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-tiling/mlceu_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:24:47,178 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:24:47,180 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:24:47,192 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:24:47,192 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:24:47,193 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:24:47,194 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:24:47,196 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:24:47,198 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:24:47,199 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:24:47,199 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:24:47,200 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:24:47,201 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:24:47,202 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:24:47,203 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:24:47,204 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:24:47,204 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:24:47,206 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:24:47,209 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:24:47,210 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:24:47,211 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:24:47,212 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:24:47,215 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:24:47,215 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:24:47,216 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:24:47,217 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:24:47,217 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:24:47,218 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:24:47,218 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:24:47,219 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:24:47,220 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:24:47,221 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:24:47,222 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:24:47,222 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:24:47,223 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:24:47,223 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:24:47,224 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:24:47,225 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:24:47,225 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:24:47,226 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:24:47,241 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:24:47,241 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:24:47,243 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:24:47,243 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:24:47,243 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:24:47,243 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:24:47,244 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:24:47,244 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:24:47,244 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:24:47,244 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:24:47,244 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:24:47,244 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:24:47,245 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:24:47,245 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:24:47,245 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:24:47,245 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:24:47,245 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:24:47,246 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:24:47,246 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:24:47,246 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:24:47,246 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:24:47,246 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:24:47,247 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:24:47,247 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:24:47,247 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:24:47,247 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:24:47,247 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:24:47,248 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:24:47,248 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 11:24:47,280 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:24:47,303 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:24:47,307 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:24:47,309 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:24:47,311 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:24:47,312 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/mlceu_false-unreach-call.i [2019-05-23 11:24:47,371 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8ba4848/5b5c0be3baaf46bb80d7cec8eb3d0175/FLAGba3598aea [2019-05-23 11:24:47,840 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:24:47,840 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/mlceu_false-unreach-call.i [2019-05-23 11:24:47,846 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8ba4848/5b5c0be3baaf46bb80d7cec8eb3d0175/FLAGba3598aea [2019-05-23 11:24:48,206 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8ba4848/5b5c0be3baaf46bb80d7cec8eb3d0175 [2019-05-23 11:24:48,217 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:24:48,219 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:24:48,220 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:48,220 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:24:48,226 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:24:48,227 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,231 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f11e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48, skipping insertion in model container [2019-05-23 11:24:48,231 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,239 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:24:48,260 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:24:48,498 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:48,503 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:24:48,533 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:48,563 INFO L146 ILogger]: Completed translation [2019-05-23 11:24:48,564 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48 WrapperNode [2019-05-23 11:24:48,564 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:48,565 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:48,565 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:24:48,566 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:24:48,575 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,590 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,617 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:48,618 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:24:48,618 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:24:48,618 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:24:48,630 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,630 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,632 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,632 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,640 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,647 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,651 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (1/1) ... [2019-05-23 11:24:48,657 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:24:48,658 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:24:48,658 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:24:48,659 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:24:48,660 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (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 11:24:48,811 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:24:48,811 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:24:48,811 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:24:48,811 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:24:48,812 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:24:48,812 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:24:49,224 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:24:49,225 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:24:49,226 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:49 BoogieIcfgContainer [2019-05-23 11:24:49,226 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:24:49,227 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:24:49,227 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:24:49,230 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:24:49,231 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:24:48" (1/3) ... [2019-05-23 11:24:49,231 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6da094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:49, skipping insertion in model container [2019-05-23 11:24:49,232 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:48" (2/3) ... [2019-05-23 11:24:49,232 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6da094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:49, skipping insertion in model container [2019-05-23 11:24:49,232 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:49" (3/3) ... [2019-05-23 11:24:49,234 INFO L146 ILogger]: Analyzing ICFG mlceu_false-unreach-call.i [2019-05-23 11:24:49,243 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:24:49,254 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:24:49,272 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:24:49,300 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:24:49,301 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:24:49,301 INFO L146 ILogger]: Hoare is true [2019-05-23 11:24:49,301 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:24:49,302 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:24:49,302 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:24:49,302 INFO L146 ILogger]: Difference is false [2019-05-23 11:24:49,302 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:24:49,302 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:24:49,317 INFO L146 ILogger]: Start isEmpty. Operand 38 states. [2019-05-23 11:24:49,324 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:24:49,324 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:49,326 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] [2019-05-23 11:24:49,328 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:49,333 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:49,334 INFO L146 ILogger]: Analyzing trace with hash -359675961, now seen corresponding path program 1 times [2019-05-23 11:24:49,336 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:49,337 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:49,387 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:49,388 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:49,388 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:49,434 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:49,481 