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/min-2-u_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:32:01,259 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:32:01,261 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:32:01,273 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:32:01,273 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:32:01,274 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:32:01,276 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:32:01,278 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:32:01,280 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:32:01,281 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:32:01,282 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:32:01,282 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:32:01,283 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:32:01,284 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:32:01,286 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:32:01,286 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:32:01,287 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:32:01,290 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:32:01,292 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:32:01,294 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:32:01,295 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:32:01,296 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:32:01,299 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:32:01,300 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:32:01,300 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:32:01,301 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:32:01,302 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:32:01,303 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:32:01,303 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:32:01,304 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:32:01,305 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:32:01,306 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:32:01,307 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:32:01,307 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:32:01,308 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:32:01,308 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:32:01,309 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:32:01,310 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:32:01,310 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:32:01,311 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:32:01,326 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:32:01,326 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:32:01,328 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:32:01,328 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:32:01,328 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:32:01,328 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:32:01,329 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:32:01,329 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:32:01,329 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:32:01,329 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:32:01,329 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:32:01,330 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:32:01,330 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:32:01,330 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:32:01,330 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:32:01,330 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:32:01,330 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:32:01,331 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:32:01,331 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:32:01,331 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:32:01,331 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:32:01,332 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:32:01,332 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:32:01,332 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:32:01,332 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:32:01,332 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:32:01,333 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:32:01,333 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:32:01,333 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 11:32:01,365 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:32:01,378 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:32:01,381 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:32:01,383 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:32:01,383 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:32:01,384 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-multidimensional/min-2-u_true-unreach-call.i [2019-05-23 11:32:01,440 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f361771/9675cb05d226415fbbf586c91f293ce2/FLAG525079b3c [2019-05-23 11:32:01,870 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:32:01,871 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-multidimensional/min-2-u_true-unreach-call.i [2019-05-23 11:32:01,877 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f361771/9675cb05d226415fbbf586c91f293ce2/FLAG525079b3c [2019-05-23 11:32:02,250 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f361771/9675cb05d226415fbbf586c91f293ce2 [2019-05-23 11:32:02,261 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:32:02,263 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:32:02,264 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:32:02,264 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:32:02,268 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:32:02,270 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,277 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3233818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02, skipping insertion in model container [2019-05-23 11:32:02,278 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,286 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:32:02,305 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:32:02,490 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:32:02,495 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:32:02,523 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:32:02,545 INFO L146 ILogger]: Completed translation [2019-05-23 11:32:02,546 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02 WrapperNode [2019-05-23 11:32:02,546 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:32:02,548 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:32:02,548 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:32:02,548 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:32:02,559 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,570 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,597 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:32:02,597 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:32:02,597 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:32:02,597 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:32:02,610 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,610 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,612 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,613 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,619 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,626 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,628 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (1/1) ... [2019-05-23 11:32:02,630 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:32:02,631 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:32:02,631 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:32:02,631 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:32:02,632 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (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 11:32:02,828 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:32:02,828 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:32:02,828 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:32:02,828 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:32:02,829 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:32:02,829 