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/reducercommutativity/sum60_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:24:36,150 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:24:36,153 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:24:36,170 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:24:36,170 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:24:36,172 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:24:36,175 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:24:36,177 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:24:36,179 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:24:36,180 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:24:36,188 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:24:36,188 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:24:36,189 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:24:36,192 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:24:36,193 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:24:36,194 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:24:36,195 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:24:36,200 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:24:36,202 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:24:36,207 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:24:36,208 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:24:36,210 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:24:36,212 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:24:36,213 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:24:36,213 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:24:36,214 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:24:36,215 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:24:36,216 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:24:36,216 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:24:36,217 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:24:36,218 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:24:36,219 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:24:36,222 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:24:36,222 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:24:36,223 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:24:36,223 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:24:36,223 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:24:36,224 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:24:36,226 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:24:36,227 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:24:36,255 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:24:36,255 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:24:36,259 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:24:36,259 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:24:36,259 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:24:36,260 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:24:36,260 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:24:36,260 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:24:36,260 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:24:36,261 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:24:36,261 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:24:36,261 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:24:36,261 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:24:36,262 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:24:36,263 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:24:36,263 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:24:36,264 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:24:36,264 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:24:36,264 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:24:36,264 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:24:36,264 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:24:36,265 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:24:36,265 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:24:36,266 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:24:36,266 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:24:36,266 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:24:36,266 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:24:36,266 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:24:36,267 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 11:24:36,323 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:24:36,336 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:24:36,342 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:24:36,344 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:24:36,344 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:24:36,345 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/sum60_true-unreach-call.i [2019-05-23 11:24:36,408 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bdd2aee6/4c6b6e741cac48078169af67e2fdb649/FLAG9026cfed9 [2019-05-23 11:24:36,822 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:24:36,822 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/sum60_true-unreach-call.i [2019-05-23 11:24:36,828 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bdd2aee6/4c6b6e741cac48078169af67e2fdb649/FLAG9026cfed9 [2019-05-23 11:24:37,193 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bdd2aee6/4c6b6e741cac48078169af67e2fdb649 [2019-05-23 11:24:37,206 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:24:37,208 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:24:37,209 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:37,210 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:24:37,215 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:24:37,216 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,219 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e0cef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37, skipping insertion in model container [2019-05-23 11:24:37,219 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,227 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:24:37,247 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:24:37,401 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:37,410 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:24:37,435 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:37,454 INFO L146 ILogger]: Completed translation [2019-05-23 11:24:37,455 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37 WrapperNode [2019-05-23 11:24:37,455 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:37,457 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:37,457 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:24:37,457 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:24:37,467 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,477 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,511 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:37,511 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:24:37,511 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:24:37,512 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:24:37,521 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,521 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,524 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,524 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,630 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,645 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,650 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (1/1) ... [2019-05-23 11:24:37,656 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:24:37,656 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:24:37,656 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:24:37,656 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:24:37,657 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (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 11:24:37,702 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:24:37,703 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:24:37,703 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:24:37,703 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:24:37,703 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:24:37,703 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:24:38,255 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:24:38,255 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:24:38,256 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:38 BoogieIcfgContainer [2019-05-23 11:24:38,256 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:24:38,257 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:24:38,257 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:24:38,264 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:24:38,264 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:24:37" (1/3) ... [2019-05-23 11:24:38,265 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a47d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:38, skipping insertion in model container [2019-05-23 11:24:38,265 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:37" (2/3) ... [2019-05-23 11:24:38,265 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a47d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:38, skipping insertion in model container [2019-05-23 11:24:38,266 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:38" (3/3) ... [2019-05-23 11:24:38,267 INFO L146 ILogger]: Analyzing ICFG sum60_true-unreach-call.i [2019-05-23 11:24:38,275 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:24:38,283 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:24:38,300 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:24:38,330 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:24:38,330 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:24:38,331 INFO L146 ILogger]: Hoare is true [2019-05-23 11:24:38,331 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:24:38,331 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:24:38,331 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:24:38,331 INFO L146 ILogger]: Difference is false [2019-05-23 11:24:38,332 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:24:38,332 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:24:38,349 INFO L146 ILogger]: Start isEmpty. Operand 105 states. [2019-05-23 11:24:38,358 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:24:38,358 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:38,359 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:38,361 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:38,366 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:38,366 INFO L146 ILogger]: Analyzing trace with hash -503519154, now seen corresponding path program 1 times [2019-05-23 11:24:38,367 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:38,368 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:38,404 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:38,405 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:38,405 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:38,449 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:38,569 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 11:24:38,571 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:38,572 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:24:38,576 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:24:38,590 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:24:38,591 