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/max20_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:23:37,467 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:23:37,469 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:23:37,481 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:23:37,481 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:23:37,482 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:23:37,484 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:23:37,486 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:23:37,487 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:23:37,488 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:23:37,489 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:23:37,490 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:23:37,491 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:23:37,491 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:23:37,493 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:23:37,493 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:23:37,494 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:23:37,496 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:23:37,498 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:23:37,500 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:23:37,501 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:23:37,502 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:23:37,505 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:23:37,505 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:23:37,505 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:23:37,506 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:23:37,507 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:23:37,508 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:23:37,508 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:23:37,509 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:23:37,510 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:23:37,511 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:23:37,512 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:23:37,512 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:23:37,513 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:23:37,513 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:23:37,513 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:23:37,514 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:23:37,515 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:23:37,515 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:23:37,542 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:23:37,542 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:23:37,545 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:23:37,545 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:23:37,545 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:23:37,545 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:23:37,546 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:23:37,546 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:23:37,546 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:23:37,546 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:23:37,546 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:23:37,546 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:23:37,547 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:23:37,547 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:23:37,547 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:23:37,547 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:23:37,547 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:23:37,548 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:23:37,548 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:23:37,549 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:23:37,549 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:23:37,549 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:23:37,549 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:23:37,549 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:23:37,550 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:23:37,550 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:23:37,550 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:23:37,550 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:23:37,550 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 11:23:37,587 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:23:37,609 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:23:37,613 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:23:37,614 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:23:37,614 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:23:37,615 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/max20_true-unreach-call.i [2019-05-23 11:23:37,667 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7da4d8da/3a45a98fd8d14b4aa38aa4e0901b591f/FLAG4c4997048 [2019-05-23 11:23:38,086 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:23:38,086 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/max20_true-unreach-call.i [2019-05-23 11:23:38,093 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7da4d8da/3a45a98fd8d14b4aa38aa4e0901b591f/FLAG4c4997048 [2019-05-23 11:23:38,447 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7da4d8da/3a45a98fd8d14b4aa38aa4e0901b591f [2019-05-23 11:23:38,456 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:23:38,457 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:23:38,458 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:38,458 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:23:38,461 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:23:38,462 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,465 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c20ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38, skipping insertion in model container [2019-05-23 11:23:38,465 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,473 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:23:38,490 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:23:38,661 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:38,677 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:23:38,721 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:38,749 INFO L146 ILogger]: Completed translation [2019-05-23 11:23:38,749 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38 WrapperNode [2019-05-23 11:23:38,750 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:38,751 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:38,751 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:23:38,752 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:23:38,761 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,771 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,809 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:38,810 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:23:38,811 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:23:38,811 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:23:38,824 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,824 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,946 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,947 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,964 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,970 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,973 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (1/1) ... [2019-05-23 11:23:38,975 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:23:38,976 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:23:38,976 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:23:38,976 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:23:38,977 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (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 11:23:39,031 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:23:39,032 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:23:39,032 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:23:39,032 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:23:39,032 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:23:39,032 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:23:39,817 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:23:39,818 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:23:39,819 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:39 BoogieIcfgContainer [2019-05-23 11:23:39,819 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:23:39,820 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:23:39,820 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:23:39,823 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:23:39,823 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:23:38" (1/3) ... [2019-05-23 11:23:39,824 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679cd41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:39, skipping insertion in model container [2019-05-23 11:23:39,824 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:38" (2/3) ... [2019-05-23 11:23:39,825 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679cd41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:39, skipping insertion in model container [2019-05-23 11:23:39,825 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:39" (3/3) ... [2019-05-23 11:23:39,827 INFO L146 ILogger]: Analyzing ICFG max20_true-unreach-call.i [2019-05-23 11:23:39,836 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:23:39,844 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:23:39,859 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:23:39,887 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:23:39,888 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:23:39,888 INFO L146 ILogger]: Hoare is true [2019-05-23 11:23:39,888 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:23:39,889 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:23:39,889 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:23:39,889 INFO L146 ILogger]: Difference is false [2019-05-23 11:23:39,889 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:23:39,889 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:23:39,907 INFO L146 ILogger]: Start isEmpty. Operand 123 states. [2019-05-23 11:23:39,915 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:23:39,915 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:39,916 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 11:23:39,918 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:39,923 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:39,923 INFO L146 ILogger]: Analyzing trace with hash -995057191, now seen corresponding path program 1 times [2019-05-23 11:23:39,925 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:39,925 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:39,971 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:39,971 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:39,971 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:40,016 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:40,094 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 11:23:40,097 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:23:40,098 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:23:40,101 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:23:40,115 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:23:40,116 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:23:40,118 INFO L146 ILogger]: Start difference. First operand 123 states. Second operand 3 states. [2019-05-23 11:23:40,234 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:40,235 INFO L146 ILogger]: Finished difference Result 235 states and 261 transitions. [2019-05-23 11:23:40,235 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:23:40,237 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 68 [2019-05-23 11:23:40,237 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:40,248 INFO L146 ILogger]: With dead ends: 235 [2019-05-23 11:23:40,249 