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/rev-2-n-u_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:32:06,003 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:32:06,006 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:32:06,021 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:32:06,022 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:32:06,023 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:32:06,027 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:32:06,029 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:32:06,032 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:32:06,036 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:32:06,037 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:32:06,037 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:32:06,038 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:32:06,039 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:32:06,042 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:32:06,042 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:32:06,045 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:32:06,050 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:32:06,057 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:32:06,061 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:32:06,062 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:32:06,063 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:32:06,073 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:32:06,073 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:32:06,074 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:32:06,074 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:32:06,075 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:32:06,076 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:32:06,076 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:32:06,077 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:32:06,077 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:32:06,079 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:32:06,080 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:32:06,080 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:32:06,083 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:32:06,083 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:32:06,083 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:32:06,084 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:32:06,085 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:32:06,085 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:32:06,108 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:32:06,109 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:32:06,110 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:32:06,110 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:32:06,111 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:32:06,111 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:32:06,111 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:32:06,111 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:32:06,111 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:32:06,112 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:32:06,112 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:32:06,112 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:32:06,112 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:32:06,112 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:32:06,113 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:32:06,114 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:32:06,114 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:32:06,114 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:32:06,115 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:32:06,115 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:32:06,115 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:32:06,115 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:32:06,115 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:32:06,115 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:32:06,116 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:32:06,116 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:32:06,117 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:32:06,117 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:32:06,117 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 11:32:06,152 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:32:06,164 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:32:06,167 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:32:06,169 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:32:06,169 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:32:06,170 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-multidimensional/rev-2-n-u_true-unreach-call.i [2019-05-23 11:32:06,225 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89202ed7/8c3aa3d7b4714cb1b3cc1c96b5620deb/FLAG253cab086 [2019-05-23 11:32:06,632 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:32:06,632 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-multidimensional/rev-2-n-u_true-unreach-call.i [2019-05-23 11:32:06,639 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89202ed7/8c3aa3d7b4714cb1b3cc1c96b5620deb/FLAG253cab086 [2019-05-23 11:32:06,994 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89202ed7/8c3aa3d7b4714cb1b3cc1c96b5620deb [2019-05-23 11:32:07,008 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:32:07,010 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:32:07,010 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:32:07,011 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:32:07,014 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:32:07,016 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:32:06" (1/1) ... [2019-05-23 11:32:07,019 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400455f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07, skipping insertion in model container [2019-05-23 11:32:07,019 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:32:06" (1/1) ... [2019-05-23 11:32:07,027 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:32:07,050 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:32:07,282 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:32:07,289 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:32:07,326 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:32:07,348 INFO L146 ILogger]: Completed translation [2019-05-23 11:32:07,349 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07 WrapperNode [2019-05-23 11:32:07,349 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:32:07,350 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:32:07,350 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:32:07,350 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:32:07,359 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (1/1) ... [2019-05-23 11:32:07,368 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (1/1) ... [2019-05-23 11:32:07,397 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:32:07,397 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:32:07,397 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:32:07,398 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:32:07,405 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (1/1) ... [2019-05-23 11:32:07,405 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (1/1) ... [2019-05-23 11:32:07,407 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (1/1) ... [2019-05-23 11:32:07,408 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (1/1) ... [2019-05-23 11:32:07,414 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (1/1) ... [2019-05-23 11:32:07,420 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (1/1) ... [2019-05-23 11:32:07,422 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (1/1) ... [2019-05-23 11:32:07,424 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:32:07,425 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:32:07,425 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:32:07,425 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:32:07,426 