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:24:38,593 INFO L146 ILogger]: Start difference. First operand 105 states. Second operand 3 states. [2019-05-23 11:24:38,687 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:38,687 INFO L146 ILogger]: Finished difference Result 199 states and 219 transitions. [2019-05-23 11:24:38,688 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:24:38,689 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 68 [2019-05-23 11:24:38,690 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:38,702 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:24:38,702 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:24:38,706 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:24:38,725 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:24:38,747 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-05-23 11:24:38,749 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:24:38,751 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2019-05-23 11:24:38,753 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 68 [2019-05-23 11:24:38,754 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:38,754 INFO L146 ILogger]: Abstraction has 100 states and 104 transitions. [2019-05-23 11:24:38,754 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:24:38,754 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 104 transitions. [2019-05-23 11:24:38,757 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:24:38,757 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:38,758 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:38,758 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:38,758 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:38,759 INFO L146 ILogger]: Analyzing trace with hash -1483383517, now seen corresponding path program 1 times [2019-05-23 11:24:38,759 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:38,759 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:38,760 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:38,761 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:38,761 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:38,785 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:38,964 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 11:24:38,965 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:38,965 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 11:24:38,985 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:39,049 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:39,051 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:39,060 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:39,107 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:24:39,137 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:39,137 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:39,139 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:39,139 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:39,140 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:39,140 INFO L146 ILogger]: Start difference. First operand 100 states and 104 transitions. Second operand 6 states. [2019-05-23 11:24:39,611 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:39,612 INFO L146 ILogger]: Finished difference Result 212 states and 223 transitions. [2019-05-23 11:24:39,613 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:39,613 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 75 [2019-05-23 11:24:39,614 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:39,615 INFO L146 ILogger]: With dead ends: 212 [2019-05-23 11:24:39,616 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:24:39,617 INFO L146 ILogger]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:24:39,618 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:24:39,626 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 110. [2019-05-23 11:24:39,626 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:24:39,629 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2019-05-23 11:24:39,630 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 75 [2019-05-23 11:24:39,630 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:39,630 INFO L146 ILogger]: Abstraction has 110 states and 114 transitions. [2019-05-23 11:24:39,630 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:39,630 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 114 transitions. [2019-05-23 11:24:39,634 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:24:39,635 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:39,635 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:39,636 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:39,636 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:39,636 INFO L146 ILogger]: Analyzing trace with hash -483601032, now seen corresponding path program 1 times [2019-05-23 11:24:39,637 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:39,637 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:39,639 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:39,639 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:39,640 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:39,683 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:39,774 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:24:39,774 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:39,774 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 11:24:39,791 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:39,843 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:39,844 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:39,848 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:39,887 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:24:39,907 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:39,907 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:39,908 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:39,908 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:39,908 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:39,909 INFO L146 ILogger]: Start difference. First operand 110 states and 114 transitions. Second operand 6 states. [2019-05-23 11:24:40,422 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:40,423 INFO L146 ILogger]: Finished difference Result 221 states and 231 transitions. [2019-05-23 11:24:40,426 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:40,426 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 103 [2019-05-23 11:24:40,427 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:40,428 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:24:40,428 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:24:40,429 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:24:40,430 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:24:40,442 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 132. [2019-05-23 11:24:40,442 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:24:40,443 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2019-05-23 11:24:40,444 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 103 [2019-05-23 11:24:40,444 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:40,444 INFO L146 ILogger]: Abstraction has 132 states and 136 transitions. [2019-05-23 11:24:40,444 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:40,444 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 136 transitions. [2019-05-23 11:24:40,449 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:24:40,449 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:40,449 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:40,450 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:40,450 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:40,450 INFO L146 ILogger]: Analyzing trace with hash 46998236, now seen corresponding path program 1 times [2019-05-23 11:24:40,450 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:40,450 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:40,451 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:40,451 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:40,452 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:40,492 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:40,624 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:40,624 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:40,624 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:40,637 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:40,696 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:40,697 INFO L146 ILogger]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:40,702 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:40,853 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:24:40,872 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:40,872 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:24:40,873 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:24:40,873 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:24:40,874 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:24:40,874 INFO L146 ILogger]: Start difference. First operand 132 states and 136 transitions. Second operand 10 states. [2019-05-23 11:24:41,422 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:41,422 INFO L146 ILogger]: Finished difference Result 263 states and 272 transitions. [2019-05-23 11:24:41,423 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:24:41,423 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 131 [2019-05-23 11:24:41,423 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:41,424 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:24:41,424 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:24:41,426 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:41,426 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:24:41,441 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 146. [2019-05-23 11:24:41,442 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:24:41,444 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2019-05-23 11:24:41,444 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 131 [2019-05-23 11:24:41,445 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:41,445 INFO L146 ILogger]: Abstraction has 146 states and 150 transitions. [2019-05-23 11:24:41,445 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:24:41,445 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 150 transitions. [2019-05-23 11:24:41,447 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:24:41,447 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:41,448 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:41,448 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:41,448 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:41,449 INFO L146 ILogger]: Analyzing trace with hash -1200733213, now seen corresponding path program 2 times [2019-05-23 11:24:41,449 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:41,449 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:41,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:41,450 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:41,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:41,486 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:41,666 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:41,666 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:41,666 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:41,675 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:41,743 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:41,743 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:41,745 INFO L146 