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:23:40,252 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 11:23:40,266 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:23:40,286 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 118. [2019-05-23 11:23:40,288 INFO L146 ILogger]: Start removeUnreachable. Operand 118 states. [2019-05-23 11:23:40,290 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2019-05-23 11:23:40,294 INFO L146 ILogger]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 68 [2019-05-23 11:23:40,294 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:40,294 INFO L146 ILogger]: Abstraction has 118 states and 125 transitions. [2019-05-23 11:23:40,295 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:23:40,295 INFO L146 ILogger]: Start isEmpty. Operand 118 states and 125 transitions. [2019-05-23 11:23:40,299 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:23:40,301 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:40,301 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 11:23:40,301 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:40,302 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:40,303 INFO L146 ILogger]: Analyzing trace with hash -654270407, now seen corresponding path program 1 times [2019-05-23 11:23:40,303 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:40,303 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:40,305 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:40,305 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:40,305 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:40,335 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:40,431 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 11:23:40,431 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:40,431 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 11:23:40,451 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:40,496 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:40,498 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:23:40,505 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:40,552 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 11:23:40,581 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:40,582 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:23:40,583 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:23:40,584 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:23:40,584 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:23:40,584 INFO L146 ILogger]: Start difference. First operand 118 states and 125 transitions. Second operand 6 states. [2019-05-23 11:23:41,003 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:41,004 INFO L146 ILogger]: Finished difference Result 266 states and 286 transitions. [2019-05-23 11:23:41,005 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:23:41,005 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 75 [2019-05-23 11:23:41,005 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:41,008 INFO L146 ILogger]: With dead ends: 266 [2019-05-23 11:23:41,008 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:23:41,009 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 11:23:41,010 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:23:41,019 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 128. [2019-05-23 11:23:41,019 INFO L146 ILogger]: Start removeUnreachable. Operand 128 states. [2019-05-23 11:23:41,021 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2019-05-23 11:23:41,021 INFO L146 ILogger]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 75 [2019-05-23 11:23:41,021 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:41,022 INFO L146 ILogger]: Abstraction has 128 states and 135 transitions. [2019-05-23 11:23:41,022 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:23:41,022 INFO L146 ILogger]: Start isEmpty. Operand 128 states and 135 transitions. [2019-05-23 11:23:41,025 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:23:41,025 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:41,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:41,026 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:41,026 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:41,026 INFO L146 ILogger]: Analyzing trace with hash -698075846, now seen corresponding path program 1 times [2019-05-23 11:23:41,027 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:41,027 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:41,028 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:41,028 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:41,028 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:41,062 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:41,197 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 11:23:41,197 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:41,197 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 11:23:41,208 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:41,263 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:41,264 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:23:41,269 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:41,408 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 11:23:41,439 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:41,440 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:23:41,440 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:23:41,443 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:23:41,444 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:23:41,444 INFO L146 ILogger]: Start difference. First operand 128 states and 135 transitions. Second operand 6 states. [2019-05-23 11:23:42,158 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:42,158 INFO L146 ILogger]: Finished difference Result 287 states and 308 transitions. [2019-05-23 11:23:42,158 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:23:42,159 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 115 [2019-05-23 11:23:42,160 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:42,162 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:23:42,162 INFO L146 ILogger]: Without dead ends: 206 [2019-05-23 11:23:42,163 INFO L146 ILogger]: 0 DeclaredPredicates, 123 GetRequests, 117 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 11:23:42,164 INFO L146 ILogger]: Start minimizeSevpa. Operand 206 states. [2019-05-23 11:23:42,174 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 206 to 168. [2019-05-23 11:23:42,174 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:23:42,175 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2019-05-23 11:23:42,176 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 115 [2019-05-23 11:23:42,176 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:42,176 INFO L146 ILogger]: Abstraction has 168 states and 178 transitions. [2019-05-23 11:23:42,176 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:23:42,176 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 178 transitions. [2019-05-23 11:23:42,179 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 156 [2019-05-23 11:23:42,179 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:42,180 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, 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 11:23:42,180 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:42,180 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:42,180 INFO L146 ILogger]: Analyzing trace with hash 780442322, now seen corresponding path program 1 times [2019-05-23 11:23:42,180 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:42,181 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:42,181 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:42,182 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:42,182 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:42,233 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:42,361 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:23:42,362 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:42,362 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 11:23:42,374 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:42,456 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:42,458 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:42,468 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:42,913 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:23:42,931 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:42,932 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:23:42,932 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:23:42,932 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:23:42,933 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:23:42,933 INFO L146 ILogger]: Start difference. First operand 168 states and 178 transitions. Second operand 10 states. [2019-05-23 11:23:43,301 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:43,301 INFO L146 ILogger]: Finished difference Result 335 states and 356 transitions. [2019-05-23 11:23:43,302 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:23:43,302 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 155 [2019-05-23 11:23:43,302 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:43,303 INFO L146 ILogger]: With dead ends: 335 [2019-05-23 11:23:43,303 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:23:43,304 INFO L146 ILogger]: 0 DeclaredPredicates, 165 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:23:43,307 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:23:43,318 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 182. [2019-05-23 11:23:43,319 INFO L146 ILogger]: Start removeUnreachable. Operand 182 states. [2019-05-23 11:23:43,319 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2019-05-23 11:23:43,320 INFO L146 ILogger]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 155 [2019-05-23 11:23:43,320 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:43,320 INFO L146 ILogger]: Abstraction has 182 states and 192 transitions. [2019-05-23 11:23:43,320 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:23:43,320 INFO L146 ILogger]: Start isEmpty. Operand 182 states and 192 transitions. [2019-05-23 11:23:43,323 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 170 [2019-05-23 11:23:43,323 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:43,323 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, 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 11:23:43,324 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:43,324 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:43,324 INFO L146 ILogger]: Analyzing trace with hash -1183164167, now seen corresponding path program 2 times [2019-05-23 11:23:43,324 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:43,325 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:43,325 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:43,326 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:43,326 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:43,377 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:43,514 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:23:43,515 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:43,515 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 11:23:43,526 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:43,598 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:43,598 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:43,600 INFO L146 ILogger]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:43,612 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:43,739 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:23:43,758 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:43,758 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:23:43,758 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:23:43,759 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:23:43,759 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:23:43,759 INFO L146 ILogger]: Start difference. First operand 182 states and 192 transitions. Second operand 11 states. [2019-05-23 11:23:43,882 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:43,882 