java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/zero_sum_const3_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:34,181 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:34,183 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:34,194 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:34,195 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:34,196 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:34,197 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:34,199 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:34,200 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:34,201 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:34,203 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:34,203 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:34,204 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:34,205 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:34,206 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:34,207 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:34,208 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:34,210 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:34,212 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:34,214 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:34,217 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:34,218 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:34,224 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:34,224 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:34,224 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:34,228 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:34,229 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:34,230 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:34,232 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:34,233 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:34,234 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:34,237 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:34,239 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:34,239 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:34,241 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:34,241 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:34,241 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:34,242 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:34,243 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:34,244 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:34,277 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:34,277 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:34,279 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:34,280 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:34,280 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:34,280 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:34,280 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:34,281 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:34,282 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:34,282 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:34,282 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:34,282 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:34,283 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:34,283 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:34,283 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:34,283 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:34,283 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:34,285 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:34,285 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:34,285 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:34,285 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:34,286 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:34,286 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:34,286 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:34,286 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:34,287 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:34,287 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:34,287 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:34,287 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 11:29:34,339 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:34,353 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:34,360 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:34,362 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:34,362 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:34,363 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_const3_true-unreach-call.c [2019-05-23 11:29:34,425 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cba2efa/48c3447e099c445880f660f43b399dc2/FLAGf88950b8c [2019-05-23 11:29:34,834 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:34,835 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_const3_true-unreach-call.c [2019-05-23 11:29:34,841 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cba2efa/48c3447e099c445880f660f43b399dc2/FLAGf88950b8c [2019-05-23 11:29:35,210 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cba2efa/48c3447e099c445880f660f43b399dc2 [2019-05-23 11:29:35,222 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:35,224 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:35,225 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:35,225 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:35,228 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:35,229 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,232 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a625f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35, skipping insertion in model container [2019-05-23 11:29:35,233 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,240 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:35,258 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:35,450 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:35,456 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:35,490 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:35,509 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:35,510 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35 WrapperNode [2019-05-23 11:29:35,510 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:35,511 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:35,511 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:35,511 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:35,518 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,526 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,547 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:35,547 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:35,548 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:35,548 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:35,555 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,555 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,558 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,558 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,565 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,657 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,659 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (1/1) ... [2019-05-23 11:29:35,663 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:35,663 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:35,664 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:35,664 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:35,665 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (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 11:29:35,722 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:29:35,722 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:35,722 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:35,722 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:35,722 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:35,723 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:36,246 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:36,246 INFO L146 ILogger]: Removed 13 assume(true) statements. [2019-05-23 11:29:36,247 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:36 BoogieIcfgContainer [2019-05-23 11:29:36,248 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:36,248 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:36,249 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:36,252 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:36,252 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:35" (1/3) ... [2019-05-23 11:29:36,253 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d941c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:36, skipping insertion in model container [2019-05-23 11:29:36,253 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:35" (2/3) ... [2019-05-23 11:29:36,254 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d941c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:36, skipping insertion in model container [2019-05-23 11:29:36,254 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:36" (3/3) ... [2019-05-23 11:29:36,255 INFO L146 ILogger]: Analyzing ICFG zero_sum_const3_true-unreach-call.c [2019-05-23 11:29:36,265 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:36,273 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:36,290 