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:32:03,341 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:32:03,342 INFO L146 ILogger]: Removed 12 assume(true) statements. [2019-05-23 11:32:03,343 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:32:03 BoogieIcfgContainer [2019-05-23 11:32:03,343 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:32:03,344 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:32:03,344 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:32:03,347 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:32:03,348 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:32:02" (1/3) ... [2019-05-23 11:32:03,349 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c489234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:32:03, skipping insertion in model container [2019-05-23 11:32:03,349 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:02" (2/3) ... [2019-05-23 11:32:03,349 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c489234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:32:03, skipping insertion in model container [2019-05-23 11:32:03,350 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:32:03" (3/3) ... [2019-05-23 11:32:03,351 INFO L146 ILogger]: Analyzing ICFG min-2-u_true-unreach-call.i [2019-05-23 11:32:03,360 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:32:03,368 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:32:03,384 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:32:03,415 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:32:03,415 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:32:03,416 INFO L146 ILogger]: Hoare is true [2019-05-23 11:32:03,416 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:32:03,417 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:32:03,417 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:32:03,417 INFO L146 ILogger]: Difference is false [2019-05-23 11:32:03,418 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:32:03,418 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:32:03,433 INFO L146 ILogger]: Start isEmpty. Operand 58 states. [2019-05-23 11:32:03,440 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:32:03,441 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:03,442 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 11:32:03,444 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:03,449 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:03,449 INFO L146 ILogger]: Analyzing trace with hash 540870233, now seen corresponding path program 1 times [2019-05-23 11:32:03,451 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:03,451 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:03,487 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:03,487 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:03,487 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:03,518 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:03,518 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:03,518 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 11:32:03,530 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:03,557 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:03,560 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2019-05-23 11:32:03,565 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:03,587 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 11:32:03,616 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:32:03,616 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:32:03,619 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:32:03,631 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:32:03,632 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:32:03,634 INFO L146 ILogger]: Start difference. First operand 58 states. Second operand 2 states. [2019-05-23 11:32:03,652 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:03,653 INFO L146 ILogger]: Finished difference Result 104 states and 130 transitions. [2019-05-23 11:32:03,653 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:32:03,654 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 30 [2019-05-23 11:32:03,655 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:03,665 INFO L146 ILogger]: With dead ends: 104 [2019-05-23 11:32:03,666 INFO L146 ILogger]: Without dead ends: 52 [2019-05-23 11:32:03,669 INFO L146 ILogger]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:32:03,687 INFO L146 ILogger]: Start minimizeSevpa. Operand 52 states. [2019-05-23 11:32:03,704 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-05-23 11:32:03,706 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:32:03,708 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2019-05-23 11:32:03,709 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 30 [2019-05-23 11:32:03,710 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:03,710 INFO L146 ILogger]: Abstraction has 52 states and 58 transitions. [2019-05-23 11:32:03,710 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:32:03,710 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 58 transitions. [2019-05-23 11:32:03,711 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:32:03,712 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:03,712 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 11:32:03,712 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:03,713 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:03,713 INFO L146 ILogger]: Analyzing trace with hash 834273240, now seen corresponding path program 1 times [2019-05-23 11:32:03,713 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:03,713 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:03,714 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:03,714 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:03,715 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:03,720 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:03,720 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:03,720 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 11:32:03,735 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:03,754 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:03,755 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:32:03,757 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:03,843 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 11:32:03,874 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:32:03,874 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:32:03,876 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:32:03,877 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:32:03,878 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:32:03,879 INFO L146 ILogger]: Start difference. First operand 52 states and 58 transitions. Second operand 4 states. [2019-05-23 11:32:04,211 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:04,212 INFO L146 ILogger]: Finished difference Result 118 states and 134 transitions. [2019-05-23 11:32:04,212 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:32:04,213 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 30 [2019-05-23 11:32:04,213 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:04,214 INFO L146 ILogger]: With dead ends: 118 [2019-05-23 11:32:04,215 INFO L146 ILogger]: Without dead ends: 86 [2019-05-23 11:32:04,216 INFO L146 ILogger]: 0 DeclaredPredicates, 29 GetRequests, 27 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 11:32:04,216 INFO L146 ILogger]: Start minimizeSevpa. Operand 86 states. [2019-05-23 11:32:04,224 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 86 to 53. [2019-05-23 11:32:04,225 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:32:04,226 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-05-23 11:32:04,226 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 30 [2019-05-23 11:32:04,226 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:04,227 INFO L146 ILogger]: Abstraction has 53 states and 59 transitions. [2019-05-23 11:32:04,227 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:32:04,227 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 59 transitions. [2019-05-23 11:32:04,228 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:32:04,228 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:04,229 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 