INFO L146 ILogger]: Finished difference Result 344 states and 364 transitions. [2019-05-23 11:23:43,883 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:23:43,883 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 169 [2019-05-23 11:23:43,883 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:43,884 INFO L146 ILogger]: With dead ends: 344 [2019-05-23 11:23:43,884 INFO L146 ILogger]: Without dead ends: 194 [2019-05-23 11:23:43,885 INFO L146 ILogger]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:23:43,886 INFO L146 ILogger]: Start minimizeSevpa. Operand 194 states. [2019-05-23 11:23:43,896 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 194 to 189. [2019-05-23 11:23:43,897 INFO L146 ILogger]: Start removeUnreachable. Operand 189 states. [2019-05-23 11:23:43,897 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 189 states to 189 states and 199 transitions. [2019-05-23 11:23:43,898 INFO L146 ILogger]: Start accepts. Automaton has 189 states and 199 transitions. Word has length 169 [2019-05-23 11:23:43,898 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:43,898 INFO L146 ILogger]: Abstraction has 189 states and 199 transitions. [2019-05-23 11:23:43,898 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:23:43,898 INFO L146 ILogger]: Start isEmpty. Operand 189 states and 199 transitions. [2019-05-23 11:23:43,906 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 177 [2019-05-23 11:23:43,906 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:43,906 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, 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 11:23:43,906 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:43,907 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:43,907 INFO L146 ILogger]: Analyzing trace with hash -1973557393, now seen corresponding path program 3 times [2019-05-23 11:23:43,907 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:43,907 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:43,908 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:43,908 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:43,908 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:43,938 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:44,092 INFO L146 ILogger]: Checked inductivity of 94 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:23:44,092 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:44,092 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 11:23:44,103 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:44,153 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:23:44,153 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:44,154 INFO L146 ILogger]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:44,157 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:44,295 INFO L146 ILogger]: Checked inductivity of 94 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:23:44,316 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:44,316 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:23:44,317 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:23:44,317 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:23:44,317 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:23:44,317 INFO L146 ILogger]: Start difference. First operand 189 states and 199 transitions. Second operand 16 states. [2019-05-23 11:23:44,941 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:44,942 INFO L146 ILogger]: Finished difference Result 423 states and 452 transitions. [2019-05-23 11:23:44,942 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:23:44,943 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 176 [2019-05-23 11:23:44,943 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:44,944 INFO L146 ILogger]: With dead ends: 423 [2019-05-23 11:23:44,945 INFO L146 ILogger]: Without dead ends: 273 [2019-05-23 11:23:44,946 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:23:44,946 INFO L146 ILogger]: Start minimizeSevpa. Operand 273 states. [2019-05-23 11:23:44,953 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 273 to 235. [2019-05-23 11:23:44,953 INFO L146 ILogger]: Start removeUnreachable. Operand 235 states. [2019-05-23 11:23:44,954 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 235 states to 235 states and 248 transitions. [2019-05-23 11:23:44,954 INFO L146 ILogger]: Start accepts. Automaton has 235 states and 248 transitions. Word has length 176 [2019-05-23 11:23:44,954 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:44,955 INFO L146 ILogger]: Abstraction has 235 states and 248 transitions. [2019-05-23 11:23:44,955 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:23:44,955 INFO L146 ILogger]: Start isEmpty. Operand 235 states and 248 transitions. [2019-05-23 11:23:44,958 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 217 [2019-05-23 11:23:44,958 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:44,958 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, 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 11:23:44,958 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:44,959 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:44,959 INFO L146 ILogger]: Analyzing trace with hash -1794583568, now seen corresponding path program 4 times [2019-05-23 11:23:44,959 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:44,959 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:44,960 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:44,960 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:44,960 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:44,988 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:45,248 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-05-23 11:23:45,248 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:45,249 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 11:23:45,258 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:45,324 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:45,324 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:45,326 INFO L146 ILogger]: Trace formula consists of 337 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:45,330 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:45,440 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-05-23 11:23:45,468 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:45,468 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:23:45,469 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:23:45,469 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:23:45,469 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:23:45,469 INFO L146 ILogger]: Start difference. First operand 235 states and 248 transitions. Second operand 15 states. [2019-05-23 11:23:45,760 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:45,761 INFO L146 ILogger]: Finished difference Result 436 states and 462 transitions. [2019-05-23 11:23:45,761 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:23:45,761 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 216 [2019-05-23 11:23:45,762 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:45,763 INFO L146 ILogger]: With dead ends: 436 [2019-05-23 11:23:45,763 INFO L146 ILogger]: Without dead ends: 247 [2019-05-23 11:23:45,764 INFO L146 ILogger]: 0 DeclaredPredicates, 238 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:23:45,765 INFO L146 ILogger]: Start minimizeSevpa. Operand 247 states. [2019-05-23 11:23:45,773 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 247 to 242. [2019-05-23 11:23:45,773 INFO L146 ILogger]: Start removeUnreachable. Operand 242 states. [2019-05-23 11:23:45,774 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 242 states to 242 states and 255 transitions. [2019-05-23 11:23:45,775 INFO L146 ILogger]: Start accepts. Automaton has 242 states and 255 transitions. Word has length 216 [2019-05-23 11:23:45,775 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:45,775 INFO L146 ILogger]: Abstraction has 242 states and 255 transitions. [2019-05-23 11:23:45,775 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:23:45,775 INFO L146 ILogger]: Start isEmpty. Operand 242 states and 255 transitions. [2019-05-23 11:23:45,778 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 224 [2019-05-23 11:23:45,778 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:45,778 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, 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 11:23:45,778 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:45,779 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:45,779 INFO L146 ILogger]: Analyzing trace with hash 1458971322, now seen corresponding path program 5 times [2019-05-23 11:23:45,779 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:45,780 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:45,780 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:45,781 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:45,781 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:45,830 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:46,143 INFO L146 ILogger]: Checked inductivity of 228 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-05-23 11:23:46,143 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:46,144 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 11:23:46,152 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:46,298 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:23:46,298 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:46,300 INFO L146 ILogger]: Trace formula consists of 347 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:46,303 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:46,509 INFO L146 ILogger]: Checked inductivity of 228 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-05-23 11:23:46,543 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:46,543 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:23:46,544 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:23:46,544 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:23:46,545 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:23:46,545 INFO L146 ILogger]: Start difference. First operand 242 states and 255 transitions. Second operand 22 states. [2019-05-23 11:23:47,314 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:47,314 INFO L146 ILogger]: Finished difference Result 515 states and 550 transitions. [2019-05-23 11:23:47,314 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:47,315 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 223 [2019-05-23 11:23:47,315 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:47,318 INFO L146 ILogger]: With dead ends: 515 [2019-05-23 11:23:47,318 INFO L146 ILogger]: Without dead ends: 326 [2019-05-23 11:23:47,320 INFO L146 ILogger]: 0 DeclaredPredicates, 261 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:23:47,320 INFO L146 ILogger]: Start minimizeSevpa. Operand 326 states. [2019-05-23 11:23:47,325 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 326 to 288. [2019-05-23 11:23:47,326 INFO L146 ILogger]: Start removeUnreachable. Operand 288 states. [2019-05-23 11:23:47,327 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 288 states to 288 states and 304 transitions. [2019-05-23 11:23:47,327 INFO L146 ILogger]: Start accepts. Automaton has 288 states and 304 transitions. Word has length 223 [2019-05-23 11:23:47,327 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:47,327 INFO L146 ILogger]: Abstraction has 288 states and 304 transitions. [2019-05-23 11:23:47,327 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:23:47,327 INFO L146 ILogger]: Start isEmpty. Operand 288 states and 304 transitions. [2019-05-23 11:23:47,333 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 264 [2019-05-23 11:23:47,333 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:47,333 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, 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 11:23:47,333 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:47,334 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:47,334 INFO L146 ILogger]: Analyzing trace with hash 1190603737, now seen corresponding path program 