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:36,318 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:36,319 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:36,319 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:36,320 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:36,320 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:36,320 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:36,320 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:36,320 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:36,321 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:36,337 INFO L146 ILogger]: Start isEmpty. Operand 78 states. [2019-05-23 11:29:36,345 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:29:36,345 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,346 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] [2019-05-23 11:29:36,349 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,353 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,354 INFO L146 ILogger]: Analyzing trace with hash 839771596, now seen corresponding path program 1 times [2019-05-23 11:29:36,355 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,355 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,396 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,397 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:36,399 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,435 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,477 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 11:29:36,480 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:36,480 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:36,484 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:36,495 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:36,496 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:36,499 INFO L146 ILogger]: Start difference. First operand 78 states. Second operand 2 states. [2019-05-23 11:29:36,523 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:36,523 INFO L146 ILogger]: Finished difference Result 138 states and 165 transitions. [2019-05-23 11:29:36,523 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:36,524 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 31 [2019-05-23 11:29:36,525 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:36,534 INFO L146 ILogger]: With dead ends: 138 [2019-05-23 11:29:36,534 INFO L146 ILogger]: Without dead ends: 72 [2019-05-23 11:29:36,538 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:36,552 INFO L146 ILogger]: Start minimizeSevpa. Operand 72 states. [2019-05-23 11:29:36,569 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 72 to 72. [2019-05-23 11:29:36,570 INFO L146 ILogger]: Start removeUnreachable. Operand 72 states. [2019-05-23 11:29:36,574 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2019-05-23 11:29:36,575 INFO L146 ILogger]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 31 [2019-05-23 11:29:36,576 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:36,576 INFO L146 ILogger]: Abstraction has 72 states and 78 transitions. [2019-05-23 11:29:36,576 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:36,576 INFO L146 ILogger]: Start isEmpty. Operand 72 states and 78 transitions. [2019-05-23 11:29:36,580 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:29:36,580 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,580 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] [2019-05-23 11:29:36,581 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,581 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,581 INFO L146 ILogger]: Analyzing trace with hash -441291485, now seen corresponding path program 1 times [2019-05-23 11:29:36,582 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,583 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,584 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,584 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:36,585 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,628 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,805 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 11:29:36,806 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:36,806 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:36,807 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:36,808 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:36,808 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:36,809 INFO L146 ILogger]: Start difference. First operand 72 states and 78 transitions. Second operand 5 states. [2019-05-23 11:29:37,152 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:37,152 INFO L146 ILogger]: Finished difference Result 101 states and 112 transitions. [2019-05-23 11:29:37,153 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:37,153 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 31 [2019-05-23 11:29:37,154 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:37,155 INFO L146 ILogger]: With dead ends: 101 [2019-05-23 11:29:37,155 INFO L146 ILogger]: Without dead ends: 95 [2019-05-23 11:29:37,157 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:37,157 INFO L146 ILogger]: Start minimizeSevpa. Operand 95 states. [2019-05-23 11:29:37,166 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 95 to 83. [2019-05-23 11:29:37,166 INFO L146 ILogger]: Start removeUnreachable. Operand 83 states. [2019-05-23 11:29:37,167 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2019-05-23 11:29:37,168 INFO L146 ILogger]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 31 [2019-05-23 11:29:37,168 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:37,168 INFO L146 ILogger]: Abstraction has 83 states and 94 transitions. [2019-05-23 11:29:37,169 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:37,169 INFO L146 ILogger]: Start isEmpty. Operand 83 states and 94 transitions. [2019-05-23 11:29:37,170 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:29:37,171 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:37,171 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] [2019-05-23 11:29:37,171 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:37,172 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:37,172 INFO L146 ILogger]: Analyzing trace with hash 699307030, now seen corresponding path program 1 times [2019-05-23 11:29:37,172 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:37,172 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:37,173 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,173 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:37,174 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,189 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,290 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 11:29:37,290 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:37,290 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 11:29:37,303 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:37,338 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,340 INFO L146 ILogger]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:37,346 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:37,426 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 11:29:37,452 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:37,453 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:37,453 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:37,454 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:37,456 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:37,456 INFO L146 ILogger]: Start difference. First operand 83 states and 94 transitions. Second operand 7 states. [2019-05-23 11:29:38,245 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:38,245 INFO L146 ILogger]: Finished difference Result 179 states and 203 transitions. [2019-05-23 11:29:38,247 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:38,247 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 38 [2019-05-23 11:29:38,247 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:38,249 INFO L146 ILogger]: With dead ends: 179 [2019-05-23 11:29:38,251 INFO L146 ILogger]: Without dead ends: 114 [2019-05-23 11:29:38,252 INFO L146 ILogger]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:38,252 INFO L146 ILogger]: Start minimizeSevpa. Operand 114 states. [2019-05-23 11:29:38,266 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 114 to 86. [2019-05-23 11:29:38,266 INFO L146 ILogger]: Start removeUnreachable. Operand 86 states. [2019-05-23 11:29:38,270 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2019-05-23 11:29:38,270 INFO L146 ILogger]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 38 [2019-05-23 11:29:38,270 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:38,271 INFO L146 ILogger]: Abstraction has 86 states and 92 transitions. [2019-05-23 11:29:38,271 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:38,271 INFO L146 ILogger]: Start isEmpty. Operand 86 states and 92 transitions. [2019-05-23 11:29:38,276 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:29:38,276 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:38,276 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] [2019-05-23 11:29:38,277 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:38,277 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:38,277 INFO L146 ILogger]: Analyzing trace with hash 1289203665, now seen