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/copy-2-u_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:30:40,954 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:30:40,956 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:30:40,974 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:30:40,974 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:30:40,976 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:30:40,977 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:30:40,980 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:30:40,983 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:30:40,984 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:30:40,986 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:30:40,987 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:30:40,987 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:30:40,989 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:30:40,999 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:30:41,000 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:30:41,001 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:30:41,003 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:30:41,006 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:30:41,011 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:30:41,012 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:30:41,015 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:30:41,017 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:30:41,017 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:30:41,017 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:30:41,018 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:30:41,018 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:30:41,019 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:30:41,019 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:30:41,020 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:30:41,022 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:30:41,023 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:30:41,024 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:30:41,024 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:30:41,026 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:30:41,026 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:30:41,026 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:30:41,027 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:30:41,028 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:30:41,028 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:30:41,055 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:30:41,055 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:30:41,057 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:30:41,058 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:30:41,059 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:30:41,059 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:30:41,059 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:30:41,059 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:30:41,059 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:30:41,059 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:30:41,060 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:30:41,060 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:30:41,060 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:30:41,060 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:30:41,060 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:30:41,061 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:30:41,062 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:30:41,062 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:30:41,062 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:30:41,062 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:30:41,063 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:30:41,063 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:30:41,063 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:30:41,063 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:30:41,064 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:30:41,064 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:30:41,064 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:30:41,064 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:30:41,064 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 11:30:41,122 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:30:41,136 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:30:41,141 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:30:41,143 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:30:41,145 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:30:41,146 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-multidimensional/copy-2-u_true-unreach-call.i [2019-05-23 11:30:41,223 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ca29053/734c09fbbb6247fd8827e2e756dd13a4/FLAGd654d11ea [2019-05-23 11:30:41,666 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:30:41,666 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-multidimensional/copy-2-u_true-unreach-call.i [2019-05-23 11:30:41,672 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ca29053/734c09fbbb6247fd8827e2e756dd13a4/FLAGd654d11ea [2019-05-23 11:30:42,048 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ca29053/734c09fbbb6247fd8827e2e756dd13a4 [2019-05-23 11:30:42,056 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:30:42,057 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:30:42,058 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:42,058 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:30:42,061 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:30:42,062 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,065 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9ae149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42, skipping insertion in model container [2019-05-23 11:30:42,066 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,074 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:30:42,097 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:30:42,323 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:42,329 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:30:42,354 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:42,374 INFO L146 ILogger]: Completed translation [2019-05-23 11:30:42,375 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42 WrapperNode [2019-05-23 11:30:42,375 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:42,376 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:42,376 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:30:42,376 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:30:42,384 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,393 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,418 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:42,418 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:30:42,418 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:30:42,418 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:30:42,528 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,528 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,530 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,531 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,540 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,556 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,557 