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (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 11:32:07,576 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:32:07,577 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:32:07,577 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:32:07,577 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:32:07,577 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:32:07,577 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:32:08,078 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:32:08,079 INFO L146 ILogger]: Removed 12 assume(true) statements. [2019-05-23 11:32:08,080 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:32:08 BoogieIcfgContainer [2019-05-23 11:32:08,080 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:32:08,081 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:32:08,081 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:32:08,084 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:32:08,085 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:32:06" (1/3) ... [2019-05-23 11:32:08,085 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc4a84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:32:08, skipping insertion in model container [2019-05-23 11:32:08,086 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:32:07" (2/3) ... [2019-05-23 11:32:08,086 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc4a84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:32:08, skipping insertion in model container [2019-05-23 11:32:08,086 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:32:08" (3/3) ... [2019-05-23 11:32:08,088 INFO L146 ILogger]: Analyzing ICFG rev-2-n-u_true-unreach-call.i [2019-05-23 11:32:08,098 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:32:08,109 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:32:08,129 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:32:08,156 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:32:08,157 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:32:08,157 INFO L146 ILogger]: Hoare is true [2019-05-23 11:32:08,157 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:32:08,157 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:32:08,157 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:32:08,157 INFO L146 ILogger]: Difference is false [2019-05-23 11:32:08,157 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:32:08,157 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:32:08,171 INFO L146 ILogger]: Start isEmpty. Operand 56 states. [2019-05-23 11:32:08,178 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:32:08,178 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:08,179 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] [2019-05-23 11:32:08,181 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:08,185 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:08,185 INFO L146 ILogger]: Analyzing trace with hash 1787453388, now seen corresponding path program 1 times [2019-05-23 11:32:08,186 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:08,187 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:08,231 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:08,232 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:08,232 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:08,264 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:08,265 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:08,265 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 11:32:08,275 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:08,302 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:08,308 INFO L146 ILogger]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:32:08,316 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:08,416 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 11:32:08,448 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:32:08,448 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:32:08,452 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:32:08,466 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:32:08,467 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:32:08,469 INFO L146 ILogger]: Start difference. First operand 56 states. Second operand 4 states. [2019-05-23 11:32:08,826 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:08,826 INFO L146 ILogger]: Finished difference Result 130 states and 167 transitions. [2019-05-23 11:32:08,827 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:32:08,828 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 29 [2019-05-23 11:32:08,829 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:08,842 INFO L146 ILogger]: With dead ends: 130 [2019-05-23 11:32:08,843 INFO L146 ILogger]: Without dead ends: 79 [2019-05-23 11:32:08,848 INFO L146 ILogger]: 0 DeclaredPredicates, 28 GetRequests, 26 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 11:32:08,862 INFO L146 ILogger]: Start minimizeSevpa. Operand 79 states. [2019-05-23 11:32:08,881 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 79 to 50. [2019-05-23 11:32:08,883 INFO L146 ILogger]: Start removeUnreachable. Operand 50 states. [2019-05-23 11:32:08,884 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2019-05-23 11:32:08,886 INFO L146 ILogger]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 29 [2019-05-23 11:32:08,887 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:08,887 INFO L146 ILogger]: Abstraction has 50 states and 55 transitions. [2019-05-23 11:32:08,887 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:32:08,887 INFO L146 ILogger]: Start isEmpty. Operand 50 states and 55 transitions. [2019-05-23 11:32:08,889 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:32:08,889 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:08,889 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] [2019-05-23 11:32:08,890 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:08,890 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:08,890 INFO L146 ILogger]: Analyzing trace with hash -774458708, now seen corresponding path program 1 times [2019-05-23 11:32:08,891 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:08,891 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:08,892 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:08,892 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:08,893 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:08,899 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:08,899 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:08,899 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 11:32:08,910 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:08,934 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:08,935 INFO L146 ILogger]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:32:08,937 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:08,977 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:32:09,006 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:32:09,006 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:32:09,008 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:32:09,008 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:32:09,009 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:32:09,010 INFO L146 ILogger]: Start difference. First operand 50 states and 55 transitions. Second operand 4 states. [2019-05-23 11:32:09,216 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:09,216 INFO L146 ILogger]: Finished difference Result 112 states and 125 transitions. [2019-05-23 11:32:09,216 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:32:09,217 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 37 [2019-05-23 11:32:09,217 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:09,219 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:32:09,220 INFO L146 ILogger]: Without dead ends: 76 [2019-05-23 11:32:09,221 INFO L146 ILogger]: 0 DeclaredPredicates, 36 GetRequests, 34 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 11:32:09,221 INFO L146 ILogger]: Start minimizeSevpa. Operand 76 states. [2019-05-23 11:32:09,233 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 