corresponding path program 1 times [2019-05-23 11:29:38,277 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:38,277 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:38,281 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,281 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:38,281 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,305 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:38,479 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:29:38,479 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:38,479 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 11:29:38,491 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:38,531 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:38,532 INFO L146 ILogger]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:38,537 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:38,679 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:29:38,698 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:38,698 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:38,698 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:38,699 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:38,699 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:38,699 INFO L146 ILogger]: Start difference. First operand 86 states and 92 transitions. Second operand 9 states. [2019-05-23 11:29:39,244 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:39,244 INFO L146 ILogger]: Finished difference Result 186 states and 198 transitions. [2019-05-23 11:29:39,245 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:39,245 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 85 [2019-05-23 11:29:39,245 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:39,247 INFO L146 ILogger]: With dead ends: 186 [2019-05-23 11:29:39,247 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:29:39,248 INFO L146 ILogger]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:39,248 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:29:39,255 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 91. [2019-05-23 11:29:39,255 INFO L146 ILogger]: Start removeUnreachable. Operand 91 states. [2019-05-23 11:29:39,256 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2019-05-23 11:29:39,257 INFO L146 ILogger]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 85 [2019-05-23 11:29:39,257 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:39,257 INFO L146 ILogger]: Abstraction has 91 states and 97 transitions. [2019-05-23 11:29:39,257 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:39,257 INFO L146 ILogger]: Start isEmpty. Operand 91 states and 97 transitions. [2019-05-23 11:29:39,259 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 91 [2019-05-23 11:29:39,259 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:39,259 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:39,259 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:39,260 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:39,260 INFO L146 ILogger]: Analyzing trace with hash 280849821, now seen corresponding path program 2 times [2019-05-23 11:29:39,260 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:39,260 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:39,261 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:39,261 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:39,262 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:39,291 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,527 INFO L146 ILogger]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-05-23 11:29:39,528 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:39,528 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 11:29:39,540 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:39,593 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:39,593 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,594 INFO L146 ILogger]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:39,598 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:39,741 INFO L146 ILogger]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-05-23 11:29:39,761 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:39,762 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:39,762 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:39,763 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:39,763 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:39,763 INFO L146 ILogger]: Start difference. First operand 91 states and 97 transitions. Second operand 9 states. [2019-05-23 11:29:40,273 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:40,273 INFO L146 ILogger]: Finished difference Result 181 states and 192 transitions. [2019-05-23 11:29:40,274 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:40,274 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 90 [2019-05-23 11:29:40,274 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:40,276 INFO L146 ILogger]: With dead ends: 181 [2019-05-23 11:29:40,276 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:29:40,278 INFO L146 ILogger]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:40,279 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:29:40,285 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 98. [2019-05-23 11:29:40,285 INFO L146 ILogger]: Start removeUnreachable. Operand 98 states. [2019-05-23 11:29:40,286 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2019-05-23 11:29:40,286 INFO L146 ILogger]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 90 [2019-05-23 11:29:40,286 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:40,286 INFO L146 ILogger]: Abstraction has 98 states and 104 transitions. [2019-05-23 11:29:40,287 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:40,287 INFO L146 ILogger]: Start isEmpty. Operand 98 states and 104 transitions. [2019-05-23 11:29:40,288 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 98 [2019-05-23 11:29:40,288 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:40,289 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:40,289 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:40,289 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:40,289 INFO L146 ILogger]: Analyzing trace with hash -2369707, now seen corresponding path program 3 times [2019-05-23 11:29:40,289 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:40,290 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:40,290 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:40,290 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:40,291 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:40,310 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:40,435 INFO L146 ILogger]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:29:40,436 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:40,436 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 11:29:40,447 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:40,481 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:29:40,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:40,483 INFO L146 ILogger]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:40,486 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:40,574 INFO L146 ILogger]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:29:40,594 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:40,594 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:40,594 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:40,595 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:40,595 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:40,595 INFO L146 ILogger]: Start difference. First operand 98 states and 104 transitions. Second operand 9 states. [2019-05-23 11:29:40,906 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:40,906 INFO L146 ILogger]: Finished difference Result 181 states and 192 transitions. [2019-05-23 11:29:40,907 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:29:40,907 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 97 [2019-05-23 11:29:40,908 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:40,909 INFO L146 ILogger]: With dead ends: 181 [2019-05-23 11:29:40,909 INFO L146 ILogger]: Without dead ends: 132 [2019-05-23 11:29:40,911 INFO L146 ILogger]: 0 DeclaredPredicates, 107 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:29:40,912 INFO L146 ILogger]: Start minimizeSevpa. Operand 132 states. [2019-05-23 11:29:40,918 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 132 to 112. [2019-05-23 11:29:40,918 INFO L146 ILogger]: Start removeUnreachable. Operand 112 states. [2019-05-23 11:29:40,919 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 112 states to 112 states and 118 transitions. [2019-05-23 11:29:40,919 INFO L146 ILogger]: Start accepts. Automaton has 112 states and 118 transitions. Word has length 97 [2019-05-23 11:29:40,919 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:40,919 INFO L146 ILogger]: Abstraction has 112 states and 118 transitions. [2019-05-23 11:29:40,920 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:40,920 INFO L146 ILogger]: Start isEmpty. Operand 112 states and 118 transitions. [2019-05-23 11:29:40,921 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 112 [2019-05-23 11:29:40,922 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:40,922 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, 