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-examples/standard_init3_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:18:00,219 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:18:00,221 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:18:00,233 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:18:00,234 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:18:00,235 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:18:00,236 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:18:00,238 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:18:00,240 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:18:00,241 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:18:00,242 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:18:00,242 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:18:00,243 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:18:00,245 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:18:00,246 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:18:00,247 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:18:00,248 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:18:00,250 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:18:00,252 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:18:00,254 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:18:00,255 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:18:00,257 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:18:00,259 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:18:00,259 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:18:00,260 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:18:00,261 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:18:00,261 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:18:00,262 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:18:00,263 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:18:00,264 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:18:00,264 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:18:00,265 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:18:00,267 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:18:00,267 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:18:00,268 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:18:00,268 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:18:00,268 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:18:00,269 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:18:00,270 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:18:00,270 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:18:00,286 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:18:00,286 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:18:00,287 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:18:00,288 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:18:00,288 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:18:00,288 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:18:00,288 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:18:00,289 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:18:00,289 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:18:00,289 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:18:00,289 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:18:00,290 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:18:00,290 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:18:00,290 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:18:00,290 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:18:00,290 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:18:00,291 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:18:00,291 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:18:00,291 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:18:00,291 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:18:00,292 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:18:00,292 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:18:00,292 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:18:00,292 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:18:00,292 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:18:00,293 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:18:00,293 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:18:00,293 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:18:00,293 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 11:18:00,333 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:18:00,350 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:18:00,357 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:18:00,359 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:18:00,359 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:18:00,360 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_init3_true-unreach-call_ground.i [2019-05-23 11:18:00,424 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ccd65cdb/afed5f4a4dbc4d4e9038c5fe478dc659/FLAGad38ee45e [2019-05-23 11:18:00,879 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:18:00,880 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_init3_true-unreach-call_ground.i [2019-05-23 11:18:00,886 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ccd65cdb/afed5f4a4dbc4d4e9038c5fe478dc659/FLAGad38ee45e [2019-05-23 11:18:01,252 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ccd65cdb/afed5f4a4dbc4d4e9038c5fe478dc659 [2019-05-23 11:18:01,262 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:18:01,264 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:18:01,265 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:18:01,265 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:18:01,268 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:18:01,269 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,272 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657b6dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01, skipping insertion in model container [2019-05-23 11:18:01,272 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,280 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:18:01,301 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:18:01,490 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:18:01,494 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:18:01,517 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:18:01,538 INFO L146 ILogger]: Completed translation [2019-05-23 11:18:01,538 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01 WrapperNode [2019-05-23 11:18:01,539 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:18:01,540 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:18:01,540 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:18:01,540 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:18:01,549 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,558 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,584 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:18:01,584 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:18:01,584 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:18:01,585 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:18:01,595 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,595 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,597 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,597 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,605 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,611 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,612 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (1/1) ... [2019-05-23 11:18:01,616 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:18:01,616 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:18:01,616 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:18:01,616 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:18:01,619 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (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 11:18:01,775 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:18:01,775 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:18:01,776 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:18:01,776 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:18:01,776 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:18:01,776 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:18:02,276 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:18:02,276 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:18:02,277 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:18:02 BoogieIcfgContainer [2019-05-23 