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-multidimensional/init-2-n-u_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:31:00,325 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:31:00,328 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:31:00,345 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:31:00,345 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:31:00,347 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:31:00,349 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:31:00,351 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:31:00,354 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:31:00,362 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:31:00,363 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:31:00,363 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:31:00,365 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:31:00,367 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:31:00,370 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:31:00,371 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:31:00,371 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:31:00,376 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:31:00,380 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:31:00,381 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:31:00,382 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:31:00,384 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:31:00,388 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:31:00,388 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:31:00,389 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:31:00,390 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:31:00,390 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:31:00,392 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:31:00,392 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:31:00,393 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:31:00,394 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:31:00,394 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:31:00,395 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:31:00,396 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:31:00,398 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:31:00,398 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:31:00,398 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:31:00,400 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:31:00,401 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:31:00,401 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:31:00,428 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:31:00,429 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:31:00,431 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:31:00,431 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:31:00,432 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:31:00,432 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:31:00,432 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:31:00,432 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:31:00,433 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:31:00,433 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:31:00,433 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:31:00,433 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:31:00,433 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:31:00,435 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:31:00,435 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:31:00,435 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:31:00,436 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:31:00,436 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:31:00,436 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:31:00,436 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:31:00,436 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:31:00,437 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:31:00,437 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:31:00,437 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:31:00,438 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:31:00,438 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:31:00,438 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:31:00,438 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:31:00,439 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 11:31:00,499 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:31:00,513 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:31:00,517 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:31:00,519 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:31:00,519 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:31:00,520 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-multidimensional/init-2-n-u_true-unreach-call.i [2019-05-23 11:31:00,580 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba9d84f2/603f6c12a381477cb22ff4d3d362036d/FLAG4f4a04448 [2019-05-23 11:31:00,993 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:31:00,994 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-multidimensional/init-2-n-u_true-unreach-call.i [2019-05-23 11:31:01,000 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba9d84f2/603f6c12a381477cb22ff4d3d362036d/FLAG4f4a04448 [2019-05-23 11:31:01,357 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba9d84f2/603f6c12a381477cb22ff4d3d362036d [2019-05-23 11:31:01,369 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:31:01,371 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:31:01,372 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:31:01,372 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:31:01,376 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:31:01,377 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,381 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adb3c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01, skipping insertion in model container [2019-05-23 11:31:01,381 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,389 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:31:01,412 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:31:01,653 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:31:01,659 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:31:01,691 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:31:01,715 INFO L146 ILogger]: Completed translation [2019-05-23 11:31:01,716 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01 WrapperNode [2019-05-23 11:31:01,716 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:31:01,718 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:31:01,718 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:31:01,718 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:31:01,727 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,736 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,762 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:31:01,762 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:31:01,762 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:31:01,762 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:31:01,772 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,773 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,775 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,775 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,876 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,887 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,889 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (1/1) ... [2019-05-23 11:31:01,893 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:31:01,896 