java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/zero_sum_m4_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:30:33,017 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:30:33,019 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:30:33,031 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:30:33,031 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:30:33,032 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:30:33,034 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:30:33,035 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:30:33,037 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:30:33,038 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:30:33,039 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:30:33,039 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:30:33,040 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:30:33,041 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:30:33,042 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:30:33,043 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:30:33,044 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:30:33,046 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:30:33,048 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:30:33,049 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:30:33,051 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:30:33,052 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:30:33,054 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:30:33,054 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:30:33,054 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:30:33,055 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:30:33,056 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:30:33,057 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:30:33,057 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:30:33,058 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:30:33,059 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:30:33,059 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:30:33,060 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:30:33,061 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:30:33,061 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:30:33,062 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:30:33,062 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:30:33,063 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:30:33,064 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:30:33,064 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:30:33,082 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:30:33,082 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:30:33,083 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:30:33,083 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:30:33,084 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:30:33,085 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:30:33,085 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:30:33,085 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:30:33,085 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:30:33,085 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:30:33,086 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:30:33,086 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:30:33,086 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:30:33,086 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:30:33,086 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:30:33,087 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:30:33,087 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:30:33,087 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:30:33,087 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:30:33,087 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:30:33,088 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:30:33,088 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:30:33,088 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:30:33,088 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:30:33,088 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:30:33,090 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:30:33,090 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:30:33,091 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:30:33,091 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 11:30:33,140 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:30:33,154 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:30:33,158 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:30:33,160 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:30:33,160 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:30:33,161 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_m4_true-unreach-call.c [2019-05-23 11:30:33,224 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1dce1cfa/4e5c01851fdd460c805260ee2204c054/FLAG724300a1c [2019-05-23 11:30:33,694 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:30:33,695 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_m4_true-unreach-call.c [2019-05-23 11:30:33,702 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1dce1cfa/4e5c01851fdd460c805260ee2204c054/FLAG724300a1c [2019-05-23 11:30:34,065 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1dce1cfa/4e5c01851fdd460c805260ee2204c054 [2019-05-23 11:30:34,075 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:30:34,077 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:30:34,078 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:34,078 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:30:34,087 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:30:34,088 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,091 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4404f55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34, skipping insertion in model container [2019-05-23 11:30:34,092 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,100 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:30:34,122 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:30:34,329 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:34,335 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:30:34,371 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:34,395 INFO L146 ILogger]: Completed translation [2019-05-23 11:30:34,396 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34 WrapperNode [2019-05-23 11:30:34,396 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:34,397 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:34,397 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:30:34,398 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:30:34,409 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,418 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,451 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:34,452 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:30:34,453 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:30:34,453 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:30:34,465 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,465 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,467 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,472 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,482 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,588 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,590 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,593 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:30:34,593 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:30:34,593 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:30:34,593 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:30:34,594 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (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 11:30:34,642 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:30:34,642 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:30:34,642 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:30:34,642 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:30:34,643 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:30:35,204 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:30:35,204 INFO L146 ILogger]: Removed 14 assume(true) statements. [2019-05-23 11:30:35,206 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:35 BoogieIcfgContainer [2019-05-23 11:30:35,206 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:30:35,207 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:30:35,207 