java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_copy5_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:52,461 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:52,463 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:52,482 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:52,483 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:52,484 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:52,485 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:52,487 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:52,489 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:52,490 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:52,491 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:52,491 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:52,492 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:52,493 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:52,494 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:52,495 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:52,496 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:52,498 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:52,500 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:52,502 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:52,503 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:52,504 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:52,507 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:16:52,507 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:16:52,508 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:16:52,509 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:16:52,509 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:16:52,510 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:16:52,511 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:16:52,512 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:16:52,512 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:16:52,513 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:16:52,514 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:16:52,515 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:52,515 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:52,516 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:52,516 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:52,517 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:52,518 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:52,518 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:52,534 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:52,535 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:52,536 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:52,536 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:52,536 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:52,536 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:52,537 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:52,537 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:52,537 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:52,537 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:52,537 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:52,538 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:52,538 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:52,538 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:52,538 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:52,538 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:52,539 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:52,539 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:52,539 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:52,539 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:52,540 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:52,540 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:52,540 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:52,540 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:52,540 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:52,541 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:52,541 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:52,541 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:52,541 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:16:52,585 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:52,598 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:52,604 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:52,605 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:52,606 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:52,606 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy5_true-unreach-call_ground.i [2019-05-23 11:16:52,666 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50f976df/f5d78ac249954b1488052423ee750370/FLAG9df8cc2f7 [2019-05-23 11:16:53,124 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:53,125 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy5_true-unreach-call_ground.i [2019-05-23 11:16:53,130 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50f976df/f5d78ac249954b1488052423ee750370/FLAG9df8cc2f7 [2019-05-23 11:16:53,518 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50f976df/f5d78ac249954b1488052423ee750370 [2019-05-23 11:16:53,529 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:53,531 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:53,532 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:53,532 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:53,536 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:53,537 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:53,540 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32eb4137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53, skipping insertion in model container [2019-05-23 11:16:53,540 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:53,548 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:53,568 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:53,808 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:53,813 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:53,855 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:53,886 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:53,886 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53 WrapperNode [2019-05-23 11:16:53,886 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:53,887 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:53,888 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:53,888 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:53,898 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:53,915 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:53,942 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:53,943 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:53,944 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:53,944 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:53,955 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:53,955 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:53,958 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:53,958 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:53,966 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:54,070 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:54,072 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (1/1) ... [2019-05-23 11:16:54,075 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:54,076 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:54,076 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:54,076 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:54,077 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:16:54,140 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:16:54,140 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:54,141 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:54,141 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:54,141 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:54,141 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:54,742 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:54,743 INFO L146 ILogger]: Removed 13 assume(true) statements. [2019-05-23 11:16:54,744 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:54 BoogieIcfgContainer [2019-05-23 11:16:54,744 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:54,745 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:54,746 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:54,749 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:54,749 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:53" (1/3) ... [2019-05-23 11:16:54,750 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750d3ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:54, skipping insertion in model container [2019-05-23 11:16:54,750 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:53" (2/3) ... [2019-05-23 11:16:54,751 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750d3ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:54, skipping insertion in model container [2019-05-23 11:16:54,751 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:54" (3/3) ... [2019-05-23 11:16:54,753 INFO L146 ILogger]: Analyzing ICFG standard_copy5_true-unreach-call_ground.i [2019-05-23 11:16:54,763 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:54,771 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:16:54,785 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:16:54,815 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:54,816 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:54,816 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:54,817 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:54,817 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:54,817 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:54,817 