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:31:01,896 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:31:01,896 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:31:01,897 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (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 11:31:01,959 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:31:01,959 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:31:01,960 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:31:01,960 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:31:01,960 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:31:01,960 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:31:02,379 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:31:02,380 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:31:02,381 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:31:02 BoogieIcfgContainer [2019-05-23 11:31:02,381 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:31:02,382 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:31:02,382 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:31:02,385 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:31:02,385 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:31:01" (1/3) ... [2019-05-23 11:31:02,386 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e89c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:31:02, skipping insertion in model container [2019-05-23 11:31:02,387 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:01" (2/3) ... [2019-05-23 11:31:02,387 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e89c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:31:02, skipping insertion in model container [2019-05-23 11:31:02,387 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:31:02" (3/3) ... [2019-05-23 11:31:02,389 INFO L146 ILogger]: Analyzing ICFG init-2-n-u_true-unreach-call.i [2019-05-23 11:31:02,398 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:31:02,405 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:31:02,422 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:31:02,451 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:31:02,452 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:31:02,452 INFO L146 ILogger]: Hoare is true [2019-05-23 11:31:02,452 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:31:02,452 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:31:02,452 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:31:02,453 INFO L146 ILogger]: Difference is false [2019-05-23 11:31:02,453 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:31:02,453 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:31:02,468 INFO L146 ILogger]: Start isEmpty. Operand 41 states. [2019-05-23 11:31:02,475 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:31:02,475 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:02,476 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] [2019-05-23 11:31:02,478 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:02,483 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:02,483 INFO L146 ILogger]: Analyzing trace with hash -1244287212, now seen corresponding path program 1 times [2019-05-23 11:31:02,485 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:02,486 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:02,523 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:02,523 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:02,523 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:02,552 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:02,552 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:02,553 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:02,565 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:02,596 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:02,599 INFO L146 ILogger]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:31:02,604 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:02,668 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 11:31:02,690 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:31:02,690 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:31:02,693 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:31:02,703 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:31:02,704 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:02,706 INFO L146 ILogger]: Start difference. First operand 41 states. Second operand 4 states. [2019-05-23 11:31:02,885 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:02,885 INFO L146 ILogger]: Finished difference Result 87 states and 112 transitions. [2019-05-23 11:31:02,887 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:31:02,888 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 26 [2019-05-23 11:31:02,889 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:02,903 INFO L146 ILogger]: With dead ends: 87 [2019-05-23 11:31:02,903 INFO L146 ILogger]: Without dead ends: 54 [2019-05-23 11:31:02,906 INFO L146 ILogger]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:02,925 INFO L146 ILogger]: Start minimizeSevpa. Operand 54 states. [2019-05-23 11:31:02,941 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 54 to 36. [2019-05-23 11:31:02,943 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:31:02,944 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-05-23 11:31:02,945 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 26 [2019-05-23 11:31:02,946 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:02,946 INFO L146 ILogger]: Abstraction has 36 states and 39 transitions. [2019-05-23 11:31:02,946 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:31:02,946 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 39 transitions. [2019-05-23 11:31:02,947 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:31:02,947 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:02,948 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] [2019-05-23 11:31:02,948 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:02,949 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:02,949 INFO L146 ILogger]: Analyzing trace with hash -1785776099, now seen corresponding path program 1 times [2019-05-23 11:31:02,949 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:02,949 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:02,950 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:02,950 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:02,950 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:02,955 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:02,956 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:02,956 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:02,972 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:03,001 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:03,002 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:31:03,006 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:03,184 INFO L146 ILogger]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:03,203 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:31:03,203 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:31:03,205 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:31:03,206 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:31:03,206 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:03,206 INFO L146 ILogger]: Start difference. First operand 36 states and 39 transitions. Second operand 4 states. [2019-05-23 11:31:03,338 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:03,339 INFO L146 ILogger]: Finished difference Result 73 states and 81 transitions. [2019-05-23 11:31:03,340 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:31:03,340 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 