76 to 53. [2019-05-23 11:32:09,233 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:32:09,235 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2019-05-23 11:32:09,235 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 37 [2019-05-23 11:32:09,235 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:09,235 INFO L146 ILogger]: Abstraction has 53 states and 58 transitions. [2019-05-23 11:32:09,235 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:32:09,236 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 58 transitions. [2019-05-23 11:32:09,238 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:32:09,239 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:09,239 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] [2019-05-23 11:32:09,239 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:09,239 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:09,240 INFO L146 ILogger]: Analyzing trace with hash -745009120, now seen corresponding path program 1 times [2019-05-23 11:32:09,241 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:09,241 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:09,242 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:09,242 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:09,242 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:09,255 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:09,255 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:09,256 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 11:32:09,275 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:09,306 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:09,307 INFO L146 ILogger]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:32:09,310 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:09,374 INFO L146 ILogger]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:32:09,401 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:09,401 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:32:09,401 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:32:09,402 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:32:09,402 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:32:09,402 INFO L146 ILogger]: Start difference. First operand 53 states and 58 transitions. Second operand 5 states. [2019-05-23 11:32:09,627 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:09,628 INFO L146 ILogger]: Finished difference Result 137 states and 150 transitions. [2019-05-23 11:32:09,628 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:32:09,628 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 47 [2019-05-23 11:32:09,629 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:09,630 INFO L146 ILogger]: With dead ends: 137 [2019-05-23 11:32:09,630 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:32:09,631 INFO L146 ILogger]: 0 DeclaredPredicates, 46 GetRequests, 43 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 11:32:09,631 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:32:09,639 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 73. [2019-05-23 11:32:09,639 INFO L146 ILogger]: Start removeUnreachable. Operand 73 states. [2019-05-23 11:32:09,640 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2019-05-23 11:32:09,640 INFO L146 ILogger]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 47 [2019-05-23 11:32:09,641 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:09,641 INFO L146 ILogger]: Abstraction has 73 states and 79 transitions. [2019-05-23 11:32:09,641 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:32:09,641 INFO L146 ILogger]: Start isEmpty. Operand 73 states and 79 transitions. [2019-05-23 11:32:09,642 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:32:09,643 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:09,643 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] [2019-05-23 11:32:09,643 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:09,643 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:09,644 INFO L146 ILogger]: Analyzing trace with hash 2076994604, now seen corresponding path program 2 times [2019-05-23 11:32:09,644 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:09,644 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:09,645 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:09,645 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:32:09,645 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:09,650 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:09,650 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:09,650 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 11:32:09,667 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:32:09,699 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:32:09,699 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:09,700 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:32:09,703 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:10,046 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 11:32:10,074 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:10,075 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:32:10,075 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:32:10,075 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:32:10,075 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:32:10,076 INFO L146 ILogger]: Start difference. First operand 73 states and 79 transitions. Second operand 6 states. [2019-05-23 11:32:10,494 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:10,494 INFO L146 ILogger]: Finished difference Result 179 states and 193 transitions. [2019-05-23 11:32:10,495 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:32:10,495 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 57 [2019-05-23 11:32:10,495 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:10,498 INFO L146 ILogger]: With dead ends: 179 [2019-05-23 11:32:10,498 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:32:10,499 INFO L146 ILogger]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:32:10,500 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:32:10,520 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 93. [2019-05-23 11:32:10,520 INFO L146 ILogger]: Start removeUnreachable. Operand 93 states. [2019-05-23 11:32:10,523 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2019-05-23 11:32:10,523 INFO L146 ILogger]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 57 [2019-05-23 11:32:10,523 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:10,524 INFO L146 ILogger]: Abstraction has 93 states and 100 transitions. [2019-05-23 11:32:10,524 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:32:10,524 INFO L146 ILogger]: Start isEmpty. Operand 93 states and 100 transitions. [2019-05-23 11:32:10,525 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:32:10,525 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:10,525 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] [2019-05-23 11:32:10,526 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:10,528 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:10,528 INFO L146 ILogger]: Analyzing trace with hash -1329338208, now seen corresponding path program 3 times [2019-05-23 11:32:10,528 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:10,528 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:10,531 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:10,531 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:10,531 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:10,540 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:10,540 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:10,540 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 11:32:10,551 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:32:10,569 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:32:10,570 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:10,571 INFO L146 ILogger]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:32:10,573 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:10,644 INFO L146 ILogger]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-05-23 11:32:10,663 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:10,663 