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:54,818 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:54,818 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:54,835 INFO L146 ILogger]: Start isEmpty. Operand 92 states. [2019-05-23 11:16:54,843 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:16:54,844 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:54,845 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] [2019-05-23 11:16:54,847 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:54,852 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:54,853 INFO L146 ILogger]: Analyzing trace with hash 1790694884, now seen corresponding path program 1 times [2019-05-23 11:16:54,854 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:54,854 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:54,892 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,892 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:54,892 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,945 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,053 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:55,056 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:55,056 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:55,060 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:55,074 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:55,075 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:55,078 INFO L146 ILogger]: Start difference. First operand 92 states. Second operand 3 states. [2019-05-23 11:16:55,153 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:55,153 INFO L146 ILogger]: Finished difference Result 171 states and 199 transitions. [2019-05-23 11:16:55,154 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:55,155 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 34 [2019-05-23 11:16:55,156 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:55,167 INFO L146 ILogger]: With dead ends: 171 [2019-05-23 11:16:55,167 INFO L146 ILogger]: Without dead ends: 82 [2019-05-23 11:16:55,170 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:55,188 INFO L146 ILogger]: Start minimizeSevpa. Operand 82 states. [2019-05-23 11:16:55,208 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 82 to 77. [2019-05-23 11:16:55,210 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:16:55,212 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2019-05-23 11:16:55,214 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 34 [2019-05-23 11:16:55,214 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:55,214 INFO L146 ILogger]: Abstraction has 77 states and 83 transitions. [2019-05-23 11:16:55,214 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:55,215 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 83 transitions. [2019-05-23 11:16:55,216 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:16:55,216 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:55,217 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] [2019-05-23 11:16:55,217 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:55,217 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:55,217 INFO L146 ILogger]: Analyzing trace with hash 1925961058, now seen corresponding path program 1 times [2019-05-23 11:16:55,218 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:55,218 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:55,219 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,219 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:55,219 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,264 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,482 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:55,482 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:55,482 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:55,503 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:55,554 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,556 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:16:55,562 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:55,606 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:16:55,635 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:16:55,635 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:16:55,636 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:16:55,636 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:16:55,639 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:16:55,639 INFO L146 ILogger]: Start difference. First operand 77 states and 83 transitions. Second operand 6 states. [2019-05-23 11:16:56,102 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,102 INFO L146 ILogger]: Finished difference Result 176 states and 193 transitions. [2019-05-23 11:16:56,104 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:16:56,104 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 41 [2019-05-23 11:16:56,105 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,106 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:16:56,106 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:16:56,108 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 41 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 11:16:56,108 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:16:56,117 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 89. [2019-05-23 11:16:56,117 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:16:56,119 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2019-05-23 11:16:56,120 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 41 [2019-05-23 11:16:56,120 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,120 INFO L146 ILogger]: Abstraction has 89 states and 95 transitions. [2019-05-23 11:16:56,120 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:16:56,121 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 95 transitions. [2019-05-23 11:16:56,123 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 84 [2019-05-23 11:16:56,123 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,123 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] [2019-05-23 11:16:56,124 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,124 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,124 INFO L146 ILogger]: Analyzing trace with hash -2110236174, now seen corresponding path program 1 times [2019-05-23 11:16:56,124 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,125 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:56,126 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,126 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:56,126 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,153 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,273 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:16:56,273 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:56,273 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:56,291 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:56,330 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,331 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:56,335 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:56,506 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:16:56,539 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:56,540 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:16:56,540 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:16:56,541 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:16:56,541 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:16:56,541 INFO L146 ILogger]: Start difference. First operand 89 states and 95 transitions. Second operand 10 states. [2019-05-23 11:16:57,279 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:57,279 INFO L146 ILogger]: Finished difference Result 195 states and 208 transitions. [2019-05-23 11:16:57,281 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:16:57,281 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 83 [2019-05-23 11:16:57,282 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:57,285 INFO L146 ILogger]: With dead ends: 195 [2019-05-23 11:16:57,285 INFO L146 ILogger]: Without dead ends: 133 [2019-05-23 11:16:57,286 INFO L146 ILogger]: 0 DeclaredPredicates, 93 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:16:57,287 INFO L146 ILogger]: Start minimizeSevpa. Operand 133 states. [2019-05-23 11:16:57,309 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 133 to 103. [2019-05-23 11:16:57,309 INFO L146 ILogger]: Start removeUnreachable. Operand 103 states. [2019-05-23 11:16:57,312 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2019-05-23 11:16:57,312 INFO L146 ILogger]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 83 [2019-05-23 11:16:57,316 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:57,316 INFO L146 ILogger]: Abstraction has 103 states and 109 transitions. [2019-05-23 11:16:57,316 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:16:57,316 INFO L146 ILogger]: Start isEmpty. Operand 103 states and 109 transitions. [2019-05-23 11:16:57,318 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 98 [2019-05-23 11:16:57,318 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:57,319 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:57,319 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:57,319 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:57,320 INFO L146 ILogger]: Analyzing trace with hash 103128496, now seen corresponding path program 2 times [2019-05-23 11:16:57,320 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:57,320 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,323 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,323 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:57,323 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,370 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,571 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:16:57,571 