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (1/1) ... [2019-05-23 11:30:42,563 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:30:42,563 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:30:42,564 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:30:42,564 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:30:42,568 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (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 11:30:42,633 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:30:42,634 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:30:42,634 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:30:42,634 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:30:42,634 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:30:42,634 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:30:43,180 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:30:43,180 INFO L146 ILogger]: Removed 12 assume(true) statements. [2019-05-23 11:30:43,181 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:43 BoogieIcfgContainer [2019-05-23 11:30:43,182 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:30:43,183 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:30:43,183 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:30:43,186 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:30:43,186 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:30:42" (1/3) ... [2019-05-23 11:30:43,187 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9e55f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:43, skipping insertion in model container [2019-05-23 11:30:43,187 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:42" (2/3) ... [2019-05-23 11:30:43,188 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9e55f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:43, skipping insertion in model container [2019-05-23 11:30:43,188 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:43" (3/3) ... [2019-05-23 11:30:43,191 INFO L146 ILogger]: Analyzing ICFG copy-2-u_true-unreach-call.i [2019-05-23 11:30:43,201 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:30:43,208 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:30:43,221 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:30:43,251 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:30:43,252 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:30:43,252 INFO L146 ILogger]: Hoare is true [2019-05-23 11:30:43,252 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:30:43,253 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:30:43,253 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:30:43,253 INFO L146 ILogger]: Difference is false [2019-05-23 11:30:43,253 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:30:43,253 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:30:43,268 INFO L146 ILogger]: Start isEmpty. Operand 54 states. [2019-05-23 11:30:43,275 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:30:43,275 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:43,276 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] [2019-05-23 11:30:43,278 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:43,284 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:43,284 INFO L146 ILogger]: Analyzing trace with hash -917501045, now seen corresponding path program 1 times [2019-05-23 11:30:43,289 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:43,290 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:43,342 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:43,342 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:43,342 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:43,379 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:43,379 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:43,379 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 11:30:43,390 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:43,416 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:43,418 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:43,427 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:43,504 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 11:30:43,531 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:43,531 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:30:43,535 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:30:43,546 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:30:43,547 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:30:43,549 INFO L146 ILogger]: Start difference. First operand 54 states. Second operand 4 states. [2019-05-23 11:30:44,025 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:44,025 INFO L146 ILogger]: Finished difference Result 128 states and 165 transitions. [2019-05-23 11:30:44,026 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:30:44,027 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 27 [2019-05-23 11:30:44,028 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:44,040 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:30:44,040 INFO L146 ILogger]: Without dead ends: 77 [2019-05-23 11:30:44,044 INFO L146 ILogger]: 0 DeclaredPredicates, 26 GetRequests, 24 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 11:30:44,063 INFO L146 ILogger]: Start minimizeSevpa. Operand 77 states. [2019-05-23 11:30:44,083 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 77 to 48. [2019-05-23 11:30:44,084 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:30:44,086 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2019-05-23 11:30:44,088 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 27 [2019-05-23 11:30:44,088 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:44,088 INFO L146 ILogger]: Abstraction has 48 states and 53 transitions. [2019-05-23 11:30:44,088 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:30:44,089 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 53 transitions. [2019-05-23 11:30:44,090 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:30:44,090 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:44,090 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] [2019-05-23 11:30:44,091 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:44,091 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:44,091 INFO L146 ILogger]: Analyzing trace with hash -1279619477, now seen corresponding path program 1 times [2019-05-23 11:30:44,092 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:44,092 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:44,093 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:44,093 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:44,093 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:44,098 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:44,098 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:44,099 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 11:30:44,114 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:44,136 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:44,137 INFO L146 ILogger]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:44,140 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:44,176 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 11:30:44,195 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:44,196 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:30:44,197 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:30:44,197 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:30:44,198 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:30:44,198 INFO L146 ILogger]: Start difference. First