 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:35,350 INFO L146 ILogger]: Abstraction has 356 states and 360 transitions. [2019-05-23 11:23:35,350 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:23:35,350 INFO L146 ILogger]: Start isEmpty. Operand 356 states and 360 transitions. [2019-05-23 11:23:35,352 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 356 [2019-05-23 11:23:35,352 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:35,353 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:35,353 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:35,353 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:35,353 INFO L146 ILogger]: Analyzing trace with hash -1448115876, now seen corresponding path program 17 times [2019-05-23 11:23:35,353 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:35,353 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:35,354 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:35,354 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:35,354 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:35,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:36,674 INFO L146 ILogger]: Checked inductivity of 1497 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:23:36,675 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:36,675 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 11:23:36,685 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:37,904 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:23:37,905 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:37,908 INFO L146 ILogger]: Trace formula consists of 551 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:23:37,912 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:38,038 INFO L146 ILogger]: Checked inductivity of 1497 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:23:38,058 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:38,058 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:23:38,059 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:23:38,059 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:23:38,060 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:23:38,060 INFO L146 ILogger]: Start difference. First operand 356 states and 360 transitions. Second operand 41 states. [2019-05-23 11:23:38,983 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:38,983 INFO L146 ILogger]: Finished difference Result 587 states and 595 transitions. [2019-05-23 11:23:38,984 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:23:38,984 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 355 [2019-05-23 11:23:38,984 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:38,985 INFO L146 ILogger]: With dead ends: 587 [2019-05-23 11:23:38,985 INFO L146 ILogger]: Without dead ends: 368 [2019-05-23 11:23:38,987 INFO L146 ILogger]: 0 DeclaredPredicates, 429 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:23:38,988 INFO L146 ILogger]: Start minimizeSevpa. Operand 368 states. [2019-05-23 11:23:38,992 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 368 to 363. [2019-05-23 11:23:38,992 INFO L146 ILogger]: Start removeUnreachable. Operand 363 states. [2019-05-23 11:23:38,993 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 363 states to 363 states and 367 transitions. [2019-05-23 11:23:38,993 INFO L146 ILogger]: Start accepts. Automaton has 363 states and 367 transitions. Word has length 355 [2019-05-23 11:23:38,993 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:38,993 INFO L146 ILogger]: Abstraction has 363 states and 367 transitions. [2019-05-23 11:23:38,993 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:23:38,994 INFO L146 ILogger]: Start isEmpty. Operand 363 states and 367 transitions. [2019-05-23 11:23:38,995 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 363 [2019-05-23 11:23:38,995 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:38,996 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:38,996 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:38,996 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:38,996 INFO L146 ILogger]: Analyzing trace with hash 1489801298, now seen corresponding path program 18 times [2019-05-23 11:23:38,996 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:38,997 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:38,997 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:38,997 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:38,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:39,025 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:39,654 INFO L146 ILogger]: Checked inductivity of 1624 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:23:39,654 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:39,654 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 11:23:39,662 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:39,975 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:23:39,975 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:39,977 INFO L146 ILogger]: Trace formula consists of 438 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:23:39,981 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:40,508 INFO L146 ILogger]: Checked inductivity of 1624 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2019-05-23 11:23:40,527 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:40,528 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 13] total 52 [2019-05-23 11:23:40,528 INFO L146 ILogger]: Interpolant automaton has 52 states [2019-05-23 11:23:40,528 INFO L146 ILogger]: Constructing interpolant automaton starting with 52 interpolants. [2019-05-23 11:23:40,529 INFO L146 ILogger]: CoverageRelationStatistics Valid=487, Invalid=2165, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:23:40,529 INFO L146 ILogger]: Start difference. First operand 363 states and 367 transitions. Second operand 52 states. [2019-05-23 