ILogger]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:41,750 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:42,069 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:42,100 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:42,100 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:24:42,101 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:24:42,101 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:24:42,102 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:24:42,102 INFO L146 ILogger]: Start difference. First operand 146 states and 150 transitions. Second operand 11 states. [2019-05-23 11:24:42,426 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:42,426 INFO L146 ILogger]: Finished difference Result 272 states and 280 transitions. [2019-05-23 11:24:42,427 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:24:42,427 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 145 [2019-05-23 11:24:42,427 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:42,428 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:24:42,428 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:24:42,432 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:24:42,432 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:24:42,448 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 153. [2019-05-23 11:24:42,448 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:24:42,452 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2019-05-23 11:24:42,453 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 145 [2019-05-23 11:24:42,453 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:42,453 INFO L146 ILogger]: Abstraction has 153 states and 157 transitions. [2019-05-23 11:24:42,453 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:24:42,453 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 157 transitions. [2019-05-23 11:24:42,459 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:24:42,459 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:42,459 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:42,460 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:42,461 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:42,461 INFO L146 ILogger]: Analyzing trace with hash 104748121, now seen corresponding path program 3 times [2019-05-23 11:24:42,462 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:42,462 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:42,463 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:42,463 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:42,463 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:42,525 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:42,677 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:42,677 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:42,677 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:42,686 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:42,749 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:24:42,749 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:42,751 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:42,755 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:42,872 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:24:42,891 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:42,891 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:24:42,891 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:24:42,893 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:24:42,893 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:42,893 INFO L146 ILogger]: Start difference. First operand 153 states and 157 transitions. Second operand 16 states. [2019-05-23 11:24:43,419 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:43,419 INFO L146 ILogger]: Finished difference Result 315 states and 326 transitions. [2019-05-23 11:24:43,420 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:24:43,420 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 152 [2019-05-23 11:24:43,421 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:43,423 INFO L146 ILogger]: With dead ends: 315 [2019-05-23 11:24:43,423 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:24:43,424 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:24:43,424 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:24:43,431 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 181. [2019-05-23 11:24:43,431 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:24:43,432 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2019-05-23 11:24:43,432 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 152 [2019-05-23 11:24:43,432 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:43,432 INFO L146 ILogger]: Abstraction has 181 states and 185 transitions. [2019-05-23 11:24:43,433 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:24:43,433 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 185 transitions. [2019-05-23 11:24:43,435 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:24:43,435 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:43,435 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:43,436 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:43,436 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:43,436 INFO L146 ILogger]: Analyzing trace with hash -9292050, now seen corresponding path program 4 times [2019-05-23 11:24:43,436 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:43,437 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:43,437 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:43,437 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:43,438 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:43,465 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:43,694 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:24:43,694 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:43,694 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:43,705 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:43,771 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:43,771 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:43,773 INFO L146 ILogger]: Trace formula consists of 292 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:43,775 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:43,834 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:24:43,852 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:43,852 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:24:43,853 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:24:43,853 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:24:43,853 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:24:43,853 INFO L146 ILogger]: Start difference. First operand 181 states and 185 transitions. Second operand 15 states. [2019-05-23 11:24:44,069 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:44,070 INFO L146 ILogger]: Finished difference Result 328 states and 336 transitions. [2019-05-23 11:24:44,078 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:24:44,078 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 180 [2019-05-23 11:24:44,078 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:44,079 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:24:44,080 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:24:44,081 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:24:44,081 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:24:44,086 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-05-23 11:24:44,086 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:24:44,087 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2019-05-23 11:24:44,087 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 180 [2019-05-23 11:24:44,087 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:44,087 INFO L146 ILogger]: Abstraction has 188 states and 192 transitions. [2019-05-23 11:24:44,088 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:24:44,088 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 192 transitions. [2019-05-23 11:24:44,090 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 188 [2019-05-23 11:24:44,090 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:44,090 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:44,091 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:44,091 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:44,091 INFO L146 ILogger]: Analyzing trace with hash -397663560, now seen corresponding path program 5 times [2019-05-23 11:24:44,091 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:44,091 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:44,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:44,092 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:44,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:44,124 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:44,452 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:24:44,452 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:44,453 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:44,462 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:44,579 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:24:44,579 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:44,581 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:44,584 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:44,680 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-05-23 11:24:44,699 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:44,699 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:24:44,700 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:24:44,700 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:24:44,700 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:24:44,701 INFO L146 ILogger]: Start difference. First operand 188 states and 192 transitions. Second operand 22 states. [2019-05-23 11:24:45,617 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:45,618 INFO L146 ILogger]: Finished difference Result 371 states and 382 transitions. [2019-05-23 11:24:45,618 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:24:45,618 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 187 [2019-05-23 11:24:45,619 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:45,621 INFO L146 ILogger]: With dead ends: 371 [2019-05-23 11:24:45,621 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:24:45,638 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:24:45,638 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:24:45,643 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 216. [2019-05-23 11:24:45,643 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:24:45,644 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2019-05-23 11:24:45,644 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 187 [2019-05-23 11:24:45,644 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:45,644 INFO L146 ILogger]: Abstraction has 216 states and 220 transitions. [2019-05-23 11:24:45,645 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:24:45,645 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 220 transitions. [2019-05-23 11:24:45,647 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:24:45,647 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:45,648 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:45,648 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:45,648 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:45,648 INFO L146 ILogger]: Analyzing trace with hash 1152254147, now seen corresponding path program 6 times [2019-05-23 11:24:45,649 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:45,649 