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] [2019-05-23 11:29:40,922 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:40,922 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:40,923 INFO L146 ILogger]: Analyzing trace with hash 1657061710, now seen corresponding path program 4 times [2019-05-23 11:29:40,923 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:40,923 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:40,924 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:40,924 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:40,924 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:40,944 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:41,205 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-05-23 11:29:41,206 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:41,206 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 11:29:41,221 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:41,280 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:41,280 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:41,281 INFO L146 ILogger]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:41,285 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:41,728 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-05-23 11:29:41,746 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:41,746 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:41,747 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:41,747 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:41,747 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:41,748 INFO L146 ILogger]: Start difference. First operand 112 states and 118 transitions. Second operand 9 states. [2019-05-23 11:29:41,980 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:41,981 INFO L146 ILogger]: Finished difference Result 176 states and 185 transitions. [2019-05-23 11:29:41,981 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:41,981 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 111 [2019-05-23 11:29:41,982 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:41,983 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:29:41,983 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:29:41,984 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:41,985 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:29:41,990 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 119. [2019-05-23 11:29:41,990 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:29:41,991 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2019-05-23 11:29:41,991 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 111 [2019-05-23 11:29:41,992 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:41,992 INFO L146 ILogger]: Abstraction has 119 states and 125 transitions. [2019-05-23 11:29:41,992 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:41,992 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 125 transitions. [2019-05-23 11:29:41,994 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:29:41,994 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:41,994 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, 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] [2019-05-23 11:29:41,994 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:41,995 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:41,995 INFO L146 ILogger]: Analyzing trace with hash 1363749512, now seen corresponding path program 5 times [2019-05-23 11:29:41,995 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:41,995 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:41,996 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:41,996 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:41,996 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:42,014 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:42,128 INFO L146 ILogger]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-05-23 11:29:42,129 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:42,129 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 11:29:42,138 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:42,200 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:29:42,200 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:42,201 INFO L146 ILogger]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:42,204 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:42,292 INFO L146 ILogger]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-05-23 11:29:42,310 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:42,310 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:42,312 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:42,312 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:42,313 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:42,313 INFO L146 ILogger]: Start difference. First operand 119 states and 125 transitions. Second operand 9 states. [2019-05-23 11:29:42,720 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:42,721 INFO L146 ILogger]: Finished difference Result 137 states and 143 transitions. [2019-05-23 11:29:42,721 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:42,721 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 118 [2019-05-23 11:29:42,721 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:42,722 INFO L146 ILogger]: With dead ends: 137 [2019-05-23 11:29:42,722 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:29:42,723 INFO L146 ILogger]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:42,723 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:29:42,728 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 126. [2019-05-23 11:29:42,728 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:29:42,728 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2019-05-23 11:29:42,729 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 118 [2019-05-23 11:29:42,729 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:42,729 INFO L146 ILogger]: Abstraction has 126 states and 132 transitions. [2019-05-23 11:29:42,729 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:42,730 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 132 transitions. [2019-05-23 11:29:42,731 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 126 [2019-05-23 11:29:42,731 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:42,732 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, 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] [2019-05-23 11:29:42,732 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:42,732 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:42,732 INFO L146 ILogger]: Analyzing trace with hash -1252745533, now seen corresponding path program 6 times [2019-05-23 11:29:42,733 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:42,733 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:42,733 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:42,734 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:42,734 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:42,789 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:44,559 WARN L146 ILogger]: Spent 167.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2019-05-23 11:29:46,633 WARN L146 ILogger]: Spent 140.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2019-05-23 11:29:49,256 INFO L146 ILogger]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:49,256 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:49,256 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:29:49,265 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:49,299 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:29:49,299 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:49,300 INFO L146 ILogger]: Trace formula consists of 203 conjuncts, 94 conjunts are in the unsatisfiable core [2019-05-23 11:29:49,304 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:51,060 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:51,061 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:51,066 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:51,066 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:51,067 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:51,267 INFO L146 ILogger]: Checked inductivity of 61 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:29:51,286 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:51,287 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 32] total 82 [2019-05-23 11:29:51,288 INFO L146 ILogger]: Interpolant automaton has 82 states [2019-05-23 11:29:51,288 INFO L146 ILogger]: Constructing interpolant automaton starting with 82 interpolants. [2019-05-23 11:29:51,291 INFO L146 ILogger]: CoverageRelationStatistics Valid=374, Invalid=6268, Unknown=0, NotChecked=0, Total=6642 [2019-05-23 11:29:51,291 INFO L146 ILogger]: Start difference. First operand 126 states and 132 transitions. Second operand 82 states. [2019-05-23 11:29:54,004 WARN L146 ILogger]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-05-23 11:29:58,480 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2019-05-23 11:30:06,466 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:06,467 INFO L146 ILogger]: Finished difference Result 355 states and 373 transitions. [2019-05-23 11:30:06,467 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2019-05-23 11:30:06,467 INFO L146 ILogger]: Start accepts. Automaton has 82 states. Word has length 125 [2019-05-23 11:30:06,468 