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,572 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:57,583 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:57,644 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:57,644 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,646 INFO L146 ILogger]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:57,651 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:57,829 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:16:57,848 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:57,848 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:16:57,849 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:57,849 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:57,850 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:57,850 INFO L146 ILogger]: Start difference. First operand 103 states and 109 transitions. Second operand 12 states. [2019-05-23 11:16:58,646 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:58,646 INFO L146 ILogger]: Finished difference Result 211 states and 224 transitions. [2019-05-23 11:16:58,647 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:16:58,647 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 97 [2019-05-23 11:16:58,647 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:58,649 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:16:58,649 INFO L146 ILogger]: Without dead ends: 142 [2019-05-23 11:16:58,651 INFO L146 ILogger]: 0 DeclaredPredicates, 109 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:16:58,651 INFO L146 ILogger]: Start minimizeSevpa. Operand 142 states. [2019-05-23 11:16:58,659 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 142 to 117. [2019-05-23 11:16:58,659 INFO L146 ILogger]: Start removeUnreachable. Operand 117 states. [2019-05-23 11:16:58,660 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2019-05-23 11:16:58,660 INFO L146 ILogger]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 97 [2019-05-23 11:16:58,660 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:58,661 INFO L146 ILogger]: Abstraction has 117 states and 123 transitions. [2019-05-23 11:16:58,661 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:58,661 INFO L146 ILogger]: Start isEmpty. Operand 117 states and 123 transitions. [2019-05-23 11:16:58,662 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 112 [2019-05-23 11:16:58,663 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:58,663 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:58,663 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:58,663 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:58,664 INFO L146 ILogger]: Analyzing trace with hash 183417241, now seen corresponding path program 3 times [2019-05-23 11:16:58,664 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:58,664 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:58,665 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,665 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:58,665 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,698 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,807 INFO L146 ILogger]: Checked inductivity of 67 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:16:58,808 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:58,808 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:58,822 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:58,871 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:16:58,872 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,873 INFO L146 ILogger]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:16:58,876 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:58,918 INFO L146 ILogger]: Checked inductivity of 67 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:16:58,939 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:58,939 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:16:58,940 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:16:58,940 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:16:58,941 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:58,941 INFO L146 ILogger]: Start difference. First operand 117 states and 123 transitions. Second operand 7 states. [2019-05-23 11:16:59,116 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:59,117 INFO L146 ILogger]: Finished difference Result 173 states and 182 transitions. [2019-05-23 11:16:59,117 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:16:59,117 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 111 [2019-05-23 11:16:59,118 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:59,120 INFO L146 ILogger]: With dead ends: 173 [2019-05-23 11:16:59,120 INFO L146 ILogger]: Without dead ends: 139 [2019-05-23 11:16:59,121 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:59,121 INFO L146 ILogger]: Start minimizeSevpa. Operand 139 states. [2019-05-23 11:16:59,127 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 139 to 124. [2019-05-23 11:16:59,127 INFO L146 ILogger]: Start removeUnreachable. Operand 124 states. [2019-05-23 11:16:59,128 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 124 states to 124 states and 130 transitions. [2019-05-23 11:16:59,128 INFO L146 ILogger]: Start accepts. Automaton has 124 states and 130 transitions. Word has length 111 [2019-05-23 11:16:59,129 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:59,129 INFO L146 ILogger]: Abstraction has 124 states and 130 transitions. [2019-05-23 11:16:59,129 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:16:59,129 INFO L146 ILogger]: Start isEmpty. Operand 124 states and 130 transitions. [2019-05-23 11:16:59,131 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:16:59,131 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:59,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:59,132 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:59,132 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:59,132 INFO L146 ILogger]: Analyzing trace with hash 1874814239, now seen corresponding path program 4 times [2019-05-23 11:16:59,132 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:59,132 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:59,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,133 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:59,134 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,153 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,342 INFO L146 ILogger]: Checked inductivity of 75 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-05-23 11:16:59,342 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:59,342 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:59,353 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:59,453 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:59,453 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,454 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:59,458 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:59,557 INFO L146 ILogger]: Checked inductivity of 75 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-05-23 11:16:59,576 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:59,576 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2019-05-23 11:16:59,577 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:16:59,577 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:16:59,577 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:16:59,577 INFO L146 ILogger]: Start difference. First operand 124 states and 130 transitions. Second operand 14 states. [2019-05-23 11:17:00,096 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:00,096 INFO L146 ILogger]: Finished difference Result 236 states and 249 transitions. [2019-05-23 11:17:00,097 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:17:00,097 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 118 [2019-05-23 11:17:00,097 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:00,099 INFO L146 ILogger]: With dead ends: 236 [2019-05-23 11:17:00,099 INFO L146 ILogger]: Without dead ends: 153 [2019-05-23 11:17:00,100 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:17:00,101 INFO L146 ILogger]: Start minimizeSevpa. Operand 153 states. [2019-05-23 11:17:00,107 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 153 to 138. [2019-05-23 11:17:00,107 INFO L146 ILogger]: Start removeUnreachable. Operand 138 states. [2019-05-23 11:17:00,108 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 138 states to 138 states and 144 transitions. [2019-05-23 11:17:00,108 INFO L146 ILogger]: Start accepts. Automaton has 138 states and 144 transitions. Word has length 118 [2019-05-23 11:17:00,109 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:00,109 INFO L146 ILogger]: Abstraction has 138 states and 144 transitions. [2019-05-23 11:17:00,109 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:17:00,109 INFO L146 ILogger]: Start isEmpty. Operand 138 states and 144 transitions. [2019-05-23 11:17:00,111 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:17:00,111 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:00,111 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2019-05-23 11:17:00,111 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:00,112 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:00,112 INFO L146 ILogger]: Analyzing trace with hash -1161058794, now seen corresponding path program 5 times [2019-05-23 11:17:00,112 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:00,112 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:00,113 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:00,113 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:00,113 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:00,132 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,389 INFO L146 ILogger]: Checked inductivity of 112 