11:32:04,229 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:04,229 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:04,229 INFO L146 ILogger]: Analyzing trace with hash 2028571043, now seen corresponding path program 1 times [2019-05-23 11:32:04,230 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:04,230 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:04,231 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:04,231 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:04,231 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:04,236 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:04,237 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:04,237 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 11:32:04,252 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:04,278 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:04,279 INFO L146 ILogger]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:32:04,281 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:04,313 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 11:32:04,338 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:32:04,338 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:32:04,339 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:32:04,339 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:32:04,339 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:32:04,340 INFO L146 ILogger]: Start difference. First operand 53 states and 59 transitions. Second operand 4 states. [2019-05-23 11:32:04,598 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:04,598 INFO L146 ILogger]: Finished difference Result 124 states and 141 transitions. [2019-05-23 11:32:04,599 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:32:04,599 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 34 [2019-05-23 11:32:04,600 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:04,603 INFO L146 ILogger]: With dead ends: 124 [2019-05-23 11:32:04,604 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:32:04,605 INFO L146 ILogger]: 0 DeclaredPredicates, 33 GetRequests, 31 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 11:32:04,605 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:32:04,623 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 56. [2019-05-23 11:32:04,624 INFO L146 ILogger]: Start removeUnreachable. Operand 56 states. [2019-05-23 11:32:04,625 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2019-05-23 11:32:04,625 INFO L146 ILogger]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 34 [2019-05-23 11:32:04,625 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:04,626 INFO L146 ILogger]: Abstraction has 56 states and 62 transitions. [2019-05-23 11:32:04,628 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:32:04,628 INFO L146 ILogger]: Start isEmpty. Operand 56 states and 62 transitions. [2019-05-23 11:32:04,629 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:32:04,629 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:04,630 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] [2019-05-23 11:32:04,630 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:04,630 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:04,630 INFO L146 ILogger]: Analyzing trace with hash -438423372, now seen corresponding path program 1 times [2019-05-23 11:32:04,631 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:04,631 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:04,633 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:04,634 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:04,634 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:04,641 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:04,641 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:04,641 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 11:32:04,651 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:04,669 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:04,670 INFO L146 ILogger]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:32:04,672 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:04,751 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 11:32:04,777 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:04,777 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:32:04,777 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:32:04,778 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:32:04,778 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:32:04,778 INFO L146 ILogger]: Start difference. First operand 56 states and 62 transitions. Second operand 5 states. [2019-05-23 11:32:05,123 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:05,123 INFO L146 ILogger]: Finished difference Result 151 states and 169 transitions. [2019-05-23 11:32:05,124 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:32:05,124 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 39 [2019-05-23 11:32:05,124 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:05,125 INFO L146 ILogger]: With dead ends: 151 [2019-05-23 11:32:05,125 INFO L146 ILogger]: Without dead ends: 108 [2019-05-23 11:32:05,126 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 11:32:05,127 INFO L146 ILogger]: Start minimizeSevpa. Operand 108 states. [2019-05-23 11:32:05,142 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 108 to 78. [2019-05-23 11:32:05,142 INFO L146 ILogger]: Start removeUnreachable. Operand 78 states. [2019-05-23 11:32:05,145 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2019-05-23 11:32:05,146 INFO L146 ILogger]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 39 [2019-05-23 11:32:05,146 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:05,146 INFO L146 ILogger]: Abstraction has 78 states and 86 transitions. [2019-05-23 11:32:05,146 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:32:05,146 INFO L146 ILogger]: Start isEmpty. Operand 78 states and 86 transitions. [2019-05-23 11:32:05,150 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 45 [2019-05-23 11:32:05,151 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:05,151 INFO L146 ILogger]: trace histogram [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 11:32:05,151 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:05,152 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:05,152 INFO L146 ILogger]: Analyzing trace with hash -2017702845, now seen corresponding path program 2 times [2019-05-23 11:32:05,152 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:05,152 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:05,156 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:05,157 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:05,157 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:05,163 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:05,163 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:05,164 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 11:32:05,183 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:32:05,200 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-05-23 11:32:05,200 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:05,201 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:32:05,203 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:05,343 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:32:05,365 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:32:05,365 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:32:05,365 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:32:05,366 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:32:05,366 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:32:05,366 INFO L146 ILogger]: Start difference. First operand 78 states and 86 transitions. Second operand 4 states. [2019-05-23 11:32:05,503 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:05,504 INFO L146 ILogger]: Finished difference Result 159 states and 176 transitions. [2019-05-23 11:32:05,504 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:32:05,504 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 44 [2019-05-23 11:32:05,504 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:05,506 INFO L146 ILogger]: With dead ends: 159 [2019-05-23 11:32:05,506 INFO L146 ILogger]: Without dead ends: 135 [2019-05-23 11:32:05,507 INFO L146 ILogger]: 0 DeclaredPredicates, 