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:06,470 INFO L146 ILogger]: With dead ends: 355 [2019-05-23 11:30:06,471 INFO L146 ILogger]: Without dead ends: 345 [2019-05-23 11:30:06,478 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 96 SyntacticMatches, 10 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9455 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=1636, Invalid=27094, Unknown=0, NotChecked=0, Total=28730 [2019-05-23 11:30:06,479 INFO L146 ILogger]: Start minimizeSevpa. Operand 345 states. [2019-05-23 11:30:06,488 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 345 to 205. [2019-05-23 11:30:06,488 INFO L146 ILogger]: Start removeUnreachable. Operand 205 states. [2019-05-23 11:30:06,489 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 205 states to 205 states and 216 transitions. [2019-05-23 11:30:06,489 INFO L146 ILogger]: Start accepts. Automaton has 205 states and 216 transitions. Word has length 125 [2019-05-23 11:30:06,490 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:06,490 INFO L146 ILogger]: Abstraction has 205 states and 216 transitions. [2019-05-23 11:30:06,490 INFO L146 ILogger]: Interpolant automaton has 82 states. [2019-05-23 11:30:06,490 INFO L146 ILogger]: Start isEmpty. Operand 205 states and 216 transitions. [2019-05-23 11:30:06,492 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:06,492 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:06,493 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, 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] [2019-05-23 11:30:06,493 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:06,493 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:06,493 INFO L146 ILogger]: Analyzing trace with hash -1195027018, now seen corresponding path program 7 times [2019-05-23 11:30:06,494 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:06,494 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:06,495 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:06,495 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:06,495 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:06,509 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:06,752 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:06,753 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:06,753 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 11:30:06,763 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:06,804 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:06,805 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:06,808 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:07,076 INFO L146 ILogger]: Checked inductivity of 76 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:07,094 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:07,095 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:07,096 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:07,096 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:07,096 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:07,097 INFO L146 ILogger]: Start difference. First operand 205 states and 216 transitions. Second operand 20 states. [2019-05-23 11:30:07,615 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:07,615 INFO L146 ILogger]: Finished difference Result 451 states and 475 transitions. [2019-05-23 11:30:07,620 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:07,621 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 132 [2019-05-23 11:30:07,621 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:07,623 INFO L146 ILogger]: With dead ends: 451 [2019-05-23 11:30:07,623 INFO L146 ILogger]: Without dead ends: 406 [2019-05-23 11:30:07,624 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:07,625 INFO L146 ILogger]: Start minimizeSevpa. Operand 406 states. [2019-05-23 11:30:07,635 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 406 to 329. [2019-05-23 11:30:07,636 INFO L146 ILogger]: Start removeUnreachable. Operand 329 states. [2019-05-23 11:30:07,637 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 329 states to 329 states and 347 transitions. [2019-05-23 11:30:07,637 INFO L146 ILogger]: Start accepts. Automaton has 329 states and 347 transitions. Word has length 132 [2019-05-23 11:30:07,637 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:07,637 INFO L146 ILogger]: Abstraction has 329 states and 347 transitions. [2019-05-23 11:30:07,638 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:07,638 INFO L146 ILogger]: Start isEmpty. Operand 329 states and 347 transitions. [2019-05-23 11:30:07,639 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:07,639 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:07,639 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, 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] [2019-05-23 11:30:07,640 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:07,640 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:07,640 INFO L146 ILogger]: Analyzing trace with hash -1205599704, now seen corresponding path program 8 times [2019-05-23 11:30:07,640 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:07,640 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:07,641 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:07,641 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:07,641 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:07,652 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:07,857 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:30:07,858 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:07,858 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 11:30:07,867 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:07,898 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:07,898 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:07,899 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:07,901 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:08,037 INFO L146 ILogger]: Checked inductivity of 76 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:08,056 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:08,056 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:08,056 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:08,057 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:08,057 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:08,058 INFO L146 ILogger]: Start difference. First operand 329 states and 347 transitions. Second operand 21 states. [2019-05-23 11:30:08,914 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:08,915 INFO L146 ILogger]: Finished difference Result 424 states and 445 transitions. [2019-05-23 11:30:08,916 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:08,916 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 132 [2019-05-23 11:30:08,917 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:08,920 INFO L146 ILogger]: With dead ends: 424 [2019-05-23 11:30:08,920 INFO L146 ILogger]: Without dead ends: 395 [2019-05-23 11:30:08,922 INFO L146 ILogger]: 0 DeclaredPredicates, 168 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:08,922 INFO L146 ILogger]: Start minimizeSevpa. Operand 395 states. [2019-05-23 11:30:08,932 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 395 to 368. [2019-05-23 11:30:08,933 INFO L146 ILogger]: Start removeUnreachable. Operand 368 states. [2019-05-23 11:30:08,934 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 368 states to 368 states and 387 transitions. [2019-05-23 11:30:08,934 INFO L146 ILogger]: Start accepts. Automaton has 368 states and 387 transitions. Word has length 132 [2019-05-23 11:30:08,935 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:08,935 INFO L146 ILogger]: Abstraction has 368 states and 387 transitions. [2019-05-23 11:30:08,935 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:08,935 INFO L146 ILogger]: Start isEmpty. Operand 368 states and 387 transitions. [2019-05-23 11:30:08,936 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:08,936 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:08,936 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, 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] [2019-05-23 11:30:08,937 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:08,937 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:08,937 INFO L146 ILogger]: Analyzing trace with hash -682695953, now seen corresponding path program 9 times [2019-05-23 11:30:08,937 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:08,937 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:08,938 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,938 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:08,938 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,951 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,629 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:09,630 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:09,630 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 11:30:09,641 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:09,675 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:09,675 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,678 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:09,680 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:09,811 INFO L146 ILogger]: Checked inductivity of 76 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:09,838 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:09,838 