6 times [2019-05-23 11:23:47,334 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:47,334 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:47,335 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:47,335 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:47,335 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:47,377 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:48,217 INFO L146 ILogger]: Checked inductivity of 373 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2019-05-23 11:23:48,217 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:48,217 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 11:23:48,226 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:48,349 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:23:48,349 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:48,351 INFO L146 ILogger]: Trace formula consists of 279 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:48,354 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:48,444 INFO L146 ILogger]: Checked inductivity of 373 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2019-05-23 11:23:48,464 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:48,464 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:23:48,465 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:23:48,466 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:23:48,467 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:23:48,467 INFO L146 ILogger]: Start difference. First operand 288 states and 304 transitions. Second operand 22 states. [2019-05-23 11:23:48,944 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:48,945 INFO L146 ILogger]: Finished difference Result 540 states and 573 transitions. [2019-05-23 11:23:48,952 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:48,952 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 263 [2019-05-23 11:23:48,952 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:48,954 INFO L146 ILogger]: With dead ends: 540 [2019-05-23 11:23:48,954 INFO L146 ILogger]: Without dead ends: 312 [2019-05-23 11:23:48,955 INFO L146 ILogger]: 0 DeclaredPredicates, 297 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:23:48,956 INFO L146 ILogger]: Start minimizeSevpa. Operand 312 states. [2019-05-23 11:23:48,961 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 312 to 302. [2019-05-23 11:23:48,961 INFO L146 ILogger]: Start removeUnreachable. Operand 302 states. [2019-05-23 11:23:48,962 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 302 states to 302 states and 318 transitions. [2019-05-23 11:23:48,963 INFO L146 ILogger]: Start accepts. Automaton has 302 states and 318 transitions. Word has length 263 [2019-05-23 11:23:48,963 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:48,963 INFO L146 ILogger]: Abstraction has 302 states and 318 transitions. [2019-05-23 11:23:48,963 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:23:48,963 INFO L146 ILogger]: Start isEmpty. Operand 302 states and 318 transitions. [2019-05-23 11:23:48,965 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 278 [2019-05-23 11:23:48,965 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:48,965 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, 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 11:23:48,966 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:48,966 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:48,966 INFO L146 ILogger]: Analyzing trace with hash -31358830, now seen corresponding path program 7 times [2019-05-23 11:23:48,967 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:48,967 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:48,968 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:48,968 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:48,968 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:48,996 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:49,615 INFO L146 ILogger]: Checked inductivity of 438 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-05-23 11:23:49,615 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:49,615 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 11:23:49,624 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:49,683 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:49,685 INFO L146 ILogger]: Trace formula consists of 425 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:23:49,688 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:49,804 INFO L146 ILogger]: Checked inductivity of 438 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-05-23 11:23:49,823 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:49,823 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:23:49,824 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:23:49,824 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:23:49,825 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:23:49,825 INFO L146 ILogger]: Start difference. First operand 302 states and 318 transitions. Second operand 21 states. [2019-05-23 11:23:50,271 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:50,272 INFO L146 ILogger]: Finished difference Result 549 states and 581 transitions. [2019-05-23 11:23:50,272 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:23:50,272 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 277 [2019-05-23 11:23:50,273 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:50,275 INFO L146 ILogger]: With dead ends: 549 [2019-05-23 11:23:50,275 INFO L146 ILogger]: Without dead ends: 314 [2019-05-23 11:23:50,277 INFO L146 ILogger]: 0 DeclaredPredicates, 311 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:50,278 INFO L146 ILogger]: Start minimizeSevpa. Operand 314 states. [2019-05-23 11:23:50,285 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 314 to 309. [2019-05-23 11:23:50,286 INFO L146 ILogger]: Start removeUnreachable. Operand 309 states. [2019-05-23 11:23:50,287 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 309 states to 309 states and 325 transitions. [2019-05-23 11:23:50,287 INFO L146 ILogger]: Start accepts. Automaton has 309 states and 325 transitions. Word has length 277 [2019-05-23 11:23:50,288 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:50,288 INFO L146 ILogger]: Abstraction has 309 states and 325 transitions. [2019-05-23 11:23:50,288 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:23:50,288 INFO L146 ILogger]: Start isEmpty. Operand 309 states and 325 transitions. [2019-05-23 11:23:50,291 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 285 [2019-05-23 11:23:50,291 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:50,291 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, 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 11:23:50,292 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:50,292 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:50,292 INFO L146 ILogger]: Analyzing trace with hash 849020424, now seen corresponding path program 8 times [2019-05-23 11:23:50,292 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:50,292 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:50,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:50,293 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:50,294 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:50,330 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:51,261 INFO L146 ILogger]: Checked inductivity of 495 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-05-23 11:23:51,262 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:51,262 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 11:23:51,273 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:51,345 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:51,345 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:51,347 INFO L146 ILogger]: Trace formula consists of 435 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:23:51,351 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:51,477 INFO L146 ILogger]: Checked inductivity of 495 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-05-23 11:23:51,496 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:51,496 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:23:51,497 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:23:51,497 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:23:51,498 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:23:51,498 INFO L146 ILogger]: Start difference. First operand 309 states and 325 transitions. Second operand 23 states. [2019-05-23 11:23:52,734 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:52,734 INFO L146 ILogger]: Finished difference Result 556 states and 588 transitions. [2019-05-23 11:23:52,735 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:23:52,735 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 284 [2019-05-23 11:23:52,735 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:52,737 INFO L146 ILogger]: With dead ends: 556 [2019-05-23 11:23:52,737 INFO L146 ILogger]: Without dead ends: 321 [2019-05-23 11:23:52,738 INFO L146 ILogger]: 0 DeclaredPredicates, 322 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:23:52,739 INFO L146 ILogger]: Start minimizeSevpa. Operand 321 states. [2019-05-23 11:23:52,743 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 321 to 316. [2019-05-23 11:23:52,744 INFO L146 ILogger]: Start removeUnreachable. Operand 316 states. [2019-05-23 11:23:52,745 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 316 states to 316 states and 332 transitions. [2019-05-23 11:23:52,745 INFO L146 ILogger]: Start accepts. Automaton has 316 states and 332 transitions. Word has length 284 [2019-05-23 11:23:52,745 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:52,745 INFO L146 ILogger]: Abstraction has 316 states and 332 transitions. [2019-05-23 11:23:52,745 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:23:52,745 INFO L146 ILogger]: Start isEmpty. Operand 316 states and 332 transitions. [2019-05-23 11:23:52,747 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 292 [2019-05-23 11:23:52,747 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:52,747 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, 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 11:23:52,747 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:52,748 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:52,748 INFO L146 ILogger]: Analyzing trace with hash -1843621934, now seen corresponding path program 9 times [2019-05-23 11:23:52,748 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:52,748 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:52,749 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,749 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:52,749 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,774 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:53,149 INFO L146 ILogger]: Checked inductivity of 559 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-05-23 11:23:53,149 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:53,149 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 11:23:53,158 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:53,234 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:23:53,235 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:53,236 INFO L146 ILogger]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:53,241 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:53,394 INFO L146 ILogger]: Checked inductivity of 559 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-05-23 11:23:53,413 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:53,414 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-05-23 11:23:53,414 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:23:53,414 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:23:53,415 INFO L146 ILogger]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:23:53,415 INFO L146 ILogger]: Start difference. First operand 316 states and 332 transitions. Second operand 30 states. [2019-05-23 11:23:54,156 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:54,157 INFO L146 ILogger]: Finished difference Result 575 states and 608 transitions. [2019-05-23 