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:17:00,390 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:00,390 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:17:00,410 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:00,944 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:17:00,944 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,945 INFO L146 ILogger]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:00,949 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:01,033 INFO L146 ILogger]: Checked inductivity of 112 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-05-23 11:17:01,064 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:01,064 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2019-05-23 11:17:01,064 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:17:01,065 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:17:01,065 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:17:01,065 INFO L146 ILogger]: Start difference. First operand 138 states and 144 transitions. Second operand 9 states. [2019-05-23 11:17:01,285 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:01,285 INFO L146 ILogger]: Finished difference Result 219 states and 230 transitions. [2019-05-23 11:17:01,286 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:17:01,286 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 132 [2019-05-23 11:17:01,287 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:01,288 INFO L146 ILogger]: With dead ends: 219 [2019-05-23 11:17:01,288 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:17:01,289 INFO L146 ILogger]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:17:01,289 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:17:01,294 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 152. [2019-05-23 11:17:01,295 INFO L146 ILogger]: Start removeUnreachable. Operand 152 states. [2019-05-23 11:17:01,295 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 152 states to 152 states and 158 transitions. [2019-05-23 11:17:01,296 INFO L146 ILogger]: Start accepts. Automaton has 152 states and 158 transitions. Word has length 132 [2019-05-23 11:17:01,296 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:01,296 INFO L146 ILogger]: Abstraction has 152 states and 158 transitions. [2019-05-23 11:17:01,296 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:17:01,296 INFO L146 ILogger]: Start isEmpty. Operand 152 states and 158 transitions. [2019-05-23 11:17:01,298 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 147 [2019-05-23 11:17:01,298 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:01,298 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:17:01,299 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:01,299 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:01,299 INFO L146 ILogger]: Analyzing trace with hash 1025955169, now seen corresponding path program 6 times [2019-05-23 11:17:01,299 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:01,299 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:01,300 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,300 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:01,300 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,325 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,500 INFO L146 ILogger]: Checked inductivity of 135 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:17:01,500 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:01,501 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 11:17:01,511 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:01,647 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:17:01,647 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,648 INFO L146 ILogger]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:01,651 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:01,841 INFO L146 ILogger]: Checked inductivity of 135 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:17:01,859 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:01,860 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2019-05-23 11:17:01,860 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:17:01,860 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:17:01,861 INFO L146 ILogger]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:17:01,861 INFO L146 ILogger]: Start difference. First operand 152 states and 158 transitions. Second operand 18 states. [2019-05-23 11:17:02,470 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:02,470 INFO L146 ILogger]: Finished difference Result 280 states and 293 transitions. [2019-05-23 11:17:02,470 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:17:02,471 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 146 [2019-05-23 11:17:02,471 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:02,472 INFO L146 ILogger]: With dead ends: 280 [2019-05-23 11:17:02,472 INFO L146 ILogger]: Without dead ends: 176 [2019-05-23 11:17:02,473 INFO L146 ILogger]: 0 DeclaredPredicates, 172 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:17:02,474 INFO L146 ILogger]: Start minimizeSevpa. Operand 176 states. [2019-05-23 11:17:02,478 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 176 to 166. [2019-05-23 11:17:02,478 INFO L146 ILogger]: Start removeUnreachable. Operand 166 states. [2019-05-23 11:17:02,479 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2019-05-23 11:17:02,479 INFO L146 ILogger]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 146 [2019-05-23 11:17:02,479 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:02,480 INFO L146 ILogger]: Abstraction has 166 states and 172 transitions. [2019-05-23 11:17:02,480 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:17:02,480 INFO L146 ILogger]: Start isEmpty. Operand 166 states and 172 transitions. [2019-05-23 11:17:02,482 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 161 [2019-05-23 11:17:02,482 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:02,482 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, 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] [2019-05-23 11:17:02,482 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:02,482 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:02,483 INFO L146 ILogger]: Analyzing trace with hash -1442055873, now seen corresponding path program 7 times [2019-05-23 11:17:02,483 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:02,483 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:02,484 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:02,484 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:02,484 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:02,508 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,704 INFO L146 ILogger]: Checked inductivity of 186 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:17:02,705 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:02,705 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:02,715 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:02,754 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,755 INFO L146 ILogger]: Trace formula consists of 273 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:17:02,757 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:02,811 INFO L146 ILogger]: Checked inductivity of 186 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:17:02,829 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:02,830 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:17:02,830 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:17:02,831 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:17:02,831 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:17:02,831 INFO L146 ILogger]: Start difference. First operand 166 states and 172 transitions. Second operand 17 states. [2019-05-23 11:17:03,056 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:03,056 INFO L146 ILogger]: Finished difference Result 289 states and 301 transitions. [2019-05-23 11:17:03,060 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:17:03,060 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 160 [2019-05-23 11:17:03,060 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:03,061 INFO L146 ILogger]: With dead ends: 289 [2019-05-23 11:17:03,062 INFO L146 ILogger]: Without dead ends: 178 [2019-05-23 11:17:03,063 INFO L146 ILogger]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:17:03,063 INFO L146 ILogger]: Start minimizeSevpa. Operand 178 states. [2019-05-23 11:17:03,067 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 178 to 173. [2019-05-23 11:17:03,067 INFO L146 ILogger]: Start removeUnreachable. Operand 173 states. [2019-05-23 11:17:03,068 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 173 states to 173 states and 179 transitions. [2019-05-23 11:17:03,068 INFO L146 ILogger]: Start accepts. Automaton has 173 states and 179 transitions. Word has length 160 [2019-05-23 11:17:03,068 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:03,069 INFO L146 ILogger]: Abstraction has 173 states and 179 transitions. [2019-05-23 11:17:03,069 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:17:03,069 INFO L146 ILogger]: Start isEmpty. Operand 173 states and 179 transitions. [2019-05-23 11:17:03,071 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:17:03,071 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:03,071 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:03,071 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:03,072 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:03,072 INFO L146 ILogger]: Analyzing trace with hash 100413673, now seen corresponding path program 8 times [2019-05-23 11:17:03,072 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:03,072 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:03,073 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,073 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:03,073 