43 GetRequests, 41 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 11:32:05,507 INFO L146 ILogger]: Start minimizeSevpa. Operand 135 states. [2019-05-23 11:32:05,516 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 135 to 79. [2019-05-23 11:32:05,516 INFO L146 ILogger]: Start removeUnreachable. Operand 79 states. [2019-05-23 11:32:05,517 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2019-05-23 11:32:05,517 INFO L146 ILogger]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 44 [2019-05-23 11:32:05,518 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:05,518 INFO L146 ILogger]: Abstraction has 79 states and 87 transitions. [2019-05-23 11:32:05,518 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:32:05,518 INFO L146 ILogger]: Start isEmpty. Operand 79 states and 87 transitions. [2019-05-23 11:32:05,519 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:32:05,520 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:05,520 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:32:05,520 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:05,520 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:05,521 INFO L146 ILogger]: Analyzing trace with hash 2032162551, now seen corresponding path program 1 times [2019-05-23 11:32:05,521 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:05,521 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:05,522 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:05,522 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:05,522 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:05,526 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:05,526 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:05,526 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 11:32:05,540 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:05,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:05,560 INFO L146 ILogger]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:32:05,562 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:05,677 INFO L146 ILogger]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:32:05,705 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:05,705 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:32:05,706 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:32:05,706 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:32:05,706 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:32:05,707 INFO L146 ILogger]: Start difference. First operand 79 states and 87 transitions. Second operand 6 states. [2019-05-23 11:32:05,978 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:05,978 INFO L146 ILogger]: Finished difference Result 196 states and 216 transitions. [2019-05-23 11:32:05,980 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:32:05,980 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 58 [2019-05-23 11:32:05,981 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:05,982 INFO L146 ILogger]: With dead ends: 196 [2019-05-23 11:32:05,982 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:32:05,986 INFO L146 ILogger]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:32:05,987 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:32:06,006 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 101. [2019-05-23 11:32:06,009 INFO L146 ILogger]: Start removeUnreachable. Operand 101 states. [2019-05-23 11:32:06,010 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2019-05-23 11:32:06,010 INFO L146 ILogger]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 58 [2019-05-23 11:32:06,011 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:06,011 INFO L146 ILogger]: Abstraction has 101 states and 111 transitions. [2019-05-23 11:32:06,011 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:32:06,011 INFO L146 ILogger]: Start isEmpty. Operand 101 states and 111 transitions. [2019-05-23 11:32:06,018 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:32:06,018 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:06,018 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1] [2019-05-23 11:32:06,019 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:06,019 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:06,019 INFO L146 ILogger]: Analyzing trace with hash 151301913, now seen corresponding path program 2 times [2019-05-23 11:32:06,019 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:06,020 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:06,020 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:06,021 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:06,021 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:06,028 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:06,028 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:06,028 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:06,044 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:32:06,067 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-05-23 11:32:06,068 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:06,068 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:32:06,073 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:06,341 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:32:06,342 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:06,345 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:32:06,346 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:32:06,346 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:32:06,392 INFO L146 ILogger]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-05-23 11:32:06,414 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:32:06,415 INFO L146 ILogger]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-05-23 11:32:06,415 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:32:06,415 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:32:06,415 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:32:06,416 INFO L146 ILogger]: Start difference. First operand 101 states and 111 transitions. Second operand 10 states. [2019-05-23 11:32:06,944 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:06,945 INFO L146 ILogger]: Finished difference Result 193 states and 213 transitions. [2019-05-23 11:32:06,945 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:32:06,945 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 68 [2019-05-23 11:32:06,946 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:06,947 INFO L146 ILogger]: With dead ends: 193 [2019-05-23 11:32:06,948 INFO L146 ILogger]: Without dead ends: 191 [2019-05-23 11:32:06,952 INFO L146 ILogger]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:32:06,952 INFO L146 ILogger]: Start minimizeSevpa. Operand 191 states. [2019-05-23 11:32:06,975 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 191 to 130. [2019-05-23 11:32:06,976 INFO L146 ILogger]: Start removeUnreachable. Operand 130 states. [2019-05-23 11:32:06,977 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2019-05-23 11:32:06,977 INFO L146 ILogger]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 68 [2019-05-23 11:32:06,977 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:06,977 INFO L146 ILogger]: Abstraction has 130 states and 145 transitions. [2019-05-23 11:32:06,978 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:32:06,978 INFO L146 ILogger]: Start isEmpty. Operand 130 states and 145 transitions. [2019-05-23 11:32:06,983 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:32:06,984 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:06,984 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:32:06,984 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:06,984 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:06,984 INFO L146 ILogger]: Analyzing trace with hash 828288720, now seen corresponding path program 1 times [2019-05-23 11:32:06,985 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:06,985 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:06,986 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:06,986 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:06,986 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:06,990 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:06,991 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:06,991 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:07,004 