11:23:54,157 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:23:54,157 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 291 [2019-05-23 11:23:54,157 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:54,159 INFO L146 ILogger]: With dead ends: 575 [2019-05-23 11:23:54,159 INFO L146 ILogger]: Without dead ends: 340 [2019-05-23 11:23:54,161 INFO L146 ILogger]: 0 DeclaredPredicates, 339 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:23:54,162 INFO L146 ILogger]: Start minimizeSevpa. Operand 340 states. [2019-05-23 11:23:54,167 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 340 to 330. [2019-05-23 11:23:54,167 INFO L146 ILogger]: Start removeUnreachable. Operand 330 states. [2019-05-23 11:23:54,168 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 330 states to 330 states and 346 transitions. [2019-05-23 11:23:54,168 INFO L146 ILogger]: Start accepts. Automaton has 330 states and 346 transitions. Word has length 291 [2019-05-23 11:23:54,169 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:54,169 INFO L146 ILogger]: Abstraction has 330 states and 346 transitions. [2019-05-23 11:23:54,169 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:23:54,169 INFO L146 ILogger]: Start isEmpty. Operand 330 states and 346 transitions. [2019-05-23 11:23:54,171 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 306 [2019-05-23 11:23:54,171 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:54,171 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, 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 11:23:54,171 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:54,171 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:54,172 INFO L146 ILogger]: Analyzing trace with hash -1379340423, now seen corresponding path program 10 times [2019-05-23 11:23:54,172 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:54,172 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:54,173 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:54,173 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:54,173 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:54,197 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:54,566 INFO L146 ILogger]: Checked inductivity of 652 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2019-05-23 11:23:54,566 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:54,566 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:23:54,579 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:54,781 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:54,781 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:54,783 INFO L146 ILogger]: Trace formula consists of 465 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:23:54,786 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:54,920 INFO L146 ILogger]: Checked inductivity of 652 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2019-05-23 11:23:54,939 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:54,940 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:23:54,940 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:23:54,940 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:23:54,941 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:23:54,941 INFO L146 ILogger]: Start difference. First operand 330 states and 346 transitions. Second operand 27 states. [2019-05-23 11:23:55,824 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:55,825 INFO L146 ILogger]: Finished difference Result 584 states and 616 transitions. [2019-05-23 11:23:55,825 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:23:55,825 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 305 [2019-05-23 11:23:55,826 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:55,827 INFO L146 ILogger]: With dead ends: 584 [2019-05-23 11:23:55,827 INFO L146 ILogger]: Without dead ends: 342 [2019-05-23 11:23:55,829 INFO L146 ILogger]: 0 DeclaredPredicates, 351 GetRequests, 304 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 11:23:55,829 INFO L146 ILogger]: Start minimizeSevpa. Operand 342 states. [2019-05-23 11:23:55,834 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 342 to 337. [2019-05-23 11:23:55,835 INFO L146 ILogger]: Start removeUnreachable. Operand 337 states. [2019-05-23 11:23:55,836 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 337 states to 337 states and 353 transitions. [2019-05-23 11:23:55,836 INFO L146 ILogger]: Start accepts. Automaton has 337 states and 353 transitions. Word has length 305 [2019-05-23 11:23:55,836 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:55,836 INFO L146 ILogger]: Abstraction has 337 states and 353 transitions. [2019-05-23 11:23:55,836 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:23:55,837 INFO L146 ILogger]: Start isEmpty. Operand 337 states and 353 transitions. [2019-05-23 11:23:55,840 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 313 [2019-05-23 11:23:55,840 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:55,841 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, 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 11:23:55,841 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:55,841 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:55,841 INFO L146 ILogger]: Analyzing trace with hash 1867270127, now seen corresponding path program 11 times [2019-05-23 11:23:55,841 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:55,842 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:55,842 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:55,842 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:55,843 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:55,878 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:58,195 INFO L146 ILogger]: Checked inductivity of 730 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2019-05-23 11:23:58,195 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:58,195 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 11:23:58,204 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:58,479 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:23:58,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:58,481 INFO L146 ILogger]: Trace formula consists of 475 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:23:58,486 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:58,755 INFO L146 ILogger]: Checked inductivity of 730 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2019-05-23 11:23:58,774 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:58,774 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2019-05-23 11:23:58,775 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:23:58,775 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:23:58,776 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:23:58,776 INFO L146 ILogger]: Start difference. First operand 337 states and 353 transitions. Second operand 36 states. [2019-05-23 11:24:04,300 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:04,300 INFO L146 ILogger]: Finished difference Result 663 states and 704 transitions. [2019-05-23 11:24:04,300 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:24:04,301 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 312 [2019-05-23 11:24:04,301 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:04,303 INFO L146 ILogger]: With dead ends: 663 [2019-05-23 11:24:04,303 INFO L146 ILogger]: Without dead ends: 421 [2019-05-23 11:24:04,306 INFO L146 ILogger]: 0 DeclaredPredicates, 370 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:24:04,307 INFO L146 ILogger]: Start minimizeSevpa. Operand 421 states. [2019-05-23 11:24:04,312 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 421 to 383. [2019-05-23 11:24:04,313 INFO L146 ILogger]: Start removeUnreachable. Operand 383 states. [2019-05-23 11:24:04,314 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 383 states to 383 states and 402 transitions. [2019-05-23 11:24:04,314 INFO L146 ILogger]: Start accepts. Automaton has 383 states and 402 transitions. Word has length 312 [2019-05-23 11:24:04,314 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:04,314 INFO L146 ILogger]: Abstraction has 383 states and 402 transitions. [2019-05-23 11:24:04,314 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:24:04,315 INFO L146 ILogger]: Start isEmpty. Operand 383 states and 402 transitions. [2019-05-23 11:24:04,316 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 353 [2019-05-23 11:24:04,316 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:04,317 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, 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 11:24:04,317 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:04,317 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:04,317 INFO L146 ILogger]: Analyzing trace with hash 1596496368, now seen corresponding path program 12 times [2019-05-23 11:24:04,318 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:04,318 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:04,318 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:04,318 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:04,319 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:04,347 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:04,907 INFO L146 ILogger]: Checked inductivity of 950 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2019-05-23 11:24:04,908 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:04,908 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 11:24:04,916 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:05,208 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:24:05,208 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:05,211 INFO L146 ILogger]: Trace formula consists of 435 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:05,215 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:06,275 INFO L146 ILogger]: Checked inductivity of 950 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked. [2019-05-23 11:24:06,295 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:06,295 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 38 [2019-05-23 11:24:06,296 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:24:06,296 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:24:06,297 INFO L146 ILogger]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:24:06,297 INFO L146 ILogger]: Start difference. First operand 383 states and 402 transitions. Second operand 38 states. [2019-05-23 11:24:07,272 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:07,273 INFO L146 ILogger]: Finished difference Result 688 states and 727 transitions. [2019-05-23 11:24:07,273 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:24:07,273 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 352 [2019-05-23 11:24:07,273 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:07,275 INFO L146 ILogger]: With dead ends: 688 [2019-05-23 11:24:07,275 INFO L146 ILogger]: Without dead ends: 407 [2019-05-23 11:24:07,278 INFO L146 ILogger]: 0 DeclaredPredicates, 414 GetRequests, 344 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 11:24:07,279 INFO L146 ILogger]: Start minimizeSevpa. Operand 407 states. [2019-05-23 11:24:07,284 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 407 to 397. [2019-05-23 11:24:07,284 INFO L146 ILogger]: Start removeUnreachable. Operand 397 states. [2019-05-23 11:24:07,285 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 397 states to 397 states and 416 transitions. [2019-05-23 11:24:07,285 INFO L146 ILogger]: Start accepts. Automaton has 397 states and 416 transitions. Word has length 352 [2019-05-23 11:24:07,286 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:07,286 INFO L146 ILogger]: Abstraction has 397 states and 416 transitions. [2019-05-23 11:24:07,286 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:24:07,286 INFO L146 ILogger]: Start isEmpty. Operand 397 states and 416 transitions. [2019-05-23 11:24:07,288 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 367 [2019-05-23 11:24:07,288 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:07,288 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, 