11:23:42,071 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:42,072 INFO L146 ILogger]: Finished difference Result 606 states and 615 transitions. [2019-05-23 11:23:42,072 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-05-23 11:23:42,072 INFO L146 ILogger]: Start accepts. Automaton has 52 states. Word has length 362 [2019-05-23 11:23:42,072 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:42,073 INFO L146 ILogger]: With dead ends: 606 [2019-05-23 11:23:42,074 INFO L146 ILogger]: Without dead ends: 387 [2019-05-23 11:23:42,075 INFO L146 ILogger]: 0 DeclaredPredicates, 450 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2175, Invalid=7725, Unknown=0, NotChecked=0, Total=9900 [2019-05-23 11:23:42,076 INFO L146 ILogger]: Start minimizeSevpa. Operand 387 states. [2019-05-23 11:23:42,078 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 387 to 377. [2019-05-23 11:23:42,079 INFO L146 ILogger]: Start removeUnreachable. Operand 377 states. [2019-05-23 11:23:42,079 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 377 states to 377 states and 381 transitions. [2019-05-23 11:23:42,079 INFO L146 ILogger]: Start accepts. Automaton has 377 states and 381 transitions. Word has length 362 [2019-05-23 11:23:42,079 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:42,080 INFO L146 ILogger]: Abstraction has 377 states and 381 transitions. [2019-05-23 11:23:42,080 INFO L146 ILogger]: Interpolant automaton has 52 states. [2019-05-23 11:23:42,080 INFO L146 ILogger]: Start isEmpty. Operand 377 states and 381 transitions. [2019-05-23 11:23:42,082 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 377 [2019-05-23 11:23:42,082 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:42,082 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:42,083 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:42,083 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:42,083 INFO L146 ILogger]: Analyzing trace with hash -693820071, now seen corresponding path program 19 times [2019-05-23 11:23:42,083 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:42,083 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:42,085 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:42,086 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:42,086 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:42,116 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:43,712 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:23:43,713 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:43,713 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 11:23:43,723 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:43,807 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:43,809 INFO L146 ILogger]: Trace formula consists of 581 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:23:43,812 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:44,113 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:23:44,131 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:44,131 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:23:44,132 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:23:44,132 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:23:44,132 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:23:44,133 INFO L146 ILogger]: Start difference. First operand 377 states and 381 transitions. Second operand 45 states. [2019-05-23 11:23:45,311 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:45,311 INFO L146 ILogger]: Finished difference Result 615 states and 623 transitions. [2019-05-23 11:23:45,312 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:23:45,312 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 376 [2019-05-23 11:23:45,313 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:45,315 INFO L146 ILogger]: With dead ends: 615 [2019-05-23 11:23:45,315 INFO L146 ILogger]: Without dead ends: 389 [2019-05-23 11:23:45,316 INFO L146 ILogger]: 0 DeclaredPredicates, 458 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:23:45,317 INFO L146 ILogger]: Start minimizeSevpa. Operand 389 states. [2019-05-23 11:23:45,321 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 389 to 384. [2019-05-23 11:23:45,321 INFO L146 ILogger]: Start removeUnreachable. Operand 384 states. [2019-05-23 11:23:45,322 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 384 states to 384 states and 388 transitions. [2019-05-23 11:23:45,322 INFO L146 ILogger]: Start accepts. Automaton has 384 states and 388 transitions. Word has length 376 [2019-05-23 11:23:45,323 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:45,323 INFO L146 ILogger]: Abstraction has 384 states and 388 transitions. [2019-05-23 11:23:45,323 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:23:45,323 INFO L146 ILogger]: Start isEmpty. Operand 384 states and 388 transitions. [2019-05-23 11:23:45,325 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 384 [2019-05-23 11:23:45,325 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:45,325 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:45,325 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:45,326 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:45,326 INFO L146 ILogger]: Analyzing trace with hash 1079913507, now seen corresponding path program 20 times [2019-05-23 11:23:45,326 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:45,326 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:45,327 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:45,327 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:45,327 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:45,355 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:46,047 INFO L146 ILogger]: Checked inductivity of 1935 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:23:46,047 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:46,048 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 