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/avg20_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:23:02,126 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:23:02,128 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:23:02,140 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:23:02,140 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:23:02,141 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:23:02,142 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:23:02,144 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:23:02,146 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:23:02,146 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:23:02,147 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:23:02,148 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:23:02,148 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:23:02,149 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:23:02,151 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:23:02,151 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:23:02,152 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:23:02,154 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:23:02,156 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:23:02,158 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:23:02,159 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:23:02,160 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:23:02,163 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:23:02,163 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:23:02,163 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:23:02,164 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:23:02,166 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:23:02,167 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:23:02,167 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:23:02,168 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:23:02,169 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:23:02,170 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:23:02,173 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:23:02,173 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:23:02,174 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:23:02,174 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:23:02,174 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:23:02,175 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:23:02,178 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:23:02,178 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:23:02,208 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:23:02,208 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:23:02,210 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:23:02,211 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:23:02,211 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:23:02,211 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:23:02,211 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:23:02,212 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:23:02,213 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:23:02,213 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:23:02,213 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:23:02,213 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:23:02,213 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:23:02,214 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:23:02,214 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:23:02,214 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:23:02,214 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:23:02,214 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:23:02,215 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:23:02,216 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:23:02,216 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:23:02,216 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:23:02,217 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:23:02,217 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:23:02,217 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:23:02,217 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:23:02,217 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:23:02,218 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:23:02,219 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 11:23:02,268 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:23:02,283 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:23:02,287 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:23:02,288 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:23:02,290 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:23:02,291 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/avg20_true-unreach-call.i [2019-05-23 11:23:02,344 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc6cf809/74e84d4913224b8cbdc1e99099df8b4a/FLAG20baa0cfe [2019-05-23 11:23:02,802 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:23:02,803 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/avg20_true-unreach-call.i [2019-05-23 11:23:02,809 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc6cf809/74e84d4913224b8cbdc1e99099df8b4a/FLAG20baa0cfe [2019-05-23 11:23:03,185 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc6cf809/74e84d4913224b8cbdc1e99099df8b4a [2019-05-23 11:23:03,195 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:23:03,196 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:23:03,197 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:03,197 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:23:03,201 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:23:03,202 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,205 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56842730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03, skipping insertion in model container [2019-05-23 11:23:03,205 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,212 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:23:03,232 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:23:03,428 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:03,440 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:23:03,470 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:03,497 INFO L146 ILogger]: Completed translation [2019-05-23 11:23:03,497 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03 WrapperNode [2019-05-23 11:23:03,498 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:03,499 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:03,499 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:23:03,499 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:23:03,509 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,517 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,542 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:03,542 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:23:03,542 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:23:03,543 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:23:03,551 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,551 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,554 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,555 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,648 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,653 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,655 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (1/1) ... [2019-05-23 11:23:03,658 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:23:03,658 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:23:03,658 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:23:03,658 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:23:03,660 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (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 11:23:03,715 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:23:03,715 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:23:03,715 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:23:03,715 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:23:03,715 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:23:03,716 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:23:04,292 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:23:04,292 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:23:04,293 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:04 BoogieIcfgContainer [2019-05-23 11:23:04,294 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:23:04,294 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:23:04,295 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:23:04,297 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:23:04,298 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:23:03" (1/3) ... [2019-05-23 11:23:04,299 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156cc150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:04, skipping insertion in model container [2019-05-23 11:23:04,299 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:03" (2/3) ... [2019-05-23 11:23:04,299 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156cc150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:04, skipping insertion in model container [2019-05-23 11:23:04,299 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:04" (3/3) ... [2019-05-23 11:23:04,301 INFO L146 ILogger]: Analyzing ICFG avg20_true-unreach-call.i [2019-05-23 11:23:04,311 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:23:04,319 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:23:04,336 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:23:04,367 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:23:04,367 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:23:04,368 INFO L146 ILogger]: Hoare is true [2019-05-23 11:23:04,368 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:23:04,368 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:23:04,368 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:23:04,368 INFO L146 ILogger]: Difference is false [2019-05-23 11:23:04,368 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:23:04,369 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:23:04,385 INFO L146 ILogger]: Start isEmpty. Operand 105 states. [2019-05-23 11:23:04,394 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:23:04,394 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:04,395 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 11:23:04,397 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:04,402 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:04,403 INFO L146 ILogger]: Analyzing trace with hash -503519154, now seen corresponding path program 1 times [2019-05-23 11:23:04,404 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:04,405 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:04,440 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:04,441 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:04,441 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:04,483 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:04,563 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 11:23:04,566 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:23:04,568 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:23:04,572 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:23:04,586 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:23:04,587 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:23:04,590 INFO L146 ILogger]: Start difference. First operand 105 states. Second operand 3 states. [2019-05-23 11:23:04,710 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:04,710 INFO L146 ILogger]: Finished difference Result 199 states and 219 transitions. [2019-05-23 11:23:04,711 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:23:04,712 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 