operand 48 states and 53 transitions. Second operand 4 states. [2019-05-23 11:30:44,455 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:44,455 INFO L146 ILogger]: Finished difference Result 110 states and 123 transitions. [2019-05-23 11:30:44,456 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:30:44,456 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 35 [2019-05-23 11:30:44,457 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:44,458 INFO L146 ILogger]: With dead ends: 110 [2019-05-23 11:30:44,458 INFO L146 ILogger]: Without dead ends: 74 [2019-05-23 11:30:44,459 INFO L146 ILogger]: 0 DeclaredPredicates, 34 GetRequests, 32 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 11:30:44,460 INFO L146 ILogger]: Start minimizeSevpa. Operand 74 states. [2019-05-23 11:30:44,472 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 74 to 51. [2019-05-23 11:30:44,472 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:30:44,473 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2019-05-23 11:30:44,473 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 35 [2019-05-23 11:30:44,474 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:44,474 INFO L146 ILogger]: Abstraction has 51 states and 56 transitions. [2019-05-23 11:30:44,474 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:30:44,474 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 56 transitions. [2019-05-23 11:30:44,478 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 46 [2019-05-23 11:30:44,478 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:44,478 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 11:30:44,479 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:44,479 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:44,479 INFO L146 ILogger]: Analyzing trace with hash 1662396383, now seen corresponding path program 1 times [2019-05-23 11:30:44,479 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:44,480 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:44,481 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:44,481 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:44,481 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:44,491 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:44,491 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:44,491 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 11:30:44,506 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:44,529 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:44,532 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:30:44,535 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:44,590 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 11:30:44,615 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:44,615 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:30:44,615 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:30:44,616 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:30:44,616 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:44,616 INFO L146 ILogger]: Start difference. First operand 51 states and 56 transitions. Second operand 5 states. [2019-05-23 11:30:45,097 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:45,098 INFO L146 ILogger]: Finished difference Result 135 states and 148 transitions. [2019-05-23 11:30:45,100 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:30:45,100 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 45 [2019-05-23 11:30:45,101 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:45,102 INFO L146 ILogger]: With dead ends: 135 [2019-05-23 11:30:45,102 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:30:45,105 INFO L146 ILogger]: 0 DeclaredPredicates, 44 GetRequests, 41 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 11:30:45,105 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:30:45,118 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 71. [2019-05-23 11:30:45,121 INFO L146 ILogger]: Start removeUnreachable. Operand 71 states. [2019-05-23 11:30:45,123 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2019-05-23 11:30:45,123 INFO L146 ILogger]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 45 [2019-05-23 11:30:45,123 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:45,123 INFO L146 ILogger]: Abstraction has 71 states and 77 transitions. [2019-05-23 11:30:45,123 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:30:45,123 INFO L146 ILogger]: Start isEmpty. Operand 71 states and 77 transitions. [2019-05-23 11:30:45,125 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 56 [2019-05-23 11:30:45,125 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:45,125 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] [2019-05-23 11:30:45,125 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:45,126 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:45,128 INFO L146 ILogger]: Analyzing trace with hash -1706442773, now seen corresponding path program 2 times [2019-05-23 11:30:45,128 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:45,128 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:45,129 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,129 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:45,129 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,134 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:45,134 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:45,134 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 11:30:45,144 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:45,166 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:45,166 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:45,167 INFO L146 ILogger]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:45,170 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:45,250 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 11:30:45,274 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:45,274 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:30:45,275 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:30:45,275 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:30:45,275 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:30:45,275 INFO L146 ILogger]: Start difference. First operand 71 states and 77 transitions. Second operand 6 states. [2019-05-23 11:30:45,586 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:45,586 INFO L146 ILogger]: Finished difference Result 177 states and 191 transitions. [2019-05-23 11:30:45,586 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:30:45,587 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 55 [2019-05-23 11:30:45,587 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:45,588 INFO L146 ILogger]: With dead ends: 177 [2019-05-23 11:30:45,588 INFO L146 ILogger]: Without dead ends: 118 [2019-05-23 11:30:45,589 INFO L146 ILogger]: 0 DeclaredPredicates, 54 GetRequests, 50 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 11:30:45,589 INFO L146 ILogger]: Start minimizeSevpa. Operand 118 states. [2019-05-23 11:30:45,599 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 118 to 91. [2019-05-23 11:30:45,600 INFO L146 ILogger]: Start removeUnreachable. Operand 91 states. [2019-05-23 11:30:45,601 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2019-05-23 11:30:45,601 INFO L146 ILogger]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 55 [2019-05-23 11:30:45,601 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:45,602 INFO L146 ILogger]: Abstraction has 91 states and 98 transitions. [2019-05-23 11:30:45,602 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:30:45,604 