11:18:02,278 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:18:02,278 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:18:02,279 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:18:02,283 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:18:02,283 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:18:01" (1/3) ... [2019-05-23 11:18:02,284 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685c7c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:18:02, skipping insertion in model container [2019-05-23 11:18:02,284 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:01" (2/3) ... [2019-05-23 11:18:02,284 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685c7c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:18:02, skipping insertion in model container [2019-05-23 11:18:02,285 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:18:02" (3/3) ... [2019-05-23 11:18:02,287 INFO L146 ILogger]: Analyzing ICFG standard_init3_true-unreach-call_ground.i [2019-05-23 11:18:02,295 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:18:02,303 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:18:02,320 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:18:02,350 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:18:02,350 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:18:02,351 INFO L146 ILogger]: Hoare is true [2019-05-23 11:18:02,351 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:18:02,351 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:18:02,351 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:18:02,351 INFO L146 ILogger]: Difference is false [2019-05-23 11:18:02,352 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:18:02,352 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:18:02,366 INFO L146 ILogger]: Start isEmpty. Operand 37 states. [2019-05-23 11:18:02,373 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:18:02,373 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:02,374 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] [2019-05-23 11:18:02,376 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:02,381 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:02,381 INFO L146 ILogger]: Analyzing trace with hash 1855426934, now seen corresponding path program 1 times [2019-05-23 11:18:02,383 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:02,384 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:02,424 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,425 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:02,425 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,458 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,497 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 11:18:02,499 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:18:02,500 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:18:02,504 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:18:02,517 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:18:02,518 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:18:02,523 INFO L146 ILogger]: Start difference. First operand 37 states. Second operand 2 states. [2019-05-23 11:18:02,540 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:02,540 INFO L146 ILogger]: Finished difference Result 65 states and 79 transitions. [2019-05-23 11:18:02,540 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:18:02,542 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 20 [2019-05-23 11:18:02,542 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:02,552 INFO L146 ILogger]: With dead ends: 65 [2019-05-23 11:18:02,552 INFO L146 ILogger]: Without dead ends: 31 [2019-05-23 11:18:02,556 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 11:18:02,571 INFO L146 ILogger]: Start minimizeSevpa. Operand 31 states. [2019-05-23 11:18:02,585 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-05-23 11:18:02,586 INFO L146 ILogger]: Start removeUnreachable. Operand 31 states. [2019-05-23 11:18:02,587 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-05-23 11:18:02,589 INFO L146 ILogger]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2019-05-23 11:18:02,590 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:02,590 INFO L146 ILogger]: Abstraction has 31 states and 34 transitions. [2019-05-23 11:18:02,590 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:18:02,590 INFO L146 ILogger]: Start isEmpty. Operand 31 states and 34 transitions. [2019-05-23 11:18:02,591 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:18:02,591 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:02,591 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] [2019-05-23 11:18:02,592 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:02,592 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:02,592 INFO L146 ILogger]: Analyzing trace with hash 998396104, now seen corresponding path program 1 times [2019-05-23 11:18:02,592 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:02,593 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:02,594 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,594 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:02,594 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,606 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,687 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 11:18:02,687 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:18:02,687 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:18:02,689 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:18:02,689 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:18:02,690 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:18:02,690 INFO L146 ILogger]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2019-05-23 11:18:02,929 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:02,929 INFO L146 ILogger]: Finished difference Result 62 states and 70 transitions. [2019-05-23 11:18:02,933 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:18:02,933 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 20 [2019-05-23 11:18:02,933 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:02,934 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:18:02,934 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:18:02,936 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:18:02,937 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:18:02,941 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 34. [2019-05-23 11:18:02,941 INFO L146 ILogger]: Start removeUnreachable. Operand 34 states. [2019-05-23 11:18:02,942 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-05-23 11:18:02,942 INFO L146 ILogger]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2019-05-23 11:18:02,942 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:02,943 INFO L146 ILogger]: Abstraction has 34 states and 37 transitions. [2019-05-23 11:18:02,943 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:18:02,943 INFO L146 ILogger]: Start isEmpty. Operand 34 states and 37 transitions. [2019-05-23 11:18:02,944 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:18:02,944 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:02,944 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] [2019-05-23 11:18:02,945 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:02,945 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:02,945 INFO L146 ILogger]: Analyzing trace with hash 348107599, now seen corresponding path program 1 times [2019-05-23 11:18:02,945 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:02,945 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:02,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,947 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:02,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,979 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,071 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:18:03,071 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:03,071 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 11:18:03,090 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:03,120 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,122 INFO L146 ILogger]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:18:03,128 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:03,197 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:18:03,218 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:03,219 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:18:03,219 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:18:03,220 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:18:03,221 