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:32:10,664 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:32:10,664 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:32:10,664 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:32:10,664 INFO L146 ILogger]: Start difference. First operand 93 states and 100 transitions. Second operand 5 states. [2019-05-23 11:32:10,814 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:32:10,814 INFO L146 ILogger]: Finished difference Result 299 states and 323 transitions. [2019-05-23 11:32:10,815 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:32:10,815 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 67 [2019-05-23 11:32:10,816 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:32:10,819 INFO L146 ILogger]: With dead ends: 299 [2019-05-23 11:32:10,819 INFO L146 ILogger]: Without dead ends: 239 [2019-05-23 11:32:10,820 INFO L146 ILogger]: 0 DeclaredPredicates, 66 GetRequests, 63 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 11:32:10,821 INFO L146 ILogger]: Start minimizeSevpa. Operand 239 states. [2019-05-23 11:32:10,833 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 239 to 131. [2019-05-23 11:32:10,833 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:32:10,835 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions. [2019-05-23 11:32:10,835 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 67 [2019-05-23 11:32:10,835 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:32:10,835 INFO L146 ILogger]: Abstraction has 131 states and 140 transitions. [2019-05-23 11:32:10,835 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:32:10,836 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 140 transitions. [2019-05-23 11:32:10,837 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:32:10,837 INFO L146 ILogger]: Found error trace [2019-05-23 11:32:10,838 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2019-05-23 11:32:10,838 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:32:10,838 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:32:10,839 INFO L146 ILogger]: Analyzing trace with hash 1045464716, now seen corresponding path program 4 times [2019-05-23 11:32:10,839 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:32:10,839 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:32:10,840 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:10,840 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:32:10,840 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:32:10,846 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:32:10,846 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:32:10,846 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 11:32:10,866 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:32:10,911 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:32:10,911 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:32:10,913 INFO L146 ILogger]: Trace formula consists of 153 conjuncts, 55 conjunts are in the unsatisfiable core [2019-05-23 11:32:10,918 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:32:10,963 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:32:10,964 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:11,036 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:32:11,037 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:32:11,037 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:32:11,081 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:32:11,082 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:32:11,082 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:11,104 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:32:11,104 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:32:11,105 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:32:11,346 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 45 [2019-05-23 11:32:11,346 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:11,378 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:32:11,379 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:32:11,379 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2019-05-23 11:32:11,545 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:32:11,546 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 120 [2019-05-23 11:32:11,548 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:11,602 INFO L146 ILogger]: treesize reduction 60, result has 53.8 percent of original size [2019-05-23 11:32:11,603 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 11:32:11,604 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:53 [2019-05-23 11:32:11,695 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:32:11,696 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2019-05-23 11:32:11,697 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:11,709 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:32:11,709 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 11:32:11,710 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:49, output treesize:36 [2019-05-23 11:32:11,824 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:32:11,825 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 154 [2019-05-23 11:32:11,827 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:11,892 INFO L146 ILogger]: treesize reduction 144, result has 34.8 percent of original size [2019-05-23 11:32:11,892 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:32:11,893 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:81, output treesize:77 [2019-05-23 11:32:12,469 WARN L146 ILogger]: Spent 337.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-05-23 11:32:12,470 INFO L146 ILogger]: treesize reduction 139, result has 51.2 percent of original size [2019-05-23 11:32:12,470 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 113 treesize of output 243 [2019-05-23 11:32:12,473 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:12,522 INFO L146 ILogger]: treesize reduction 206, result has 36.6 percent of original size [2019-05-23 11:32:12,522 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:32:12,523 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2019-05-23 11:32:12,944 WARN L146 ILogger]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2019-05-23 11:32:12,945 INFO L146 ILogger]: treesize reduction 358, result has 36.6 percent of original size [2019-05-23 11:32:12,946 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 156 treesize of output 334 [2019-05-23 11:32:12,948 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:13,059 WARN L146 ILogger]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-05-23 11:32:13,060 INFO L146 ILogger]: treesize reduction 302, result has 34.9 percent of original size [2019-05-23 11:32:13,062 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-05-23 11:32:13,062 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:166, output treesize:162 [2019-05-23 11:32:13,709 WARN L146 ILogger]: Spent 165.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2019-05-23 11:32:13,709 INFO L146 ILogger]: treesize reduction 234, result has 44.0 percent of original size [2019-05-23 11:32:13,710 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 180 treesize of output 202 [2019-05-23 11:32:13,716 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:32:13,755 INFO L146 ILogger]: treesize reduction 171, result has 4.5 percent of original size [2019-05-23 11:32:13,756 INFO L146 ILogger]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:32:13,756 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 7 variables, input treesize:184, output treesize:3 [2019-05-23 11:32:13,907 INFO L146 ILogger]: Checked inductivity of 186 backedges. 23 proven. 118 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:32:13,928 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:32:13,929 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2019-05-23 11:32:13,929 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:32:13,929 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:32:13,931 INFO L146 ILogger]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:32:13,931 INFO L146 ILogger]: Start difference. First operand 131 states and 140 transitions. Second operand 27 states.