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:45,650 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:45,650 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:45,650 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:45,675 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:45,883 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-05-23 11:24:45,884 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:45,884 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:45,893 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:45,976 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:24:45,976 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:45,977 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:45,980 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:46,181 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2019-05-23 11:24:46,201 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:46,202 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:24:46,202 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:24:46,203 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:24:46,203 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:24:46,203 INFO L146 ILogger]: Start difference. First operand 216 states and 220 transitions. Second operand 22 states. [2019-05-23 11:24:46,905 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:46,905 INFO L146 ILogger]: Finished difference Result 396 states and 405 transitions. [2019-05-23 11:24:46,907 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:24:46,907 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:24:46,908 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:46,909 INFO L146 ILogger]: With dead ends: 396 [2019-05-23 11:24:46,909 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:24:46,910 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:24:46,911 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:24:46,916 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 230. [2019-05-23 11:24:46,916 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:24:46,917 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2019-05-23 11:24:46,917 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 215 [2019-05-23 11:24:46,918 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:46,918 INFO L146 ILogger]: Abstraction has 230 states and 234 transitions. [2019-05-23 11:24:46,918 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:24:46,918 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 234 transitions. [2019-05-23 11:24:46,921 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:24:46,921 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:46,921 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:46,921 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:46,922 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:46,922 INFO L146 ILogger]: Analyzing trace with hash 1030812380, now seen corresponding path program 7 times [2019-05-23 11:24:46,922 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:46,922 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:46,923 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:46,923 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:46,923 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:46,950 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:47,170 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:47,170 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:47,170 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:47,180 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:47,233 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:47,234 INFO L146 ILogger]: Trace formula consists of 365 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:47,237 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:47,326 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:47,363 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:47,363 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:47,364 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:47,364 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:47,365 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:47,365 INFO L146 ILogger]: Start difference. First operand 230 states and 234 transitions. Second operand 21 states. [2019-05-23 11:24:47,988 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:47,988 INFO L146 ILogger]: Finished difference Result 405 states and 413 transitions. [2019-05-23 11:24:47,989 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:47,989 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 229 [2019-05-23 11:24:47,989 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:47,991 INFO L146 ILogger]: With dead ends: 405 [2019-05-23 11:24:47,991 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:24:47,992 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:24:47,992 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:24:47,997 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 237. [2019-05-23 11:24:47,997 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:24:47,998 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2019-05-23 11:24:47,998 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 229 [2019-05-23 11:24:47,999 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:47,999 INFO L146 ILogger]: Abstraction has 237 states and 241 transitions. [2019-05-23 11:24:47,999 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:47,999 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 241 transitions. [2019-05-23 11:24:48,001 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 237 [2019-05-23 11:24:48,001 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:48,002 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:48,002 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:48,002 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:48,002 INFO L146 ILogger]: Analyzing trace with hash -1860993966, now seen corresponding path program 8 times [2019-05-23 11:24:48,002 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:48,003 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:48,003 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:48,004 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:48,004 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:48,027 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:48,309 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:48,310 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:48,310 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:48,318 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:48,389 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:48,389 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:48,391 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:24:48,393 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:48,528 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:48,553 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:48,553 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:24:48,554 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:24:48,554 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:24:48,555 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:24:48,555 INFO L146 ILogger]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2019-05-23 11:24:48,898 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:48,899 INFO L146 ILogger]: Finished difference Result 412 states and 420 transitions. [2019-05-23 11:24:48,905 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:24:48,906 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 236 [2019-05-23 11:24:48,906 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:48,907 INFO L146 ILogger]: With dead ends: 412 [2019-05-23 11:24:48,907 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:24:48,909 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:48,909 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:24:48,913 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 244. [2019-05-23 11:24:48,913 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:24:48,914 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2019-05-23 11:24:48,915 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 236 [2019-05-23 11:24:48,915 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:48,915 INFO L146 ILogger]: Abstraction has 244 states and 248 transitions. [2019-05-23 11:24:48,915 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:24:48,915 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 248 transitions. [2019-05-23 11:24:48,916 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 244 [2019-05-23 11:24:48,917 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:48,917 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:48,917 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:48,917 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:48,917 INFO L146 ILogger]: Analyzing trace with hash -1509981668, now seen corresponding path program 9 times [2019-05-23 11:24:48,918 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:48,918 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:48,918 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:48,918 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:48,919 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:48,943 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:49,365 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:49,365 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:49,365 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:49,374 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:49,467 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:24:49,467 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:49,469 INFO L146 ILogger]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:49,472 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:49,633 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-05-23 11:24:49,653 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:49,653 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-05-23 11:24:49,654 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:24:49,654 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:24:49,655 INFO L146 ILogger]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:24:49,655 INFO L146 ILogger]: Start difference. First operand 244 states and 248 transitions. Second operand 30 states. [2019-05-23 11:24:51,201 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:51,202 INFO L146 ILogger]: Finished difference Result 431 states and 440 transitions. [2019-05-23 11:24:51,203 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:24:51,203 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 243 [2019-05-23 11:24:51,203 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:51,204 INFO L146 ILogger]: With dead ends: 431 [2019-05-23 11:24:51,204 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:24:51,206 INFO L146 ILogger]: 0 DeclaredPredicates, 291 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:24:51,207 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:24:51,211 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 258. [2019-05-23 11:24:51,212 INFO L146 ILogger]: Start removeUnreachable. Operand 258 states. [2019-05-23 11:24:51,212 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 258 states to 258 states and 262 transitions. [2019-05-23 11:24:51,213 INFO L146 ILogger]: Start accepts. Automaton has 258 states and 262 transitions. Word has length 243 [2019-05-23 11:24:51,213 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:51,213 INFO L146 ILogger]: Abstraction has 258 states and 262 transitions. [2019-05-23 11:24:51,213 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:24:51,213 INFO L146 ILogger]: Start isEmpty. Operand 258 states and 262 transitions. [2019-05-23 11:24:51,215 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 258 [2019-05-23 11:24:51,215 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:51,215 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:51,215 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:51,216 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:51,216 INFO L146 ILogger]: Analyzing trace with hash -64980893, now seen corresponding path program 10 times [2019-05-23 11:24:51,216 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:51,216 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:51,217 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:51,217 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:51,217 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:51,242 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:52,191 INFO L146 ILogger]: Checked inductivity of 580 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:24:52,191 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:52,191 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:52,200 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:52,284 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:52,285 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:52,287 INFO L146 ILogger]: Trace formula consists of 405 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:24:52,289 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:52,364 INFO L146 ILogger]: Checked inductivity of 580 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:24:52,383 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:52,383 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:24:52,384 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:24:52,384 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:24:52,384 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:24:52,385 INFO L146 ILogger]: Start difference. First operand 258 states and 262 transitions. Second operand 27 states. [2019-05-23 11:24:53,126 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:53,126 INFO L146 ILogger]: Finished difference Result 440 states and 448 transitions. [2019-05-23 11:24:53,128 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:24:53,129 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 257 [2019-05-23 11:24:53,129 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:53,130 INFO L146 ILogger]: With dead ends: 440 [2019-05-23 11:24:53,130 INFO L146 ILogger]: Without dead ends: 270 [2019-05-23 11:24:53,131 INFO L146 ILogger]: 0 DeclaredPredicates, 303 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:24:53,131 INFO L146 ILogger]: Start minimizeSevpa. Operand 270 states. [2019-05-23 11:24:53,134 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 270 to 265. [2019-05-23 11:24:53,134 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:24:53,135 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 269 transitions. [2019-05-23 11:24:53,135 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 269 transitions. Word has length 257 [2019-05-23 11:24:53,136 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:53,136 INFO L146 ILogger]: Abstraction has 265 states and 269 transitions. [2019-05-23 11:24:53,136 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:24:53,136 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 269 transitions. [2019-05-23 11:24:53,137 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 265 [2019-05-23 11:24:53,137 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:53,138 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:53,138 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:53,138 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:53,138 INFO L146 ILogger]: Analyzing trace with hash 887018713, now seen corresponding path program 11 times [2019-05-23 11:24:53,139 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:53,139 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:53,139 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:53,140 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:53,140 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:53,166 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:53,577 INFO L146 ILogger]: Checked inductivity of 658 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:24:53,578 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:53,578 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:53,588 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:53,949 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:24:53,949 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:53,951 INFO L146 ILogger]: Trace formula consists of 415 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:53,955 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:54,155 INFO L146 ILogger]: Checked inductivity of 658 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2019-05-23 11:24:54,174 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:54,174 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2019-05-23 11:24:54,175 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:24:54,175 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:24:54,176 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:24:54,176 INFO L146 ILogger]: Start difference. First operand 265 states and 269 transitions. Second operand 36 states. [2019-05-23 11:24:55,696 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:55,697 INFO L146 ILogger]: Finished difference Result 483 states and 494 transitions. [2019-05-23 11:24:55,697 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:24:55,697 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 264 [2019-05-23 11:24:55,698 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:55,700 INFO L146 ILogger]: With dead ends: 483 [2019-05-23 11:24:55,700 INFO L146 ILogger]: Without dead ends: 313 [2019-05-23 11:24:55,702 INFO L146 ILogger]: 0 DeclaredPredicates, 322 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:24:55,703 INFO L146 ILogger]: Start minimizeSevpa. Operand 313 states. [2019-05-23 11:24:55,708 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 313 to 293. [2019-05-23 11:24:55,708 INFO L146 ILogger]: Start removeUnreachable. Operand 293 states. [2019-05-23 11:24:55,709 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2019-05-23 11:24:55,709 INFO L146 ILogger]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 264 [2019-05-23 11:24:55,709 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:55,709 INFO L146 ILogger]: Abstraction has 293 states and 297 transitions. [2019-05-23 11:24:55,709 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:24:55,710 INFO L146 ILogger]: Start isEmpty. Operand 293 states and 297 transitions. [2019-05-23 11:24:55,711 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 293 [2019-05-23 11:24:55,711 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:55,711 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:55,712 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:55,712 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:55,712 INFO L146 ILogger]: Analyzing trace with hash -499990866, now seen corresponding path program 12 times [2019-05-23 11:24:55,712 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:55,712 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:55,713 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:55,713 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:55,713 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:55,739 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:56,549 INFO L146 ILogger]: Checked inductivity of 830 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-05-23 11:24:56,550 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:56,550 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:56,560 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:56,845 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:24:56,845 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:56,848 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:56,851 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:57,121 INFO L146 ILogger]: Checked inductivity of 830 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2019-05-23 11:24:57,140 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:57,140 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 38 [2019-05-23 11:24:57,141 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:24:57,141 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:24:57,142 INFO L146 ILogger]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:24:57,142 INFO L146 ILogger]: Start difference. First operand 293 states and 297 transitions. Second operand 38 states. [2019-05-23 11:24:58,154 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:58,154 INFO L146 ILogger]: Finished difference Result 508 states and 517 transitions. [2019-05-23 11:24:58,155 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:24:58,155 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 292 [2019-05-23 11:24:58,155 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:58,157 INFO L146 ILogger]: With dead ends: 508 [2019-05-23 11:24:58,157 INFO L146 ILogger]: Without dead ends: 317 [2019-05-23 11:24:58,159 INFO L146 ILogger]: 0 DeclaredPredicates, 354 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1100, Invalid=4012, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:24:58,160 INFO L146 ILogger]: Start minimizeSevpa. Operand 317 states. [2019-05-23 11:24:58,164 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 317 to 307. [2019-05-23 11:24:58,164 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:24:58,165 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 311 transitions. [2019-05-23 11:24:58,165 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 311 transitions. Word has length 292 [2019-05-23 11:24:58,165 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:58,166 INFO L146 ILogger]: Abstraction has 307 states and 311 transitions. [2019-05-23 11:24:58,166 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:24:58,166 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 311 transitions. [2019-05-23 11:24:58,167 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 307 [2019-05-23 11:24:58,167 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:58,167 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:58,167 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:58,168 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:58,168 INFO L146 ILogger]: Analyzing trace with hash 687477199, now seen corresponding path program 13 times [2019-05-23 11:24:58,168 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:58,168 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:58,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:58,169 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:58,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:58,195 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:58,649 INFO L146 ILogger]: Checked inductivity of 951 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:24:58,649 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:58,649 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:58,659 