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:09,839 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:09,839 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:09,839 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:09,839 INFO L146 ILogger]: Start difference. First operand 368 states and 387 transitions. Second operand 20 states. [2019-05-23 11:30:10,529 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:10,529 INFO L146 ILogger]: Finished difference Result 430 states and 448 transitions. [2019-05-23 11:30:10,530 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:10,530 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 132 [2019-05-23 11:30:10,530 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:10,533 INFO L146 ILogger]: With dead ends: 430 [2019-05-23 11:30:10,533 INFO L146 ILogger]: Without dead ends: 369 [2019-05-23 11:30:10,534 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:10,534 INFO L146 ILogger]: Start minimizeSevpa. Operand 369 states. [2019-05-23 11:30:10,543 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 369 to 336. [2019-05-23 11:30:10,543 INFO L146 ILogger]: Start removeUnreachable. Operand 336 states. [2019-05-23 11:30:10,544 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 336 states to 336 states and 353 transitions. [2019-05-23 11:30:10,544 INFO L146 ILogger]: Start accepts. Automaton has 336 states and 353 transitions. Word has length 132 [2019-05-23 11:30:10,544 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:10,544 INFO L146 ILogger]: Abstraction has 336 states and 353 transitions. [2019-05-23 11:30:10,544 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:10,545 INFO L146 ILogger]: Start isEmpty. Operand 336 states and 353 transitions. [2019-05-23 11:30:10,545 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:10,546 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:10,546 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, 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] [2019-05-23 11:30:10,546 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:10,546 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:10,546 INFO L146 ILogger]: Analyzing trace with hash 1193499261, now seen corresponding path program 10 times [2019-05-23 11:30:10,547 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:10,547 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:10,547 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:10,548 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:10,548 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:10,560 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:11,176 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:11,177 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:11,177 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 11:30:11,187 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:11,218 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:11,218 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:11,219 INFO L146 ILogger]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:11,220 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:11,340 INFO L146 ILogger]: Checked inductivity of 76 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:11,359 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:11,359 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:11,360 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:11,360 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:11,361 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:11,361 INFO L146 ILogger]: Start difference. First operand 336 states and 353 transitions. Second operand 20 states. [2019-05-23 11:30:12,195 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:12,195 INFO L146 ILogger]: Finished difference Result 430 states and 446 transitions. [2019-05-23 11:30:12,195 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:12,196 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 132 [2019-05-23 11:30:12,196 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:12,198 INFO L146 ILogger]: With dead ends: 430 [2019-05-23 11:30:12,199 INFO L146 ILogger]: Without dead ends: 353 [2019-05-23 11:30:12,202 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:12,203 INFO L146 ILogger]: Start minimizeSevpa. Operand 353 states. [2019-05-23 11:30:12,216 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 353 to 320. [2019-05-23 11:30:12,217 INFO L146 ILogger]: Start removeUnreachable. Operand 320 states. [2019-05-23 11:30:12,218 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 320 states to 320 states and 335 transitions. [2019-05-23 11:30:12,219 INFO L146 ILogger]: Start accepts. Automaton has 320 states and 335 transitions. Word has length 132 [2019-05-23 11:30:12,219 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:12,219 INFO L146 ILogger]: Abstraction has 320 states and 335 transitions. [2019-05-23 11:30:12,219 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:12,219 INFO L146 ILogger]: Start isEmpty. Operand 320 states and 335 transitions. [2019-05-23 11:30:12,221 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:12,221 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:12,222 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, 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] [2019-05-23 11:30:12,222 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:12,222 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:12,223 INFO L146 ILogger]: Analyzing trace with hash -1257967292, now seen corresponding path program 11 times [2019-05-23 11:30:12,223 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:12,223 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:12,224 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:12,224 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:12,224 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:12,241 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,655 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:12,655 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:12,655 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 11:30:12,681 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:12,724 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:12,724 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,725 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:12,727 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:12,896 INFO L146 ILogger]: Checked inductivity of 76 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:30:12,915 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:12,915 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:12,915 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:12,915 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:12,916 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:12,916 INFO L146 ILogger]: Start difference. First operand 320 states and 335 transitions. Second operand 24 states. [2019-05-23 11:30:15,185 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:15,185 INFO L146 ILogger]: Finished difference Result 597 states and 621 transitions. [2019-05-23 11:30:15,186 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:30:15,186 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 132 [2019-05-23 11:30:15,186 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:15,189 INFO L146 ILogger]: With dead ends: 597 [2019-05-23 11:30:15,189 INFO L146 ILogger]: Without dead ends: 449 [2019-05-23 11:30:15,191 INFO L146 ILogger]: 0 DeclaredPredicates, 173 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:30:15,191 INFO L146 ILogger]: Start minimizeSevpa. Operand 449 states. [2019-05-23 11:30:15,202 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 449 to 327. [2019-05-23 11:30:15,202 INFO L146 ILogger]: Start removeUnreachable. Operand 327 states. [2019-05-23 11:30:15,203 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 327 states to 327 states and 341 transitions. [2019-05-23 11:30:15,203 INFO L146 ILogger]: Start accepts. Automaton has 327 states and 341 transitions. Word has length 132 [2019-05-23 11:30:15,203 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:15,203 INFO L146 ILogger]: Abstraction has 327 states and 341 transitions. [2019-05-23 11:30:15,204 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:15,204 INFO L146 ILogger]: Start isEmpty. Operand 327 states and 341 transitions. [2019-05-23 11:30:15,205 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:15,205 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:15,205 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, 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] [2019-05-23 11:30:15,205 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:15,206 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:15,206 INFO L146 ILogger]: Analyzing trace with hash 2097551883, now seen corresponding path program 12 times [2019-05-23 11:30:15,206 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:15,206 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:15,207 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,207 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:15,207 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,217 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:15,362 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:15,362 