11:23:46,055 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:46,144 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:46,144 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:46,146 INFO L146 ILogger]: Trace formula consists of 591 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:23:46,150 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:46,429 INFO L146 ILogger]: Checked inductivity of 1935 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:23:46,464 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:46,464 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:23:46,465 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:23:46,465 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:23:46,465 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:23:46,465 INFO L146 ILogger]: Start difference. First operand 384 states and 388 transitions. Second operand 47 states. [2019-05-23 11:23:47,879 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:47,880 INFO L146 ILogger]: Finished difference Result 622 states and 630 transitions. [2019-05-23 11:23:47,880 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:23:47,880 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 383 [2019-05-23 11:23:47,881 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:47,882 INFO L146 ILogger]: With dead ends: 622 [2019-05-23 11:23:47,882 INFO L146 ILogger]: Without dead ends: 396 [2019-05-23 11:23:47,884 INFO L146 ILogger]: 0 DeclaredPredicates, 469 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:23:47,885 INFO L146 ILogger]: Start minimizeSevpa. Operand 396 states. [2019-05-23 11:23:47,891 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 396 to 391. [2019-05-23 11:23:47,892 INFO L146 ILogger]: Start removeUnreachable. Operand 391 states. [2019-05-23 11:23:47,893 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 391 states to 391 states and 395 transitions. [2019-05-23 11:23:47,893 INFO L146 ILogger]: Start accepts. Automaton has 391 states and 395 transitions. Word has length 383 [2019-05-23 11:23:47,893 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:47,894 INFO L146 ILogger]: Abstraction has 391 states and 395 transitions. [2019-05-23 11:23:47,894 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:23:47,894 INFO L146 ILogger]: Start isEmpty. Operand 391 states and 395 transitions. [2019-05-23 11:23:47,897 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 391 [2019-05-23 11:23:47,898 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:47,898 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:47,898 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:47,899 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:47,899 INFO L146 ILogger]: Analyzing trace with hash 1665125913, now seen corresponding path program 21 times [2019-05-23 11:23:47,899 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:47,899 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:47,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:47,900 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:47,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:47,939 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:48,805 INFO L146 ILogger]: Checked inductivity of 2083 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:23:48,805 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:48,805 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 11:23:48,814 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:48,988 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:23:48,988 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:48,992 INFO L146 ILogger]: Trace formula consists of 441 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:23:48,996 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:49,762 INFO L146 ILogger]: Checked inductivity of 2083 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1972 trivial. 0 not checked. [2019-05-23 11:23:49,782 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:49,782 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 15] total 60 [2019-05-23 11:23:49,783 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:23:49,783 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:23:49,783 INFO L146 ILogger]: CoverageRelationStatistics Valid=637, Invalid=2903, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:23:49,784 INFO L146 ILogger]: Start difference. First operand 391 states and 395 transitions. Second operand 60 states. [2019-05-23 11:23:52,341 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:52,341 INFO L146 ILogger]: Finished difference Result 665 states and 676 transitions. [2019-05-23 11:23:52,341 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-05-23 11:23:52,342 INFO L146 ILogger]: Start accepts. Automaton has 60 states. Word has length 390 [2019-05-23 11:23:52,342 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:52,347 INFO L146 ILogger]: With dead ends: 665 [2019-05-23 11:23:52,347 INFO L146 ILogger]: Without dead ends: 439 [2019-05-23 11:23:52,349 INFO L146 ILogger]: 0 DeclaredPredicates, 504 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2591 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2885, Invalid=10455, Unknown=0, NotChecked=0, Total=13340 [2019-05-23 11:23:52,349 INFO L146 ILogger]: Start minimizeSevpa. Operand 439 states. [2019-05-23 11:23:52,354 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 439 to 419. [2019-05-23 11:23:52,354 INFO L146 ILogger]: Start removeUnreachable. Operand 419 states. [2019-05-23 11:23:52,355 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 419 states to 419 states and 423 transitions. [2019-05-23 11:23:52,355 INFO L146 ILogger]: Start accepts. Automaton has 419 states and 423 transitions. Word has length 390 [2019-05-23 11:23:52,356 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:52,356 INFO L146 ILogger]: Abstraction has 419 