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:58,726 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:58,728 INFO L146 ILogger]: Trace formula consists of 478 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:24:58,732 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:59,367 INFO L146 ILogger]: Checked inductivity of 951 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:24:59,419 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:59,420 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:24:59,421 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:24:59,421 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:24:59,422 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:24:59,422 INFO L146 ILogger]: Start difference. First operand 307 states and 311 transitions. Second operand 33 states. [2019-05-23 11:25:00,366 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:00,366 INFO L146 ILogger]: Finished difference Result 517 states and 525 transitions. [2019-05-23 11:25:00,367 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:25:00,367 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 306 [2019-05-23 11:25:00,368 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:00,369 INFO L146 ILogger]: With dead ends: 517 [2019-05-23 11:25:00,369 INFO L146 ILogger]: Without dead ends: 319 [2019-05-23 11:25:00,373 INFO L146 ILogger]: 0 DeclaredPredicates, 364 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:25:00,373 INFO L146 ILogger]: Start minimizeSevpa. Operand 319 states. [2019-05-23 11:25:00,378 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 319 to 314. [2019-05-23 11:25:00,378 INFO L146 ILogger]: Start removeUnreachable. Operand 314 states. [2019-05-23 11:25:00,379 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 314 states to 314 states and 318 transitions. [2019-05-23 11:25:00,379 INFO L146 ILogger]: Start accepts. Automaton has 314 states and 318 transitions. Word has length 306 [2019-05-23 11:25:00,379 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:00,379 INFO L146 ILogger]: Abstraction has 314 states and 318 transitions. [2019-05-23 11:25:00,379 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:25:00,379 INFO L146 ILogger]: Start isEmpty. Operand 314 states and 318 transitions. [2019-05-23 11:25:00,381 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 314 [2019-05-23 11:25:00,381 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:00,382 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:00,382 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:00,382 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:00,383 INFO L146 ILogger]: Analyzing trace with hash -1746810855, now seen corresponding path program 14 times [2019-05-23 11:25:00,383 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:00,383 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:00,384 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:00,384 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:00,384 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:00,409 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:02,295 INFO L146 ILogger]: Checked inductivity of 1050 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:25:02,296 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:02,296 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:02,304 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:02,376 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:02,376 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:02,378 INFO L146 ILogger]: Trace formula consists of 488 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:25:02,382 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:02,521 INFO L146 ILogger]: Checked inductivity of 1050 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:25:02,541 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:02,541 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:25:02,542 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:25:02,542 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:25:02,543 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:25:02,543 INFO L146 ILogger]: Start difference. First operand 314 states and 318 transitions. Second operand 35 states. [2019-05-23 11:25:03,255 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:03,255 INFO L146 ILogger]: Finished difference Result 524 states and 532 transitions. [2019-05-23 11:25:03,255 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:25:03,255 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 313 [2019-05-23 11:25:03,256 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:03,257 INFO L146 ILogger]: With dead ends: 524 [2019-05-23 11:25:03,257 INFO L146 ILogger]: Without dead ends: 326 [2019-05-23 11:25:03,259 INFO L146 ILogger]: 0 DeclaredPredicates, 375 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:25:03,259 INFO L146 ILogger]: Start minimizeSevpa. Operand 326 states. [2019-05-23 11:25:03,263 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 326 to 321. [2019-05-23 11:25:03,264 INFO L146 ILogger]: Start removeUnreachable. Operand 321 states. [2019-05-23 11:25:03,264 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 321 states to 321 states and 325 transitions. [2019-05-23 11:25:03,264 INFO L146 ILogger]: Start accepts. Automaton has 321 states and 325 transitions. Word has length 313 [2019-05-23 11:25:03,265 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:03,265 INFO L146 ILogger]: Abstraction has 321 states and 325 transitions. [2019-05-23 11:25:03,265 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:25:03,265 INFO L146 ILogger]: Start isEmpty. Operand 321 states and 325 transitions. [2019-05-23 11:25:03,267 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 321 [2019-05-23 11:25:03,267 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:03,267 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:03,268 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:03,268 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:03,268 INFO L146 ILogger]: Analyzing trace with hash 68700815, now seen corresponding path program 15 times [2019-05-23 11:25:03,268 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:03,268 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:03,269 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:03,269 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:03,269 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:03,296 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:03,903 INFO L146 ILogger]: Checked inductivity of 1156 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:25:03,903 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:03,903 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:03,912 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:04,076 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:25:04,077 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:04,079 INFO L146 ILogger]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:25:04,082 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:04,345 INFO L146 ILogger]: Checked inductivity of 1156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2019-05-23 11:25:04,365 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:04,365 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:25:04,366 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:25:04,366 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:25:04,367 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:25:04,367 INFO L146 ILogger]: Start difference. First operand 321 states and 325 transitions. Second operand 46 states. [2019-05-23 11:25:05,767 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:05,768 INFO L146 ILogger]: Finished difference Result 567 states and 578 transitions. [2019-05-23 11:25:05,768 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:25:05,768 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 320 [2019-05-23 11:25:05,769 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:05,771 INFO L146 ILogger]: With dead ends: 567 [2019-05-23 11:25:05,771 INFO L146 ILogger]: Without dead ends: 369 [2019-05-23 11:25:05,774 INFO L146 ILogger]: 0 DeclaredPredicates, 396 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:25:05,775 INFO L146 ILogger]: Start minimizeSevpa. Operand 369 states. [2019-05-23 11:25:05,780 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 369 to 349. [2019-05-23 11:25:05,780 INFO L146 ILogger]: Start removeUnreachable. Operand 349 states. [2019-05-23 11:25:05,781 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2019-05-23 11:25:05,781 INFO L146 ILogger]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 320 [2019-05-23 11:25:05,781 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:05,781 INFO L146 ILogger]: Abstraction has 349 states and 353 transitions. [2019-05-23 11:25:05,781 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:25:05,782 INFO L146 ILogger]: Start isEmpty. Operand 349 states and 353 transitions. [2019-05-23 11:25:05,783 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 349 [2019-05-23 11:25:05,783 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:05,784 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:05,784 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:05,784 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:05,785 INFO L146 ILogger]: Analyzing trace with hash 31541138, now seen corresponding path program 16 times [2019-05-23 11:25:05,785 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:05,785 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:05,785 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:05,786 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:05,786 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:05,813 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:06,700 INFO L146 ILogger]: Checked inductivity of 1377 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:25:06,701 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:06,701 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:06,710 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:25:06,969 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:25:06,970 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:06,972 INFO L146 ILogger]: Trace formula consists of 541 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:25:06,975 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:07,155 INFO L146 ILogger]: Checked inductivity of 1377 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:25:07,175 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:07,175 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:25:07,176 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:25:07,176 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:25:07,177 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:25:07,177 INFO L146 ILogger]: Start difference. First operand 349 states and 353 transitions. Second operand 39 states. [2019-05-23 11:25:08,108 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:08,108 INFO L146 ILogger]: Finished difference Result 580 states and 588 transitions. [2019-05-23 11:25:08,108 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:25:08,108 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 348 [2019-05-23 11:25:08,109 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:08,110 INFO L146 ILogger]: With dead ends: 580 [2019-05-23 11:25:08,110 INFO L146 ILogger]: Without dead ends: 361 [2019-05-23 11:25:08,111 INFO L146 ILogger]: 