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,097 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:03,475 INFO L146 ILogger]: Checked inductivity of 229 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:17:03,475 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:03,475 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:03,484 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:03,533 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:03,533 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:03,534 INFO L146 ILogger]: Trace formula consists of 283 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:17:03,536 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:03,583 INFO L146 ILogger]: Checked inductivity of 229 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:17:03,613 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:03,613 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:17:03,613 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:17:03,614 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:17:03,614 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:17:03,614 INFO L146 ILogger]: Start difference. First operand 173 states and 179 transitions. Second operand 19 states. [2019-05-23 11:17:03,929 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:03,929 INFO L146 ILogger]: Finished difference Result 296 states and 308 transitions. [2019-05-23 11:17:03,930 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:17:03,930 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 167 [2019-05-23 11:17:03,931 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:03,932 INFO L146 ILogger]: With dead ends: 296 [2019-05-23 11:17:03,932 INFO L146 ILogger]: Without dead ends: 185 [2019-05-23 11:17:03,933 INFO L146 ILogger]: 0 DeclaredPredicates, 197 GetRequests, 166 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 11:17:03,934 INFO L146 ILogger]: Start minimizeSevpa. Operand 185 states. [2019-05-23 11:17:03,938 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 185 to 180. [2019-05-23 11:17:03,938 INFO L146 ILogger]: Start removeUnreachable. Operand 180 states. [2019-05-23 11:17:03,939 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 180 states to 180 states and 186 transitions. [2019-05-23 11:17:03,939 INFO L146 ILogger]: Start accepts. Automaton has 180 states and 186 transitions. Word has length 167 [2019-05-23 11:17:03,939 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:03,940 INFO L146 ILogger]: Abstraction has 180 states and 186 transitions. [2019-05-23 11:17:03,940 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:17:03,940 INFO L146 ILogger]: Start isEmpty. Operand 180 states and 186 transitions. [2019-05-23 11:17:03,942 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 175 [2019-05-23 11:17:03,942 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:03,944 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:03,945 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:03,945 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:03,945 INFO L146 ILogger]: Analyzing trace with hash -1204296193, now seen corresponding path program 9 times [2019-05-23 11:17:03,946 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:03,946 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:03,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,947 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:03,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,980 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,699 INFO L146 ILogger]: Checked inductivity of 279 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:17:04,699 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:04,699 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:04,709 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:04,749 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:17:04,749 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,750 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:04,752 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:04,879 INFO L146 ILogger]: Checked inductivity of 279 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2019-05-23 11:17:04,898 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:04,899 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7] total 24 [2019-05-23 11:17:04,899 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:17:04,900 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:17:04,900 INFO L146 ILogger]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:17:04,900 INFO L146 ILogger]: Start difference. First operand 180 states and 186 transitions. Second operand 24 states. [2019-05-23 11:17:06,315 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:06,316 INFO L146 ILogger]: Finished difference Result 315 states and 328 transitions. [2019-05-23 11:17:06,318 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:17:06,318 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 174 [2019-05-23 11:17:06,318 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:06,319 INFO L146 ILogger]: With dead ends: 315 [2019-05-23 11:17:06,319 INFO L146 ILogger]: Without dead ends: 204 [2019-05-23 11:17:06,320 INFO L146 ILogger]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=445, Invalid=1447, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:17:06,321 INFO L146 ILogger]: Start minimizeSevpa. Operand 204 states. [2019-05-23 11:17:06,324 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 204 to 194. [2019-05-23 11:17:06,324 INFO L146 ILogger]: Start removeUnreachable. Operand 194 states. [2019-05-23 11:17:06,325 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 194 states to 194 states and 200 transitions. [2019-05-23 11:17:06,325 INFO L146 ILogger]: Start accepts. Automaton has 194 states and 200 transitions. Word has length 174 [2019-05-23 11:17:06,325 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:06,325 INFO L146 ILogger]: Abstraction has 194 states and 200 transitions. [2019-05-23 11:17:06,325 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:17:06,326 INFO L146 ILogger]: Start isEmpty. Operand 194 states and 200 transitions. [2019-05-23 11:17:06,326 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 189 [2019-05-23 11:17:06,327 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:06,327 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 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, 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] [2019-05-23 11:17:06,327 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:06,327 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:06,328 INFO L146 ILogger]: Analyzing trace with hash 1189268552, now seen corresponding path program 10 times [2019-05-23 11:17:06,328 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:06,328 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:06,329 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:06,329 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:06,329 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:06,350 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:06,574 INFO L146 ILogger]: Checked inductivity of 351 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-05-23 11:17:06,575 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:06,575 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:06,583 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:07,166 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:07,166 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:07,168 INFO L146 ILogger]: Trace formula consists of 313 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:17:07,171 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:07,244 INFO L146 ILogger]: Checked inductivity of 351 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-05-23 11:17:07,267 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:07,267 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:17:07,268 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:17:07,268 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:17:07,269 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:07,269 INFO L146 ILogger]: Start difference. First operand 194 states and 200 transitions. Second operand 23 states. [2019-05-23 11:17:07,638 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:07,638 INFO L146 ILogger]: Finished difference Result 324 states and 336 transitions. [2019-05-23 11:17:07,645 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:17:07,645 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 188 [2019-05-23 11:17:07,645 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:07,646 INFO L146 ILogger]: With dead ends: 324 [2019-05-23 11:17:07,647 INFO L146 ILogger]: Without dead ends: 206 [2019-05-23 11:17:07,648 INFO L146 ILogger]: 0 DeclaredPredicates, 226 GetRequests, 187 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 11:17:07,648 INFO L146 ILogger]: Start minimizeSevpa. Operand 206 states. [2019-05-23 11:17:07,652 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 206 to 201. [2019-05-23 11:17:07,652 INFO L146 ILogger]: Start removeUnreachable. Operand 201 states. [2019-05-23 11:17:07,653 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 201 states to 201 states and 207 transitions. [2019-05-23 11:17:07,653 INFO L146 ILogger]: Start accepts. Automaton has 201 states and 207 transitions. Word has length 188 [2019-05-23 11:17:07,653 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:07,653 INFO L146 ILogger]: Abstraction has 201 states and 207 transitions. [2019-05-23 11:17:07,653 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:17:07,653 INFO L146 ILogger]: Start isEmpty. Operand 201 states and 207 transitions. [2019-05-23 11:17:07,654 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 