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 11:24:07,289 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:07,289 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:07,289 INFO L146 ILogger]: Analyzing trace with hash 1067869003, now seen corresponding path program 13 times [2019-05-23 11:24:07,289 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:07,289 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:07,290 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:07,290 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:07,290 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:07,315 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:08,993 INFO L146 ILogger]: Checked inductivity of 1071 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-05-23 11:24:08,993 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:08,993 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:24:09,002 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:09,077 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:09,078 INFO L146 ILogger]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:24:09,083 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:09,314 INFO L146 ILogger]: Checked inductivity of 1071 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-05-23 11:24:09,334 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:09,334 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:24:09,334 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:24:09,335 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:24:09,335 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:24:09,335 INFO L146 ILogger]: Start difference. First operand 397 states and 416 transitions. Second operand 33 states. [2019-05-23 11:24:09,942 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:09,943 INFO L146 ILogger]: Finished difference Result 697 states and 735 transitions. [2019-05-23 11:24:09,943 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:24:09,943 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 366 [2019-05-23 11:24:09,943 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:09,945 INFO L146 ILogger]: With dead ends: 697 [2019-05-23 11:24:09,945 INFO L146 ILogger]: Without dead ends: 409 [2019-05-23 11:24:09,947 INFO L146 ILogger]: 0 DeclaredPredicates, 424 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:24:09,947 INFO L146 ILogger]: Start minimizeSevpa. Operand 409 states. [2019-05-23 11:24:09,952 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 409 to 404. [2019-05-23 11:24:09,953 INFO L146 ILogger]: Start removeUnreachable. Operand 404 states. [2019-05-23 11:24:09,953 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 404 states to 404 states and 423 transitions. [2019-05-23 11:24:09,954 INFO L146 ILogger]: Start accepts. Automaton has 404 states and 423 transitions. Word has length 366 [2019-05-23 11:24:09,954 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:09,954 INFO L146 ILogger]: Abstraction has 404 states and 423 transitions. [2019-05-23 11:24:09,954 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:24:09,954 INFO L146 ILogger]: Start isEmpty. Operand 404 states and 423 transitions. [2019-05-23 11:24:09,956 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 374 [2019-05-23 11:24:09,956 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:09,957 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, 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 11:24:09,957 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:09,957 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:09,957 INFO L146 ILogger]: Analyzing trace with hash 136937109, now seen corresponding path program 14 times [2019-05-23 11:24:09,958 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:09,958 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:09,958 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:09,958 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:09,959 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:09,987 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:10,947 INFO L146 ILogger]: Checked inductivity of 1170 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-05-23 11:24:10,947 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:10,947 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 11:24:10,956 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:11,037 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:11,038 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:11,039 INFO L146 ILogger]: Trace formula consists of 563 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:24:11,043 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:11,201 INFO L146 ILogger]: Checked inductivity of 1170 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-05-23 11:24:11,220 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:11,220 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:24:11,221 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:24:11,221 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:24:11,221 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:24:11,222 INFO L146 ILogger]: Start difference. First operand 404 states and 423 transitions. Second operand 35 states. [2019-05-23 11:24:11,882 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:11,882 INFO L146 ILogger]: Finished difference Result 704 states and 742 transitions. [2019-05-23 11:24:11,882 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:24:11,882 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 373 [2019-05-23 11:24:11,883 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:11,884 INFO L146 ILogger]: With dead ends: 704 [2019-05-23 11:24:11,884 INFO L146 ILogger]: Without dead ends: 416 [2019-05-23 11:24:11,886 INFO L146 ILogger]: 0 DeclaredPredicates, 435 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:24:11,887 INFO L146 ILogger]: Start minimizeSevpa. Operand 416 states. [2019-05-23 11:24:11,892 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 416 to 411. [2019-05-23 11:24:11,892 INFO L146 ILogger]: Start removeUnreachable. Operand 411 states. [2019-05-23 11:24:11,893 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 411 states to 411 states and 430 transitions. [2019-05-23 11:24:11,893 INFO L146 ILogger]: Start accepts. Automaton has 411 states and 430 transitions. Word has length 373 [2019-05-23 11:24:11,893 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:11,893 INFO L146 ILogger]: Abstraction has 411 states and 430 transitions. [2019-05-23 11:24:11,893 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:24:11,894 INFO L146 ILogger]: Start isEmpty. Operand 411 states and 430 transitions. [2019-05-23 11:24:11,896 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 381 [2019-05-23 11:24:11,897 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:11,897 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, 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 11:24:11,897 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:11,897 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:11,898 INFO L146 ILogger]: Analyzing trace with hash -48694261, now seen corresponding path program 15 times [2019-05-23 11:24:11,898 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:11,898 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:11,898 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:11,898 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:11,899 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:11,924 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:12,648 INFO L146 ILogger]: Checked inductivity of 1276 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-05-23 11:24:12,649 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:12,649 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 11:24:12,657 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:12,771 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:24:12,772 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:12,776 INFO L146 ILogger]: Trace formula consists of 463 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:12,780 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:13,047 INFO L146 ILogger]: Checked inductivity of 1276 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 1161 trivial. 0 not checked. [2019-05-23 11:24:13,066 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:13,067 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:24:13,067 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:24:13,068 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:24:13,068 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:24:13,068 INFO L146 ILogger]: Start difference. First operand 411 states and 430 transitions. Second operand 46 states. [2019-05-23 11:24:14,383 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:14,384 INFO L146 ILogger]: Finished difference Result 783 states and 830 transitions. [2019-05-23 11:24:14,384 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:24:14,384 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 380 [2019-05-23 11:24:14,385 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:14,387 INFO L146 ILogger]: With dead ends: 783 [2019-05-23 11:24:14,387 INFO L146 ILogger]: Without dead ends: 495 [2019-05-23 11:24:14,391 INFO L146 ILogger]: 0 DeclaredPredicates, 466 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:24:14,391 INFO L146 ILogger]: Start minimizeSevpa. Operand 495 states. [2019-05-23 11:24:14,397 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 495 to 457. [2019-05-23 11:24:14,397 INFO L146 ILogger]: Start removeUnreachable. Operand 457 states. [2019-05-23 11:24:14,398 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 457 states to 457 states and 479 transitions. [2019-05-23 11:24:14,398 INFO L146 ILogger]: Start accepts. Automaton has 457 states and 479 transitions. Word has length 380 [2019-05-23 11:24:14,398 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:14,398 INFO L146 ILogger]: Abstraction has 457 states and 479 transitions. [2019-05-23 11:24:14,398 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:24:14,399 INFO L146 ILogger]: Start isEmpty. Operand 457 states and 479 transitions. [2019-05-23 11:24:14,401 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 421 [2019-05-23 11:24:14,401 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:14,401 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, 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 11:24:14,402 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:14,402 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:14,402 INFO L146 ILogger]: Analyzing trace with hash -1578466040, now seen corresponding path program 16 times [2019-05-23 11:24:14,402 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:14,402 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:14,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:14,403 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:14,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:14,430 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:14,993 INFO L146 ILogger]: Checked inductivity of 1557 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2019-05-23 11:24:14,993 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:14,993 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:24:15,004 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:15,257 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:15,258 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:15,260 INFO L146 ILogger]: Trace formula consists of 631 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:24:15,264 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:15,582 INFO L146 ILogger]: Checked inductivity of 1557 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2019-05-23 11:24:15,602 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:15,602 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:24:15,603 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:24:15,603 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:24:15,604 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:24:15,604 