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:18:03,221 INFO L146 ILogger]: Start difference. First operand 34 states and 37 transitions. Second operand 5 states. [2019-05-23 11:18:03,526 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:03,527 INFO L146 ILogger]: Finished difference Result 73 states and 81 transitions. [2019-05-23 11:18:03,528 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:18:03,528 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 29 [2019-05-23 11:18:03,528 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:03,529 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:18:03,529 INFO L146 ILogger]: Without dead ends: 49 [2019-05-23 11:18:03,530 INFO L146 ILogger]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:18:03,531 INFO L146 ILogger]: Start minimizeSevpa. Operand 49 states. [2019-05-23 11:18:03,535 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 49 to 43. [2019-05-23 11:18:03,535 INFO L146 ILogger]: Start removeUnreachable. Operand 43 states. [2019-05-23 11:18:03,536 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-05-23 11:18:03,536 INFO L146 ILogger]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 29 [2019-05-23 11:18:03,537 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:03,537 INFO L146 ILogger]: Abstraction has 43 states and 46 transitions. [2019-05-23 11:18:03,537 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:18:03,537 INFO L146 ILogger]: Start isEmpty. Operand 43 states and 46 transitions. [2019-05-23 11:18:03,538 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:18:03,538 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:03,538 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:18:03,539 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:03,539 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:03,539 INFO L146 ILogger]: Analyzing trace with hash 1409560744, now seen corresponding path program 2 times [2019-05-23 11:18:03,539 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:03,540 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:03,541 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:03,541 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:03,541 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:03,561 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,653 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:18:03,654 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:03,654 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 11:18:03,673 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:03,720 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:03,720 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,721 INFO L146 ILogger]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:18:03,725 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:03,746 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:18:03,767 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:03,767 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:18:03,767 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:18:03,768 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:18:03,768 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:18:03,768 INFO L146 ILogger]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2019-05-23 11:18:04,042 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:04,043 INFO L146 ILogger]: Finished difference Result 88 states and 96 transitions. [2019-05-23 11:18:04,044 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:18:04,044 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 38 [2019-05-23 11:18:04,044 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:04,045 INFO L146 ILogger]: With dead ends: 88 [2019-05-23 11:18:04,046 INFO L146 ILogger]: Without dead ends: 58 [2019-05-23 11:18:04,046 INFO L146 ILogger]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:18:04,047 INFO L146 ILogger]: Start minimizeSevpa. Operand 58 states. [2019-05-23 11:18:04,052 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 58 to 52. [2019-05-23 11:18:04,052 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:18:04,053 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2019-05-23 11:18:04,054 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 38 [2019-05-23 11:18:04,054 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:04,054 INFO L146 ILogger]: Abstraction has 52 states and 55 transitions. [2019-05-23 11:18:04,054 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:18:04,055 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 55 transitions. [2019-05-23 11:18:04,056 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:18:04,056 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:04,056 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:18:04,056 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:04,057 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:04,057 INFO L146 ILogger]: Analyzing trace with hash -1769296401, now seen corresponding path program 3 times [2019-05-23 11:18:04,057 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:04,057 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:04,058 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,058 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:04,059 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,083 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,199 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:18:04,199 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:04,199 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 11:18:04,228 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:04,268 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:18:04,269 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,270 INFO L146 ILogger]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:18:04,272 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:04,307 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:18:04,338 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:04,338 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:18:04,339 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:18:04,339 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:18:04,339 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:18:04,340 INFO L146 ILogger]: Start difference. First operand 52 states and 55 transitions. Second operand 7 states. [2019-05-23 11:18:04,768 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:04,768 INFO L146 ILogger]: Finished difference Result 103 states and 111 transitions. [2019-05-23 11:18:04,772 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:18:04,772 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 47 [2019-05-23 11:18:04,773 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:04,773 INFO L146 ILogger]: With dead ends: 103 [2019-05-23 11:18:04,774 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:18:04,774 INFO L146 ILogger]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:18:04,775 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:18:04,779 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 61. [2019-05-23 11:18:04,780 INFO L146 ILogger]: Start removeUnreachable. Operand 61 states. [2019-05-23 11:18:04,781 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2019-05-23 11:18:04,781 INFO L146 ILogger]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 47 [2019-05-23 11:18:04,781 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:04,781 INFO L146 ILogger]: Abstraction has 61 states and 64 transitions. [2019-05-23 11:18:04,781 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:18:04,781 INFO L146 ILogger]: Start isEmpty. Operand 61 states and 64 transitions. [2019-05-23 11:18:04,783 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 57 [2019-05-23 11:18:04,783 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:04,783 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:04,784 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:04,784 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:04,784 INFO L146 ILogger]: Analyzing trace with hash 735492232, now seen corresponding path program 4 times [2019-05-23 11:18:04,784 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:04,784 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:04,785 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,786 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:04,786 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,916 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-05-23 11:18:04,916 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:04,916 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 