states and 423 transitions. [2019-05-23 11:23:52,356 INFO L146 ILogger]: Interpolant automaton has 60 states. [2019-05-23 11:23:52,356 INFO L146 ILogger]: Start isEmpty. Operand 419 states and 423 transitions. [2019-05-23 11:23:52,358 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 419 [2019-05-23 11:23:52,359 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:52,359 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:52,359 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:52,359 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:52,360 INFO L146 ILogger]: Analyzing trace with hash -656265426, now seen corresponding path program 22 times [2019-05-23 11:23:52,360 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:52,360 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:52,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,361 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:52,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,399 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:53,305 INFO L146 ILogger]: Checked inductivity of 2367 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:23:53,305 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:53,305 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 11:23:53,314 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:53,818 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:53,818 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:53,821 INFO L146 ILogger]: Trace formula consists of 644 conjuncts, 48 conjunts are in the unsatisfiable core [2019-05-23 11:23:53,825 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:53,969 INFO L146 ILogger]: Checked inductivity of 2367 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:23:53,988 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:53,988 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-05-23 11:23:53,989 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:23:53,989 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:23:53,989 INFO L146 ILogger]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:23:53,989 INFO L146 ILogger]: Start difference. First operand 419 states and 423 transitions. Second operand 51 states. [2019-05-23 11:23:55,305 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:55,305 INFO L146 ILogger]: Finished difference Result 678 states and 686 transitions. [2019-05-23 11:23:55,306 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-05-23 11:23:55,306 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 418 [2019-05-23 11:23:55,306 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:55,308 INFO L146 ILogger]: With dead ends: 678 [2019-05-23 11:23:55,308 INFO L146 ILogger]: Without dead ends: 431 [2019-05-23 11:23:55,310 INFO L146 ILogger]: 0 DeclaredPredicates, 512 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:23:55,311 INFO L146 ILogger]: Start minimizeSevpa. Operand 431 states. [2019-05-23 11:23:55,315 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 431 to 426. [2019-05-23 11:23:55,316 INFO L146 ILogger]: Start removeUnreachable. Operand 426 states. [2019-05-23 11:23:55,316 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 426 states to 426 states and 430 transitions. [2019-05-23 11:23:55,316 INFO L146 ILogger]: Start accepts. Automaton has 426 states and 430 transitions. Word has length 418 [2019-05-23 11:23:55,317 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:55,317 INFO L146 ILogger]: Abstraction has 426 states and 430 transitions. [2019-05-23 11:23:55,317 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:23:55,317 INFO L146 ILogger]: Start isEmpty. Operand 426 states and 430 transitions. [2019-05-23 11:23:55,319 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 426 [2019-05-23 11:23:55,319 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:55,320 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:55,320 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:55,320 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:55,320 INFO L146 ILogger]: Analyzing trace with hash 2039814520, now seen corresponding path program 23 times [2019-05-23 11:23:55,321 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:55,321 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:55,321 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:55,321 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:55,322 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:55,353 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:56,660 INFO L146 ILogger]: Checked inductivity of 2529 backedges. 0 proven. 1956 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:23:56,660 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:56,660 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:56,671 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:59,883 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2019-05-23 11:23:59,883 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:59,889 INFO L146 ILogger]: Trace formula consists of 654 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:23:59,892 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:01,032 INFO L146 ILogger]: Checked inductivity of 2529 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 2375 trivial. 0 not checked. [2019-05-23 11:24:01,052 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:01,052 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 17] total 66 [2019-05-23 11:24:01,053 INFO L146 ILogger]: Interpolant automaton has 66 states [2019-05-23 11:24:01,053 INFO L146 ILogger]: Constructing interpolant automaton starting with 66 interpolants. [2019-05-23 11:24:01,054 INFO L146 ILogger]: CoverageRelationStatistics Valid=754, Invalid=3536, Unknown=0, NotChecked=0, Total=4290 [2019-05-23 11:24:01,054 INFO L146 ILogger]: Start difference. First operand 426 states and 430 transitions. Second operand 66 states.