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:30:35,210 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:30:35,211 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:30:34" (1/3) ... [2019-05-23 11:30:35,212 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f7f481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:35, skipping insertion in model container [2019-05-23 11:30:35,212 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34" (2/3) ... [2019-05-23 11:30:35,212 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f7f481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:35, skipping insertion in model container [2019-05-23 11:30:35,213 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:35" (3/3) ... [2019-05-23 11:30:35,214 INFO L146 ILogger]: Analyzing ICFG zero_sum_m4_true-unreach-call.c [2019-05-23 11:30:35,224 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:30:35,232 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:30:35,248 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:30:35,276 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:30:35,277 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:30:35,277 INFO L146 ILogger]: Hoare is true [2019-05-23 11:30:35,277 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:30:35,278 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:30:35,278 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:30:35,278 INFO L146 ILogger]: Difference is false [2019-05-23 11:30:35,278 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:30:35,278 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:30:35,296 INFO L146 ILogger]: Start isEmpty. Operand 88 states. [2019-05-23 11:30:35,304 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 34 [2019-05-23 11:30:35,304 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:35,305 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:35,307 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:35,312 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:35,312 INFO L146 ILogger]: Analyzing trace with hash 109607024, now seen corresponding path program 1 times [2019-05-23 11:30:35,313 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:35,314 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:35,357 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:35,357 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:35,357 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:35,390 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:35,434 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 11:30:35,437 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:35,438 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:30:35,442 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:30:35,455 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:30:35,456 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:30:35,458 INFO L146 ILogger]: Start difference. First operand 88 states. Second operand 2 states. [2019-05-23 11:30:35,482 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:35,483 INFO L146 ILogger]: Finished difference Result 156 states and 187 transitions. [2019-05-23 11:30:35,483 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:30:35,484 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 33 [2019-05-23 11:30:35,485 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:35,496 INFO L146 ILogger]: With dead ends: 156 [2019-05-23 11:30:35,496 INFO L146 ILogger]: Without dead ends: 82 [2019-05-23 11:30:35,501 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 11:30:35,520 INFO L146 ILogger]: Start minimizeSevpa. Operand 82 states. [2019-05-23 11:30:35,539 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-05-23 11:30:35,541 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:30:35,543 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2019-05-23 11:30:35,544 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 33 [2019-05-23 11:30:35,545 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:35,545 INFO L146 ILogger]: Abstraction has 82 states and 89 transitions. [2019-05-23 11:30:35,545 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:30:35,545 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 89 transitions. [2019-05-23 11:30:35,547 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 34 [2019-05-23 11:30:35,547 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:35,547 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:35,547 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:35,548 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:35,548 INFO L146 ILogger]: Analyzing trace with hash -1324278734, now seen corresponding path program 1 times [2019-05-23 11:30:35,548 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:35,548 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:35,549 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:35,550 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:35,550 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:35,579 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:35,885 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 11:30:35,886 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:35,886 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:30:35,888 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:30:35,888 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:30:35,889 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:35,889 INFO L146 ILogger]: Start difference. First operand 82 states and 89 transitions. Second operand 5 states. [2019-05-23 11:30:36,202 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:36,203 INFO L146 ILogger]: Finished difference Result 119 states and 133 transitions. [2019-05-23 11:30:36,203 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:30:36,204 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 33 [2019-05-23 11:30:36,205 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:36,207 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:30:36,207 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:30:36,208 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:30:36,209 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:30:36,220 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 97. [2019-05-23 11:30:36,220 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:30:36,222 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2019-05-23 11:30:36,222 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 33 [2019-05-23 11:30:36,223 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:36,223 INFO L146 ILogger]: Abstraction has 97 states and 111 transitions. [2019-05-23 11:30:36,223 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:30:36,223 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 111 transitions. [2019-05-23 11:30:36,225 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:30:36,225 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:36,225 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:36,226 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:36,226 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:36,226 INFO L146 ILogger]: Analyzing trace with hash -468088918, now seen corresponding path program 1 times [2019-05-23 11:30:36,226 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:36,226 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:36,227 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:36,228 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:36,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:36,256 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:36,510 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:36,510 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:36,511 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 11:30:36,529 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:36,562 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:36,564 INFO L146 ILogger]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:36,571 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:36,640 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:30:36,668 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:36,668 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:30:36,669 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:30:36,669 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:30:36,673 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:30:36,673 INFO L146 ILogger]: Start difference. First operand 97 states and 111 transitions. Second operand 7 states. [2019-05-23 