11:18:04,925 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:04,964 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:04,964 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,965 INFO L146 ILogger]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:04,968 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:04,995 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-05-23 11:18:05,013 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:05,014 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:18:05,014 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:18:05,014 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:18:05,015 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:18:05,015 INFO L146 ILogger]: Start difference. First operand 61 states and 64 transitions. Second operand 8 states. [2019-05-23 11:18:05,460 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:05,460 INFO L146 ILogger]: Finished difference Result 118 states and 126 transitions. [2019-05-23 11:18:05,461 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:18:05,461 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 56 [2019-05-23 11:18:05,461 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:05,462 INFO L146 ILogger]: With dead ends: 118 [2019-05-23 11:18:05,462 INFO L146 ILogger]: Without dead ends: 76 [2019-05-23 11:18:05,463 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:18:05,463 INFO L146 ILogger]: Start minimizeSevpa. Operand 76 states. [2019-05-23 11:18:05,468 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 76 to 70. [2019-05-23 11:18:05,468 INFO L146 ILogger]: Start removeUnreachable. Operand 70 states. [2019-05-23 11:18:05,469 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2019-05-23 11:18:05,469 INFO L146 ILogger]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 56 [2019-05-23 11:18:05,470 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:05,470 INFO L146 ILogger]: Abstraction has 70 states and 73 transitions. [2019-05-23 11:18:05,470 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:18:05,470 INFO L146 ILogger]: Start isEmpty. Operand 70 states and 73 transitions. [2019-05-23 11:18:05,471 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 66 [2019-05-23 11:18:05,471 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:05,472 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:05,472 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:05,472 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:05,472 INFO L146 ILogger]: Analyzing trace with hash -1301397361, now seen corresponding path program 5 times [2019-05-23 11:18:05,472 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:05,472 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:05,473 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:05,473 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:05,474 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:05,529 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,630 INFO L146 ILogger]: Checked inductivity of 105 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:18:05,631 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:05,631 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 11:18:05,640 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:05,813 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:18:05,813 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,814 INFO L146 ILogger]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:18:05,817 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:05,842 INFO L146 ILogger]: Checked inductivity of 105 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:18:05,862 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:05,862 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:18:05,862 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:18:05,863 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:18:05,863 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:18:05,863 INFO L146 ILogger]: Start difference. First operand 70 states and 73 transitions. Second operand 9 states. [2019-05-23 11:18:06,105 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:06,105 INFO L146 ILogger]: Finished difference Result 133 states and 141 transitions. [2019-05-23 11:18:06,106 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:18:06,106 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 65 [2019-05-23 11:18:06,106 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:06,107 INFO L146 ILogger]: With dead ends: 133 [2019-05-23 11:18:06,107 INFO L146 ILogger]: Without dead ends: 85 [2019-05-23 11:18:06,108 INFO L146 ILogger]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:18:06,109 INFO L146 ILogger]: Start minimizeSevpa. Operand 85 states. [2019-05-23 11:18:06,116 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 85 to 79. [2019-05-23 11:18:06,116 INFO L146 ILogger]: Start removeUnreachable. Operand 79 states. [2019-05-23 11:18:06,117 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2019-05-23 11:18:06,117 INFO L146 ILogger]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 65 [2019-05-23 11:18:06,118 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:06,118 INFO L146 ILogger]: Abstraction has 79 states and 82 transitions. [2019-05-23 11:18:06,118 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:18:06,118 INFO L146 ILogger]: Start isEmpty. Operand 79 states and 82 transitions. [2019-05-23 11:18:06,119 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:18:06,120 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:06,120 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:06,120 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:06,120 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:06,121 INFO L146 ILogger]: Analyzing trace with hash 2137253992, now seen corresponding path program 6 times [2019-05-23 11:18:06,121 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:06,121 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:06,122 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,122 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:06,122 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:06,350 INFO L146 ILogger]: Checked inductivity of 153 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-05-23 11:18:06,351 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:06,351 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 11:18:06,361 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:06,768 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:18:06,768 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:06,770 INFO L146 ILogger]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:18:06,773 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:06,835 INFO L146 ILogger]: Checked inductivity of 153 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-05-23 11:18:06,861 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:06,861 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:18:06,861 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:18:06,862 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:18:06,862 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:18:06,862 INFO L146 ILogger]: Start difference. First operand 79 states and 82 transitions. Second operand 10 states. [2019-05-23 11:18:07,071 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:07,071 INFO L146 ILogger]: Finished difference Result 148 states and 156 transitions. [2019-05-23 11:18:07,072 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:18:07,072 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 74 [2019-05-23 11:18:07,072 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:07,074 INFO L146 ILogger]: With dead ends: 148 [2019-05-23 11:18:07,074 INFO L146 ILogger]: Without dead ends: 94 [2019-05-23 11:18:07,075 INFO L146 ILogger]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:18:07,076 INFO L146 ILogger]: Start minimizeSevpa. Operand 94 states. [2019-05-23 11:18:07,081 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 94 to 88. [2019-05-23 11:18:07,081 INFO L146 ILogger]: Start removeUnreachable. Operand 88 states. [2019-05-23 11:18:07,082 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2019-05-23 11:18:07,082 INFO L146 ILogger]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 74 [2019-05-23 11:18:07,083 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:07,083 INFO L146 ILogger]: Abstraction has 88 states and 91 transitions. [2019-05-23 11:18:07,083 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:18:07,083 INFO L146 ILogger]: Start