196 [2019-05-23 11:17:07,655 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:07,655 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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, 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] [2019-05-23 11:17:07,655 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:07,655 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:07,656 INFO L146 ILogger]: Analyzing trace with hash -201834254, now seen corresponding path program 11 times [2019-05-23 11:17:07,656 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:07,656 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:07,657 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:07,657 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:07,657 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:07,679 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:08,057 INFO L146 ILogger]: Checked inductivity of 415 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-05-23 11:17:08,057 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:08,057 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:08,066 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:13,385 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:17:13,385 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:13,393 INFO L146 ILogger]: Trace formula consists of 323 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:13,396 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:13,520 INFO L146 ILogger]: Checked inductivity of 415 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2019-05-23 11:17:13,541 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:13,541 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-05-23 11:17:13,542 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:17:13,542 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:17:13,543 INFO L146 ILogger]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:17:13,543 INFO L146 ILogger]: Start difference. First operand 201 states and 207 transitions. Second operand 30 states. [2019-05-23 11:17:14,264 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:14,265 INFO L146 ILogger]: Finished difference Result 343 states and 356 transitions. [2019-05-23 11:17:14,265 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:17:14,265 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 195 [2019-05-23 11:17:14,266 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:14,267 INFO L146 ILogger]: With dead ends: 343 [2019-05-23 11:17:14,267 INFO L146 ILogger]: Without dead ends: 225 [2019-05-23 11:17:14,269 INFO L146 ILogger]: 0 DeclaredPredicates, 243 GetRequests, 189 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 11:17:14,270 INFO L146 ILogger]: Start minimizeSevpa. Operand 225 states. [2019-05-23 11:17:14,273 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 225 to 215. [2019-05-23 11:17:14,273 INFO L146 ILogger]: Start removeUnreachable. Operand 215 states. [2019-05-23 11:17:14,274 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 215 states to 215 states and 221 transitions. [2019-05-23 11:17:14,274 INFO L146 ILogger]: Start accepts. Automaton has 215 states and 221 transitions. Word has length 195 [2019-05-23 11:17:14,275 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:14,275 INFO L146 ILogger]: Abstraction has 215 states and 221 transitions. [2019-05-23 11:17:14,275 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:17:14,275 INFO L146 ILogger]: Start isEmpty. Operand 215 states and 221 transitions. [2019-05-23 11:17:14,276 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 210 [2019-05-23 11:17:14,276 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:14,276 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:17:14,277 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:14,277 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:14,277 INFO L146 ILogger]: Analyzing trace with hash 1796552400, now seen corresponding path program 12 times [2019-05-23 11:17:14,277 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:14,277 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:14,278 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,278 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:14,278 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,299 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,628 INFO L146 ILogger]: Checked inductivity of 508 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:17:14,629 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:14,629 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:14,640 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:14,701 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:17:14,701 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,704 INFO L146 ILogger]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:14,708 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:14,857 INFO L146 ILogger]: Checked inductivity of 508 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2019-05-23 11:17:14,875 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:14,876 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7] total 30 [2019-05-23 11:17:14,876 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:17:14,876 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:17:14,877 INFO L146 ILogger]: CoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:17:14,877 INFO L146 ILogger]: Start difference. First operand 215 states and 221 transitions. Second operand 30 states. [2019-05-23 11:17:16,883 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:16,883 INFO L146 ILogger]: Finished difference Result 364 states and 377 transitions. [2019-05-23 11:17:16,883 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:17:16,883 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 209 [2019-05-23 11:17:16,884 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:16,885 INFO L146 ILogger]: With dead ends: 364 [2019-05-23 11:17:16,885 INFO L146 ILogger]: Without dead ends: 239 [2019-05-23 11:17:16,886 INFO L146 ILogger]: 0 DeclaredPredicates, 259 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=760, Invalid=2320, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:17:16,887 INFO L146 ILogger]: Start minimizeSevpa. Operand 239 states. [2019-05-23 11:17:16,890 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 239 to 229. [2019-05-23 11:17:16,891 INFO L146 ILogger]: Start removeUnreachable. Operand 229 states. [2019-05-23 11:17:16,891 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 229 states to 229 states and 235 transitions. [2019-05-23 11:17:16,891 INFO L146 ILogger]: Start accepts. Automaton has 229 states and 235 transitions. Word has length 209 [2019-05-23 11:17:16,892 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:16,892 INFO L146 ILogger]: Abstraction has 229 states and 235 transitions. [2019-05-23 11:17:16,892 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:17:16,892 INFO L146 ILogger]: Start isEmpty. Operand 229 states and 235 transitions. [2019-05-23 11:17:16,893 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 224 [2019-05-23 11:17:16,893 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:16,893 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:17:16,893 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:16,893 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:16,894 INFO L146 ILogger]: Analyzing trace with hash 497902034, now seen corresponding path program 13 times [2019-05-23 11:17:16,894 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:16,894 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:16,895 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:16,895 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:16,895 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:16,917 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:17,435 INFO L146 ILogger]: Checked inductivity of 601 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-05-23 11:17:17,436 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:17,436 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:17,444 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:17,501 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:17,502 INFO L146 ILogger]: Trace formula consists of 363 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:17:17,505 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:17,572 INFO L146 ILogger]: Checked inductivity of 601 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-05-23 11:17:17,592 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:17,592 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:17:17,592 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:17:17,592 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:17:17,593 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:17:17,593 INFO L146 ILogger]: Start difference. First operand 229 states and 235 transitions. Second operand 29 states. [2019-05-23 11:17:18,575 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:18,575 INFO L146 ILogger]: Finished difference Result 373 states and 385 transitions. [2019-05-23 11:17:18,576 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:17:18,576 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 223 [2019-05-23 11:17:18,576 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:18,577 INFO L146 ILogger]: With dead ends: 373 [2019-05-23 11:17:18,577 INFO L146 ILogger]: Without dead ends: 241 [2019-05-23 11:17:18,578 INFO L146 ILogger]: 0 DeclaredPredicates, 273 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:17:18,579 INFO L146 ILogger]: Start minimizeSevpa. Operand 241 states. [2019-05-23 11:17:18,582 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 241 to 236. [2019-05-23 11:17:18,583 INFO L146 ILogger]: Start