11:30:37,747 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:37,747 INFO L146 ILogger]: Finished difference Result 207 states and 235 transitions. [2019-05-23 11:30:37,748 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:30:37,748 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 40 [2019-05-23 11:30:37,749 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:37,750 INFO L146 ILogger]: With dead ends: 207 [2019-05-23 11:30:37,750 INFO L146 ILogger]: Without dead ends: 132 [2019-05-23 11:30:37,751 INFO L146 ILogger]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:30:37,752 INFO L146 ILogger]: Start minimizeSevpa. Operand 132 states. [2019-05-23 11:30:37,761 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 132 to 97. [2019-05-23 11:30:37,761 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:30:37,763 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2019-05-23 11:30:37,763 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 40 [2019-05-23 11:30:37,763 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:37,763 INFO L146 ILogger]: Abstraction has 97 states and 104 transitions. [2019-05-23 11:30:37,763 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:30:37,764 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 104 transitions. [2019-05-23 11:30:37,766 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 97 [2019-05-23 11:30:37,766 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:37,767 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:37,767 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:37,767 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:37,768 INFO L146 ILogger]: Analyzing trace with hash 1564190570, now seen corresponding path program 1 times [2019-05-23 11:30:37,768 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:37,768 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:37,769 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:37,769 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:37,769 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:37,797 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:37,944 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:30:37,944 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:37,945 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 11:30:37,962 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:38,012 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:38,014 INFO L146 ILogger]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:38,020 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:38,144 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:30:38,163 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:38,163 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:38,163 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:38,164 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:38,164 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:38,164 INFO L146 ILogger]: Start difference. First operand 97 states and 104 transitions. Second operand 9 states. [2019-05-23 11:30:38,766 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:38,766 INFO L146 ILogger]: Finished difference Result 215 states and 229 transitions. [2019-05-23 11:30:38,767 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:38,767 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 96 [2019-05-23 11:30:38,768 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:38,769 INFO L146 ILogger]: With dead ends: 215 [2019-05-23 11:30:38,770 INFO L146 ILogger]: Without dead ends: 139 [2019-05-23 11:30:38,771 INFO L146 ILogger]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:38,772 INFO L146 ILogger]: Start minimizeSevpa. Operand 139 states. [2019-05-23 11:30:38,778 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 139 to 104. [2019-05-23 11:30:38,779 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:30:38,780 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2019-05-23 11:30:38,780 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 96 [2019-05-23 11:30:38,780 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:38,780 INFO L146 ILogger]: Abstraction has 104 states and 111 transitions. [2019-05-23 11:30:38,780 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:38,781 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 111 transitions. [2019-05-23 11:30:38,782 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:30:38,782 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:38,783 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:38,783 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:38,783 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:38,783 INFO L146 ILogger]: Analyzing trace with hash -1934630531, now seen corresponding path program 2 times [2019-05-23 11:30:38,783 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:38,784 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:38,785 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,785 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:38,785 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,807 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:38,926 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-05-23 11:30:38,926 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:38,927 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 11:30:38,935 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:38,987 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:38,987 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:38,988 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:38,993 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:39,089 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-05-23 11:30:39,108 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:39,108 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:39,108 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:39,109 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:39,109 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:39,109 INFO L146 ILogger]: Start difference. First operand 104 states and 111 transitions. Second operand 9 states. [2019-05-23 11:30:39,456 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:39,456 INFO L146 ILogger]: Finished difference Result 208 states and 221 transitions. [2019-05-23 11:30:39,457 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:39,457 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 103 [2019-05-23 11:30:39,458 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:39,459 INFO L146 ILogger]: With dead ends: 208 [2019-05-23 11:30:39,459 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:30:39,460 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:39,460 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:30:39,467 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 111. [2019-05-23 11:30:39,468 INFO L146 ILogger]: Start removeUnreachable. Operand 111 states. [2019-05-23 11:30:39,468 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2019-05-23 11:30:39,469 INFO L146 ILogger]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 103 [2019-05-23 11:30:39,469 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:39,469 INFO L146 ILogger]: Abstraction has 111 states and 118 transitions. [2019-05-23 11:30:39,469 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:39,469 INFO L146 ILogger]: Start isEmpty. Operand 111 states and 118 transitions. [2019-05-23 11:30:39,471 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:30:39,471 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:39,471 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:39,472 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:39,472 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:39,472 INFO L146 ILogger]: Analyzing trace with hash -976513405, now seen corresponding path program 3 times [2019-05-23 11:30:39,472 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:39,472 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:39,473 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:39,473 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:39,474 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:39,493 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:39,614 INFO L146 ILogger]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-05-23 11:30:39,614 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:39,615 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 11:30:39,625 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:39,678 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:30:39,678 