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:07,024 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:07,025 INFO L146 ILogger]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:32:07,028 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:07,135 INFO L146 ILogger]: Checked inductivity of 36 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:32:07,154 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:07,154 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-05-23 11:32:07,155 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:32:07,155 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:32:07,155 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:32:07,156 INFO L146 ILogger]: Start difference. First operand 130 states and 145 transitions. Second operand 7 states. [2019-05-23 11:32:07,548 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:07,549 INFO L146 ILogger]: Finished difference Result 309 states and 345 transitions. [2019-05-23 11:32:07,549 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:32:07,549 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 71 [2019-05-23 11:32:07,550 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:07,551 INFO L146 ILogger]: With dead ends: 309 [2019-05-23 11:32:07,552 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:32:07,553 INFO L146 ILogger]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:32:07,553 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:32:07,562 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 157. [2019-05-23 11:32:07,562 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:32:07,563 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2019-05-23 11:32:07,563 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 175 transitions. Word has length 71 [2019-05-23 11:32:07,564 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:07,564 INFO L146 ILogger]: Abstraction has 157 states and 175 transitions. [2019-05-23 11:32:07,564 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:32:07,564 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 175 transitions. [2019-05-23 11:32:07,566 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:32:07,566 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:07,566 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:32:07,566 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:07,567 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:07,567 INFO L146 ILogger]: Analyzing trace with hash 1023703586, now seen corresponding path program 2 times [2019-05-23 11:32:07,567 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:07,567 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:07,568 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:07,568 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:07,568 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:07,572 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:07,572 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:07,573 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:07,599 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:32:07,622 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:32:07,622 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:07,623 INFO L146 ILogger]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:32:07,632 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:07,977 INFO L146 ILogger]: Checked inductivity of 67 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-05-23 11:32:07,995 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:07,996 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-05-23 11:32:07,996 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:32:07,996 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:32:07,997 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:32:07,997 INFO L146 ILogger]: Start difference. First operand 157 states and 175 transitions. Second operand 8 states. [2019-05-23 11:32:08,238 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:08,239 INFO L146 ILogger]: Finished difference Result 365 states and 406 transitions. [2019-05-23 11:32:08,239 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:32:08,239 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 81 [2019-05-23 11:32:08,240 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:08,242 INFO L146 ILogger]: With dead ends: 365 [2019-05-23 11:32:08,242 INFO L146 ILogger]: Without dead ends: 221 [2019-05-23 11:32:08,243 INFO L146 ILogger]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:32:08,244 INFO L146 ILogger]: Start minimizeSevpa. Operand 221 states. [2019-05-23 11:32:08,253 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 221 to 184. [2019-05-23 11:32:08,254 INFO L146 ILogger]: Start removeUnreachable. Operand 184 states. [2019-05-23 11:32:08,254 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2019-05-23 11:32:08,255 INFO L146 ILogger]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 81 [2019-05-23 11:32:08,255 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:08,255 INFO L146 ILogger]: Abstraction has 184 states and 205 transitions. [2019-05-23 11:32:08,255 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:32:08,255 INFO L146 ILogger]: Start isEmpty. Operand 184 states and 205 transitions. [2019-05-23 11:32:08,257 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:32:08,257 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:08,257 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:32:08,257 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:08,257 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:08,258 INFO L146 ILogger]: Analyzing trace with hash 88842448, now seen corresponding path program 3 times [2019-05-23 11:32:08,258 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:08,258 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:08,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:08,259 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:08,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:08,263 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:08,263 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:08,264 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:08,281 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:32:08,296 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:32:08,296 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:08,297 INFO L146 ILogger]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:32:08,299 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:08,343 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-05-23 11:32:08,362 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:08,362 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:32:08,363 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:32:08,363 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:32:08,363 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:32:08,363 INFO L146 ILogger]: Start difference. First operand 184 states and 205 transitions. Second operand 5 states. [2019-05-23 11:32:08,710 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:08,710 INFO L146 ILogger]: Finished difference Result 626 states and 704 transitions. [2019-05-23 11:32:08,711 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:32:08,711 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 91 [2019-05-23 11:32:08,711 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:08,729 INFO L146 ILogger]: With dead ends: 626 [2019-05-23 11:32:08,730 INFO L146 ILogger]: Without dead ends: 484 [2019-05-23 11:32:08,731 INFO L146 ILogger]: 0 DeclaredPredicates, 90 GetRequests, 87 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 11:32:08,731 INFO L146 ILogger]: Start minimizeSevpa. Operand 484 states. [2019-05-23 11:32:08,751 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 484 to 213. [2019-05-23 11:32:08,751 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:32:08,752 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 235 transitions. [2019-05-23 11:32:08,752 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 235 transitions. Word has length 91 [2019-05-23 11:32:08,752 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:08,753 INFO L146 ILogger]: Abstraction has 213 states and 235 transitions. [2019-05-23 11:32:08,753 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:32:08,753 