0 DeclaredPredicates, 418 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:25:08,112 INFO L146 ILogger]: Start minimizeSevpa. Operand 361 states. [2019-05-23 11:25:08,115 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 361 to 356. [2019-05-23 11:25:08,115 INFO L146 ILogger]: Start removeUnreachable. Operand 356 states. [2019-05-23 11:25:08,116 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 356 states to 356 states and 360 transitions. [2019-05-23 11:25:08,116 INFO L146 ILogger]: Start accepts. Automaton has 356 states and 360 transitions. Word has length 348 [2019-05-23 11:25:08,116 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:08,116 INFO L146 ILogger]: Abstraction has 356 states and 360 transitions. [2019-05-23 11:25:08,116 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:25:08,117 INFO L146 ILogger]: Start isEmpty. Operand 356 states and 360 transitions. [2019-05-23 11:25:08,118 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 356 [2019-05-23 11:25:08,118 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:08,119 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:08,119 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:08,119 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:08,119 INFO L146 ILogger]: Analyzing trace with hash -1448115876, now seen corresponding path program 17 times [2019-05-23 11:25:08,119 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:08,119 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:08,120 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:08,120 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:08,120 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:08,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:08,725 INFO L146 ILogger]: Checked inductivity of 1497 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:25:08,726 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:08,726 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:08,739 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:25:09,317 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:25:09,317 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:09,320 INFO L146 ILogger]: Trace formula consists of 551 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:25:09,326 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:09,459 INFO L146 ILogger]: Checked inductivity of 1497 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:25:09,479 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:09,480 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:25:09,480 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:25:09,480 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:25:09,481 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:25:09,481 INFO L146 ILogger]: Start difference. First operand 356 states and 360 transitions. Second operand 41 states. [2019-05-23 11:25:10,382 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:10,382 INFO L146 ILogger]: Finished difference Result 587 states and 595 transitions. [2019-05-23 11:25:10,383 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:25:10,383 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 355 [2019-05-23 11:25:10,383 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:10,384 INFO L146 ILogger]: With dead ends: 587 [2019-05-23 11:25:10,384 INFO L146 ILogger]: Without dead ends: 368 [2019-05-23 11:25:10,386 INFO L146 ILogger]: 0 DeclaredPredicates, 429 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:25:10,387 INFO L146 ILogger]: Start minimizeSevpa. Operand 368 states. [2019-05-23 11:25:10,391 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 368 to 363. [2019-05-23 11:25:10,391 INFO L146 ILogger]: Start removeUnreachable. Operand 363 states. [2019-05-23 11:25:10,392 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 363 states to 363 states and 367 transitions. [2019-05-23 11:25:10,392 INFO L146 ILogger]: Start accepts. Automaton has 363 states and 367 transitions. Word has length 355 [2019-05-23 11:25:10,392 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:10,393 INFO L146 ILogger]: Abstraction has 363 states and 367 transitions. [2019-05-23 11:25:10,393 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:25:10,393 INFO L146 ILogger]: Start isEmpty. Operand 363 states and 367 transitions. [2019-05-23 11:25:10,395 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 363 [2019-05-23 11:25:10,395 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:10,395 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:10,395 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:10,395 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:10,396 INFO L146 ILogger]: Analyzing trace with hash 1489801298, now seen corresponding path program 18 times [2019-05-23 11:25:10,396 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:10,396 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:10,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,397 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:10,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,423 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,138 INFO L146 ILogger]: Checked inductivity of 1624 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:25:11,138 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:11,138 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:11,150 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:25:11,612 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:25:11,612 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,615 INFO L146 ILogger]: Trace formula consists of 438 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:25:11,619 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:12,177 INFO L146 ILogger]: Checked inductivity of 1624 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2019-05-23 11:25:12,197 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:12,197 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 13] total 52 [2019-05-23 11:25:12,198 INFO L146 ILogger]: Interpolant automaton has 52 states [2019-05-23 11:25:12,198 INFO L146 ILogger]: Constructing interpolant automaton starting with 52 interpolants. [2019-05-23 11:25:12,199 INFO L146 ILogger]: CoverageRelationStatistics Valid=487, Invalid=2165, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:25:12,199 INFO L146 ILogger]: Start difference. First operand 363 states and 367 transitions. Second operand 52 states. [2019-05-23 11:25:13,918 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:13,918 INFO L146 ILogger]: Finished difference Result 606 states and 615 transitions. [2019-05-23 11:25:13,918 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-05-23 11:25:13,919 INFO L146 ILogger]: Start accepts. Automaton has 52 states. Word has length 362 [2019-05-23 11:25:13,919 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:13,920 INFO L146 ILogger]: With dead ends: 606 [2019-05-23 11:25:13,920 INFO L146 ILogger]: Without dead ends: 387 [2019-05-23 11:25:13,921 INFO L146 ILogger]: 0 DeclaredPredicates, 450 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2175, Invalid=7725, Unknown=0, NotChecked=0, Total=9900 [2019-05-23 11:25:13,922 INFO L146 ILogger]: Start minimizeSevpa. Operand 387 states. [2019-05-23 11:25:13,925 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 387 to 377. [2019-05-23 11:25:13,925 INFO L146 ILogger]: Start removeUnreachable. Operand 377 states. [2019-05-23 11:25:13,926 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 377 states to 377 states and 381 transitions. [2019-05-23 11:25:13,926 INFO L146 ILogger]: Start accepts. Automaton has 377 states and 381 transitions. Word has length 362 [2019-05-23 11:25:13,926 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:13,926 INFO L146 ILogger]: Abstraction has 377 states and 381 transitions. [2019-05-23 11:25:13,926 INFO L146 ILogger]: Interpolant automaton has 52 states. [2019-05-23 11:25:13,926 INFO L146 ILogger]: Start isEmpty. Operand 377 states and 381 transitions. [2019-05-23 11:25:13,928 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 377 [2019-05-23 11:25:13,929 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:13,929 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:13,929 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:13,929 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:13,930 INFO L146 ILogger]: Analyzing trace with hash -693820071, now seen corresponding path program 19 times [2019-05-23 11:25:13,930 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:13,930 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:13,931 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:13,931 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:13,931 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:13,960 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:15,721 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:25:15,721 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:15,721 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:15,730 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:15,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:15,818 INFO L146 ILogger]: Trace formula consists of 581 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:25:15,822 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:16,007 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:25:16,025 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:16,025 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:25:16,026 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:25:16,026 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:25:16,026 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:25:16,027 INFO L146 ILogger]: Start difference. First operand 377 states and 381 transitions. Second operand 45 states. [2019-05-23 11:25:17,010 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:17,010 INFO L146 ILogger]: Finished difference Result 615 states and 623 transitions. [2019-05-23 11:25:17,012 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:25:17,012 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 376 [2019-05-23 11:25:17,012 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:17,014 INFO L146 ILogger]: With dead ends: 615 [2019-05-23 11:25:17,014 INFO L146 ILogger]: Without dead ends: 389 [2019-05-23 11:25:17,015 INFO L146 ILogger]: 0 DeclaredPredicates, 458 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:25:17,016 INFO L146 ILogger]: Start minimizeSevpa. Operand 389 states. [2019-05-23 11:25:17,020 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 389 to 384. [2019-05-23 11:25:17,020 INFO L146 ILogger]: Start removeUnreachable. Operand 384 states. [2019-05-23 11:25:17,021 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 384 states to 384 states and 388 transitions. [2019-05-23 11:25:17,021 INFO L146 ILogger]: Start accepts. Automaton has 384 states and 388 transitions. Word has length 376 [2019-05-23 11:25:17,022 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:17,022 INFO L146 ILogger]: Abstraction has 384 states and 388 transitions. [2019-05-23 11:25:17,022 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:25:17,022 INFO L146 ILogger]: Start isEmpty. Operand 384 states and 388 transitions. [2019-05-23 11:25:17,024 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 384 [2019-05-23 11:25:17,024 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:17,025 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:17,025 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:17,025 