68 [2019-05-23 11:23:04,713 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:04,728 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:23:04,729 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:23:04,733 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 11:23:04,756 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:23:04,786 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-05-23 11:23:04,788 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:23:04,790 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2019-05-23 11:23:04,794 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 68 [2019-05-23 11:23:04,795 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:04,795 INFO L146 ILogger]: Abstraction has 100 states and 104 transitions. [2019-05-23 11:23:04,795 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:23:04,796 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 104 transitions. [2019-05-23 11:23:04,800 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:23:04,800 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:04,800 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 11:23:04,802 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:04,803 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:04,803 INFO L146 ILogger]: Analyzing trace with hash -1483383517, now seen corresponding path program 1 times [2019-05-23 11:23:04,803 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:04,803 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:04,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:04,805 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:04,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:04,857 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,045 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 11:23:05,046 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:05,046 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 11:23:05,066 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:05,122 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,123 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:23:05,131 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:05,179 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 11:23:05,210 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:05,210 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:23:05,214 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:23:05,215 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:23:05,215 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:23:05,215 INFO L146 ILogger]: Start difference. First operand 100 states and 104 transitions. Second operand 6 states. [2019-05-23 11:23:05,573 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:05,573 INFO L146 ILogger]: Finished difference Result 212 states and 223 transitions. [2019-05-23 11:23:05,577 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:23:05,577 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 75 [2019-05-23 11:23:05,577 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:05,579 INFO L146 ILogger]: With dead ends: 212 [2019-05-23 11:23:05,579 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:23:05,581 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 11:23:05,582 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:23:05,604 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 110. [2019-05-23 11:23:05,605 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:23:05,606 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2019-05-23 11:23:05,607 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 75 [2019-05-23 11:23:05,607 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:05,607 INFO L146 ILogger]: Abstraction has 110 states and 114 transitions. [2019-05-23 11:23:05,607 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:23:05,608 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 114 transitions. [2019-05-23 11:23:05,611 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:23:05,611 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:05,612 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 11:23:05,612 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:05,613 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:05,613 INFO L146 ILogger]: Analyzing trace with hash -483601032, now seen corresponding path program 1 times [2019-05-23 11:23:05,613 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:05,613 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:05,614 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:05,615 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:05,616 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:05,658 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,738 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 11:23:05,738 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:05,738 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 11:23:05,748 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:05,798 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,799 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:23:05,803 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:05,851 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 11:23:05,874 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:05,874 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:23:05,875 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:23:05,875 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:23:05,875 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:23:05,876 INFO L146 ILogger]: Start difference. First operand 110 states and 114 transitions. Second operand 6 states. [2019-05-23 11:23:06,492 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:06,492 INFO L146 ILogger]: Finished difference Result 221 states and 231 transitions. [2019-05-23 11:23:06,495 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:23:06,495 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 103 [2019-05-23 11:23:06,495 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:06,497 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:23:06,497 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:23:06,498 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 11:23:06,499 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:23:06,508 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 132. [2019-05-23 11:23:06,508 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:23:06,510 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2019-05-23 11:23:06,510 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 103 [2019-05-23 11:23:06,510 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:06,511 INFO L146 ILogger]: Abstraction has 132 states and 136 transitions. [2019-05-23 11:23:06,511 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:23:06,511 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 136 transitions. [2019-05-23 11:23:06,513 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:23:06,513 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:06,513 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 11:23:06,514 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:06,514 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:06,514 INFO L146 ILogger]: Analyzing trace with hash 46998236, now seen corresponding path program 1 times [2019-05-23 11:23:06,514 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:06,514 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:06,515 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:06,515 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:06,516 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:06,553 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:06,688 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 11:23:06,689 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:06,689 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 11:23:06,701 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:06,757 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:06,759 INFO L146 ILogger]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:06,764 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:06,958 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 11:23:06,977 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:06,977 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:23:06,978 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:23:06,978 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:23:06,978 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:23:06,978 INFO L146 ILogger]: Start difference. First operand 132 states and 136 transitions. Second operand 10 states. [2019-05-23 11:23:07,548 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:07,548 INFO L146 ILogger]: Finished difference Result 263 states and 272 transitions. [2019-05-23 11:23:07,550 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:23:07,550 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 131 [2019-05-23 11:23:07,550 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:07,552 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:23:07,552 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:23:07,553 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:23:07,554 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:23:07,563 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 146. [2019-05-23 11:23:07,563 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:23:07,565 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2019-05-23 11:23:07,565 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 131 [2019-05-23 11:23:07,565 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:07,566 INFO L146 ILogger]: Abstraction has 146 states and 150 transitions. [2019-05-23 11:23:07,566 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:23:07,566 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 150 transitions. [2019-05-23 11:23:07,569 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:23:07,570 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:07,570 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 11:23:07,570 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:07,570 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:07,572 INFO L146 ILogger]: Analyzing trace with hash -1200733213, now seen corresponding path program 2 times [2019-05-23 11:23:07,572 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:07,572 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:07,575 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:07,575 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:07,575 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:07,643 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:07,913 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 11:23:07,914 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:07,914 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 11:23:07,923 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:07,990 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:07,990 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:07,992 INFO L146 ILogger]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:07,996 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:08,322 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 11:23:08,353 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:08,353 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:23:08,353 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:23:08,354 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:23:08,355 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:23:08,355 INFO L146 ILogger]: Start difference. First operand 146 states and 150 transitions. Second operand 11 states. [2019-05-23 11:23:08,562 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:08,562 INFO L146 ILogger]: Finished difference Result 272 states and 280 transitions. [2019-05-23 11:23:08,563 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:23:08,563 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 145 [2019-05-23 11:23:08,563 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:08,564 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:23:08,564 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:23:08,566 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:23:08,566 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:23:08,574 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 153. [2019-05-23 11:23:08,574 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:23:08,575 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2019-05-23 11:23:08,575 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 145 [2019-05-23 11:23:08,575 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:08,575 INFO L146 ILogger]: Abstraction has 153 states and 157 transitions. [2019-05-23 11:23:08,576 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:23:08,576 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 157 transitions. [2019-05-23 11:23:08,578 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:23:08,578 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:08,578 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 11:23:08,579 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:08,579 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:08,579 INFO L146 ILogger]: Analyzing trace with hash 104748121, now seen corresponding path program 3 times [2019-05-23 11:23:08,579 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:08,579 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:08,580 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:08,580 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:08,580 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:08,630 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:08,802 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 11:23:08,803 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:08,803 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 11:23:08,811 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:08,858 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:23:08,859 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:08,860 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:08,864 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:08,960 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 11:23:08,984 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:08,984 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:23:08,984 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:23:08,985 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:23:08,985 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:23:08,985 INFO L146 ILogger]: Start difference. First operand 153 states and 157 transitions. Second operand 16 states. [2019-05-23 11:23:09,571 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:09,572 INFO L146 ILogger]: Finished difference Result 315 states and 326 transitions. [2019-05-23 11:23:09,573 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:23:09,573 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 152 [2019-05-23 11:23:09,574 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:09,575 INFO L146 ILogger]: With dead ends: 315 [2019-05-23 11:23:09,576 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:23:09,577 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 11:23:09,577 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:23:09,584 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 181. [2019-05-23 11:23:09,585 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:23:09,586 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2019-05-23 11:23:09,586 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 152 [2019-05-23 11:23:09,590 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:09,590 INFO L146 ILogger]: Abstraction has 181 states and 185 transitions. [2019-05-23 11:23:09,590 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:23:09,590 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 185 transitions. [2019-05-23 11:23:09,593 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:23:09,593 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:09,593 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 11:23:09,594 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:09,594 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:09,594 INFO L146 ILogger]: Analyzing trace with hash -9292050, now seen corresponding path program 4 times [2019-05-23 11:23:09,594 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:09,594 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:09,595 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:09,595 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:09,596 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:09,653 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:09,827 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 11:23:09,828 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:09,828 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 11:23:09,837 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:09,894 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:09,895 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:09,896 INFO L146 ILogger]: Trace formula consists of 292 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:09,899 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:09,968 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 11:23:09,987 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:09,987 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:23:09,987 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:23:09,988 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:23:09,988 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:23:09,988 INFO L146 ILogger]: Start difference. First operand 181 states and 185 transitions. Second operand 15 states. [2019-05-23 11:23:10,187 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:10,188 INFO L146 ILogger]: Finished difference Result 328 states and 336 transitions. [2019-05-23 11:23:10,196 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:23:10,196 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 180 [2019-05-23 11:23:10,196 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:10,197 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:23:10,198 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:23:10,198 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:23:10,199 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:23:10,204 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-05-23 11:23:10,205 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:23:10,205 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2019-05-23 11:23:10,206 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 180 [2019-05-23 11:23:10,206 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:10,206 INFO L146 ILogger]: Abstraction has 188 states and 192 transitions. [2019-05-23 11:23:10,206 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:23:10,206 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 192 transitions. [2019-05-23 11:23:10,208 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 188 [2019-05-23 11:23:10,209 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:10,209 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 11:23:10,209 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:10,210 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:10,210 INFO L146 ILogger]: Analyzing trace with hash -397663560, now seen corresponding path program 5 times [2019-05-23 11:23:10,210 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:10,210 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:10,211 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:10,211 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:10,211 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:10,236 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:10,460 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 11:23:10,460 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:10,460 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 11:23:10,469 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:10,559 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:23:10,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:10,561 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:10,563 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:10,783 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 11:23:10,802 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:10,803 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:23:10,803 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:23:10,803 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:23:10,804 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:23:10,804 INFO L146 ILogger]: Start difference. First operand 188 states and 192 transitions. Second operand 22 states. [2019-05-23 11:23:11,690 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:11,690 INFO L146 ILogger]: Finished difference Result 371 states and 382 transitions. [2019-05-23 11:23:11,691 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:11,691 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 187 [2019-05-23 11:23:11,692 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:11,694 INFO L146 ILogger]: With dead ends: 371 [2019-05-23 11:23:11,694 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:23:11,695 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 11:23:11,696 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:23:11,700 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 216. [2019-05-23 11:23:11,701 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:23:11,702 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2019-05-23 11:23:11,702 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 187 [2019-05-23 11:23:11,702 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:11,702 INFO L146 ILogger]: Abstraction has 216 states and 220 transitions. [2019-05-23 11:23:11,703 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:23:11,703 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 220 transitions. [2019-05-23 11:23:11,705 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:23:11,705 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:11,705 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 11:23:11,706 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:11,706 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:11,706 INFO L146 ILogger]: Analyzing trace with hash 1152254147, now seen corresponding path program 6 times [2019-05-23 11:23:11,706 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:11,706 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:11,707 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:11,707 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:11,708 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:11,732 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:11,985 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 11:23:11,986 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:11,986 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 11:23:11,995 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:12,068 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:23:12,069 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:12,070 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:12,074 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:12,177 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 11:23:12,196 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:12,196 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:23:12,197 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:23:12,197 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:23:12,200 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:23:12,200 INFO L146 ILogger]: Start difference. First operand 216 states and 220 transitions. Second operand 22 states. [2019-05-23 11:23:12,801 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:12,801 INFO L146 ILogger]: Finished difference Result 396 states and 405 transitions. [2019-05-23 11:23:12,804 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:12,804 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:23:12,804 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:12,806 INFO L146 ILogger]: With dead ends: 396 [2019-05-23 11:23:12,806 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:23:12,807 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:23:12,807 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:23:12,812 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 230. [2019-05-23 11:23:12,813 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:23:12,813 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2019-05-23 11:23:12,814 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 215 [2019-05-23 11:23:12,814 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:12,814 INFO L146 ILogger]: Abstraction has 230 states and 234 transitions. [2019-05-23 11:23:12,814 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:23:12,815 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 234 transitions. [2019-05-23 11:23:12,817 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:23:12,817 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:12,817 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 11:23:12,818 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:12,818 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:12,818 INFO L146 ILogger]: Analyzing trace with hash 1030812380, now seen corresponding path program 7 times [2019-05-23 11:23:12,819 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:12,819 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:12,820 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:12,820 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:12,820 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:12,870 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:13,118 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 11:23:13,118 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:13,118 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 11:23:13,127 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:13,184 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:13,186 INFO L146 ILogger]: Trace formula consists of 365 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:23:13,189 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:13,265 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 11:23:13,297 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:13,298 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:23:13,299 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:23:13,300 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:23:13,300 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:23:13,301 INFO L146 ILogger]: Start difference. First operand 230 states and 234 transitions. Second operand 21 states. [2019-05-23 11:23:14,091 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:14,091 INFO L146 ILogger]: Finished difference Result 405 states and 413 transitions. [2019-05-23 11:23:14,097 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:23:14,097 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 229 [2019-05-23 11:23:14,098 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:14,099 INFO L146 ILogger]: With dead ends: 405 [2019-05-23 11:23:14,099 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:23:14,101 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:14,101 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:23:14,107 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 237. [2019-05-23 11:23:14,108 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:23:14,111 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2019-05-23 11:23:14,111 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 229 [2019-05-23 11:23:14,112 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:14,112 INFO L146 ILogger]: Abstraction has 237 states and 241 transitions. [2019-05-23 11:23:14,112 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:23:14,112 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 241 transitions. [2019-05-23 11:23:14,113 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 237 [2019-05-23 11:23:14,113 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:14,114 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 11:23:14,114 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:14,114 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:14,114 INFO L146 ILogger]: Analyzing trace with hash -1860993966, now seen corresponding path program 8 times [2019-05-23 11:23:14,115 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:14,115 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:14,115 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:14,116 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:14,116 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:14,139 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:14,825 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 11:23:14,826 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:14,826 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 11:23:14,835 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:14,905 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:14,905 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:14,907 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:23:14,910 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:15,009 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 11:23:15,040 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:15,040 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:23:15,041 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:23:15,041 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:23:15,042 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:23:15,042 INFO L146 ILogger]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2019-05-23 11:23:15,407 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:15,407 INFO L146 ILogger]: Finished difference Result 412 states and 420 transitions. [2019-05-23 11:23:15,408 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:23:15,408 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 236 [2019-05-23 11:23:15,408 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:15,409 INFO L146 ILogger]: With dead ends: 412 [2019-05-23 11:23:15,410 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:23:15,411 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:23:15,411 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:23:15,415 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 244. [2019-05-23 11:23:15,415 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:23:15,416 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2019-05-23 11:23:15,416 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 236 [2019-05-23 11:23:15,416 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:15,416 INFO L146 ILogger]: Abstraction has 244 states and 248 transitions. [2019-05-23 11:23:15,416 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:23:15,417 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 248 transitions. [2019-05-23 11:23:15,418 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 244 [2019-05-23 11:23:15,418 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:15,418 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 11:23:15,418 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:15,418 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:15,418 INFO L146 ILogger]: Analyzing trace with hash -1509981668, now seen corresponding path program 9 times [2019-05-23 11:23:15,419 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:15,419 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:15,419 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:15,419 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:15,420 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:15,444 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:16,892 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 11:23:16,892 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:16,893 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 11:23:16,901 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:16,982 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:23:16,982 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:16,983 INFO L146 ILogger]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:16,986 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:17,148 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 11:23:17,167 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:17,167 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-05-23 11:23:17,168 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:23:17,168 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:23:17,169 INFO L146 ILogger]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:23:17,169 INFO L146 ILogger]: Start difference. First operand 244 states and 248 transitions. Second operand 30 states. [2019-05-23 11:23:20,369 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:20,369 INFO L146 ILogger]: Finished difference Result 431 states and 440 transitions. [2019-05-23 11:23:20,374 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:23:20,374 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 243 [2019-05-23 11:23:20,375 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:20,376 INFO L146 ILogger]: With dead ends: 431 [2019-05-23 11:23:20,376 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:23:20,378 INFO L146 ILogger]: 0 DeclaredPredicates, 291 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:23:20,378 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:23:20,383 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 258. [2019-05-23 11:23:20,383 INFO L146 ILogger]: Start removeUnreachable. Operand 258 states. [2019-05-23 11:23:20,384 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 258 states to 258 states and 262 transitions. [2019-05-23 11:23:20,384 INFO L146 ILogger]: Start accepts. Automaton has 258 states and 262 transitions. Word has length 243 [2019-05-23 11:23:20,384 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:20,384 INFO L146 ILogger]: Abstraction has 258 states and 262 transitions. [2019-05-23 11:23:20,385 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:23:20,385 INFO L146 ILogger]: Start isEmpty. Operand 258 states and 262 transitions. [2019-05-23 11:23:20,386 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 258 [2019-05-23 11:23:20,386 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:20,386 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 11:23:20,387 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:20,387 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:20,387 INFO L146 ILogger]: Analyzing trace with hash -64980893, now seen corresponding path program 10 times [2019-05-23 11:23:20,387 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:20,387 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:20,388 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:20,388 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:20,388 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:20,413 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:21,934 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 11:23:21,935 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:21,935 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 11:23:21,946 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:22,061 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:22,062 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:22,064 INFO L146 ILogger]: Trace formula consists of 405 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:23:22,067 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:22,164 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 11:23:22,183 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:22,183 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:23:22,184 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:23:22,184 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:23:22,184 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:23:22,185 INFO L146 ILogger]: Start difference. First operand 258 states and 262 transitions. Second operand 27 states. [2019-05-23 11:23:22,904 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:22,904 INFO L146 ILogger]: Finished difference Result 440 states and 448 transitions. [2019-05-23 11:23:22,904 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:23:22,905 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 257 [2019-05-23 11:23:22,905 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:22,906 INFO L146 ILogger]: With dead ends: 440 [2019-05-23 11:23:22,906 INFO L146 ILogger]: Without dead ends: 270 [2019-05-23 11:23:22,907 INFO L146 ILogger]: 0 DeclaredPredicates, 303 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:23:22,907 INFO L146 ILogger]: Start minimizeSevpa. Operand 270 states. [2019-05-23 11:23:22,911 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 270 to 265. [2019-05-23 11:23:22,911 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:23:22,912 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 269 transitions. [2019-05-23 11:23:22,912 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 269 transitions. Word has length 257 [2019-05-23 11:23:22,913 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:22,913 INFO L146 ILogger]: Abstraction has 265 states and 269 transitions. [2019-05-23 11:23:22,913 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:23:22,913 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 269 transitions. [2019-05-23 11:23:22,914 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 265 [2019-05-23 11:23:22,914 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:22,915 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 11:23:22,915 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:22,915 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:22,915 INFO L146 ILogger]: Analyzing trace with hash 887018713, now seen corresponding path program 11 times [2019-05-23 11:23:22,915 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:22,915 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:22,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:22,916 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:22,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:22,939 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:23,474 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 11:23:23,474 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:23,474 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 11:23:23,483 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:23,791 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:23:23,792 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:23,793 INFO L146 ILogger]: Trace formula consists of 415 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:23:23,796 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:23,990 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 11:23:24,010 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:24,011 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2019-05-23 11:23:24,011 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:23:24,012 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:23:24,012 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:23:24,012 INFO L146 ILogger]: Start difference. First operand 265 states and 269 transitions. Second operand 36 states. [2019-05-23 11:23:25,434 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:25,435 INFO L146 ILogger]: Finished difference Result 483 states and 494 transitions. [2019-05-23 11:23:25,435 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:23:25,435 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 264 [2019-05-23 11:23:25,436 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:25,438 INFO L146 ILogger]: With dead ends: 483 [2019-05-23 11:23:25,438 INFO L146 ILogger]: Without dead ends: 313 [2019-05-23 11:23:25,440 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 11:23:25,440 INFO L146 ILogger]: Start minimizeSevpa. Operand 313 states. [2019-05-23 11:23:25,445 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 313 to 293. [2019-05-23 11:23:25,445 INFO L146 ILogger]: Start removeUnreachable. Operand 293 states. [2019-05-23 11:23:25,446 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2019-05-23 11:23:25,446 INFO L146 ILogger]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 264 [2019-05-23 11:23:25,447 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:25,447 INFO L146 ILogger]: Abstraction has 293 states and 297 transitions. [2019-05-23 11:23:25,447 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:23:25,447 INFO L146 ILogger]: Start isEmpty. Operand 293 states and 297 transitions. [2019-05-23 11:23:25,448 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 293 [2019-05-23 11:23:25,448 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:25,449 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 11:23:25,449 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:25,449 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:25,449 INFO L146 ILogger]: Analyzing trace with hash -499990866, now seen corresponding path program 12 times [2019-05-23 11:23:25,449 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:25,449 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:25,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:25,450 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:25,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:25,474 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:26,226 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 11:23:26,227 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:26,227 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 11:23:26,235 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:26,448 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:23:26,449 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:26,451 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:23:26,454 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:26,757 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 11:23:26,777 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:26,778 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 38 [2019-05-23 11:23:26,778 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:23:26,779 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:23:26,779 INFO L146 ILogger]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:23:26,779 INFO L146 ILogger]: Start difference. First operand 293 states and 297 transitions. Second operand 38 states. [2019-05-23 11:23:27,778 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:27,779 INFO L146 ILogger]: Finished difference Result 508 states and 517 transitions. [2019-05-23 11:23:27,779 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:23:27,779 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 292 [2019-05-23 11:23:27,779 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:27,780 INFO L146 ILogger]: With dead ends: 508 [2019-05-23 11:23:27,780 INFO L146 ILogger]: Without dead ends: 317 [2019-05-23 11:23:27,783 INFO L146 ILogger]: 0 DeclaredPredicates, 354 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1100, Invalid=4012, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:23:27,784 INFO L146 ILogger]: Start minimizeSevpa. Operand 317 states. [2019-05-23 11:23:27,788 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 317 to 307. [2019-05-23 11:23:27,788 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:23:27,789 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 311 transitions. [2019-05-23 11:23:27,789 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 311 transitions. Word has length 292 [2019-05-23 11:23:27,790 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:27,790 INFO L146 ILogger]: Abstraction has 307 states and 311 transitions. [2019-05-23 11:23:27,790 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:23:27,790 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 311 transitions. [2019-05-23 11:23:27,791 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 307 [2019-05-23 11:23:27,792 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:27,792 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 11:23:27,792 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:27,792 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:27,793 INFO L146 ILogger]: Analyzing trace with hash 687477199, now seen corresponding path program 13 times [2019-05-23 11:23:27,793 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:27,793 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:27,793 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:27,794 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:27,794 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:27,817 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:29,241 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 11:23:29,241 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:29,241 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 11:23:29,252 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:29,322 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:29,323 INFO L146 ILogger]: Trace formula consists of 478 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:23:29,327 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:29,962 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 11:23:30,017 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:30,017 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:23:30,019 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:23:30,019 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:23:30,020 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:23:30,020 INFO L146 ILogger]: Start difference. First operand 307 states and 311 transitions. Second operand 33 states. [2019-05-23 11:23:30,892 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:30,892 INFO L146 ILogger]: Finished difference Result 517 states and 525 transitions. [2019-05-23 11:23:30,892 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:23:30,892 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 306 [2019-05-23 11:23:30,892 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:30,894 INFO L146 ILogger]: With dead ends: 517 [2019-05-23 11:23:30,894 INFO L146 ILogger]: Without dead ends: 319 [2019-05-23 11:23:30,896 INFO L146 ILogger]: 0 DeclaredPredicates, 364 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:23:30,896 INFO L146 ILogger]: Start minimizeSevpa. Operand 319 states. [2019-05-23 11:23:30,900 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 319 to 314. [2019-05-23 11:23:30,901 INFO L146 ILogger]: Start removeUnreachable. Operand 314 states. [2019-05-23 11:23:30,901 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 314 states to 314 states and 318 transitions. [2019-05-23 11:23:30,901 INFO L146 ILogger]: Start accepts. Automaton has 314 states and 318 transitions. Word has length 306 [2019-05-23 11:23:30,902 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:30,902 INFO L146 ILogger]: Abstraction has 314 states and 318 transitions. [2019-05-23 11:23:30,902 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:23:30,902 INFO L146 ILogger]: Start isEmpty. Operand 314 states and 318 transitions. [2019-05-23 11:23:30,903 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 314 [2019-05-23 11:23:30,904 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:30,904 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 11:23:30,904 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:30,904 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:30,905 INFO L146 ILogger]: Analyzing trace with hash -1746810855, now seen corresponding path program 14 times [2019-05-23 11:23:30,905 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:30,905 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:30,905 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:30,906 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:30,906 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:30,935 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:31,384 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 11:23:31,384 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:31,384 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 11:23:31,392 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:31,482 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:31,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:31,484 INFO L146 ILogger]: Trace formula consists of 488 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:23:31,489 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:31,648 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 11:23:31,666 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:31,667 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:23:31,667 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:23:31,667 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:23:31,668 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:23:31,668 INFO L146 ILogger]: Start difference. First operand 314 states and 318 transitions. Second operand 35 states. [2019-05-23 11:23:32,360 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:32,360 INFO L146 ILogger]: Finished difference Result 524 states and 532 transitions. [2019-05-23 11:23:32,360 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:23:32,360 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 313 [2019-05-23 11:23:32,361 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:32,362 INFO L146 ILogger]: With dead ends: 524 [2019-05-23 11:23:32,362 INFO L146 ILogger]: Without dead ends: 326 [2019-05-23 11:23:32,364 INFO L146 ILogger]: 0 DeclaredPredicates, 375 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:23:32,364 INFO L146 ILogger]: Start minimizeSevpa. Operand 326 states. [2019-05-23 11:23:32,368 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 326 to 321. [2019-05-23 11:23:32,368 INFO L146 ILogger]: Start removeUnreachable. Operand 321 states. [2019-05-23 11:23:32,369 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 321 states to 321 states and 325 transitions. [2019-05-23 11:23:32,369 INFO L146 ILogger]: Start accepts. Automaton has 321 states and 325 transitions. Word has length 313 [2019-05-23 11:23:32,369 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:32,370 INFO L146 ILogger]: Abstraction has 321 states and 325 transitions. [2019-05-23 11:23:32,370 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:23:32,370 INFO L146 ILogger]: Start isEmpty. Operand 321 states and 325 transitions. [2019-05-23 11:23:32,371 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 321 [2019-05-23 11:23:32,371 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:32,372 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 11:23:32,372 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:32,372 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:32,372 INFO L146 ILogger]: Analyzing trace with hash 68700815, now seen corresponding path program 15 times [2019-05-23 11:23:32,373 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:32,373 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:32,373 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:32,373 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:32,374 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:32,401 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:33,371 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 11:23:33,371 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:33,371 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 11:23:33,379 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:33,526 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:23:33,526 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:33,528 INFO L146 ILogger]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:33,531 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:33,883 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 11:23:33,904 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:33,905 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:23:33,905 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:23:33,905 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:23:33,906 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:23:33,906 INFO L146 ILogger]: Start difference. First operand 321 states and 325 transitions. Second operand 46 states. [2019-05-23 11:23:35,441 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:35,441 INFO L146 ILogger]: Finished difference Result 567 states and 578 transitions. [2019-05-23 11:23:35,447 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:23:35,447 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 320 [2019-05-23 11:23:35,447 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:35,449 INFO L146 ILogger]: With dead ends: 567 [2019-05-23 11:23:35,449 INFO L146 ILogger]: Without dead ends: 369 [2019-05-23 11:23:35,452 INFO L146 ILogger]: 0 DeclaredPredicates, 396 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:23:35,452 INFO L146 ILogger]: Start minimizeSevpa. Operand 369 states. [2019-05-23 11:23:35,456 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 369 to 349. [2019-05-23 11:23:35,457 INFO L146 ILogger]: Start removeUnreachable. Operand 349 states. [2019-05-23 11:23:35,457 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2019-05-23 11:23:35,458 INFO L146 ILogger]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 320 [2019-05-23 11:23:35,458 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:35,458 INFO L146 ILogger]: Abstraction has 349 states and 353 transitions. [2019-05-23 11:23:35,458 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:23:35,458 INFO L146 ILogger]: Start isEmpty. Operand 349 states and 353 transitions. [2019-05-23 11:23:35,460 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 349 [2019-05-23 11:23:35,460 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:35,461 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 11:23:35,461 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:35,461 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:35,461 INFO L146 ILogger]: Analyzing trace with hash 31541138, now seen corresponding path program 16 times [2019-05-23 11:23:35,461 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:35,461 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:35,462 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:35,462 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:35,462 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:35,489 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:35,990 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 11:23:35,991 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:35,991 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 11:23:35,999 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:36,262 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:36,263 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:36,265 INFO L146 ILogger]: Trace formula consists of 541 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:23:36,268 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:36,374 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 11:23:36,394 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:36,394 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:23:36,395 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:23:36,395 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:23:36,396 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:23:36,396 INFO L146 ILogger]: Start difference. First operand 349 states and 353 transitions. Second operand 39 states. [2019-05-23 11:23:37,281 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:37,281 INFO L146 ILogger]: Finished difference Result 580 states and 588 transitions. [2019-05-23 11:23:37,281 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:23:37,281 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 348 [2019-05-23 11:23:37,282 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:37,283 INFO L146 ILogger]: With dead ends: 580 [2019-05-23 11:23:37,283 INFO L146 ILogger]: Without dead ends: 361 [2019-05-23 11:23:37,285 INFO L146 ILogger]: 0 DeclaredPredicates, 418 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:23:37,286 INFO L146 ILogger]: Start minimizeSevpa. Operand 361 states. [2019-05-23 11:23:37,290 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 361 to 356. [2019-05-23 11:23:37,290 INFO L146 ILogger]: Start removeUnreachable. Operand 356 states. [2019-05-23 11:23:37,291 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 356 states to 356 states and 360 transitions. [2019-05-23 11:23:37,291 INFO L146 ILogger]: Start accepts. Automaton has 356 states and 360 transitions. Word has length 348 [2019-05-23 11:23:37,292 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:37,292 INFO L146 ILogger]: Abstraction has 356 states and 360 transitions. [2019-05-23 11:23:37,292 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:23:37,292 INFO L146 ILogger]: Start isEmpty. Operand 356 states and 360 transitions. [2019-05-23 11:23:37,294 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 356 [2019-05-23 11:23:37,294 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:37,294 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 11:23:37,294 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:37,295 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:37,295 INFO L146 ILogger]: Analyzing trace with hash -1448115876, now seen corresponding path program 17 times [2019-05-23 11:23:37,295 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:37,295 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:37,302 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:37,303 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:37,303 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:37,330 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:37,970 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 11:23:37,971 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:37,971 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 11:23:37,981 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:38,792 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:23:38,792 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:38,795 INFO L146 ILogger]: Trace formula consists of 551 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:23:38,800 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:38,908 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 11:23:38,928 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:38,929 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:23:38,929 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:23:38,929 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:23:38,930 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:23:38,930 INFO L146 ILogger]: Start difference. First operand 356 states and 360 transitions. Second operand 41 states. [2019-05-23 11:23:39,797 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:39,797 INFO L146 ILogger]: Finished difference Result 587 states and 595 transitions. [2019-05-23 11:23:39,797 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:23:39,797 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 355 [2019-05-23 11:23:39,798 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:39,799 INFO L146 ILogger]: With dead ends: 587 [2019-05-23 11:23:39,799 INFO L146 ILogger]: Without dead ends: 368 [2019-05-23 11:23:39,801 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 11:23:39,801 INFO L146 ILogger]: Start minimizeSevpa. Operand 368 states. [2019-05-23 11:23:39,806 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 368 to 363. [2019-05-23 11:23:39,806 INFO L146 ILogger]: Start removeUnreachable. Operand 363 states. [2019-05-23 11:23:39,807 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 363 states to 363 states and 367 transitions. [2019-05-23 11:23:39,807 INFO L146 ILogger]: Start accepts. Automaton has 363 states and 367 transitions. Word has length 355 [2019-05-23 11:23:39,807 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:39,807 INFO L146 ILogger]: Abstraction has 363 states and 367 transitions. [2019-05-23 11:23:39,807 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:23:39,808 INFO L146 ILogger]: Start isEmpty. Operand 363 states and 367 transitions. [2019-05-23 11:23:39,809 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 363 [2019-05-23 11:23:39,809 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:39,810 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 11:23:39,810 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:39,810 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:39,810 INFO L146 ILogger]: Analyzing trace with hash 1489801298, now seen corresponding path program 18 times [2019-05-23 11:23:39,810 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:39,811 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:39,811 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:39,811 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:39,811 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:39,838 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:41,041 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 11:23:41,042 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:41,042 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 11:23:41,050 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:41,684 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:23:41,684 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:41,688 INFO L146 ILogger]: Trace formula consists of 438 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:23:41,691 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:42,358 INFO L146 ILogger]: Checked inductivity of 1624 backedges. 127 proven. 75 refuted. 0 times theorem prover too weak. 1422 trivial. 0 not checked. [2019-05-23 11:23:42,378 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:42,378 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 16] total 54 [2019-05-23 11:23:42,379 INFO L146 ILogger]: Interpolant automaton has 54 states [2019-05-23 11:23:42,379 INFO L146 ILogger]: Constructing interpolant automaton starting with 54 interpolants. [2019-05-23 11:23:42,379 INFO L146 ILogger]: CoverageRelationStatistics Valid=530, Invalid=2332, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:23:42,380 INFO L146 ILogger]: Start difference. First operand 363 states and 367 transitions. Second operand 54 states. [2019-05-23 11:23:45,478 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:45,478 INFO L146 ILogger]: Finished difference Result 601 states and 610 transitions. [2019-05-23 11:23:45,479 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-05-23 11:23:45,480 INFO L146 ILogger]: Start accepts. Automaton has 54 states. Word has length 362 [2019-05-23 11:23:45,480 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:45,481 INFO L146 ILogger]: With dead ends: 601 [2019-05-23 11:23:45,481 INFO L146 ILogger]: Without dead ends: 382 [2019-05-23 11:23:45,483 INFO L146 ILogger]: 0 DeclaredPredicates, 458 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2397 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2479, Invalid=9511, Unknown=0, NotChecked=0, Total=11990 [2019-05-23 11:23:45,483 INFO L146 ILogger]: Start minimizeSevpa. Operand 382 states. [2019-05-23 11:23:45,486 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 382 to 377. [2019-05-23 11:23:45,486 INFO L146 ILogger]: Start removeUnreachable. Operand 377 states. [2019-05-23 11:23:45,487 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 377 states to 377 states and 381 transitions. [2019-05-23 11:23:45,487 INFO L146 ILogger]: Start accepts. Automaton has 377 states and 381 transitions. Word has length 362 [2019-05-23 11:23:45,487 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:45,487 INFO L146 ILogger]: Abstraction has 377 states and 381 transitions. [2019-05-23 11:23:45,487 INFO L146 ILogger]: Interpolant automaton has 54 states. [2019-05-23 11:23:45,488 INFO L146 ILogger]: Start isEmpty. Operand 377 states and 381 transitions. [2019-05-23 11:23:45,489 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 377 [2019-05-23 11:23:45,490 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:45,490 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 11:23:45,490 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:45,490 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:45,491 INFO L146 ILogger]: Analyzing trace with hash -693820071, now seen corresponding path program 19 times [2019-05-23 11:23:45,491 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:45,491 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:45,492 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:45,492 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:45,492 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:45,523 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:46,705 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2019-05-23 11:23:46,705 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:46,705 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 11:23:46,714 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:46,794 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:46,795 INFO L146 ILogger]: Trace formula consists of 581 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:23:46,799 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:46,894 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2019-05-23 11:23:46,912 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:46,912 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:23:46,912 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:23:46,913 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:23:46,913 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:23:46,913 INFO L146 ILogger]: Start difference. First operand 377 states and 381 transitions. Second operand 17 states. [2019-05-23 11:23:47,270 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:47,271 INFO L146 ILogger]: Finished difference Result 588 states and 597 transitions. [2019-05-23 11:23:47,272 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:23:47,272 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 376 [2019-05-23 11:23:47,273 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:47,276 INFO L146 ILogger]: With dead ends: 588 [2019-05-23 11:23:47,276 INFO L146 ILogger]: Without dead ends: 413 [2019-05-23 11:23:47,277 INFO L146 ILogger]: 0 DeclaredPredicates, 402 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:23:47,277 INFO L146 ILogger]: Start minimizeSevpa. Operand 413 states. [2019-05-23 11:23:47,282 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 413 to 398. [2019-05-23 11:23:47,282 INFO L146 ILogger]: Start removeUnreachable. Operand 398 states. [2019-05-23 11:23:47,283 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 398 states to 398 states and 402 transitions. [2019-05-23 11:23:47,283 INFO L146 ILogger]: Start accepts. Automaton has 398 states and 402 transitions. Word has length 376 [2019-05-23 11:23:47,284 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:47,284 INFO L146 ILogger]: Abstraction has 398 states and 402 transitions. [2019-05-23 11:23:47,284 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:23:47,284 INFO L146 ILogger]: Start isEmpty. Operand 398 states and 402 transitions. [2019-05-23 11:23:47,286 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 398 [2019-05-23 11:23:47,286 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:47,286 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 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 11:23:47,287 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:47,287 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:47,287 INFO L146 ILogger]: Analyzing trace with hash 295447288, now seen corresponding path program 20 times [2019-05-23 11:23:47,287 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:47,287 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:47,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:47,288 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:47,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:47,317 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:47,731 INFO L146 ILogger]: Checked inductivity of 1923 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1769 trivial. 0 not checked. [2019-05-23 11:23:47,731 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:47,731 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 11:23:47,739 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:47,831 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:47,831 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:47,832 INFO L146 ILogger]: Trace formula consists of 614 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:23:47,836 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:48,073 INFO L146 ILogger]: Checked inductivity of 1923 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1769 trivial. 0 not checked. [2019-05-23 11:23:48,092 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:48,092 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:23:48,093 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:23:48,093 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:23:48,093 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:23:48,093 INFO L146 ILogger]: Start difference. First operand 398 states and 402 transitions. Second operand 19 states. [2019-05-23 11:23:49,035 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:49,035 INFO L146 ILogger]: Finished difference Result 623 states and 632 transitions. [2019-05-23 11:23:49,036 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:23:49,036 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 397 [2019-05-23 11:23:49,036 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:49,038 INFO L146 ILogger]: With dead ends: 623 [2019-05-23 11:23:49,038 INFO L146 ILogger]: Without dead ends: 434 [2019-05-23 11:23:49,039 INFO L146 ILogger]: 0 DeclaredPredicates, 427 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:23:49,040 INFO L146 ILogger]: Start minimizeSevpa. Operand 434 states. [2019-05-23 11:23:49,045 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 434 to 419. [2019-05-23 11:23:49,046 INFO L146 ILogger]: Start removeUnreachable. Operand 419 states. [2019-05-23 11:23:49,046 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 419 states to 419 states and 423 transitions. [2019-05-23 11:23:49,047 INFO L146 ILogger]: Start accepts. Automaton has 419 states and 423 transitions. Word has length 397 [2019-05-23 11:23:49,047 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:49,047 INFO L146 ILogger]: Abstraction has 419 states and 423 transitions. [2019-05-23 11:23:49,047 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:23:49,047 INFO L146 ILogger]: Start isEmpty. Operand 419 states and 423 transitions. [2019-05-23 11:23:49,049 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 419 [2019-05-23 11:23:49,049 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:49,050 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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 11:23:49,050 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:49,050 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:49,051 INFO L146 ILogger]: Analyzing trace with hash -1750192071, now seen corresponding path program 21 times [2019-05-23 11:23:49,051 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:49,051 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:49,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:49,052 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:49,052 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:49,083 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:49,403 INFO L146 ILogger]: Checked inductivity of 2073 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 1869 trivial. 