INFO L146 ILogger]: Start difference. First operand 457 states and 479 transitions. Second operand 39 states. [2019-05-23 11:24:16,684 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:16,685 INFO L146 ILogger]: Finished difference Result 796 states and 840 transitions. [2019-05-23 11:24:16,691 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:24:16,691 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 420 [2019-05-23 11:24:16,692 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:16,694 INFO L146 ILogger]: With dead ends: 796 [2019-05-23 11:24:16,694 INFO L146 ILogger]: Without dead ends: 469 [2019-05-23 11:24:16,696 INFO L146 ILogger]: 0 DeclaredPredicates, 490 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:24:16,697 INFO L146 ILogger]: Start minimizeSevpa. Operand 469 states. [2019-05-23 11:24:16,702 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 469 to 464. [2019-05-23 11:24:16,703 INFO L146 ILogger]: Start removeUnreachable. Operand 464 states. [2019-05-23 11:24:16,704 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 464 states to 464 states and 486 transitions. [2019-05-23 11:24:16,704 INFO L146 ILogger]: Start accepts. Automaton has 464 states and 486 transitions. Word has length 420 [2019-05-23 11:24:16,704 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:16,704 INFO L146 ILogger]: Abstraction has 464 states and 486 transitions. [2019-05-23 11:24:16,704 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:24:16,705 INFO L146 ILogger]: Start isEmpty. Operand 464 states and 486 transitions. [2019-05-23 11:24:16,707 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 428 [2019-05-23 11:24:16,707 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:16,708 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, 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 11:24:16,708 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:16,708 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:16,709 INFO L146 ILogger]: Analyzing trace with hash -510917422, now seen corresponding path program 17 times [2019-05-23 11:24:16,709 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:16,709 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:16,710 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:16,710 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:16,710 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:16,739 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:18,361 INFO L146 ILogger]: Checked inductivity of 1677 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2019-05-23 11:24:18,362 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:18,362 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 11:24:18,372 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:19,393 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:24:19,394 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:19,398 INFO L146 ILogger]: Trace formula consists of 641 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:24:19,402 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:19,581 INFO L146 ILogger]: Checked inductivity of 1677 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2019-05-23 11:24:19,614 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:19,614 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:24:19,615 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:24:19,615 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:24:19,616 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:19,616 INFO L146 ILogger]: Start difference. First operand 464 states and 486 transitions. Second operand 41 states. [2019-05-23 11:24:20,644 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:20,644 INFO L146 ILogger]: Finished difference Result 803 states and 847 transitions. [2019-05-23 11:24:20,644 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:24:20,644 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 427 [2019-05-23 11:24:20,645 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:20,647 INFO L146 ILogger]: With dead ends: 803 [2019-05-23 11:24:20,647 INFO L146 ILogger]: Without dead ends: 476 [2019-05-23 11:24:20,649 INFO L146 ILogger]: 0 DeclaredPredicates, 501 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:24:20,650 INFO L146 ILogger]: Start minimizeSevpa. Operand 476 states. [2019-05-23 11:24:20,655 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 476 to 471. [2019-05-23 11:24:20,655 INFO L146 ILogger]: Start removeUnreachable. Operand 471 states. [2019-05-23 11:24:20,656 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 471 states to 471 states and 493 transitions. [2019-05-23 11:24:20,656 INFO L146 ILogger]: Start accepts. Automaton has 471 states and 493 transitions. Word has length 427 [2019-05-23 11:24:20,656 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:20,657 INFO L146 ILogger]: Abstraction has 471 states and 493 transitions. [2019-05-23 11:24:20,657 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:24:20,657 INFO L146 ILogger]: Start isEmpty. Operand 471 states and 493 transitions. [2019-05-23 11:24:20,659 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 435 [2019-05-23 11:24:20,659 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:20,660 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, 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 11:24:20,660 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:20,660 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:20,660 INFO L146 ILogger]: Analyzing trace with hash -1480913464, now seen corresponding path program 18 times [2019-05-23 11:24:20,661 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:20,661 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:20,661 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:20,662 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:20,662 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:20,691 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:21,705 INFO L146 ILogger]: Checked inductivity of 1804 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2019-05-23 11:24:21,705 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:21,706 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 11:24:21,715 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:22,043 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:24:22,043 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:22,046 INFO L146 ILogger]: Trace formula consists of 513 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:22,051 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:22,424 INFO L146 ILogger]: Checked inductivity of 1804 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1729 trivial. 0 not checked. [2019-05-23 11:24:22,444 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:22,444 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 13] total 52 [2019-05-23 11:24:22,445 INFO L146 ILogger]: Interpolant automaton has 52 states [2019-05-23 11:24:22,445 INFO L146 ILogger]: Constructing interpolant automaton starting with 52 interpolants. [2019-05-23 11:24:22,446 INFO L146 ILogger]: CoverageRelationStatistics Valid=487, Invalid=2165, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:24:22,446 INFO L146 ILogger]: Start difference. First operand 471 states and 493 transitions. Second operand 52 states. [2019-05-23 11:24:24,008 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:24,008 INFO L146 ILogger]: Finished difference Result 817 states and 862 transitions. [2019-05-23 11:24:24,009 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-05-23 11:24:24,009 INFO L146 ILogger]: Start accepts. Automaton has 52 states. Word has length 434 [2019-05-23 11:24:24,009 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:24,011 INFO L146 ILogger]: With dead ends: 817 [2019-05-23 11:24:24,011 INFO L146 ILogger]: Without dead ends: 490 [2019-05-23 11:24:24,012 INFO L146 ILogger]: 0 DeclaredPredicates, 522 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2175, Invalid=7725, Unknown=0, NotChecked=0, Total=9900 [2019-05-23 11:24:24,013 INFO L146 ILogger]: Start minimizeSevpa. Operand 490 states. [2019-05-23 11:24:24,018 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 490 to 485. [2019-05-23 11:24:24,018 INFO L146 ILogger]: Start removeUnreachable. Operand 485 states. [2019-05-23 11:24:24,019 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 485 states to 485 states and 507 transitions. [2019-05-23 11:24:24,019 INFO L146 ILogger]: Start accepts. Automaton has 485 states and 507 transitions. Word has length 434 [2019-05-23 11:24:24,019 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:24,020 INFO L146 ILogger]: Abstraction has 485 states and 507 transitions. [2019-05-23 11:24:24,020 INFO L146 ILogger]: Interpolant automaton has 52 states. [2019-05-23 11:24:24,020 INFO L146 ILogger]: Start isEmpty. Operand 485 states and 507 transitions. [2019-05-23 11:24:24,022 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 449 [2019-05-23 11:24:24,022 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:24,023 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, 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 11:24:24,023 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:24,023 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:24,023 INFO L146 ILogger]: Analyzing trace with hash 1322911855, now seen corresponding path program 19 times [2019-05-23 11:24:24,024 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:24,024 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:24,024 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:24,025 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:24,025 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:24,053 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:24,315 INFO L146 ILogger]: Checked inductivity of 1974 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2019-05-23 11:24:24,316 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:24,316 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 11:24:24,325 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:24,429 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:24,432 INFO L146 ILogger]: Trace formula consists of 671 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:24:24,438 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:24,869 INFO L146 ILogger]: Checked inductivity of 1974 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2019-05-23 11:24:24,888 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:24,888 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:24:24,888 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:24:24,889 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:24:24,889 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:24:24,889 INFO L146 ILogger]: Start difference. First operand 485 states and 507 transitions. Second operand 17 states. [2019-05-23 11:24:25,872 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:25,872 INFO L146 ILogger]: Finished difference Result 804 states and 849 transitions. [2019-05-23 11:24:25,875 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:24:25,875 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 448 [2019-05-23 11:24:25,876 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:25,878 INFO L146 ILogger]: With dead ends: 804 [2019-05-23 11:24:25,878 INFO L146 ILogger]: Without dead ends: 557 [2019-05-23 11:24:25,879 INFO L146 ILogger]: 0 DeclaredPredicates, 474 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:24:25,880 INFO L146 ILogger]: Start minimizeSevpa. Operand 557 states. [2019-05-23 11:24:25,885 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 557 to 524. [2019-05-23 11:24:25,886 INFO L146 ILogger]: Start removeUnreachable. Operand 524 states. [2019-05-23 11:24:25,887 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 524 states to 524 states and 549 transitions. [2019-05-23 11:24:25,887 INFO L146 ILogger]: Start accepts. Automaton has 524 states and 549 transitions. Word has length 448 [2019-05-23 11:24:25,887 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:25,887 INFO L146 ILogger]: Abstraction has 524 states and 549 transitions. [2019-05-23 11:24:25,887 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:24:25,888 INFO L146 ILogger]: Start isEmpty. Operand 524 states and 549 transitions. [2019-05-23 11:24:25,891 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 482 [2019-05-23 11:24:25,891 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:25,891 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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 11:24:25,891 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:25,892 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:25,892 INFO L146 ILogger]: Analyzing trace with hash 762801018, now seen corresponding path program 20 times [2019-05-23 11:24:25,892 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:25,892 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:25,893 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:25,893 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:25,893 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:25,924 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:26,456 INFO L146 ILogger]: Checked inductivity of 2175 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 1937 trivial. 