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:15,362 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 11:30:15,371 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:15,412 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:15,412 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:15,413 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:15,416 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:15,575 INFO L146 ILogger]: Checked inductivity of 76 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:30:15,594 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:15,595 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:15,595 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:15,596 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:15,596 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:15,596 INFO L146 ILogger]: Start difference. First operand 327 states and 341 transitions. Second operand 24 states. [2019-05-23 11:30:16,746 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:16,746 INFO L146 ILogger]: Finished difference Result 534 states and 557 transitions. [2019-05-23 11:30:16,747 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:30:16,747 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 132 [2019-05-23 11:30:16,748 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:16,750 INFO L146 ILogger]: With dead ends: 534 [2019-05-23 11:30:16,750 INFO L146 ILogger]: Without dead ends: 370 [2019-05-23 11:30:16,751 INFO L146 ILogger]: 0 DeclaredPredicates, 169 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=309, Invalid=2043, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:30:16,752 INFO L146 ILogger]: Start minimizeSevpa. Operand 370 states. [2019-05-23 11:30:16,760 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 370 to 232. [2019-05-23 11:30:16,760 INFO L146 ILogger]: Start removeUnreachable. Operand 232 states. [2019-05-23 11:30:16,761 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 232 states to 232 states and 243 transitions. [2019-05-23 11:30:16,761 INFO L146 ILogger]: Start accepts. Automaton has 232 states and 243 transitions. Word has length 132 [2019-05-23 11:30:16,761 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:16,761 INFO L146 ILogger]: Abstraction has 232 states and 243 transitions. [2019-05-23 11:30:16,761 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:16,762 INFO L146 ILogger]: Start isEmpty. Operand 232 states and 243 transitions. [2019-05-23 11:30:16,762 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:30:16,762 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:16,763 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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, 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] [2019-05-23 11:30:16,763 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:16,763 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:16,763 INFO L146 ILogger]: Analyzing trace with hash 154859114, now seen corresponding path program 13 times [2019-05-23 11:30:16,764 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:16,764 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:16,764 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,764 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:16,765 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,776 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:16,927 INFO L146 ILogger]: Checked inductivity of 87 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:30:16,927 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:16,928 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 11:30:16,937 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:16,964 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:16,964 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:16,966 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:17,080 INFO L146 ILogger]: Checked inductivity of 87 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:30:17,099 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:17,099 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:17,100 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:17,100 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:17,100 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:17,100 INFO L146 ILogger]: Start difference. First operand 232 states and 243 transitions. Second operand 20 states. [2019-05-23 11:30:17,772 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:17,773 INFO L146 ILogger]: Finished difference Result 344 states and 360 transitions. [2019-05-23 11:30:17,773 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:17,773 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 137 [2019-05-23 11:30:17,773 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:17,775 INFO L146 ILogger]: With dead ends: 344 [2019-05-23 11:30:17,775 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:30:17,776 INFO L146 ILogger]: 0 DeclaredPredicates, 165 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:17,777 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:30:17,781 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 168. [2019-05-23 11:30:17,781 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:30:17,782 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 175 transitions. [2019-05-23 11:30:17,782 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 175 transitions. Word has length 137 [2019-05-23 11:30:17,782 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:17,782 INFO L146 ILogger]: Abstraction has 168 states and 175 transitions. [2019-05-23 11:30:17,782 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:17,782 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 175 transitions. [2019-05-23 11:30:17,783 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:30:17,783 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:17,784 INFO L146 ILogger]: trace histogram [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, 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] [2019-05-23 11:30:17,784 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:17,784 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:17,784 INFO L146 ILogger]: Analyzing trace with hash 109054721, now seen corresponding path program 14 times [2019-05-23 11:30:17,784 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:17,785 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:17,785 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:17,785 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:17,786 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:17,797 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,052 INFO L146 ILogger]: Checked inductivity of 102 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:30:18,052 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:18,052 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 11:30:18,061 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:18,097 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:18,098 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,098 INFO L146 ILogger]: Trace formula consists of 232 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:18,100 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:18,205 INFO L146 ILogger]: Checked inductivity of 102 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:30:18,223 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:18,224 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:18,224 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:18,224 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:18,225 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:18,225 INFO L146 ILogger]: Start difference. First operand 168 states and 175 transitions. Second operand 20 states. [2019-05-23 11:30:18,772 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:18,773 INFO L146 ILogger]: Finished difference Result 280 states and 292 transitions. [2019-05-23 11:30:18,774 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:18,774 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 144 [2019-05-23 11:30:18,775 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:18,776 INFO L146 ILogger]: With dead ends: 280 [2019-05-23 11:30:18,776 INFO L146 ILogger]: Without dead ends: 180 [2019-05-23 11:30:18,777 INFO L146 ILogger]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:18,777 INFO L146 ILogger]: Start minimizeSevpa. Operand 180 states. [2019-05-23 11:30:18,782 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 180 to 175. [2019-05-23 11:30:18,782 INFO L146 ILogger]: Start removeUnreachable. Operand 175 states. [2019-05-23 11:30:18,783 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2019-05-23 11:30:18,783 INFO L146 ILogger]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 144 [2019-05-23 11:30:18,783 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:18,783 INFO L146 ILogger]: Abstraction has 175 states and 182 transitions. [2019-05-23 11:30:18,783 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:18,784 INFO L146 ILogger]: Start isEmpty. Operand 175 states and 182 transitions. [2019-05-23 11:30:18,784 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:30:18,784 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:18,785 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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, 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] [2019-05-23 11:30:18,785 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:18,785 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:18,785 INFO L146 ILogger]: Analyzing trace with hash -1704798248, now seen corresponding path program 15 times [2019-05-23 11:30:18,785 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:18,786 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:18,786 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:18,786 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:18,787 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:18,799 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:19,220 INFO L146 ILogger]: Checked inductivity of 117 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-05-23 11:30:19,221 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:19,221 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 11:30:19,231 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:19,269 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:19,270 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:19,270 INFO L146 ILogger]: Trace formula consists of 243 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:19,273 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:19,492 INFO L146 ILogger]: Checked inductivity of 117 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-05-23 11:30:19,511 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:19,511 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:19,511 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:19,512 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:19,512 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:19,512 INFO L146 ILogger]: Start difference. First operand 175 states and 182 transitions. Second operand 20 states. [2019-05-23 11:30:20,148 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:20,148 INFO L146 ILogger]: Finished difference Result 232 states and 242 transitions. [2019-05-23 11:30:20,155 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:30:20,155 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 151 [2019-05-23 11:30:20,155 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:20,156 INFO L146 ILogger]: With dead ends: 232 [2019-05-23 11:30:20,156 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:30:20,157 INFO L146 ILogger]: 0 DeclaredPredicates, 183 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:30:20,157 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:30:20,161 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 166. [2019-05-23 11:30:20,161 INFO L146 ILogger]: Start removeUnreachable. Operand 166 states. [2019-05-23 11:30:20,162 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2019-05-23 11:30:20,162 INFO L146 ILogger]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 151 [2019-05-23 11:30:20,162 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:20,162 INFO L146 ILogger]: Abstraction has 166 states and 172 transitions. [2019-05-23 11:30:20,162 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:20,163 INFO L146 ILogger]: Start isEmpty. Operand 166 states and 172 transitions. [2019-05-23 11:30:20,163 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:30:20,163 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:20,164 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:30:20,164 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:20,164 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:20,164 INFO L146 ILogger]: Analyzing trace with hash -189188879, now seen corresponding path program 16 times [2019-05-23 11:30:20,164 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:20,165 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:20,165 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:20,165 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:20,165 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:20,177 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:20,484 INFO L146 ILogger]: Checked inductivity of 147 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-05-23 11:30:20,484 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:20,484 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 11:30:20,494 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:20,528 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:20,528 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:20,529 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:20,531 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:20,652 INFO L146 ILogger]: Checked inductivity of 147 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-05-23 11:30:20,670 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:20,671 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:20,671 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:20,672 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:20,672 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:20,672 INFO L146 ILogger]: Start difference. First operand 166 states and 172 transitions. Second operand 20 states. [2019-05-23 11:30:21,209 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:21,209 INFO L146 ILogger]: Finished difference Result 184 states and 190 transitions. [2019-05-23 11:30:21,209 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:21,210 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 165 [2019-05-23 11:30:21,210 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:21,211 INFO L146 ILogger]: With dead ends: 184 [2019-05-23 11:30:21,211 INFO L146 ILogger]: Without dead ends: 178 [2019-05-23 11:30:21,212 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:21,213 INFO L146 ILogger]: Start minimizeSevpa. Operand 178 states. [2019-05-23 11:30:21,215 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 178 to 173. [2019-05-23 11:30:21,216 INFO L146 ILogger]: Start removeUnreachable. Operand 173 states. [2019-05-23 11:30:21,216 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 173 states to 173 states and 179 transitions. [2019-05-23 11:30:21,216 INFO L146 ILogger]: Start accepts. Automaton has 173 states and 179 transitions. Word has length 165 [2019-05-23 11:30:21,216 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:21,216 INFO L146 ILogger]: Abstraction has 173 states and 179 transitions. [2019-05-23 11:30:21,216 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:21,217 INFO L146 ILogger]: Start isEmpty. Operand 173 states and 179 transitions. [2019-05-23 11:30:21,217 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 173 [2019-05-23 11:30:21,217 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:21,217 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:21,218 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:21,218 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:21,218 INFO L146 ILogger]: Analyzing trace with hash -1157579718, now seen corresponding path program 17 times [2019-05-23 11:30:21,218 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:21,218 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:21,218 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:21,219 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:21,219 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:21,249 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:27,236 INFO L146 ILogger]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:27,236 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:27,236 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 11:30:27,244 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:27,295 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:27,295 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:27,298 WARN L146 ILogger]: Trace formula consists of 276 conjuncts, 153 conjunts are in the unsatisfiable core [2019-05-23 11:30:27,301 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:27,485 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:30:27,485 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:27,494 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:27,495 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:30:27,495 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2019-05-23 11:30:33,876 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:30:33,878 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:33,878 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 13 [2019-05-23 11:30:33,879 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:33,884 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:33,884 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:33,885 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:7 [2019-05-23 11:30:34,237 INFO L146 ILogger]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:34,257 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:34,258 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 54] total 106 [2019-05-23 11:30:34,258 INFO L146 ILogger]: Interpolant automaton has 106 states [2019-05-23 11:30:34,258 INFO L146 ILogger]: Constructing interpolant automaton starting with 106 interpolants. [2019-05-23 11:30:34,261 INFO L146 ILogger]: CoverageRelationStatistics Valid=443, Invalid=10687, Unknown=0, NotChecked=0, Total=11130 [2019-05-23 11:30:34,261 INFO L146 ILogger]: Start difference. First operand 173 states and 179 transitions. Second operand 106 states.