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 235 transitions. [2019-05-23 11:32:08,754 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:32:08,754 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:08,756 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:32:08,756 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:08,756 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:08,756 INFO L146 ILogger]: Analyzing trace with hash 2047068852, now seen corresponding path program 4 times [2019-05-23 11:32:08,757 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:08,757 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:08,758 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:08,758 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:08,758 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:08,763 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:08,763 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:08,763 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:08,777 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:32:08,809 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:32:08,809 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:08,810 INFO L146 ILogger]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:32:08,812 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:09,004 INFO L146 ILogger]: Checked inductivity of 303 backedges. 37 proven. 132 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2019-05-23 11:32:09,024 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:09,024 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-05-23 11:32:09,024 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:32:09,025 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:32:09,025 INFO L146 ILogger]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:32:09,025 INFO L146 ILogger]: Start difference. First operand 213 states and 235 transitions. Second operand 10 states. [2019-05-23 11:32:10,033 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:10,033 INFO L146 ILogger]: Finished difference Result 564 states and 615 transitions. [2019-05-23 11:32:10,033 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:32:10,033 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 120 [2019-05-23 11:32:10,034 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:10,037 INFO L146 ILogger]: With dead ends: 564 [2019-05-23 11:32:10,037 INFO L146 ILogger]: Without dead ends: 506 [2019-05-23 11:32:10,038 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=390, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:32:10,039 INFO L146 ILogger]: Start minimizeSevpa. Operand 506 states. [2019-05-23 11:32:10,051 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 506 to 286. [2019-05-23 11:32:10,051 INFO L146 ILogger]: Start removeUnreachable. Operand 286 states. [2019-05-23 11:32:10,052 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2019-05-23 11:32:10,053 INFO L146 ILogger]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 120 [2019-05-23 11:32:10,053 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:10,053 INFO L146 ILogger]: Abstraction has 286 states and 319 transitions. [2019-05-23 11:32:10,053 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:32:10,053 INFO L146 ILogger]: Start isEmpty. Operand 286 states and 319 transitions. [2019-05-23 11:32:10,055 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 150 [2019-05-23 11:32:10,055 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:10,055 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 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] [2019-05-23 11:32:10,056 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:10,056 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:10,056 INFO L146 ILogger]: Analyzing trace with hash 143195097, now seen corresponding path program 5 times [2019-05-23 11:32:10,056 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:10,056 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:10,057 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:10,057 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:10,057 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:10,061 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:10,062 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:10,062 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:10,071 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:32:18,765 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-05-23 11:32:18,766 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:18,769 INFO L146 ILogger]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:32:18,771 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:18,908 INFO L146 ILogger]: Checked inductivity of 493 backedges. 139 proven. 55 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2019-05-23 11:32:18,928 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:18,928 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-05-23 11:32:18,928 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:32:18,929 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:32:18,929 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:32:18,929 INFO L146 ILogger]: Start difference. First operand 286 states and 319 transitions. Second operand 9 states. [2019-05-23 11:32:19,323 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:19,324 INFO L146 ILogger]: Finished difference Result 631 states and 707 transitions. [2019-05-23 11:32:19,324 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:32:19,324 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 149 [2019-05-23 11:32:19,325 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:19,327 INFO L146 ILogger]: With dead ends: 631 [2019-05-23 11:32:19,327 INFO L146 ILogger]: Without dead ends: 385 [2019-05-23 11:32:19,328 INFO L146 ILogger]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:32:19,329 INFO L146 ILogger]: Start minimizeSevpa. Operand 385 states. [2019-05-23 11:32:19,341 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 385 to 332. [2019-05-23 11:32:19,341 INFO L146 ILogger]: Start removeUnreachable. Operand 332 states. [2019-05-23 11:32:19,342 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 332 states to 332 states and 370 transitions. [2019-05-23 11:32:19,342 INFO L146 ILogger]: Start accepts. Automaton has 332 states and 370 transitions. Word has length 149 [2019-05-23 11:32:19,343 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:19,343 INFO L146 ILogger]: Abstraction has 332 states and 370 transitions. [2019-05-23 11:32:19,343 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:32:19,343 INFO L146 ILogger]: Start isEmpty. Operand 332 states and 370 transitions. [2019-05-23 11:32:19,345 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 170 [2019-05-23 11:32:19,345 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:19,345 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 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] [2019-05-23 11:32:19,345 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:19,346 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:19,346 INFO L146 ILogger]: Analyzing trace with hash -513846517, now seen corresponding path program 6 times [2019-05-23 11:32:19,346 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:19,346 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:19,347 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:19,347 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:19,347 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:19,352 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:19,352 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:19,352 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:19,367 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:32:19,398 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:32:19,399 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:19,400 INFO L146 ILogger]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:32:19,402 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:19,521 INFO L146 ILogger]: Checked inductivity of 709 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2019-05-23 11:32:19,541 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:19,542 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:32:19,542 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:32:19,542 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:32:19,543 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:32:19,543 INFO L146 ILogger]: Start difference. First operand 332 states and 370 transitions. Second operand 6 states. [2019-05-23 11:32:19,928 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:19,928 INFO L146 ILogger]: Finished difference Result 996 states and 1120 transitions. [2019-05-23 11:32:19,929 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:32:19,929 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 169 [2019-05-23 11:32:19,930 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:19,935 INFO L146 ILogger]: With dead ends: 996 [2019-05-23 11:32:19,935 INFO L146 ILogger]: Without dead ends: 745 [2019-05-23 11:32:19,936 INFO L146 ILogger]: 0 DeclaredPredicates, 168 GetRequests, 164 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 11:32:19,937 INFO L146 ILogger]: Start minimizeSevpa. Operand 745 states. [2019-05-23 11:32:19,965 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 745 to 366. [2019-05-23 11:32:19,965 INFO L146 ILogger]: Start removeUnreachable. Operand 366 states. [2019-05-23 11:32:19,967 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 366 states to 366 states and 405 transitions. [2019-05-23 11:32:19,968 INFO L146 ILogger]: Start accepts. Automaton has 366 states and 405 transitions. Word has length 169 [2019-05-23 11:32:19,968 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:19,968 INFO L146 ILogger]: Abstraction has 366 states and 405 transitions. [2019-05-23 11:32:19,969 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:32:19,969 INFO L146 ILogger]: Start isEmpty. Operand 366 states and 405 transitions. [2019-05-23 11:32:19,974 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 204 [2019-05-23 11:32:19,974 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:19,975 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 12, 12, 12, 11, 11, 3, 3, 3, 3, 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] [2019-05-23 11:32:19,975 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:19,976 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:19,976 INFO L146 ILogger]: Analyzing trace with hash -690659200, now seen corresponding path program 7 times [2019-05-23 11:32:19,976 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:19,976 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:19,978 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:19,978 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:19,978 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:19,986 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:19,986 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:19,986 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:20,007 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:20,077 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:20,079 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:32:20,084 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:20,649 INFO L146 ILogger]: Checked inductivity of 1183 backedges. 391 proven. 81 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2019-05-23 11:32:20,668 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:20,668 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-05-23 11:32:20,669 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:32:20,669 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:32:20,670 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:32:20,670 INFO L146 ILogger]: Start difference. First operand 366 states and 405 transitions. Second operand 10 states. [2019-05-23 11:32:21,232 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:21,233 INFO L146 ILogger]: Finished difference Result 797 states and 885 transitions. [2019-05-23 11:32:21,233 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:32:21,233 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 203 [2019-05-23 11:32:21,234 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:21,237 INFO L146 ILogger]: With dead ends: 797 [2019-05-23 11:32:21,237 INFO L146 ILogger]: Without dead ends: 476 [2019-05-23 11:32:21,238 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:32:21,239 INFO L146 ILogger]: Start minimizeSevpa. Operand 476 states. [2019-05-23 11:32:21,254 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 476 to 417. [2019-05-23 11:32:21,254 INFO L146 ILogger]: Start removeUnreachable. Operand 417 states. [2019-05-23 11:32:21,255 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 417 states to 417 states and 461 transitions. [2019-05-23 11:32:21,256 INFO L146 ILogger]: Start accepts. Automaton has 417 states and 461 transitions. Word has length 203 [2019-05-23 11:32:21,256 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:21,256 INFO L146 ILogger]: Abstraction has 417 states and 461 transitions. [2019-05-23 11:32:21,256 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:32:21,256 INFO L146 ILogger]: Start isEmpty. Operand 417 states and 461 transitions. [2019-05-23 11:32:21,259 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 229 [2019-05-23 11:32:21,259 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:21,259 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 14, 14, 14, 13, 13, 3, 3, 3, 3, 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] [2019-05-23 11:32:21,260 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:21,260 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:21,260 INFO L146 ILogger]: Analyzing trace with hash -194418147, now seen corresponding path program 8 times [2019-05-23 11:32:21,260 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:21,260 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:21,261 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:21,261 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:21,261 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:21,267 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:21,267 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:21,267 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:21,306 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:32:21,355 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:32:21,356 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:21,357 INFO L146 ILogger]: Trace formula consists of 337 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:32:21,360 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:21,591 INFO L146 ILogger]: Checked inductivity of 1604 backedges. 525 proven. 112 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2019-05-23 11:32:21,609 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:21,609 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-05-23 11:32:21,610 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:32:21,610 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:32:21,610 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:32:21,610 INFO L146 ILogger]: Start difference. First operand 417 states and 461 transitions. Second operand 11 states. [2019-05-23 11:32:21,910 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:21,910 INFO L146 ILogger]: Finished difference Result 896 states and 993 transitions. [2019-05-23 11:32:21,910 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:32:21,910 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 228 [2019-05-23 11:32:21,911 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:21,912 INFO L146 ILogger]: With dead ends: 896 [2019-05-23 11:32:21,913 INFO L146 ILogger]: Without dead ends: 529 [2019-05-23 11:32:21,914 INFO L146 ILogger]: 0 DeclaredPredicates, 227 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:32:21,914 INFO L146 ILogger]: Start minimizeSevpa. Operand 529 states. [2019-05-23 11:32:21,931 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 529 to 468. [2019-05-23 11:32:21,931 INFO L146 ILogger]: Start removeUnreachable. Operand 468 states. [2019-05-23 11:32:21,932 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 468 states to 468 states and 517 transitions. [2019-05-23 11:32:21,932 INFO L146 ILogger]: Start accepts. Automaton has 468 states and 517 transitions. Word has length 228 [2019-05-23 11:32:21,933 