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:39,679 INFO L146 ILogger]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:39,683 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:40,117 INFO L146 ILogger]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-05-23 11:30:40,146 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:40,147 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:40,147 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:40,147 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:40,148 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:40,148 INFO L146 ILogger]: Start difference. First operand 111 states and 118 transitions. Second operand 9 states. [2019-05-23 11:30:40,423 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:40,423 INFO L146 ILogger]: Finished difference Result 201 states and 213 transitions. [2019-05-23 11:30:40,423 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:40,424 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 110 [2019-05-23 11:30:40,424 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:40,426 INFO L146 ILogger]: With dead ends: 201 [2019-05-23 11:30:40,426 INFO L146 ILogger]: Without dead ends: 143 [2019-05-23 11:30:40,428 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:40,428 INFO L146 ILogger]: Start minimizeSevpa. Operand 143 states. [2019-05-23 11:30:40,435 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 143 to 118. [2019-05-23 11:30:40,436 INFO L146 ILogger]: Start removeUnreachable. Operand 118 states. [2019-05-23 11:30:40,436 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2019-05-23 11:30:40,437 INFO L146 ILogger]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 110 [2019-05-23 11:30:40,437 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:40,437 INFO L146 ILogger]: Abstraction has 118 states and 125 transitions. [2019-05-23 11:30:40,437 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:40,438 INFO L146 ILogger]: Start isEmpty. Operand 118 states and 125 transitions. [2019-05-23 11:30:40,439 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 118 [2019-05-23 11:30:40,439 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:40,440 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:40,440 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:40,440 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:40,441 INFO L146 ILogger]: Analyzing trace with hash -2023679964, now seen corresponding path program 4 times [2019-05-23 11:30:40,441 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:40,441 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:40,442 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:40,442 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:40,442 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:40,498 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:40,639 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-05-23 11:30:40,639 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:40,640 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 11:30:40,650 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:40,679 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:40,679 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:40,680 INFO L146 ILogger]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:40,684 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:40,777 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-05-23 11:30:40,797 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:40,797 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:40,798 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:40,798 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:40,798 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:40,798 INFO L146 ILogger]: Start difference. First operand 118 states and 125 transitions. Second operand 9 states. [2019-05-23 11:30:41,098 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:41,099 INFO L146 ILogger]: Finished difference Result 178 states and 188 transitions. [2019-05-23 11:30:41,099 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:41,099 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 117 [2019-05-23 11:30:41,100 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:41,101 INFO L146 ILogger]: With dead ends: 178 [2019-05-23 11:30:41,102 INFO L146 ILogger]: Without dead ends: 145 [2019-05-23 11:30:41,103 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:41,103 INFO L146 ILogger]: Start minimizeSevpa. Operand 145 states. [2019-05-23 11:30:41,109 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 145 to 125. [2019-05-23 11:30:41,109 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:30:41,110 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2019-05-23 11:30:41,110 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 117 [2019-05-23 11:30:41,110 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:41,110 INFO L146 ILogger]: Abstraction has 125 states and 132 transitions. [2019-05-23 11:30:41,110 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:41,110 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 132 transitions. [2019-05-23 11:30:41,112 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 125 [2019-05-23 11:30:41,112 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:41,113 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:41,113 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:41,113 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:41,113 INFO L146 ILogger]: Analyzing trace with hash -1781289259, now seen corresponding path program 5 times [2019-05-23 11:30:41,113 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:41,114 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:41,114 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,115 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:41,115 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,131 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:41,262 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-05-23 11:30:41,262 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:41,262 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 11:30:41,274 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:41,320 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:30:41,320 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:41,321 INFO L146 ILogger]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:41,324 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:41,435 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-05-23 11:30:41,454 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:41,454 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:41,455 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:41,455 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:41,455 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:41,456 INFO L146 ILogger]: Start difference. First operand 125 states and 132 transitions. Second operand 9 states. [2019-05-23 11:30:41,747 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:41,747 INFO L146 ILogger]: Finished difference Result 171 states and 180 transitions. [2019-05-23 11:30:41,748 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:41,748 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 124 [2019-05-23 11:30:41,748 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:41,749 INFO L146 ILogger]: With dead ends: 171 [2019-05-23 11:30:41,749 INFO L146 ILogger]: Without dead ends: 147 [2019-05-23 11:30:41,749 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:41,750 INFO L146 ILogger]: Start minimizeSevpa. Operand 147 states. [2019-05-23 11:30:41,754 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 147 to 132. [2019-05-23 11:30:41,754 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:30:41,755 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 139 transitions. [2019-05-23 11:30:41,755 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 139 transitions. Word has length 124 [2019-05-23 11:30:41,756 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:41,756 INFO L146 ILogger]: Abstraction has 132 states and 139 transitions. [2019-05-23 11:30:41,756 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:41,756 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 139 transitions. [2019-05-23 11:30:41,757 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:30:41,757 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:41,758 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:41,758 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:41,758 