removeUnreachable. Operand 236 states. [2019-05-23 11:17:18,583 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 236 states to 236 states and 242 transitions. [2019-05-23 11:17:18,583 INFO L146 ILogger]: Start accepts. Automaton has 236 states and 242 transitions. Word has length 223 [2019-05-23 11:17:18,584 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:18,584 INFO L146 ILogger]: Abstraction has 236 states and 242 transitions. [2019-05-23 11:17:18,584 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:17:18,584 INFO L146 ILogger]: Start isEmpty. Operand 236 states and 242 transitions. [2019-05-23 11:17:18,585 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 231 [2019-05-23 11:17:18,585 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:18,586 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:17:18,586 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:18,586 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:18,586 INFO L146 ILogger]: Analyzing trace with hash -939598616, now seen corresponding path program 14 times [2019-05-23 11:17:18,586 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:18,586 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:18,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:18,587 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:18,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:18,608 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:18,954 INFO L146 ILogger]: Checked inductivity of 686 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-05-23 11:17:18,954 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:18,954 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:18,964 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:19,041 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:19,041 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:19,043 INFO L146 ILogger]: Trace formula consists of 373 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:17:19,047 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:19,249 INFO L146 ILogger]: Checked inductivity of 686 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-05-23 11:17:19,268 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:19,268 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:17:19,269 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:17:19,269 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:17:19,270 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:19,270 INFO L146 ILogger]: Start difference. First operand 236 states and 242 transitions. Second operand 31 states. [2019-05-23 11:17:19,806 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:19,807 INFO L146 ILogger]: Finished difference Result 380 states and 392 transitions. [2019-05-23 11:17:19,808 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:17:19,808 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 230 [2019-05-23 11:17:19,808 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:19,809 INFO L146 ILogger]: With dead ends: 380 [2019-05-23 11:17:19,810 INFO L146 ILogger]: Without dead ends: 248 [2019-05-23 11:17:19,813 INFO L146 ILogger]: 0 DeclaredPredicates, 284 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:17:19,814 INFO L146 ILogger]: Start minimizeSevpa. Operand 248 states. [2019-05-23 11:17:19,817 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 248 to 243. [2019-05-23 11:17:19,818 INFO L146 ILogger]: Start removeUnreachable. Operand 243 states. [2019-05-23 11:17:19,818 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 243 states to 243 states and 249 transitions. [2019-05-23 11:17:19,819 INFO L146 ILogger]: Start accepts. Automaton has 243 states and 249 transitions. Word has length 230 [2019-05-23 11:17:19,819 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:19,819 INFO L146 ILogger]: Abstraction has 243 states and 249 transitions. [2019-05-23 11:17:19,819 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:17:19,819 INFO L146 ILogger]: Start isEmpty. Operand 243 states and 249 transitions. [2019-05-23 11:17:19,821 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 238 [2019-05-23 11:17:19,821 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:19,821 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:17:19,822 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:19,822 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:19,822 INFO L146 ILogger]: Analyzing trace with hash 779541778, now seen corresponding path program 15 times [2019-05-23 11:17:19,822 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:19,822 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:19,823 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:19,823 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:19,823 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:19,848 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:20,617 INFO L146 ILogger]: Checked inductivity of 778 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-05-23 11:17:20,618 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:20,618 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:20,626 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:20,674 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:17:20,674 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:20,675 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:20,678 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:21,701 INFO L146 ILogger]: Checked inductivity of 778 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2019-05-23 11:17:21,721 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:21,722 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7] total 36 [2019-05-23 11:17:21,722 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:17:21,722 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:17:21,723 INFO L146 ILogger]: CoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:17:21,723 INFO L146 ILogger]: Start difference. First operand 243 states and 249 transitions. Second operand 36 states. [2019-05-23 11:17:22,736 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:22,736 INFO L146 ILogger]: Finished difference Result 399 states and 412 transitions. [2019-05-23 11:17:22,737 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:17:22,737 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 237 [2019-05-23 11:17:22,737 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:22,738 INFO L146 ILogger]: With dead ends: 399 [2019-05-23 11:17:22,738 INFO L146 ILogger]: Without dead ends: 267 [2019-05-23 11:17:22,740 INFO L146 ILogger]: 0 DeclaredPredicates, 299 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1165, Invalid=3391, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:17:22,740 INFO L146 ILogger]: Start minimizeSevpa. Operand 267 states. [2019-05-23 11:17:22,745 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 267 to 257. [2019-05-23 11:17:22,745 INFO L146 ILogger]: Start removeUnreachable. Operand 257 states. [2019-05-23 11:17:22,746 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 257 states to 257 states and 263 transitions. [2019-05-23 11:17:22,746 INFO L146 ILogger]: Start accepts. Automaton has 257 states and 263 transitions. Word has length 237 [2019-05-23 11:17:22,746 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:22,746 INFO L146 ILogger]: Abstraction has 257 states and 263 transitions. [2019-05-23 11:17:22,747 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:17:22,747 INFO L146 ILogger]: Start isEmpty. Operand 257 states and 263 transitions. [2019-05-23 11:17:22,748 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 252 [2019-05-23 11:17:22,748 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:22,748 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:22,749 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:22,749 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:22,749 INFO L146 ILogger]: Analyzing trace with hash 1932664400, now seen corresponding path program 16 times [2019-05-23 11:17:22,749 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:22,749 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:22,750 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:22,750 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:22,750 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:22,771 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:24,210 INFO L146 ILogger]: Checked inductivity of 892 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2019-05-23 11:17:24,211 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:24,211 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:24,220 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:26,883 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:26,883 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:26,887 INFO L146 ILogger]: Trace formula consists of 403 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:17:26,890 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:27,017 INFO L146 ILogger]: Checked inductivity of 892 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2019-05-23 11:17:27,038 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:27,038 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:17:27,039 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:17:27,039 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:17:27,039 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:27,040 INFO L146 ILogger]: Start difference. First operand 257 states and 263 transitions. Second operand 35 states. [2019-05-23 11:17:27,821 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:27,821 INFO L146 ILogger]: Finished difference Result 408 states and 420 transitions. [2019-05-23 11:17:27,826 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:17:27,826 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 251 [2019-05-23 11:17:27,826 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:27,828 INFO L146 ILogger]: With dead ends: 408 [2019-05-23 11:17:27,828 INFO L146 ILogger]: Without dead ends: 269 [2019-05-23 11:17:27,830 INFO L146 ILogger]: 0 DeclaredPredicates, 313 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:17:27,830 INFO L146 ILogger]: Start minimizeSevpa. Operand 269 states. [2019-05-23 11:17:27,834 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 269 to 264. [2019-05-23 11:17:27,834 INFO L146 ILogger]: Start removeUnreachable. Operand 264 states. [2019-05-23 11:17:27,835 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 264 states to 264 states and 270 transitions. [2019-05-23 11:17:27,835 INFO L146 ILogger]: Start accepts. Automaton has 264 states and 270 transitions. Word has length 251 [2019-05-23 11:17:27,836 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:27,836 INFO L146 ILogger]: Abstraction has 264 states and 270 transitions. [2019-05-23 11:17:27,836 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:17:27,836 INFO L146 ILogger]: Start isEmpty. Operand 264 states and 270 transitions. [2019-05-23 11:17:27,837 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 259 [2019-05-23 11:17:27,837 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:27,838 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:27,838 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:27,838 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:27,838 INFO L146 ILogger]: Analyzing trace with hash 1504361574, now seen corresponding path program 17 times [2019-05-23 11:17:27,838 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:27,838 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:27,839 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:27,839 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:27,839 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:27,867 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:28,354 INFO L146 ILogger]: Checked inductivity of 998 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2019-05-23 11:17:28,354 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:28,355 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:28,363 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:53,320 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2019-05-23 11:17:53,320 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:53,338 INFO L146 ILogger]: Trace formula consists of 413 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:53,340 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:53,593 INFO L146 ILogger]: Checked inductivity of 998 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2019-05-23 11:17:53,617 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:53,617 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 9] total 42 [2019-05-23 11:17:53,618 INFO L146 ILogger]: Interpolant automaton has 42 states [2019-05-23 11:17:53,618 INFO L146 ILogger]: Constructing interpolant automaton starting with 42 interpolants. [2019-05-23 11:17:53,619 INFO L146 ILogger]: CoverageRelationStatistics Valid=346, Invalid=1376, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:17:53,619 INFO L146 ILogger]: Start difference. First operand 264 states and 270 transitions. Second operand 42 states. [2019-05-23 11:17:55,906 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:55,907 INFO L146 ILogger]: Finished difference Result 427 states and 440 transitions. [2019-05-23 11:17:55,907 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-05-23 11:17:55,907 INFO L146 ILogger]: Start accepts. Automaton has 42 states. Word has length 258 [2019-05-23 11:17:55,908 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:55,909 INFO L146 ILogger]: With dead ends: 427 [2019-05-23 11:17:55,909 INFO L146 ILogger]: Without dead ends: 288 [2019-05-23 11:17:55,911 INFO L146 ILogger]: 0 DeclaredPredicates, 330 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1520, Invalid=4800, Unknown=0, NotChecked=0, Total=6320 [2019-05-23 11:17:55,911 INFO L146 ILogger]: Start minimizeSevpa. Operand 288 states. [2019-05-23 11:17:55,915 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 288 to 278. [2019-05-23 11:17:55,915 INFO L146 ILogger]: Start removeUnreachable. Operand 278 states. [2019-05-23 11:17:55,916 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 278 states to 278 states and 284 transitions. [2019-05-23 11:17:55,916 INFO L146 ILogger]: Start accepts. Automaton has 278 states and 284 transitions. Word has length 258 [2019-05-23 11:17:55,916 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:55,916 INFO L146 ILogger]: Abstraction has 278 states and 284 transitions. [2019-05-23 11:17:55,916 INFO L146 ILogger]: Interpolant automaton has 42 states. [2019-05-23 11:17:55,917 INFO L146 ILogger]: Start isEmpty. Operand 278 states and 284 transitions. [2019-05-23 11:17:55,918 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 273 [2019-05-23 11:17:55,918 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:55,918 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:55,919 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:55,919 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:55,919 INFO L146 ILogger]: Analyzing trace with hash -1195583569, now seen corresponding path program 18 times [2019-05-23 11:17:55,919 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:55,919 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:55,920 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:55,920 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:55,920 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:55,945 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:56,495 INFO L146 ILogger]: Checked inductivity of 1133 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2019-05-23 11:17:56,496 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:56,496 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:56,511 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:57,011 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:17:57,011 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:57,014 INFO L146 ILogger]: Trace formula consists of 303 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:17:57,017 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:57,516 INFO L146 ILogger]: Checked inductivity of 1133 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2019-05-23 11:17:57,537 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:57,537 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 47 [2019-05-23 11:17:57,538 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:17:57,538 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:17:57,539 INFO L146 ILogger]: CoverageRelationStatistics Valid=443, Invalid=1719, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:17:57,539 INFO L146 ILogger]: Start difference. First operand 278 states and 284 transitions. Second operand 47 states. [2019-05-23 11:17:59,047 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-05-23 11:17:59,759 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:59,759 INFO L146 ILogger]: Finished difference Result 448 states and 461 transitions. [2019-05-23 11:17:59,760 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-05-23 11:17:59,760 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 272 [2019-05-23 11:17:59,760 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:59,761 INFO L146 ILogger]: With dead ends: 448 [2019-05-23 11:17:59,762 INFO L146 ILogger]: Without dead ends: 302 [2019-05-23 11:17:59,764 INFO L146 ILogger]: 0 DeclaredPredicates, 355 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2026, Invalid=6716, Unknown=0, NotChecked=0, Total=8742 [2019-05-23 11:17:59,765 INFO L146 ILogger]: Start minimizeSevpa. Operand 302 states. [2019-05-23 11:17:59,769 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 302 to 292. [2019-05-23 11:17:59,769 INFO L146 ILogger]: Start removeUnreachable. Operand 292 states. [2019-05-23 11:17:59,770 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 292 states to 292 states and 298 transitions. [2019-05-23 11:17:59,770 INFO L146 ILogger]: Start accepts. Automaton has 292 states and 298 transitions. Word has length 272 [2019-05-23 11:17:59,770 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:59,770 INFO L146 ILogger]: Abstraction has 292 states and 298 transitions. [2019-05-23 11:17:59,770 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:17:59,770 INFO L146 ILogger]: Start isEmpty. Operand 292 states and 298 transitions. [2019-05-23 11:17:59,772 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 287 [2019-05-23 11:17:59,772 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:59,772 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 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, 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] [2019-05-23 11:17:59,772 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:59,772 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:59,773 INFO L146 ILogger]: Analyzing trace with hash -1876356627, now seen corresponding path program 19 times [2019-05-23 11:17:59,773 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:59,773 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:59,773 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:59,774 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:59,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:59,795 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:00,370 INFO L146 ILogger]: Checked inductivity of 1275 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2019-05-23 11:18:00,371 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:00,371 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 11:18:00,381 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY