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/diff-2-n-u_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:30:57,276 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:30:57,279 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:30:57,294 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:30:57,295 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:30:57,297 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:30:57,298 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:30:57,300 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:30:57,302 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:30:57,303 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:30:57,312 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:30:57,312 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:30:57,316 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:30:57,317 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:30:57,318 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:30:57,318 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:30:57,320 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:30:57,322 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:30:57,324 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:30:57,326 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:30:57,327 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:30:57,330 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:30:57,332 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:30:57,333 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:30:57,333 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:30:57,334 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:30:57,335 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:30:57,336 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:30:57,337 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:30:57,337 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:30:57,339 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:30:57,340 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:30:57,342 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:30:57,342 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:30:57,343 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:30:57,343 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:30:57,343 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:30:57,345 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:30:57,346 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:30:57,346 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:30:57,372 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:30:57,372 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:30:57,373 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:30:57,373 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:30:57,373 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:30:57,374 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:30:57,374 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:30:57,374 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:30:57,374 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:30:57,375 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:30:57,375 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:30:57,375 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:30:57,375 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:30:57,375 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:30:57,375 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:30:57,376 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:30:57,376 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:30:57,376 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:30:57,376 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:30:57,376 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:30:57,377 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:30:57,377 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:30:57,377 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:30:57,377 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:30:57,377 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:30:57,378 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:30:57,378 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:30:57,378 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:30:57,378 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 11:30:57,417 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:30:57,431 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:30:57,436 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:30:57,437 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:30:57,438 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:30:57,439 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-multidimensional/diff-2-n-u_true-unreach-call.i [2019-05-23 11:30:57,502 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/520753cb1/63d69cc8fbab4f33a6fc494d6ed95501/FLAGc9ab494ae [2019-05-23 11:30:57,938 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:30:57,939 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-multidimensional/diff-2-n-u_true-unreach-call.i [2019-05-23 11:30:57,946 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/520753cb1/63d69cc8fbab4f33a6fc494d6ed95501/FLAGc9ab494ae [2019-05-23 11:30:58,293 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/520753cb1/63d69cc8fbab4f33a6fc494d6ed95501 [2019-05-23 11:30:58,302 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:30:58,305 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:30:58,306 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:58,307 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:30:58,310 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:30:58,311 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,314 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e922eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58, skipping insertion in model container [2019-05-23 11:30:58,314 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,322 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:30:58,345 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:30:58,532 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:58,539 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:30:58,578 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:58,596 INFO L146 ILogger]: Completed translation [2019-05-23 11:30:58,597 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58 WrapperNode [2019-05-23 11:30:58,597 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:58,598 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:58,598 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:30:58,598 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:30:58,604 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,613 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,636 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:58,636 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:30:58,637 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:30:58,637 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:30:58,645 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,646 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,648 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,649 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,656 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,746 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,748 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (1/1) ... [2019-05-23 11:30:58,750 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:30:58,751 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:30:58,751 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:30:58,751 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:30:58,752 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (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 11:30:58,806 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:30:58,806 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:30:58,806 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:30:58,807 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:30:58,807 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:30:58,807 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:30:59,337 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:30:59,338 INFO L146 ILogger]: Removed 14 assume(true) statements. [2019-05-23 11:30:59,339 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:59 BoogieIcfgContainer [2019-05-23 11:30:59,339 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:30:59,340 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:30:59,340 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:30:59,343 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:30:59,344 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:30:58" (1/3) ... [2019-05-23 11:30:59,344 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c433622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:59, skipping insertion in model container [2019-05-23 11:30:59,345 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:58" (2/3) ... [2019-05-23 11:30:59,345 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c433622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:59, skipping insertion in model container [2019-05-23 11:30:59,345 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:59" (3/3) ... [2019-05-23 11:30:59,347 INFO L146 ILogger]: Analyzing ICFG diff-2-n-u_true-unreach-call.i [2019-05-23 11:30:59,357 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:30:59,365 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:30:59,382 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:30:59,415 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:30:59,415 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:30:59,416 INFO L146 ILogger]: Hoare is true [2019-05-23 11:30:59,416 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:30:59,416 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:30:59,416 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:30:59,416 INFO L146 ILogger]: Difference is false [2019-05-23 11:30:59,417 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:30:59,417 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:30:59,434 INFO L146 ILogger]: Start isEmpty. Operand 74 states. [2019-05-23 11:30:59,442 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 34 [2019-05-23 11:30:59,442 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:59,443 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:59,445 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:59,451 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:59,451 INFO L146 ILogger]: Analyzing trace with hash 1907065048, now seen corresponding path program 1 times [2019-05-23 11:30:59,453 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:59,453 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:59,497 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:59,497 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:59,497 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:59,530 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:59,531 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:59,531 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 11:30:59,543 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:59,573 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:59,576 INFO L146 ILogger]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:59,582 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:59,788 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 11:30:59,819 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:59,819 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:30:59,822 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:30:59,832 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:30:59,833 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:30:59,836 INFO L146 ILogger]: Start difference. First operand 74 states. Second operand 4 states. [2019-05-23 11:31:00,180 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:00,180 INFO L146 ILogger]: Finished difference Result 180 states and 229 transitions. [2019-05-23 11:31:00,181 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:31:00,183 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 33 [2019-05-23 11:31:00,184 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:00,196 INFO L146 ILogger]: With dead ends: 180 [2019-05-23 11:31:00,196 INFO L146 ILogger]: Without dead ends: 109 [2019-05-23 11:31:00,200 INFO L146 ILogger]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:00,217 INFO L146 ILogger]: Start minimizeSevpa. Operand 109 states. [2019-05-23 11:31:00,239 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 109 to 67. [2019-05-23 11:31:00,240 INFO L146 ILogger]: Start removeUnreachable. Operand 67 states. [2019-05-23 11:31:00,242 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2019-05-23 11:31:00,243 INFO L146 ILogger]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 33 [2019-05-23 11:31:00,244 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:00,244 INFO L146 ILogger]: Abstraction has 67 states and 74 transitions. [2019-05-23 11:31:00,244 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:31:00,245 INFO L146 ILogger]: Start isEmpty. Operand 67 states and 74 transitions. [2019-05-23 11:31:00,247 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 46 [2019-05-23 11:31:00,247 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:00,248 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:00,248 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:00,249 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:00,249 INFO L146 ILogger]: Analyzing trace with hash 1896478501, now seen corresponding path program 1 times [2019-05-23 11:31:00,249 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:00,249 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:00,250 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:00,250 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:00,251 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:00,258 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:00,259 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:00,260 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:00,284 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:00,309 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:00,310 INFO L146 ILogger]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:31:00,313 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:00,508 INFO L146 ILogger]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:31:00,540 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:31:00,541 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:31:00,542 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:31:00,543 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:31:00,546 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:00,546 INFO L146 ILogger]: Start difference. First operand 67 states and 74 transitions. Second operand 4 states. [2019-05-23 11:31:00,817 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:00,817 INFO L146 ILogger]: Finished difference Result 158 states and 176 transitions. [2019-05-23 11:31:00,822 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:31:00,823 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 45 [2019-05-23 11:31:00,823 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:00,825 INFO L146 ILogger]: With dead ends: 158 [2019-05-23 11:31:00,825 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:31:00,826 INFO L146 ILogger]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:00,827 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:31:00,845 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 71. [2019-05-23 11:31:00,845 INFO L146 ILogger]: Start removeUnreachable. Operand 71 states. [2019-05-23 11:31:00,848 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2019-05-23 11:31:00,848 INFO L146 ILogger]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 45 [2019-05-23 11:31:00,849 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:00,852 INFO L146 ILogger]: Abstraction has 71 states and 78 transitions. [2019-05-23 11:31:00,852 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:31:00,852 INFO L146 ILogger]: Start isEmpty. Operand 71 states and 78 transitions. [2019-05-23 11:31:00,854 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:31:00,854 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:00,855 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:00,855 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:00,855 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:00,856 INFO L146 ILogger]: Analyzing trace with hash -1792579750, now seen corresponding path program 1 times [2019-05-23 11:31:00,856 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:00,856 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:00,857 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:00,857 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:00,857 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:00,864 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:00,864 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:00,864 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:00,873 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:00,929 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:00,930 INFO L146 ILogger]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:31:00,935 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:01,245 INFO L146 ILogger]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-05-23 11:31:01,275 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:01,276 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:31:01,276 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:31:01,277 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:31:01,278 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:01,278 INFO L146 ILogger]: Start difference. First operand 71 states and 78 transitions. Second operand 5 states. [2019-05-23 11:31:01,565 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:01,565 INFO L146 ILogger]: Finished difference Result 195 states and 213 transitions. [2019-05-23 11:31:01,569 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:31:01,569 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 64 [2019-05-23 11:31:01,569 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:01,571 INFO L146 ILogger]: With dead ends: 195 [2019-05-23 11:31:01,571 INFO L146 ILogger]: Without dead ends: 138 [2019-05-23 11:31:01,572 INFO L146 ILogger]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:01,572 INFO L146 ILogger]: Start minimizeSevpa. Operand 138 states. [2019-05-23 11:31:01,581 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 138 to 102. [2019-05-23 11:31:01,582 INFO L146 ILogger]: Start removeUnreachable. Operand 102 states. [2019-05-23 11:31:01,582 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2019-05-23 11:31:01,583 INFO L146 ILogger]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 64 [2019-05-23 11:31:01,583 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:01,583 INFO L146 ILogger]: Abstraction has 102 states and 110 transitions. [2019-05-23 11:31:01,583 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:31:01,583 INFO L146 ILogger]: Start isEmpty. Operand 102 states and 110 transitions. [2019-05-23 11:31:01,586 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 84 [2019-05-23 11:31:01,586 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:01,586 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:01,587 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:01,587 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:01,587 INFO L146 ILogger]: Analyzing trace with hash -658385403, now seen corresponding path program 2 times [2019-05-23 11:31:01,587 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:01,587 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:01,588 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:01,588 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:01,589 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:01,594 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:01,594 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:01,594 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:01,611 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:31:01,648 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:31:01,648 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:01,649 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:31:01,653 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:01,728 INFO L146 ILogger]: Checked inductivity of 28 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-05-23 11:31:01,757 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:01,757 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:31:01,758 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:31:01,758 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:31:01,758 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:31:01,758 INFO L146 ILogger]: Start difference. First operand 102 states and 110 transitions. Second operand 6 states. [2019-05-23 11:31:02,332 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:02,333 INFO L146 ILogger]: Finished difference Result 259 states and 278 transitions. [2019-05-23 11:31:02,333 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:31:02,334 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 83 [2019-05-23 11:31:02,334 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:02,336 INFO L146 ILogger]: With dead ends: 259 [2019-05-23 11:31:02,336 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:31:02,340 INFO L146 ILogger]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:31:02,341 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:31:02,364 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 133. [2019-05-23 11:31:02,364 INFO L146 ILogger]: Start removeUnreachable. Operand 133 states. [2019-05-23 11:31:02,365 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2019-05-23 11:31:02,365 INFO L146 ILogger]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 83 [2019-05-23 11:31:02,366 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:02,366 INFO L146 ILogger]: Abstraction has 133 states and 142 transitions. [2019-05-23 11:31:02,366 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:31:02,366 INFO L146 ILogger]: Start isEmpty. Operand 133 states and 142 transitions. [2019-05-23 11:31:02,371 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 103 [2019-05-23 11:31:02,371 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:02,371 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:02,372 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:02,372 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:02,372 INFO L146 ILogger]: Analyzing trace with hash -1554479750, now seen corresponding path program 3 times [2019-05-23 11:31:02,372 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:02,372 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:02,373 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:02,374 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:02,374 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:02,379 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:02,380 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:02,380 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:02,396 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:31:02,429 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:31:02,430 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:02,431 INFO L146 ILogger]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:31:02,440 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:02,791 INFO L146 ILogger]: Checked inductivity of 69 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-05-23 11:31:02,832 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:02,833 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:31:02,833 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:31:02,834 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:31:02,834 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:02,834 INFO L146 ILogger]: Start difference. First operand 133 states and 142 transitions. Second operand 5 states. [2019-05-23 11:31:03,210 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:03,210 INFO L146 ILogger]: Finished difference Result 449 states and 480 transitions. [2019-05-23 11:31:03,210 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:31:03,210 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 102 [2019-05-23 11:31:03,211 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:03,212 INFO L146 ILogger]: With dead ends: 449 [2019-05-23 11:31:03,213 INFO L146 ILogger]: Without dead ends: 352 [2019-05-23 11:31:03,214 INFO L146 ILogger]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:03,214 INFO L146 ILogger]: Start minimizeSevpa. Operand 352 states. [2019-05-23 11:31:03,230 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 352 to 202. [2019-05-23 11:31:03,230 INFO L146 ILogger]: Start removeUnreachable. Operand 202 states. [2019-05-23 11:31:03,231 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 202 states to 202 states and 214 transitions. [2019-05-23 11:31:03,231 INFO L146 ILogger]: Start accepts. Automaton has 202 states and 214 transitions. Word has length 102 [2019-05-23 11:31:03,232 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:03,232 INFO L146 ILogger]: Abstraction has 202 states and 214 transitions. [2019-05-23 11:31:03,232 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:31:03,232 INFO L146 ILogger]: Start isEmpty. Operand 202 states and 214 transitions. [2019-05-23 11:31:03,235 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 172 [2019-05-23 11:31:03,235 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:03,236 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:03,236 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:03,236 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:03,236 INFO L146 ILogger]: Analyzing trace with hash 1455194904, now seen corresponding path program 4 times [2019-05-23 11:31:03,237 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:03,237 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:03,238 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:03,238 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:03,238 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:03,243 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:03,244 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:03,244 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:03,255 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:31:04,297 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:31:04,298 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:04,300 INFO L146 ILogger]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:31:04,306 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:04,409 INFO L146 ILogger]: Checked inductivity of 339 backedges. 64 proven. 21 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2019-05-23 11:31:04,430 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:04,431 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-05-23 11:31:04,431 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:31:04,431 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:31:04,432 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:31:04,432 INFO L146 ILogger]: Start difference. First operand 202 states and 214 transitions. Second operand 7 states. [2019-05-23 11:31:05,036 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:05,037 INFO L146 ILogger]: Finished difference Result 473 states and 501 transitions. [2019-05-23 11:31:05,037 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:31:05,037 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 171 [2019-05-23 11:31:05,037 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:05,039 INFO L146 ILogger]: With dead ends: 473 [2019-05-23 11:31:05,039 INFO L146 ILogger]: Without dead ends: 305 [2019-05-23 11:31:05,040 INFO L146 ILogger]: 0 DeclaredPredicates, 170 GetRequests, 165 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 11:31:05,041 INFO L146 ILogger]: Start minimizeSevpa. Operand 305 states. [2019-05-23 11:31:05,053 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 305 to 252. [2019-05-23 11:31:05,054 INFO L146 ILogger]: Start removeUnreachable. Operand 252 states. [2019-05-23 11:31:05,055 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 252 states to 252 states and 265 transitions. [2019-05-23 11:31:05,055 INFO L146 ILogger]: Start accepts. Automaton has 252 states and 265 transitions. Word has length 171 [2019-05-23 11:31:05,055 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:05,055 INFO L146 ILogger]: Abstraction has 252 states and 265 transitions. [2019-05-23 11:31:05,056 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:31:05,056 INFO L146 ILogger]: Start isEmpty. Operand 252 states and 265 transitions. [2019-05-23 11:31:05,059 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 210 [2019-05-23 11:31:05,059 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:05,059 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:05,060 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:05,060 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:05,060 INFO L146 ILogger]: Analyzing trace with hash -1560528654, now seen corresponding path program 5 times [2019-05-23 11:31:05,060 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:05,060 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:05,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:05,061 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:05,062 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:05,067 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:05,068 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:05,068 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 11:31:05,085 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1