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:41,758 INFO L146 ILogger]: Analyzing trace with hash 2008789547, now seen corresponding path program 6 times [2019-05-23 11:30:41,759 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:41,759 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:41,760 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,760 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:41,760 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,774 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:41,899 INFO L146 ILogger]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:30:41,899 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:41,900 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 11:30:41,909 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:41,947 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:30:41,947 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:41,948 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:41,950 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:42,020 INFO L146 ILogger]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:30:42,038 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:42,038 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:42,039 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:42,039 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:42,039 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:42,039 INFO L146 ILogger]: Start difference. First operand 132 states and 139 transitions. Second operand 9 states. [2019-05-23 11:30:42,428 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:42,428 INFO L146 ILogger]: Finished difference Result 164 states and 172 transitions. [2019-05-23 11:30:42,429 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:42,429 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 131 [2019-05-23 11:30:42,430 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:42,431 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:30:42,432 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:30:42,432 INFO L146 ILogger]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:42,433 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:30:42,438 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 139. [2019-05-23 11:30:42,438 INFO L146 ILogger]: Start removeUnreachable. Operand 139 states. [2019-05-23 11:30:42,439 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2019-05-23 11:30:42,439 INFO L146 ILogger]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 131 [2019-05-23 11:30:42,439 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:42,439 INFO L146 ILogger]: Abstraction has 139 states and 146 transitions. [2019-05-23 11:30:42,440 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:42,440 INFO L146 ILogger]: Start isEmpty. Operand 139 states and 146 transitions. [2019-05-23 11:30:42,441 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 139 [2019-05-23 11:30:42,441 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:42,441 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:42,442 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:42,442 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:42,442 INFO L146 ILogger]: Analyzing trace with hash -1442212082, now seen corresponding path program 7 times [2019-05-23 11:30:42,442 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:42,443 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:42,443 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:42,444 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:42,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:42,459 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:42,585 INFO L146 ILogger]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:42,585 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:42,585 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:42,597 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:42,642 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:42,643 INFO L146 ILogger]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:42,647 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:42,887 INFO L146 ILogger]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:30:42,908 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:42,909 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:42,909 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:42,909 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:42,909 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:42,910 INFO L146 ILogger]: Start difference. First operand 139 states and 146 transitions. Second operand 9 states. [2019-05-23 11:30:43,247 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:43,248 INFO L146 ILogger]: Finished difference Result 157 states and 164 transitions. [2019-05-23 11:30:43,248 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:43,248 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 138 [2019-05-23 11:30:43,249 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:43,250 INFO L146 ILogger]: With dead ends: 157 [2019-05-23 11:30:43,251 INFO L146 ILogger]: Without dead ends: 151 [2019-05-23 11:30:43,252 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:43,253 INFO L146 ILogger]: Start minimizeSevpa. Operand 151 states. [2019-05-23 11:30:43,257 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 151 to 146. [2019-05-23 11:30:43,258 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:30:43,258 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 153 transitions. [2019-05-23 11:30:43,259 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 153 transitions. Word has length 138 [2019-05-23 11:30:43,259 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:43,259 INFO L146 ILogger]: Abstraction has 146 states and 153 transitions. [2019-05-23 11:30:43,259 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:43,259 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 153 transitions. [2019-05-23 11:30:43,261 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:30:43,261 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:43,262 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:43,262 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:43,263 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:43,263 INFO L146 ILogger]: Analyzing trace with hash -548758606, now seen corresponding path program 8 times [2019-05-23 11:30:43,263 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:43,263 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:43,265 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:43,265 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:43,265 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:43,336 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:44,379 WARN L146 ILogger]: Spent 162.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2019-05-23 11:30:44,767 WARN L146 ILogger]: Spent 209.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2019-05-23 11:30:45,074 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2019-05-23 11:30:45,357 WARN L146 ILogger]: Spent 156.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2019-05-23 11:30:46,166 WARN L146 ILogger]: Spent 139.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2019-05-23 11:30:51,783 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:51,783 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:51,783 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:51,793 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:51,834 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:51,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:51,836 WARN L146 ILogger]: Trace formula consists of 236 conjuncts, 122 conjunts are in the unsatisfiable core [2019-05-23 11:30:51,839 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:56,700 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:30:56,701 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:56,704 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:56,705 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:56,705 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:30:56,954 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:56,972 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:56,972 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 56] total 111 [2019-05-23 11:30:56,973 INFO L146 ILogger]: Interpolant automaton has 111 states [2019-05-23 11:30:56,974 INFO L146 ILogger]: Constructing interpolant automaton starting with 111 interpolants. [2019-05-23 11:30:56,980 INFO L146 ILogger]: CoverageRelationStatistics Valid=445, Invalid=11765, Unknown=0, NotChecked=0, Total=12210 [2019-05-23 11:30:56,981 INFO L146 ILogger]: Start difference. First operand 146 states and 153 transitions. Second operand 111 states. [2019-05-23 11:31:08,889 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-05-23 11:31:13,663 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:13,663 INFO L146 ILogger]: Finished difference Result 287 states and 301 transitions. [2019-05-23 11:31:13,668 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2019-05-23 11:31:13,668 INFO L146 ILogger]: Start accepts. Automaton has 111 states. Word has length 145 [2019-05-23 11:31:13,669 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:13,670 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:31:13,670 INFO L146 ILogger]: Without dead ends: 281 [2019-05-23 11:31:13,677 INFO L146 ILogger]: 0 DeclaredPredicates, 280 GetRequests, 98 SyntacticMatches, 13 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8183 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=990, Invalid=28080, Unknown=0, NotChecked=0, Total=29070 [2019-05-23 11:31:13,677 INFO L146 ILogger]: Start minimizeSevpa. Operand 281 states. [2019-05-23 11:31:13,684 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 281 to 257. [2019-05-23 11:31:13,684 INFO L146 ILogger]: Start removeUnreachable. Operand 257 states. [2019-05-23 11:31:13,685 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 257 states to 257 states and 271 transitions. [2019-05-23 11:31:13,685 INFO L146 ILogger]: Start accepts. Automaton has 257 states and 271 transitions. Word has length 145 [2019-05-23 11:31:13,686 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:13,686 INFO L146 ILogger]: Abstraction has 257 states and 271 transitions. [2019-05-23 11:31:13,686 INFO L146 ILogger]: Interpolant automaton has 111 states. [2019-05-23 11:31:13,686 INFO L146 ILogger]: Start isEmpty. Operand 257 states and 271 transitions. [2019-05-23 11:31:13,687 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:31:13,687 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:13,688 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:13,688 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:13,688 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:13,688 INFO L146 ILogger]: Analyzing trace with hash 2092877226, now seen corresponding path program 9 times [2019-05-23 11:31:13,688 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:13,689 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:13,689 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:13,690 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:13,690 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:13,703 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:13,920 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:13,920 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:13,920 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 11:31:13,931 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:31:14,004 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:31:14,005 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:14,007 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:14,009 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:14,196 INFO L146 ILogger]: Checked inductivity of 87 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:14,214 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:14,214 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:31:14,215 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:31:14,215 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:31:14,215 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:31:14,216 INFO L146 ILogger]: Start difference. First operand 257 states and 271 transitions. Second operand 24 states. [2019-05-23 11:31:15,449 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:15,449 INFO L146 ILogger]: Finished difference Result 543 states and 572 transitions. [2019-05-23 11:31:15,449 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:31:15,450 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 152 [2019-05-23 11:31:15,450 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:15,454 INFO L146 ILogger]: With dead ends: 543 [2019-05-23 11:31:15,454 INFO L146 ILogger]: Without dead ends: 466 [2019-05-23 11:31:15,455 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:31:15,456 INFO L146 ILogger]: Start minimizeSevpa. Operand 466 states. [2019-05-23 11:31:15,466 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 466 to 351. [2019-05-23 11:31:15,466 INFO L146 ILogger]: Start removeUnreachable. Operand 351 states. [2019-05-23 11:31:15,467 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 351 states to 351 states and 370 transitions. [2019-05-23 11:31:15,468 INFO L146 ILogger]: Start accepts. Automaton has 351 states and 370 transitions. Word has length 152 [2019-05-23 11:31:15,468 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:15,468 INFO L146 ILogger]: Abstraction has 351 states and 370 transitions. [2019-05-23 11:31:15,468 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:31:15,468 INFO L146 ILogger]: Start isEmpty. Operand 351 states and 370 transitions. [2019-05-23 11:31:15,469 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:31:15,469 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:15,470 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:15,470 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:15,470 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:15,470 INFO L146 ILogger]: Analyzing trace with hash 2145244814, now seen corresponding path program 10 times [2019-05-23 11:31:15,470 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:15,471 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:15,471 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:15,471 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:15,472 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:15,483 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:15,709 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:15,709 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:15,709 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 11:31:15,718 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:31:15,758 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:31:15,759 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:15,759 INFO L146 ILogger]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:15,762 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:16,073 INFO L146 ILogger]: Checked inductivity of 87 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:16,092 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:16,092 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:31:16,092 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:31:16,094 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:31:16,094 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:31:16,094 INFO L146 ILogger]: Start difference. First operand 351 states and 370 transitions. Second operand 21 states. [2019-05-23 11:31:16,814 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:16,814 INFO L146 ILogger]: Finished difference Result 490 states and 514 transitions. [2019-05-23 11:31:16,815 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:31:16,815 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 152 [2019-05-23 11:31:16,815 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:16,818 INFO L146 ILogger]: With dead ends: 490 [2019-05-23 11:31:16,818 INFO L146 ILogger]: Without dead ends: 461 [2019-05-23 11:31:16,819 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:31:16,820 INFO L146 ILogger]: Start minimizeSevpa. Operand 461 states. [2019-05-23 11:31:16,830 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 461 to 421. [2019-05-23 11:31:16,830 INFO L146 ILogger]: Start removeUnreachable. Operand 421 states. [2019-05-23 11:31:16,832 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 421 states to 421 states and 443 transitions. [2019-05-23 11:31:16,832 INFO L146 ILogger]: Start accepts. Automaton has 421 states and 443 transitions. Word has length 152 [2019-05-23 11:31:16,832 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:16,832 INFO L146 ILogger]: Abstraction has 421 states and 443 transitions. [2019-05-23 11:31:16,832 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:31:16,833 INFO L146 ILogger]: Start isEmpty. Operand 421 states and 443 transitions. [2019-05-23 11:31:16,834 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:31:16,834 