isEmpty. Operand 88 states and 91 transitions. [2019-05-23 11:18:07,084 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 84 [2019-05-23 11:18:07,084 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:07,084 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:07,085 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:07,085 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:07,085 INFO L146 ILogger]: Analyzing trace with hash -496997585, now seen corresponding path program 7 times [2019-05-23 11:18:07,085 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:07,086 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:07,086 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:07,087 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:07,087 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:07,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,265 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2019-05-23 11:18:07,265 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:07,266 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 11:18:07,277 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:07,300 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,301 INFO L146 ILogger]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:18:07,305 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:07,335 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2019-05-23 11:18:07,356 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:07,356 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:18:07,356 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:18:07,357 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:18:07,357 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:18:07,357 INFO L146 ILogger]: Start difference. First operand 88 states and 91 transitions. Second operand 11 states. [2019-05-23 11:18:07,600 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:07,600 INFO L146 ILogger]: Finished difference Result 163 states and 171 transitions. [2019-05-23 11:18:07,601 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:18:07,602 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 83 [2019-05-23 11:18:07,602 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:07,603 INFO L146 ILogger]: With dead ends: 163 [2019-05-23 11:18:07,604 INFO L146 ILogger]: Without dead ends: 103 [2019-05-23 11:18:07,604 INFO L146 ILogger]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:18:07,605 INFO L146 ILogger]: Start minimizeSevpa. Operand 103 states. [2019-05-23 11:18:07,610 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 103 to 97. [2019-05-23 11:18:07,610 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:18:07,611 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2019-05-23 11:18:07,611 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 83 [2019-05-23 11:18:07,611 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:07,612 INFO L146 ILogger]: Abstraction has 97 states and 100 transitions. [2019-05-23 11:18:07,612 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:18:07,612 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 100 transitions. [2019-05-23 11:18:07,613 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:18:07,613 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:07,613 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:07,614 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:07,614 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:07,614 INFO L146 ILogger]: Analyzing trace with hash 2140520520, now seen corresponding path program 8 times [2019-05-23 11:18:07,614 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:07,614 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:07,615 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:07,615 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:07,616 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:07,654 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,807 INFO L146 ILogger]: Checked inductivity of 276 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:18:07,807 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:07,808 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 11:18:07,825 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:07,862 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:07,862 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,863 INFO L146 ILogger]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:18:07,867 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:07,934 INFO L146 ILogger]: Checked inductivity of 276 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:18:07,960 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:07,960 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:18:07,960 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:18:07,961 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:18:07,961 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:18:07,961 INFO L146 ILogger]: Start difference. First operand 97 states and 100 transitions. Second operand 12 states. [2019-05-23 11:18:08,138 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:08,139 INFO L146 ILogger]: Finished difference Result 178 states and 186 transitions. [2019-05-23 11:18:08,139 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:18:08,139 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 92 [2019-05-23 11:18:08,140 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:08,141 INFO L146 ILogger]: With dead ends: 178 [2019-05-23 11:18:08,141 INFO L146 ILogger]: Without dead ends: 112 [2019-05-23 11:18:08,142 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:18:08,143 INFO L146 ILogger]: Start minimizeSevpa. Operand 112 states. [2019-05-23 11:18:08,148 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 112 to 106. [2019-05-23 11:18:08,148 INFO L146 ILogger]: Start removeUnreachable. Operand 106 states. [2019-05-23 11:18:08,149 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2019-05-23 11:18:08,149 INFO L146 ILogger]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 92 [2019-05-23 11:18:08,149 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:08,149 INFO L146 ILogger]: Abstraction has 106 states and 109 transitions. [2019-05-23 11:18:08,149 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:18:08,150 INFO L146 ILogger]: Start isEmpty. Operand 106 states and 109 transitions. [2019-05-23 11:18:08,151 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 102 [2019-05-23 11:18:08,151 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:08,151 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:08,151 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:08,152 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:08,152 INFO L146 ILogger]: Analyzing trace with hash -338219569, now seen corresponding path program 9 times [2019-05-23 11:18:08,152 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:08,152 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:08,153 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:08,153 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:08,153 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:08,173 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:08,311 INFO L146 ILogger]: Checked inductivity of 351 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-05-23 11:18:08,312 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:08,312 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 11:18:08,321 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:09,529 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:18:09,530 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:09,533 INFO L146 ILogger]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:18:09,537 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:09,593 INFO L146 ILogger]: Checked inductivity of 351 backedges. 25 proven. 