30 [2019-05-23 11:31:03,340 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:03,341 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:31:03,341 INFO L146 ILogger]: Without dead ends: 52 [2019-05-23 11:31:03,342 INFO L146 ILogger]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:03,343 INFO L146 ILogger]: Start minimizeSevpa. Operand 52 states. [2019-05-23 11:31:03,349 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 52 to 38. [2019-05-23 11:31:03,349 INFO L146 ILogger]: Start removeUnreachable. Operand 38 states. [2019-05-23 11:31:03,350 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-05-23 11:31:03,351 INFO L146 ILogger]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 30 [2019-05-23 11:31:03,351 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:03,351 INFO L146 ILogger]: Abstraction has 38 states and 41 transitions. [2019-05-23 11:31:03,351 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:31:03,352 INFO L146 ILogger]: Start isEmpty. Operand 38 states and 41 transitions. [2019-05-23 11:31:03,353 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 34 [2019-05-23 11:31:03,353 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:03,353 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] [2019-05-23 11:31:03,353 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:03,354 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:03,354 INFO L146 ILogger]: Analyzing trace with hash 1390788557, now seen corresponding path program 1 times [2019-05-23 11:31:03,354 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:03,354 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:03,355 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:03,356 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:03,356 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:03,360 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:03,361 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:03,361 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:03,378 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:03,406 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:03,407 INFO L146 ILogger]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:31:03,408 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:03,472 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:03,494 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:03,494 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:31:03,495 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:31:03,495 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:31:03,496 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:03,496 INFO L146 ILogger]: Start difference. First operand 38 states and 41 transitions. Second operand 5 states. [2019-05-23 11:31:03,717 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:03,717 INFO L146 ILogger]: Finished difference Result 88 states and 96 transitions. [2019-05-23 11:31:03,718 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:31:03,719 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 33 [2019-05-23 11:31:03,719 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:03,720 INFO L146 ILogger]: With dead ends: 88 [2019-05-23 11:31:03,720 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:31:03,721 INFO L146 ILogger]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:03,721 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:31:03,728 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 49. [2019-05-23 11:31:03,728 INFO L146 ILogger]: Start removeUnreachable. Operand 49 states. [2019-05-23 11:31:03,729 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2019-05-23 11:31:03,730 INFO L146 ILogger]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 33 [2019-05-23 11:31:03,730 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:03,730 INFO L146 ILogger]: Abstraction has 49 states and 53 transitions. [2019-05-23 11:31:03,730 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:31:03,730 INFO L146 ILogger]: Start isEmpty. Operand 49 states and 53 transitions. [2019-05-23 11:31:03,731 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:31:03,731 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:03,732 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:31:03,732 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:03,732 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:03,733 INFO L146 ILogger]: Analyzing trace with hash -880944611, now seen corresponding path program 2 times [2019-05-23 11:31:03,733 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:03,733 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:03,734 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:03,734 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:03,734 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:03,739 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:03,739 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:03,739 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:03,756 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:31:03,777 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:31:03,777 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:03,778 INFO L146 ILogger]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:31:03,781 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:03,861 INFO L146 ILogger]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:03,886 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:03,887 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:31:03,887 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:31:03,887 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:31:03,888 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:31:03,888 INFO L146 ILogger]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2019-05-23 11:31:04,144 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:04,144 INFO L146 ILogger]: Finished difference Result 112 states and 121 transitions. [2019-05-23 11:31:04,145 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:31:04,145 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 36 [2019-05-23 11:31:04,146 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:04,147 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:31:04,147 INFO L146 ILogger]: Without dead ends: 78 [2019-05-23 11:31:04,147 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:31:04,149 INFO L146 ILogger]: Start minimizeSevpa. Operand 78 states. [2019-05-23 11:31:04,158 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 78 to 60. [2019-05-23 11:31:04,159 INFO L146 ILogger]: Start removeUnreachable. Operand 60 states. [2019-05-23 11:31:04,161 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2019-05-23 11:31:04,161 INFO L146 ILogger]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 36 [2019-05-23 11:31:04,161 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:04,161 INFO L146 ILogger]: Abstraction has 60 states and 65 transitions. [2019-05-23 11:31:04,161 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:31:04,162 INFO L146 ILogger]: Start isEmpty. Operand 60 states and 65 transitions. [2019-05-23 11:31:04,162 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:31:04,163 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:04,163 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:31:04,163 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:04,163 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:04,164 INFO L146 ILogger]: Analyzing trace with hash 2010897869, now seen corresponding path program 3 times [2019-05-23 11:31:04,164 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:04,164 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:04,165 