INFO L146 ILogger]: Start isEmpty. Operand 91 states and 98 transitions. [2019-05-23 11:30:45,605 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 66 [2019-05-23 11:30:45,605 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:45,605 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] [2019-05-23 11:30:45,606 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:45,607 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:45,607 INFO L146 ILogger]: Analyzing trace with hash -2056947617, now seen corresponding path program 3 times [2019-05-23 11:30:45,607 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:45,607 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:45,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,608 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:45,609 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,619 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:45,620 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:45,620 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 11:30:45,630 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:45,647 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:30:45,648 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:45,648 INFO L146 ILogger]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:30:45,651 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:45,697 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 11:30:45,725 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:45,725 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:30:45,725 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:30:45,725 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:30:45,726 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:45,726 INFO L146 ILogger]: Start difference. First operand 91 states and 98 transitions. Second operand 5 states. [2019-05-23 11:30:46,032 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:46,032 INFO L146 ILogger]: Finished difference Result 297 states and 321 transitions. [2019-05-23 11:30:46,032 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:30:46,032 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 65 [2019-05-23 11:30:46,033 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:46,035 INFO L146 ILogger]: With dead ends: 297 [2019-05-23 11:30:46,035 INFO L146 ILogger]: Without dead ends: 237 [2019-05-23 11:30:46,036 INFO L146 ILogger]: 0 DeclaredPredicates, 64 GetRequests, 61 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 11:30:46,037 INFO L146 ILogger]: Start minimizeSevpa. Operand 237 states. [2019-05-23 11:30:46,054 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 237 to 129. [2019-05-23 11:30:46,057 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:30:46,058 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2019-05-23 11:30:46,059 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 65 [2019-05-23 11:30:46,059 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:46,059 INFO L146 ILogger]: Abstraction has 129 states and 138 transitions. [2019-05-23 11:30:46,059 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:30:46,060 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 138 transitions. [2019-05-23 11:30:46,066 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:30:46,066 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:46,066 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] [2019-05-23 11:30:46,069 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:46,069 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:46,069 INFO L146 ILogger]: Analyzing trace with hash 683866699, now seen corresponding path program 4 times [2019-05-23 11:30:46,070 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:46,070 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:46,071 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,071 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:46,071 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,077 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:46,077 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:46,077 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 11:30:46,095 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:46,137 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:46,137 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:46,140 INFO L146 ILogger]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:30:46,148 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:46,396 INFO L146 ILogger]: Checked inductivity of 186 backedges. 7 proven. 68 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:30:46,418 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:46,418 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-05-23 11:30:46,419 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:46,419 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:46,420 INFO L146 ILogger]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:46,420 INFO L146 ILogger]: Start difference. First operand 129 states and 138 transitions. Second operand 9 states. [2019-05-23 11:30:46,848 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:46,848 INFO L146 ILogger]: Finished difference Result 394 states and 422 transitions. [2019-05-23 11:30:46,849 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:30:46,849 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 103 [2019-05-23 11:30:46,849 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:46,852 INFO L146 ILogger]: With dead ends: 394 [2019-05-23 11:30:46,852 INFO L146 ILogger]: Without dead ends: 315 [2019-05-23 11:30:46,855 INFO L146 ILogger]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:30:46,855 INFO L146 ILogger]: Start minimizeSevpa. Operand 315 states. [2019-05-23 11:30:46,880 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 315 to 167. [2019-05-23 11:30:46,881 INFO L146 ILogger]: Start removeUnreachable. Operand 167 states. [2019-05-23 11:30:46,882 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 167 states to 167 states and 178 transitions. [2019-05-23 11:30:46,882 INFO L146 ILogger]: Start accepts. Automaton has 167 states and 178 transitions. Word has length 103 [2019-05-23 11:30:46,882 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:46,883 INFO L146 ILogger]: Abstraction has 167 states and 178 transitions. [2019-05-23 11:30:46,888 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:46,888 INFO L146 ILogger]: Start isEmpty. Operand 167 states and 178 transitions. [2019-05-23 11:30:46,890 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 142 [2019-05-23 11:30:46,890 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:46,890 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2019-05-23 11:30:46,893 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:46,893 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:46,893 INFO L146 ILogger]: Analyzing trace with hash 938668063, now seen corresponding path program 5 times [2019-05-23 11:30:46,893 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:46,894 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:46,895 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,895 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:46,896 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,903 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:46,903 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:46,903 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 11:30:46,919 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1