117 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2019-05-23 11:18:09,614 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:09,614 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 15 [2019-05-23 11:18:09,615 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:18:09,615 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:18:09,616 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:18:09,616 INFO L146 ILogger]: Start difference. First operand 106 states and 109 transitions. Second operand 15 states. [2019-05-23 11:18:09,955 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:09,956 INFO L146 ILogger]: Finished difference Result 196 states and 207 transitions. [2019-05-23 11:18:09,957 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:18:09,957 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 101 [2019-05-23 11:18:09,957 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:09,958 INFO L146 ILogger]: With dead ends: 196 [2019-05-23 11:18:09,958 INFO L146 ILogger]: Without dead ends: 124 [2019-05-23 11:18:09,959 INFO L146 ILogger]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:18:09,959 INFO L146 ILogger]: Start minimizeSevpa. Operand 124 states. [2019-05-23 11:18:09,964 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 124 to 124. [2019-05-23 11:18:09,965 INFO L146 ILogger]: Start removeUnreachable. Operand 124 states. [2019-05-23 11:18:09,965 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2019-05-23 11:18:09,966 INFO L146 ILogger]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 101 [2019-05-23 11:18:09,966 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:09,966 INFO L146 ILogger]: Abstraction has 124 states and 127 transitions. [2019-05-23 11:18:09,966 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:18:09,966 INFO L146 ILogger]: Start isEmpty. Operand 124 states and 127 transitions. [2019-05-23 11:18:09,967 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:18:09,968 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:09,968 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:09,968 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:09,968 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:09,969 INFO L146 ILogger]: Analyzing trace with hash 1070106735, now seen corresponding path program 10 times [2019-05-23 11:18:09,969 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:09,969 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:09,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:09,970 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:09,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:09,992 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:10,773 INFO L146 ILogger]: Checked inductivity of 528 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2019-05-23 11:18:10,773 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:10,774 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:18:10,784 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:10,840 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:10,840 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:10,842 INFO L146 ILogger]: Trace formula consists of 172 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:18:10,845 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:10,936 INFO L146 ILogger]: Checked inductivity of 528 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2019-05-23 11:18:10,955 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:10,955 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:18:10,955 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:18:10,956 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:18:10,956 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:18:10,956 INFO L146 ILogger]: Start difference. First operand 124 states and 127 transitions. Second operand 15 states. [2019-05-23 11:18:11,309 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:11,309 INFO L146 ILogger]: Finished difference Result 223 states and 231 transitions. [2019-05-23 11:18:11,310 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:18:11,310 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 119 [2019-05-23 11:18:11,310 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:11,311 INFO L146 ILogger]: With dead ends: 223 [2019-05-23 11:18:11,311 INFO L146 ILogger]: Without dead ends: 139 [2019-05-23 11:18:11,312 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:18:11,312 INFO L146 ILogger]: Start minimizeSevpa. Operand 139 states. [2019-05-23 11:18:11,318 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 139 to 133. [2019-05-23 11:18:11,318 INFO L146 ILogger]: Start removeUnreachable. Operand 133 states. [2019-05-23 11:18:11,319 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2019-05-23 11:18:11,322 INFO L146 ILogger]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 119 [2019-05-23 11:18:11,322 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:11,322 INFO L146 ILogger]: Abstraction has 133 states and 136 transitions. [2019-05-23 11:18:11,322 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:18:11,322 INFO L146 ILogger]: Start isEmpty. Operand 133 states and 136 transitions. [2019-05-23 11:18:11,324 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 129 [2019-05-23 11:18:11,324 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:11,324 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:11,324 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:11,325 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:11,325 INFO L146 ILogger]: Analyzing trace with hash 1343186952, now seen corresponding path program 11 times [2019-05-23 11:18:11,325 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:11,325 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:11,326 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:11,326 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:11,326 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:11,368 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:11,689 INFO L146 ILogger]: Checked inductivity of 630 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-05-23 11:18:11,690 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:11,690 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 11:18:11,699 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:30,257 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:18:30,257 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:30,274 INFO L146 ILogger]: Trace formula consists of 184 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:18:30,276 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:30,312 INFO L146 ILogger]: Checked inductivity of 630 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-05-23 11:18:30,336 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:30,336 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:18:30,336 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:18:30,337 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:18:30,337 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:18:30,337 INFO L146 ILogger]: Start difference. First operand 133 states and 136 transitions. Second operand 16 states. [2019-05-23 11:18:30,622 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:30,623 INFO L146 ILogger]: Finished difference Result 238 states and 246 transitions. [2019-05-23 11:18:30,623 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:18:30,623 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 128 [2019-05-23 11:18:30,624 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:30,624 INFO L146 ILogger]: With dead ends: 238 [2019-05-23 11:18:30,624 INFO L146 ILogger]: Without dead ends: 148 [2019-05-23 11:18:30,625 INFO L146 ILogger]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:18:30,625 INFO L146 ILogger]: Start minimizeSevpa. Operand 148 states. [2019-05-23 11:18:30,631 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 148 to 142. [2019-05-23 11:18:30,631 INFO L146 ILogger]: Start removeUnreachable. Operand 142 states. [2019-05-23 11:18:30,632 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2019-05-23 11:18:30,632 INFO L146 ILogger]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 128 [2019-05-23 11:18:30,632 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:30,633 INFO L146 ILogger]: Abstraction has 142 states and 145 transitions. [2019-05-23 11:18:30,633 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:18:30,633 INFO L146 ILogger]: Start isEmpty. Operand 142 states and 145 transitions. [2019-05-23 11:18:30,634 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:18:30,634 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:30,635 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:30,635 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:30,635 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:30,635 INFO L146 ILogger]: Analyzing trace with hash 1521122063, now seen corresponding path program 12 times [2019-05-23 11:18:30,636 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:30,636 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:30,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:30,637 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:30,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:30,658 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:30,897 INFO L146 ILogger]: Checked