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:04,165 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:04,165 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:04,169 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:04,169 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:04,169 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:04,182 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:31:04,195 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:31:04,195 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:04,196 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:31:04,199 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:04,291 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:31:04,310 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:04,310 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:31:04,311 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:31:04,311 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:31:04,312 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:04,312 INFO L146 ILogger]: Start difference. First operand 60 states and 65 transitions. Second operand 5 states. [2019-05-23 11:31:04,509 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:04,509 INFO L146 ILogger]: Finished difference Result 177 states and 194 transitions. [2019-05-23 11:31:04,510 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:31:04,510 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 39 [2019-05-23 11:31:04,510 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:04,513 INFO L146 ILogger]: With dead ends: 177 [2019-05-23 11:31:04,513 INFO L146 ILogger]: Without dead ends: 145 [2019-05-23 11:31:04,514 INFO L146 ILogger]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:04,516 INFO L146 ILogger]: Start minimizeSevpa. Operand 145 states. [2019-05-23 11:31:04,533 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 145 to 73. [2019-05-23 11:31:04,533 INFO L146 ILogger]: Start removeUnreachable. Operand 73 states. [2019-05-23 11:31:04,534 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2019-05-23 11:31:04,534 INFO L146 ILogger]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 39 [2019-05-23 11:31:04,535 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:04,535 INFO L146 ILogger]: Abstraction has 73 states and 79 transitions. [2019-05-23 11:31:04,535 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:31:04,535 INFO L146 ILogger]: Start isEmpty. Operand 73 states and 79 transitions. [2019-05-23 11:31:04,539 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 53 [2019-05-23 11:31:04,540 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:04,540 INFO L146 ILogger]: trace histogram [6, 6, 6, 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] [2019-05-23 11:31:04,540 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:04,540 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:04,541 INFO L146 ILogger]: Analyzing trace with hash -1021893708, now seen corresponding path program 4 times [2019-05-23 11:31:04,543 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:04,544 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:04,544 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:04,545 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:04,545 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:04,551 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:04,551 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:04,551 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:04,571 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:31:04,599 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:31:04,599 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:04,600 INFO L146 ILogger]: Trace formula consists of 81 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:31:04,606 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:04,771 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2019-05-23 11:31:04,772 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:31:04,801 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:31:04,802 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:31:04,802 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2019-05-23 11:31:04,931 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:31:04,932 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 96 [2019-05-23 11:31:04,933 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:31:04,972 INFO L146 ILogger]: treesize reduction 60, result has 41.2 percent of original size [2019-05-23 11:31:04,973 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:31:04,973 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:42 [2019-05-23 11:31:05,205 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:31:05,207 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:31:05,209 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:31:05,210 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:31:05,211 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2019-05-23 11:31:05,211 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:31:05,230 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:31:05,231 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-05-23 11:31:05,232 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:41 [2019-05-23 11:31:29,320 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:31:29,321 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:31:29,322 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:31:29,409 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:31:29,410 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 188 [2019-05-23 11:31:29,412 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:31:29,519 WARN L146 ILogger]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2019-05-23 11:31:29,520 INFO L146 ILogger]: treesize reduction 132, result has 30.5 percent of original size [2019-05-23 11:31:29,522 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:31:29,522 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:62, output treesize:58 [2019-05-23 11:31:44,207 WARN L146 ILogger]: Spent 12.85 s on a formula simplification that was a NOOP. DAG size: 38 [2019-05-23 11:31:44,281 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:31:44,282 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:31:44,283 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:31:44,392 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-05-23 11:31:44,392 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:31:44,393 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 336 [2019-05-23 11:31:44,396 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:31:44,510 WARN L146 ILogger]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2019-05-23 11:31:44,511 INFO L146 ILogger]: treesize reduction 198, result has 27.5 percent of original size [2019-05-23 11:31:44,513 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-05-23 11:31:44,514 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:79, output treesize:75 [2019-05-23 11:32:00,356 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:32:00,358 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:32:00,358 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:32:00,452 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:32:00,453 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 336 [2019-05-23 11:32:00,456 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:00,540 INFO L146 ILogger]: treesize reduction 198, result has 27.5 percent of original size [2019-05-23 11:32:00,543 INFO L146 ILogger]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-05-23 11:32:00,543 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 6 variables, input treesize:79, output treesize:75