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:21,933 INFO L146 ILogger]: Abstraction has 468 states and 517 transitions. [2019-05-23 11:32:21,933 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:32:21,933 INFO L146 ILogger]: Start isEmpty. Operand 468 states and 517 transitions. [2019-05-23 11:32:21,934 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 254 [2019-05-23 11:32:21,935 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:21,935 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 16, 16, 16, 15, 15, 3, 3, 3, 3, 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] [2019-05-23 11:32:21,935 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:21,935 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:21,936 INFO L146 ILogger]: Analyzing trace with hash 1070830624, now seen corresponding path program 9 times [2019-05-23 11:32:21,936 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:21,936 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:21,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:21,937 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:21,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:21,942 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:21,942 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:21,943 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:21,958 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:32:21,983 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:32:21,984 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:21,985 INFO L146 ILogger]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:32:21,988 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:22,107 INFO L146 ILogger]: Checked inductivity of 2090 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2019-05-23 11:32:22,126 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:22,127 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:32:22,127 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:32:22,127 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:32:22,127 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:32:22,127 INFO L146 ILogger]: Start difference. First operand 468 states and 517 transitions. Second operand 6 states. [2019-05-23 11:32:22,376 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:22,376 INFO L146 ILogger]: Finished difference Result 1041 states and 1161 transitions. [2019-05-23 11:32:22,376 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:32:22,377 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 253 [2019-05-23 11:32:22,377 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:22,382 INFO L146 ILogger]: With dead ends: 1041 [2019-05-23 11:32:22,382 INFO L146 ILogger]: Without dead ends: 959 [2019-05-23 11:32:22,383 INFO L146 ILogger]: 0 DeclaredPredicates, 252 GetRequests, 248 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 11:32:22,384 INFO L146 ILogger]: Start minimizeSevpa. Operand 959 states. [2019-05-23 11:32:22,422 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 959 to 588. [2019-05-23 11:32:22,422 INFO L146 ILogger]: Start removeUnreachable. Operand 588 states. [2019-05-23 11:32:22,423 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 588 states to 588 states and 655 transitions. [2019-05-23 11:32:22,424 INFO L146 ILogger]: Start accepts. Automaton has 588 states and 655 transitions. Word has length 253 [2019-05-23 11:32:22,424 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:22,424 INFO L146 ILogger]: Abstraction has 588 states and 655 transitions. [2019-05-23 11:32:22,424 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:32:22,425 INFO L146 ILogger]: Start isEmpty. Operand 588 states and 655 transitions. [2019-05-23 11:32:22,427 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 298 [2019-05-23 11:32:22,427 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:22,427 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 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, 1] [2019-05-23 11:32:22,428 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:22,428 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:22,428 INFO L146 ILogger]: Analyzing trace with hash 555289332, now seen corresponding path program 10 times [2019-05-23 11:32:22,428 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:22,428 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:22,429 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:22,429 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:22,429 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:22,438 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:22,438 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:22,439 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:22,453 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:32:22,511 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:32:22,511 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:22,513 INFO L146 ILogger]: Trace formula consists of 382 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:32:22,517 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:22,808 INFO L146 ILogger]: Checked inductivity of 2911 backedges. 117 proven. 1635 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2019-05-23 11:32:22,828 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:22,828 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-05-23 11:32:22,828 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:32:22,829 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:32:22,829 INFO L146 ILogger]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:32:22,829 INFO L146 ILogger]: Start difference. First operand 588 states and 655 transitions. Second operand 15 states. [2019-05-23 11:32:24,465 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:24,465 INFO L146 ILogger]: Finished difference Result 1346 states and 1459 transitions. [2019-05-23 11:32:24,466 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-05-23 11:32:24,466 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 297 [2019-05-23 11:32:24,467 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:24,472 INFO L146 ILogger]: With dead ends: 1346 [2019-05-23 11:32:24,472 INFO L146 ILogger]: Without dead ends: 1264 [2019-05-23 11:32:24,474 INFO L146 ILogger]: 0 DeclaredPredicates, 341 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=945, Invalid=2025, Unknown=0, NotChecked=0, Total=2970 [2019-05-23 11:32:24,476 INFO L146 ILogger]: Start minimizeSevpa. Operand 1264 states. [2019-05-23 11:32:24,506 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1264 to 708. [2019-05-23 11:32:24,506 INFO L146 ILogger]: Start removeUnreachable. Operand 708 states. [2019-05-23 11:32:24,507 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 708 states to 708 states and 793 transitions. [2019-05-23 11:32:24,508 INFO L146 ILogger]: Start accepts. Automaton has 708 states and 793 transitions. Word has length 297 [2019-05-23 11:32:24,508 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:24,508 INFO L146 ILogger]: Abstraction has 708 states and 793 transitions. [2019-05-23 11:32:24,509 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:32:24,509 INFO L146 ILogger]: Start isEmpty. Operand 708 states and 793 transitions. [2019-05-23 11:32:24,511 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 342 [2019-05-23 11:32:24,511 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:24,512 INFO L146 ILogger]: trace histogram [32, 32, 32, 31, 31, 24, 24, 24, 24, 24, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:32:24,512 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:24,512 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:24,512 INFO L146 ILogger]: Analyzing trace with hash 363238344, now seen corresponding path program 11 times [2019-05-23 11:32:24,513 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:24,513 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:24,514 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:24,514 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:24,514 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:24,520 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:24,521 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:24,521 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:32:24,538 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1