inductivity of 741 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2019-05-23 11:18:30,897 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:30,897 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 11:18:30,907 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:45,978 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2019-05-23 11:18:45,978 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:45,991 INFO L146 ILogger]: Trace formula consists of 196 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:18:45,993 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:46,024 INFO L146 ILogger]: Checked inductivity of 741 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2019-05-23 11:18:46,059 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:46,060 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:18:46,060 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:18:46,061 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:18:46,061 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:18:46,061 INFO L146 ILogger]: Start difference. First operand 142 states and 145 transitions. Second operand 17 states. [2019-05-23 11:18:46,417 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:46,417 INFO L146 ILogger]: Finished difference Result 253 states and 261 transitions. [2019-05-23 11:18:46,418 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:18:46,418 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 137 [2019-05-23 11:18:46,418 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:46,419 INFO L146 ILogger]: With dead ends: 253 [2019-05-23 11:18:46,419 INFO L146 ILogger]: Without dead ends: 157 [2019-05-23 11:18:46,420 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:18:46,421 INFO L146 ILogger]: Start minimizeSevpa. Operand 157 states. [2019-05-23 11:18:46,424 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 157 to 151. [2019-05-23 11:18:46,424 INFO L146 ILogger]: Start removeUnreachable. Operand 151 states. [2019-05-23 11:18:46,425 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 151 states to 151 states and 154 transitions. [2019-05-23 11:18:46,425 INFO L146 ILogger]: Start accepts. Automaton has 151 states and 154 transitions. Word has length 137 [2019-05-23 11:18:46,425 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:46,426 INFO L146 ILogger]: Abstraction has 151 states and 154 transitions. [2019-05-23 11:18:46,426 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:18:46,426 INFO L146 ILogger]: Start isEmpty. Operand 151 states and 154 transitions. [2019-05-23 11:18:46,427 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 147 [2019-05-23 11:18:46,427 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:46,428 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:46,428 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:46,428 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:46,428 INFO L146 ILogger]: Analyzing trace with hash 1756051432, now seen corresponding path program 13 times [2019-05-23 11:18:46,428 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:46,428 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:46,429 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:46,429 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:46,430 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:46,447 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:46,679 INFO L146 ILogger]: Checked inductivity of 861 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2019-05-23 11:18:46,679 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:46,679 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 11:18:46,689 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:46,737 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:46,738 INFO L146 ILogger]: Trace formula consists of 208 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:18:46,753 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:46,864 INFO L146 ILogger]: Checked inductivity of 861 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2019-05-23 11:18:46,884 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:46,884 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:18:46,885 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:18:46,885 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:18:46,885 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:18:46,885 INFO L146 ILogger]: Start difference. First operand 151 states and 154 transitions. Second operand 18 states. [2019-05-23 11:18:47,201 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:47,201 INFO L146 ILogger]: Finished difference Result 268 states and 276 transitions. [2019-05-23 11:18:47,202 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:18:47,203 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 146 [2019-05-23 11:18:47,203 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:47,204 INFO L146 ILogger]: With dead ends: 268 [2019-05-23 11:18:47,204 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:18:47,205 INFO L146 ILogger]: 0 DeclaredPredicates, 162 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:18:47,205 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:18:47,209 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 160. [2019-05-23 11:18:47,209 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:18:47,210 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 163 transitions. [2019-05-23 11:18:47,210 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 163 transitions. Word has length 146 [2019-05-23 11:18:47,211 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:47,211 INFO L146 ILogger]: Abstraction has 160 states and 163 transitions. [2019-05-23 11:18:47,211 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:18:47,211 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 163 transitions. [2019-05-23 11:18:47,212 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 156 [2019-05-23 11:18:47,212 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:47,212 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:47,213 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:47,213 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:47,213 INFO L146 ILogger]: Analyzing trace with hash 611517871, now seen corresponding path program 14 times [2019-05-23 11:18:47,213 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:47,214 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:47,214 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:47,214 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:47,214 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:47,234 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:47,528 INFO L146 ILogger]: Checked inductivity of 990 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2019-05-23 11:18:47,529 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:47,529 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 11:18:47,539 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:47,578 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:47,578 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:47,579 INFO L146 ILogger]: Trace formula consists of 220 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:18:47,582 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:47,617 INFO L146 ILogger]: Checked inductivity of 990 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2019-05-23 11:18:47,646 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:47,647 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:18:47,647 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:18:47,647 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:18:47,648 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:18:47,648 INFO L146 ILogger]: Start difference. First operand 160 states and 163 transitions. Second operand 19 states. [2019-05-23 11:18:48,023 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:48,023 INFO L146 ILogger]: Finished difference Result 283 states and 291 transitions. [2019-05-23 11:18:48,024 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:18:48,024 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 155 [2019-05-23 11:18:48,024 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:48,025 INFO L146 ILogger]: With dead ends: 283 [2019-05-23 11:18:48,026 INFO L146 ILogger]: Without dead ends: 175 [2019-05-23 11:18:48,026 INFO L146 ILogger]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:18:48,027 INFO L146 ILogger]: Start minimizeSevpa. Operand 175 states. [2019-05-23 11:18:48,031 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 175 to 169. [2019-05-23 11:18:48,032 