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 11:24:49,487 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:49,488 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:24:49,491 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:24:49,501 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:24:49,502 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:24:49,504 INFO L146 ILogger]: Start difference. First operand 38 states. Second operand 2 states. [2019-05-23 11:24:49,518 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:49,518 INFO L146 ILogger]: Finished difference Result 57 states and 65 transitions. [2019-05-23 11:24:49,519 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:24:49,520 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:24:49,521 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:49,530 INFO L146 ILogger]: With dead ends: 57 [2019-05-23 11:24:49,530 INFO L146 ILogger]: Without dead ends: 32 [2019-05-23 11:24:49,533 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:24:49,549 INFO L146 ILogger]: Start minimizeSevpa. Operand 32 states. [2019-05-23 11:24:49,564 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-05-23 11:24:49,565 INFO L146 ILogger]: Start removeUnreachable. Operand 32 states. [2019-05-23 11:24:49,567 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2019-05-23 11:24:49,568 INFO L146 ILogger]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 21 [2019-05-23 11:24:49,569 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:49,569 INFO L146 ILogger]: Abstraction has 32 states and 34 transitions. [2019-05-23 11:24:49,569 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:24:49,569 INFO L146 ILogger]: Start isEmpty. Operand 32 states and 34 transitions. [2019-05-23 11:24:49,570 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:24:49,570 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:49,570 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] [2019-05-23 11:24:49,571 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:49,571 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:49,571 INFO L146 ILogger]: Analyzing trace with hash 982337208, now seen corresponding path program 1 times [2019-05-23 11:24:49,572 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:49,572 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:49,573 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:49,573 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:49,573 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:49,599 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:49,688 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 11:24:49,689 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:49,691 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:24:49,693 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:24:49,693 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:24:49,694 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:24:49,695 INFO L146 ILogger]: Start difference. First operand 32 states and 34 transitions. Second operand 4 states. [2019-05-23 11:24:49,857 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:49,857 INFO L146 ILogger]: Finished difference Result 68 states and 74 transitions. [2019-05-23 11:24:49,859 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:24:49,859 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 21 [2019-05-23 11:24:49,859 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:49,860 INFO L146 ILogger]: With dead ends: 68 [2019-05-23 11:24:49,860 INFO L146 ILogger]: Without dead ends: 48 [2019-05-23 11:24:49,863 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 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 11:24:49,864 INFO L146 ILogger]: Start minimizeSevpa. Operand 48 states. [2019-05-23 11:24:49,870 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 48 to 34. [2019-05-23 11:24:49,871 INFO L146 ILogger]: Start removeUnreachable. Operand 34 states. [2019-05-23 11:24:49,872 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-05-23 11:24:49,872 INFO L146 ILogger]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 21 [2019-05-23 11:24:49,873 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:49,873 INFO L146 ILogger]: Abstraction has 34 states and 36 transitions. [2019-05-23 11:24:49,873 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:24:49,873 INFO L146 ILogger]: Start isEmpty. Operand 34 states and 36 transitions. [2019-05-23 11:24:49,874 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:24:49,874 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:49,874 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 11:24:49,875 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:49,876 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:49,876 INFO L146 ILogger]: Analyzing trace with hash 1195011055, now seen corresponding path program 1 times [2019-05-23 11:24:49,876 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:49,877 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:49,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:49,878 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:49,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:49,914 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:50,221 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:24:50,221 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:50,222 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:50,236 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:50,260 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:50,261 INFO L146 ILogger]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:24:50,268 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:50,416 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:24:50,438 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:50,438 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:24:50,439 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:24:50,439 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:24:50,440 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:24:50,440 INFO L146 ILogger]: Start difference. First operand 34 states and 36 transitions. Second operand 9 states. [2019-05-23 11:24:50,829 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:50,830 INFO L146 ILogger]: Finished difference Result 74 states and 80 transitions. [2019-05-23 11:24:50,831 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:24:50,831 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 27 [2019-05-23 11:24:50,832 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:50,834 INFO L146 ILogger]: With dead ends: 74 [2019-05-23 11:24:50,834 INFO L146 ILogger]: Without dead ends: 54 [2019-05-23 11:24:50,835 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:24:50,836 INFO L146 ILogger]: Start minimizeSevpa. Operand 54 states. [2019-05-23 11:24:50,840 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 54 to 40. [2019-05-23 11:24:50,841 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:24:50,842 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-05-23 11:24:50,842 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 27 [2019-05-23 11:24:50,842 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:50,842 INFO L146 ILogger]: Abstraction has 40 states and 42 transitions. [2019-05-23 11:24:50,843 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:24:50,843 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 42 transitions. [2019-05-23 11:24:50,844 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 34 [2019-05-23 11:24:50,844 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:50,844 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:24:50,845 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:50,845 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:50,845 INFO L146 ILogger]: Analyzing trace with hash 36604902, now seen corresponding path program 2 times [2019-05-23 11:24:50,845 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:50,845 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:50,846 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:50,847 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:50,847 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:50,875 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:51,383 WARN L146 ILogger]: Spent 208.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2019-05-23 11:24:51,542 INFO L146 ILogger]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:24:51,542 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:51,543 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:51,559 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:51,574 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:51,574 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:51,575 INFO L146 ILogger]: Trace formula consists of 58 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:24:51,579 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:51,787 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-05-23 11:24:51,788 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:51,800 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:51,801 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:51,801 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2019-05-23 11:24:52,039 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:52,039 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 46 [2019-05-23 11:24:52,040 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:52,068 INFO L146 ILogger]: treesize reduction 24, result has 51.0 percent of original size [2019-05-23 11:24:52,069 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:52,069 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2019-05-23 11:24:59,923 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:59,924 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:59,925 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 24 treesize of output 10 [2019-05-23 11:24:59,925 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:59,931 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:59,932 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:59,932 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:3 [2019-05-23 11:24:59,991 INFO L146 ILogger]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:00,010 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:00,011 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 21 [2019-05-23 11:25:00,011 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:25:00,011 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:25:00,013 INFO L146 ILogger]: CoverageRelationStatistics Valid=90, Invalid=327, Unknown=3, NotChecked=0, Total=420 [2019-05-23 11:25:00,013 INFO L146 ILogger]: Start difference. First operand 40 states and 42 transitions. Second operand 21 states. [2019-05-23 11:25:13,376 WARN L146 ILogger]: Spent 4.41 s on a formula simplification that was a NOOP. DAG size: 31 [2019-05-23 11:25:24,869 WARN L146 ILogger]: Spent 2.47 s on a formula simplification that was a NOOP. DAG size: 22 [2019-05-23 11:25:56,894 WARN L146 ILogger]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 26