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:17,025 INFO L146 ILogger]: Analyzing trace with hash 1079913507, now seen corresponding path program 20 times [2019-05-23 11:25:17,025 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:17,025 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:17,026 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:17,026 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:17,026 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:17,054 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:18,108 INFO L146 ILogger]: Checked inductivity of 1935 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:25:18,108 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:18,108 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:18,116 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:18,205 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:18,205 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:18,207 INFO L146 ILogger]: Trace formula consists of 591 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:25:18,211 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:18,426 INFO L146 ILogger]: Checked inductivity of 1935 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:25:18,458 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:18,458 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:25:18,459 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:25:18,459 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:25:18,460 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:25:18,460 INFO L146 ILogger]: Start difference. First operand 384 states and 388 transitions. Second operand 47 states. [2019-05-23 11:25:19,854 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:19,854 INFO L146 ILogger]: Finished difference Result 622 states and 630 transitions. [2019-05-23 11:25:19,855 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:25:19,855 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 383 [2019-05-23 11:25:19,856 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:19,858 INFO L146 ILogger]: With dead ends: 622 [2019-05-23 11:25:19,858 INFO L146 ILogger]: Without dead ends: 396 [2019-05-23 11:25:19,860 INFO L146 ILogger]: 0 DeclaredPredicates, 469 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:25:19,861 INFO L146 ILogger]: Start minimizeSevpa. Operand 396 states. [2019-05-23 11:25:19,868 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 396 to 391. [2019-05-23 11:25:19,868 INFO L146 ILogger]: Start removeUnreachable. Operand 391 states. [2019-05-23 11:25:19,869 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 391 states to 391 states and 395 transitions. [2019-05-23 11:25:19,869 INFO L146 ILogger]: Start accepts. Automaton has 391 states and 395 transitions. Word has length 383 [2019-05-23 11:25:19,870 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:19,870 INFO L146 ILogger]: Abstraction has 391 states and 395 transitions. [2019-05-23 11:25:19,870 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:25:19,870 INFO L146 ILogger]: Start isEmpty. Operand 391 states and 395 transitions. [2019-05-23 11:25:19,874 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 391 [2019-05-23 11:25:19,875 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:19,875 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:19,875 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:19,876 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:19,876 INFO L146 ILogger]: Analyzing trace with hash 1665125913, now seen corresponding path program 21 times [2019-05-23 11:25:19,876 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:19,877 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:19,877 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:19,878 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:19,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:19,929 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:21,254 INFO L146 ILogger]: Checked inductivity of 2083 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:25:21,255 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:21,255 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:21,265 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:21,525 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:25:21,525 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:21,529 INFO L146 ILogger]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:25:21,533 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:22,361 INFO L146 ILogger]: Checked inductivity of 2083 backedges. 36 proven. 111 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2019-05-23 11:25:22,380 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:22,381 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 18] total 63 [2019-05-23 11:25:22,381 INFO L146 ILogger]: Interpolant automaton has 63 states [2019-05-23 11:25:22,381 INFO L146 ILogger]: Constructing interpolant automaton starting with 63 interpolants. [2019-05-23 11:25:22,382 INFO L146 ILogger]: CoverageRelationStatistics Valid=644, Invalid=3262, Unknown=0, NotChecked=0, Total=3906 [2019-05-23 11:25:22,382 INFO L146 ILogger]: Start difference. First operand 391 states and 395 transitions. Second operand 63 states. [2019-05-23 11:25:26,451 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:26,451 INFO L146 ILogger]: Finished difference Result 665 states and 676 transitions. [2019-05-23 11:25:26,451 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2019-05-23 11:25:26,451 INFO L146 ILogger]: Start accepts. Automaton has 63 states. Word has length 390 [2019-05-23 11:25:26,452 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:26,454 INFO L146 ILogger]: With dead ends: 665 [2019-05-23 11:25:26,454 INFO L146 ILogger]: Without dead ends: 439 [2019-05-23 11:25:26,456 INFO L146 ILogger]: 0 DeclaredPredicates, 513 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4122 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3290, Invalid=16170, Unknown=0, NotChecked=0, Total=19460 [2019-05-23 11:25:26,457 INFO L146 ILogger]: Start minimizeSevpa. Operand 439 states. [2019-05-23 11:25:26,462 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 439 to 419. [2019-05-23 11:25:26,462 INFO L146 ILogger]: Start removeUnreachable. Operand 419 states. [2019-05-23 11:25:26,463 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 419 states to 419 states and 423 transitions. [2019-05-23 11:25:26,463 INFO L146 ILogger]: Start accepts. Automaton has 419 states and 423 transitions. Word has length 390 [2019-05-23 11:25:26,463 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:26,463 INFO L146 ILogger]: Abstraction has 419 states and 423 transitions. [2019-05-23 11:25:26,463 INFO L146 ILogger]: Interpolant automaton has 63 states. [2019-05-23 11:25:26,464 INFO L146 ILogger]: Start isEmpty. Operand 419 states and 423 transitions. [2019-05-23 11:25:26,466 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 419 [2019-05-23 11:25:26,466 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:26,466 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:26,467 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:26,467 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:26,467 INFO L146 ILogger]: Analyzing trace with hash -656265426, now seen corresponding path program 22 times [2019-05-23 11:25:26,467 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:26,467 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:26,468 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:26,468 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:26,468 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:26,500 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:27,390 INFO L146 ILogger]: Checked inductivity of 2367 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:25:27,390 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:27,390 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:27,399 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:25:27,980 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:25:27,981 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:27,984 INFO L146 ILogger]: Trace formula consists of 644 conjuncts, 48 conjunts are in the unsatisfiable core [2019-05-23 11:25:27,987 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:28,129 INFO L146 ILogger]: Checked inductivity of 2367 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:25:28,149 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:28,149 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-05-23 11:25:28,150 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:25:28,150 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:25:28,151 INFO L146 ILogger]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:25:28,151 INFO L146 ILogger]: Start difference. First operand 419 states and 423 transitions. Second operand 51 states. [2019-05-23 11:25:29,441 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:29,441 INFO L146 ILogger]: Finished difference Result 678 states and 686 transitions. [2019-05-23 11:25:29,442 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-05-23 11:25:29,442 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 418 [2019-05-23 11:25:29,442 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:29,443 INFO L146 ILogger]: With dead ends: 678 [2019-05-23 11:25:29,443 INFO L146 ILogger]: Without dead ends: 431 [2019-05-23 11:25:29,445 INFO L146 ILogger]: 0 DeclaredPredicates, 512 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:25:29,446 INFO L146 ILogger]: Start minimizeSevpa. Operand 431 states. [2019-05-23 11:25:29,451 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 431 to 426. [2019-05-23 11:25:29,451 INFO L146 ILogger]: Start removeUnreachable. Operand 426 states. [2019-05-23 11:25:29,452 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 426 states to 426 states and 430 transitions. [2019-05-23 11:25:29,452 INFO L146 ILogger]: Start accepts. Automaton has 426 states and 430 transitions. Word has length 418 [2019-05-23 11:25:29,452 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:29,452 INFO L146 ILogger]: Abstraction has 426 states and 430 transitions. [2019-05-23 11:25:29,452 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:25:29,452 INFO L146 ILogger]: Start isEmpty. Operand 426 states and 430 transitions. [2019-05-23 11:25:29,455 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 426 [2019-05-23 11:25:29,455 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:29,455 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:29,455 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:29,456 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:29,456 INFO L146 ILogger]: Analyzing trace with hash 2039814520, now seen corresponding path program 23 times [2019-05-23 11:25:29,456 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:29,456 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:29,457 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:29,457 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:29,457 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:29,491 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:31,057 INFO L146 ILogger]: Checked inductivity of 2529 backedges. 0 proven. 1956 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:25:31,057 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:31,057 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:31,069 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1