INFO L146 ILogger]: Start removeUnreachable. Operand 169 states. [2019-05-23 11:18:48,032 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 169 states to 169 states and 172 transitions. [2019-05-23 11:18:48,033 INFO L146 ILogger]: Start accepts. Automaton has 169 states and 172 transitions. Word has length 155 [2019-05-23 11:18:48,033 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:48,033 INFO L146 ILogger]: Abstraction has 169 states and 172 transitions. [2019-05-23 11:18:48,033 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:18:48,033 INFO L146 ILogger]: Start isEmpty. Operand 169 states and 172 transitions. [2019-05-23 11:18:48,034 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:18:48,034 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:48,034 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:48,035 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:48,035 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:48,035 INFO L146 ILogger]: Analyzing trace with hash -23875640, now seen corresponding path program 15 times [2019-05-23 11:18:48,035 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:48,035 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:48,036 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:48,036 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:48,036 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:48,058 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:49,028 INFO L146 ILogger]: Checked inductivity of 1128 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2019-05-23 11:18:49,029 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:49,029 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 11:18:49,039 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:58,889 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2019-05-23 11:18:58,890 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:58,897 INFO L146 ILogger]: Trace formula consists of 232 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:18:58,899 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:58,952 INFO L146 ILogger]: Checked inductivity of 1128 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2019-05-23 11:18:58,983 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:58,983 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:18:58,983 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:18:58,984 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:18:58,984 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:18:58,984 INFO L146 ILogger]: Start difference. First operand 169 states and 172 transitions. Second operand 20 states. [2019-05-23 11:18:59,311 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:59,311 INFO L146 ILogger]: Finished difference Result 298 states and 306 transitions. [2019-05-23 11:18:59,312 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:18:59,312 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 164 [2019-05-23 11:18:59,312 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:59,314 INFO L146 ILogger]: With dead ends: 298 [2019-05-23 11:18:59,314 INFO L146 ILogger]: Without dead ends: 184 [2019-05-23 11:18:59,315 INFO L146 ILogger]: 0 DeclaredPredicates, 182 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:18:59,315 INFO L146 ILogger]: Start minimizeSevpa. Operand 184 states. [2019-05-23 11:18:59,319 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 184 to 178. [2019-05-23 11:18:59,319 INFO L146 ILogger]: Start removeUnreachable. Operand 178 states. [2019-05-23 11:18:59,320 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 178 states to 178 states and 181 transitions. [2019-05-23 11:18:59,320 INFO L146 ILogger]: Start accepts. Automaton has 178 states and 181 transitions. Word has length 164 [2019-05-23 11:18:59,320 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:59,320 INFO L146 ILogger]: Abstraction has 178 states and 181 transitions. [2019-05-23 11:18:59,320 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:18:59,320 INFO L146 ILogger]: Start isEmpty. Operand 178 states and 181 transitions. [2019-05-23 11:18:59,321 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 174 [2019-05-23 11:18:59,321 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:59,322 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:59,322 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:59,322 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:59,322 INFO L146 ILogger]: Analyzing trace with hash 1352149071, now seen corresponding path program 16 times [2019-05-23 11:18:59,322 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:59,322 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:59,323 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:59,323 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:59,323 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:59,344 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:59,614 INFO L146 ILogger]: Checked inductivity of 1275 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2019-05-23 11:18:59,614 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:59,614 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 11:18:59,624 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:59,662 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:59,663 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:59,664 INFO L146 ILogger]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:18:59,666 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:59,702 INFO L146 ILogger]: Checked inductivity of 1275 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2019-05-23 11:18:59,729 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:59,729 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:18:59,730 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:18:59,730 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:18:59,730 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:18:59,730 INFO L146 ILogger]: Start difference. First operand 178 states and 181 transitions. Second operand 21 states. [2019-05-23 11:19:00,073 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:00,074 INFO L146 ILogger]: Finished difference Result 313 states and 321 transitions. [2019-05-23 11:19:00,074 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:19:00,074 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 173 [2019-05-23 11:19:00,075 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:00,076 INFO L146 ILogger]: With dead ends: 313 [2019-05-23 11:19:00,076 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:19:00,077 INFO L146 ILogger]: 0 DeclaredPredicates, 192 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:19:00,078 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:19:00,082 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 187. [2019-05-23 11:19:00,082 INFO L146 ILogger]: Start removeUnreachable. Operand 187 states. [2019-05-23 11:19:00,083 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 187 states to 187 states and 190 transitions. [2019-05-23 11:19:00,083 INFO L146 ILogger]: Start accepts. Automaton has 187 states and 190 transitions. Word has length 173 [2019-05-23 11:19:00,083 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:00,083 INFO L146 ILogger]: Abstraction has 187 states and 190 transitions. [2019-05-23 11:19:00,083 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:19:00,083 INFO L146 ILogger]: Start isEmpty. Operand 187 states and 190 transitions. [2019-05-23 11:19:00,084 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 183 [2019-05-23 11:19:00,084 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:00,085 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:00,085 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:00,085 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:00,085 INFO L146 ILogger]: Analyzing trace with hash -382546008, now seen corresponding path program 17 times [2019-05-23 11:19:00,086 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:00,086 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:00,086 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:00,087 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:00,087 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:00,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:00,385 INFO L146 ILogger]: Checked inductivity of 1431 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2019-05-23 11:19:00,386 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:00,386 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 11:19:00,395 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1