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:16,834 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:16,834 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:16,835 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:16,835 INFO L146 ILogger]: Analyzing trace with hash -1626818731, now seen corresponding path program 11 times [2019-05-23 11:31:16,835 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:16,835 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:16,836 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:16,836 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:16,836 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:16,847 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:17,229 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:17,230 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:17,230 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 11:31:17,246 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:31:17,299 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:31:17,299 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:17,300 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:17,303 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:17,663 INFO L146 ILogger]: Checked inductivity of 87 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:17,681 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:17,681 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:31:17,681 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:31:17,682 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:31:17,682 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:31:17,682 INFO L146 ILogger]: Start difference. First operand 421 states and 443 transitions. Second operand 21 states. [2019-05-23 11:31:19,033 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:19,033 INFO L146 ILogger]: Finished difference Result 489 states and 511 transitions. [2019-05-23 11:31:19,033 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:31:19,034 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 152 [2019-05-23 11:31:19,034 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:19,037 INFO L146 ILogger]: With dead ends: 489 [2019-05-23 11:31:19,037 INFO L146 ILogger]: Without dead ends: 421 [2019-05-23 11:31:19,038 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:31:19,039 INFO L146 ILogger]: Start minimizeSevpa. Operand 421 states. [2019-05-23 11:31:19,046 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 421 to 349. [2019-05-23 11:31:19,047 INFO L146 ILogger]: Start removeUnreachable. Operand 349 states. [2019-05-23 11:31:19,048 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 349 states to 349 states and 365 transitions. [2019-05-23 11:31:19,048 INFO L146 ILogger]: Start accepts. Automaton has 349 states and 365 transitions. Word has length 152 [2019-05-23 11:31:19,048 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:19,048 INFO L146 ILogger]: Abstraction has 349 states and 365 transitions. [2019-05-23 11:31:19,049 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:31:19,049 INFO L146 ILogger]: Start isEmpty. Operand 349 states and 365 transitions. [2019-05-23 11:31:19,050 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:31:19,050 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:19,050 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:19,050 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:19,050 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:19,051 INFO L146 ILogger]: Analyzing trace with hash -2139149796, now seen corresponding path program 12 times [2019-05-23 11:31:19,051 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:19,051 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:19,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:19,052 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:19,052 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:19,063 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:19,584 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:19,585 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:19,585 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 11:31:19,595 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:31:19,631 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:31:19,632 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:19,633 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:19,635 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:19,817 INFO L146 ILogger]: Checked inductivity of 87 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:19,835 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:19,836 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:31:19,836 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:31:19,837 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:31:19,837 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:31:19,837 INFO L146 ILogger]: Start difference. First operand 349 states and 365 transitions. Second operand 24 states. [2019-05-23 11:31:20,217 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2019-05-23 11:31:21,875 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:21,876 INFO L146 ILogger]: Finished difference Result 580 states and 600 transitions. [2019-05-23 11:31:21,876 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:31:21,876 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 152 [2019-05-23 11:31:21,876 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:21,878 INFO L146 ILogger]: With dead ends: 580 [2019-05-23 11:31:21,879 INFO L146 ILogger]: Without dead ends: 480 [2019-05-23 11:31:21,880 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:31:21,881 INFO L146 ILogger]: Start minimizeSevpa. Operand 480 states. [2019-05-23 11:31:21,889 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 480 to 333. [2019-05-23 11:31:21,890 INFO L146 ILogger]: Start removeUnreachable. Operand 333 states. [2019-05-23 11:31:21,890 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 333 states to 333 states and 347 transitions. [2019-05-23 11:31:21,891 INFO L146 ILogger]: Start accepts. Automaton has 333 states and 347 transitions. Word has length 152 [2019-05-23 11:31:21,891 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:21,891 INFO L146 ILogger]: Abstraction has 333 states and 347 transitions. [2019-05-23 11:31:21,891 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:31:21,891 INFO L146 ILogger]: Start isEmpty. Operand 333 states and 347 transitions. [2019-05-23 11:31:21,892 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:31:21,892 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:21,893 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:21,893 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:21,893 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:21,893 INFO L146 ILogger]: Analyzing trace with hash 249376483, now seen corresponding path program 13 times [2019-05-23 11:31:21,893 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:21,893 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:21,894 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:21,894 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:21,894 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:21,905 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:22,049 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:22,050 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:22,050 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 11:31:22,059 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:22,094 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:22,095 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:22,097 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:22,247 INFO L146 ILogger]: Checked inductivity of 87 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:22,265 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:22,265 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:31:22,266 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:31:22,266 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:31:22,266 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:31:22,266 INFO L146 ILogger]: Start difference. First operand 333 states and 347 transitions. Second operand 20 states. [2019-05-23 11:31:22,825 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:22,826 INFO L146 ILogger]: Finished difference Result 477 states and 491 transitions. [2019-05-23 11:31:22,826 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:31:22,826 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 152 [2019-05-23 