0 not checked. [2019-05-23 11:23:49,404 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:49,404 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 11:23:49,414 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:49,733 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:23:49,733 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:49,737 INFO L146 ILogger]: Trace formula consists of 441 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:23:49,741 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:50,218 INFO L146 ILogger]: Checked inductivity of 2073 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2019-05-23 11:23:50,237 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:50,237 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2019-05-23 11:23:50,238 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:23:50,238 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:23:50,238 INFO L146 ILogger]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:23:50,238 INFO L146 ILogger]: Start difference. First operand 419 states and 423 transitions. Second operand 32 states. [2019-05-23 11:23:51,343 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:51,343 INFO L146 ILogger]: Finished difference Result 670 states and 680 transitions. [2019-05-23 11:23:51,343 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:23:51,344 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 418 [2019-05-23 11:23:51,344 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:51,346 INFO L146 ILogger]: With dead ends: 670 [2019-05-23 11:23:51,347 INFO L146 ILogger]: Without dead ends: 467 [2019-05-23 11:23:51,348 INFO L146 ILogger]: 0 DeclaredPredicates, 480 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=645, Invalid=2895, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:23:51,349 INFO L146 ILogger]: Start minimizeSevpa. Operand 467 states. [2019-05-23 11:23:51,354 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 467 to 447. [2019-05-23 11:23:51,355 INFO L146 ILogger]: Start removeUnreachable. Operand 447 states. [2019-05-23 11:23:51,355 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 447 states to 447 states and 451 transitions. [2019-05-23 11:23:51,356 INFO L146 ILogger]: Start accepts. Automaton has 447 states and 451 transitions. Word has length 418 [2019-05-23 11:23:51,356 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:51,356 INFO L146 ILogger]: Abstraction has 447 states and 451 transitions. [2019-05-23 11:23:51,356 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:23:51,356 INFO L146 ILogger]: Start isEmpty. Operand 447 states and 451 transitions. [2019-05-23 11:23:51,359 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 447 [2019-05-23 11:23:51,359 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:51,359 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:51,359 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:51,360 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:51,360 INFO L146 ILogger]: Analyzing trace with hash 1783999279, now seen corresponding path program 22 times [2019-05-23 11:23:51,360 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:51,360 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:51,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:51,361 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:51,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:51,396 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:52,107 INFO L146 ILogger]: Checked inductivity of 2287 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 2026 trivial. 0 not checked. [2019-05-23 11:23:52,107 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:52,107 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 11:23:52,116 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:52,528 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:52,529 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:52,531 INFO L146 ILogger]: Trace formula consists of 690 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:23:52,535 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:52,651 INFO L146 ILogger]: Checked inductivity of 2287 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 2026 trivial. 0 not checked. [2019-05-23 11:23:52,671 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:52,671 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:23:52,672 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:23:52,672 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:23:52,672 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:23:52,672 INFO L146 ILogger]: Start difference. First operand 447 states and 451 transitions. Second operand 23 states. [2019-05-23 11:23:53,230 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:53,230 INFO L146 ILogger]: Finished difference Result 707 states and 716 transitions. [2019-05-23 11:23:53,230 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:23:53,231 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 446 [2019-05-23 11:23:53,231 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:53,233 INFO L146 ILogger]: With dead ends: 707 [2019-05-23 11:23:53,234 INFO L146 ILogger]: Without dead ends: 483 [2019-05-23 11:23:53,234 INFO L146 ILogger]: 0 DeclaredPredicates, 484 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:23:53,235 INFO L146 ILogger]: Start minimizeSevpa. Operand 483 states. [2019-05-23 11:23:53,241 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 483 to 468. [2019-05-23 11:23:53,241 INFO L146 ILogger]: Start removeUnreachable. Operand 468 states. [2019-05-23 11:23:53,242 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 468 states to 468 states and 472 transitions. [2019-05-23 11:23:53,242 INFO L146 ILogger]: Start accepts. Automaton has 468 states and 472 transitions. Word has length 446 [2019-05-23 11:23:53,242 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:53,242 INFO L146 ILogger]: Abstraction has 468 states and 472 transitions. [2019-05-23 11:23:53,242 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:23:53,242 INFO L146 ILogger]: Start isEmpty. Operand 468 states and 472 transitions. [2019-05-23 11:23:53,245 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 468 [2019-05-23 11:23:53,245 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:53,245 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:53,246 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:53,246 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:53,246 INFO L146 ILogger]: Analyzing trace with hash 412568508, now seen corresponding path program 23 times [2019-05-23 11:23:53,246 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:53,246 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:53,247 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:53,247 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:53,247 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:53,283 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:53,677 INFO L146 ILogger]: Checked inductivity of 2479 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2154 trivial. 0 not checked. [2019-05-23 11:23:53,677 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:53,677 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:23:53,688 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:58,261 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2019-05-23 11:23:58,261 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:58,268 INFO L146 ILogger]: Trace formula consists of 723 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:23:58,272 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:58,436 INFO L146 ILogger]: Checked inductivity of 2479 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2154 trivial. 0 not checked. [2019-05-23 11:23:58,457 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:58,457 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:23:58,458 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:23:58,458 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:23:58,458 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:23:58,459 INFO L146 ILogger]: Start difference. First operand 468 states and 472 transitions. Second operand 25 states. [2019-05-23 11:23:59,031 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:59,032 INFO L146 ILogger]: Finished difference Result 742 states and 751 transitions. [2019-05-23 11:23:59,032 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:23:59,032 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 467 [2019-05-23 11:23:59,033 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:59,035 INFO L146 ILogger]: With dead ends: 742 [2019-05-23 11:23:59,035 INFO L146 ILogger]: Without dead ends: 504 [2019-05-23 11:23:59,036 INFO L146 ILogger]: 0 DeclaredPredicates, 529 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:23:59,037 INFO L146 ILogger]: Start minimizeSevpa. Operand 504 states. [2019-05-23 11:23:59,043 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 504 to 489. [2019-05-23 11:23:59,043 INFO L146 ILogger]: Start removeUnreachable. Operand 489 states. [2019-05-23 11:23:59,044 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 489 states to 489 states and 493 transitions. [2019-05-23 11:23:59,044 INFO L146 ILogger]: Start accepts. Automaton has 489 states and 493 transitions. Word has length 467 [2019-05-23 11:23:59,044 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:59,044 INFO L146 ILogger]: Abstraction has 489 states and 493 transitions. [2019-05-23 11:23:59,045 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:23:59,045 INFO L146 ILogger]: Start isEmpty. Operand 489 states and 493 transitions. [2019-05-23 11:23:59,047 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 489 [2019-05-23 11:23:59,047 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:59,048 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:59,048 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:59,048 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:59,049 INFO L146 ILogger]: Analyzing trace with hash -579761969, now seen corresponding path program 24 times [2019-05-23 11:23:59,049 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:59,049 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:59,049 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:59,050 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:59,050 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:59,082 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:59,439 INFO L146 ILogger]: Checked inductivity of 2692 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2019-05-23 11:23:59,440 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:59,440 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:59,451 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:00,430 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2019-05-23 11:24:00,430 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:00,434 INFO L146 ILogger]: Trace formula consists of 564 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:24:00,437 INFO L146 ILogger]: Computing forward predicates...