0 not checked. [2019-05-23 11:24:26,456 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:26,456 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 11:24:26,465 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:26,572 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:26,573 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:26,574 INFO L146 ILogger]: Trace formula consists of 719 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:24:26,577 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:26,719 INFO L146 ILogger]: Checked inductivity of 2175 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 1937 trivial. 0 not checked. [2019-05-23 11:24:26,738 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:26,738 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:24:26,739 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:24:26,739 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:24:26,739 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:24:26,739 INFO L146 ILogger]: Start difference. First operand 524 states and 549 transitions. Second operand 19 states. [2019-05-23 11:24:27,198 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:27,199 INFO L146 ILogger]: Finished difference Result 869 states and 919 transitions. [2019-05-23 11:24:27,199 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:24:27,199 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 481 [2019-05-23 11:24:27,200 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:27,203 INFO L146 ILogger]: With dead ends: 869 [2019-05-23 11:24:27,204 INFO L146 ILogger]: Without dead ends: 596 [2019-05-23 11:24:27,204 INFO L146 ILogger]: 0 DeclaredPredicates, 511 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:24:27,205 INFO L146 ILogger]: Start minimizeSevpa. Operand 596 states. [2019-05-23 11:24:27,211 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 596 to 563. [2019-05-23 11:24:27,212 INFO L146 ILogger]: Start removeUnreachable. Operand 563 states. [2019-05-23 11:24:27,213 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 563 states to 563 states and 591 transitions. [2019-05-23 11:24:27,213 INFO L146 ILogger]: Start accepts. Automaton has 563 states and 591 transitions. Word has length 481 [2019-05-23 11:24:27,213 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:27,214 INFO L146 ILogger]: Abstraction has 563 states and 591 transitions. [2019-05-23 11:24:27,214 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:24:27,214 INFO L146 ILogger]: Start isEmpty. Operand 563 states and 591 transitions. [2019-05-23 11:24:27,217 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 515 [2019-05-23 11:24:27,217 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:27,218 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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 11:24:27,218 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:27,218 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:27,218 INFO L146 ILogger]: Analyzing trace with hash 1159903055, now seen corresponding path program 21 times [2019-05-23 11:24:27,219 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:27,219 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:27,220 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:27,220 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:27,220 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:27,255 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:27,901 INFO L146 ILogger]: Checked inductivity of 2409 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 2093 trivial. 0 not checked. [2019-05-23 11:24:27,901 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:27,902 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 11:24:27,911 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:28,094 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:24:28,095 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:28,097 INFO L146 ILogger]: Trace formula consists of 531 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:24:28,101 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:28,421 INFO L146 ILogger]: Checked inductivity of 2409 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2298 trivial. 0 not checked. [2019-05-23 11:24:28,441 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:28,441 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2019-05-23 11:24:28,441 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:24:28,442 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:24:28,442 INFO L146 ILogger]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:24:28,442 INFO L146 ILogger]: Start difference. First operand 563 states and 591 transitions. Second operand 32 states. [2019-05-23 11:24:29,328 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:29,329 INFO L146 ILogger]: Finished difference Result 946 states and 1002 transitions. [2019-05-23 11:24:29,329 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:24:29,329 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 514 [2019-05-23 11:24:29,330 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:29,332 INFO L146 ILogger]: With dead ends: 946 [2019-05-23 11:24:29,332 INFO L146 ILogger]: Without dead ends: 647 [2019-05-23 11:24:29,333 INFO L146 ILogger]: 0 DeclaredPredicates, 576 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=645, Invalid=2895, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:24:29,334 INFO L146 ILogger]: Start minimizeSevpa. Operand 647 states. [2019-05-23 11:24:29,340 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 647 to 609. [2019-05-23 11:24:29,341 INFO L146 ILogger]: Start removeUnreachable. Operand 609 states. [2019-05-23 11:24:29,342 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 609 states to 609 states and 640 transitions. [2019-05-23 11:24:29,342 INFO L146 ILogger]: Start accepts. Automaton has 609 states and 640 transitions. Word has length 514 [2019-05-23 11:24:29,342 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:29,342 INFO L146 ILogger]: Abstraction has 609 states and 640 transitions. [2019-05-23 11:24:29,343 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:24:29,343 INFO L146 ILogger]: Start isEmpty. Operand 609 states and 640 transitions. [2019-05-23 11:24:29,346 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 555 [2019-05-23 11:24:29,346 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:29,347 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:29,347 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:29,347 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:29,347 INFO L146 ILogger]: Analyzing trace with hash 2007569259, now seen corresponding path program 22 times [2019-05-23 11:24:29,347 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:29,347 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:29,348 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:29,348 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:29,348 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:29,389 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:29,757 INFO L146 ILogger]: Checked inductivity of 2719 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 2314 trivial. 0 not checked. [2019-05-23 11:24:29,758 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:29,758 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 11:24:29,767 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:30,071 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:30,072 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:30,075 INFO L146 ILogger]: Trace formula consists of 825 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:24:30,080 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:30,252 INFO L146 ILogger]: Checked inductivity of 2719 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 2314 trivial. 0 not checked. [2019-05-23 11:24:30,272 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:30,273 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:24:30,273 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:24:30,273 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:24:30,274 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:24:30,274 INFO L146 ILogger]: Start difference. First operand 609 states and 640 transitions. Second operand 23 states. [2019-05-23 11:24:31,057 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:31,057 INFO L146 ILogger]: Finished difference Result 1013 states and 1073 transitions. [2019-05-23 11:24:31,057 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:24:31,057 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 554 [2019-05-23 11:24:31,058 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:31,061 INFO L146 ILogger]: With dead ends: 1013 [2019-05-23 11:24:31,061 INFO L146 ILogger]: Without dead ends: 681 [2019-05-23 11:24:31,062 INFO L146 ILogger]: 0 DeclaredPredicates, 592 GetRequests, 553 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 11:24:31,062 INFO L146 ILogger]: Start minimizeSevpa. Operand 681 states. [2019-05-23 11:24:31,070 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 681 to 648. [2019-05-23 11:24:31,070 INFO L146 ILogger]: Start removeUnreachable. Operand 648 states. [2019-05-23 11:24:31,071 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 648 states to 648 states and 682 transitions. [2019-05-23 11:24:31,072 INFO L146 ILogger]: Start accepts. Automaton has 648 states and 682 transitions. Word has length 554 [2019-05-23 11:24:31,072 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:31,072 INFO L146 ILogger]: Abstraction has 648 states and 682 transitions. [2019-05-23 11:24:31,072 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:24:31,072 INFO L146 ILogger]: Start isEmpty. Operand 648 states and 682 transitions. [2019-05-23 11:24:31,076 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 588 [2019-05-23 11:24:31,076 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:31,077 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:31,077 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:31,077 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:31,077 INFO L146 ILogger]: Analyzing trace with hash 1285521074, now seen corresponding path program 23 times [2019-05-23 11:24:31,077 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:31,078 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:31,078 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:31,078 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:31,079 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:31,116 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:32,620 INFO L146 ILogger]: Checked inductivity of 3019 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2019-05-23 11:24:32,620 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:32,620 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 11:24:32,632 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1