11:31:22,827 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:22,828 INFO L146 ILogger]: With dead ends: 477 [2019-05-23 11:31:22,828 INFO L146 ILogger]: Without dead ends: 384 [2019-05-23 11:31:22,829 INFO L146 ILogger]: 0 DeclaredPredicates, 176 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:22,830 INFO L146 ILogger]: Start minimizeSevpa. Operand 384 states. [2019-05-23 11:31:22,837 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 384 to 317. [2019-05-23 11:31:22,837 INFO L146 ILogger]: Start removeUnreachable. Operand 317 states. [2019-05-23 11:31:22,838 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 317 states to 317 states and 330 transitions. [2019-05-23 11:31:22,838 INFO L146 ILogger]: Start accepts. Automaton has 317 states and 330 transitions. Word has length 152 [2019-05-23 11:31:22,838 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:22,838 INFO L146 ILogger]: Abstraction has 317 states and 330 transitions. [2019-05-23 11:31:22,838 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:31:22,838 INFO L146 ILogger]: Start isEmpty. Operand 317 states and 330 transitions. [2019-05-23 11:31:22,839 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:31:22,839 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:22,840 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:22,840 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:22,840 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:22,840 INFO L146 ILogger]: Analyzing trace with hash 1153429105, now seen corresponding path program 14 times [2019-05-23 11:31:22,840 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:22,840 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:22,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:22,841 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:22,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:22,852 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:23,065 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:23,066 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:23,066 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 11:31:23,075 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:31:23,110 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:31:23,111 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:23,112 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:23,113 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:23,441 INFO L146 ILogger]: Checked inductivity of 87 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:23,460 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:23,460 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:31:23,461 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:31:23,461 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:31:23,461 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:31:23,461 INFO L146 ILogger]: Start difference. First operand 317 states and 330 transitions. Second operand 20 states. [2019-05-23 11:31:24,044 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:24,044 INFO L146 ILogger]: Finished difference Result 477 states and 489 transitions. [2019-05-23 11:31:24,045 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:31:24,045 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 152 [2019-05-23 11:31:24,045 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:24,047 INFO L146 ILogger]: With dead ends: 477 [2019-05-23 11:31:24,047 INFO L146 ILogger]: Without dead ends: 368 [2019-05-23 11:31:24,049 INFO L146 ILogger]: 0 DeclaredPredicates, 176 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:24,050 INFO L146 ILogger]: Start minimizeSevpa. Operand 368 states. [2019-05-23 11:31:24,057 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 368 to 309. [2019-05-23 11:31:24,057 INFO L146 ILogger]: Start removeUnreachable. Operand 309 states. [2019-05-23 11:31:24,058 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 309 states to 309 states and 320 transitions. [2019-05-23 11:31:24,058 INFO L146 ILogger]: Start accepts. Automaton has 309 states and 320 transitions. Word has length 152 [2019-05-23 11:31:24,058 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:24,058 INFO L146 ILogger]: Abstraction has 309 states and 320 transitions. [2019-05-23 11:31:24,058 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:31:24,058 INFO L146 ILogger]: Start isEmpty. Operand 309 states and 320 transitions. [2019-05-23 11:31:24,059 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:31:24,059 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:24,060 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:24,060 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:24,060 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:24,060 INFO L146 ILogger]: Analyzing trace with hash 696035640, now seen corresponding path program 15 times [2019-05-23 11:31:24,060 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:24,060 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:24,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:24,061 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:24,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:24,072 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:24,237 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:24,237 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:24,237 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 11:31:24,253 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:31:24,292 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:31:24,292 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:24,293 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:24,295 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:24,461 INFO L146 ILogger]: Checked inductivity of 87 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:24,479 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:24,479 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:31:24,479 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:31:24,480 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:31:24,480 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:31:24,480 INFO L146 ILogger]: Start difference. First operand 309 states and 320 transitions. Second operand 24 states. [2019-05-23 11:31:26,073 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:26,073 INFO L146 ILogger]: Finished difference Result 567 states and 585 transitions. [2019-05-23 11:31:26,074 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:31:26,074 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 152 [2019-05-23 11:31:26,074 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:26,076 INFO L146 ILogger]: With dead ends: 567 [2019-05-23 11:31:26,076 INFO L146 ILogger]: Without dead ends: 378 [2019-05-23 11:31:26,077 INFO L146 ILogger]: 0 DeclaredPredicates, 189 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=309, Invalid=2043, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:31:26,078 INFO L146 ILogger]: Start minimizeSevpa. Operand 378 states. [2019-05-23 11:31:26,084 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 378 to 277. [2019-05-23 11:31:26,084 INFO L146 ILogger]: Start removeUnreachable. Operand 277 states. [2019-05-23 11:31:26,085 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 277 states to 277 states and 288 transitions. [2019-05-23 11:31:26,085 INFO L146 ILogger]: Start accepts. Automaton has 277 states and 288 transitions. Word has length 152 [2019-05-23 11:31:26,085 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:26,085 INFO L146 ILogger]: Abstraction has 277 states and 288 transitions. [2019-05-23 11:31:26,086 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:31:26,086 INFO L146 ILogger]: Start isEmpty. Operand 277 states and 288 transitions. [2019-05-23 11:31:26,087 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:31:26,087 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:26,087 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:26,087 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:26,087 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:26,088 INFO L146 ILogger]: Analyzing trace with hash 898692607, now seen corresponding path program 16 times [2019-05-23 11:31:26,088 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:26,088 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:26,088 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:26,089 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:26,089 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:26,100 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:26,676 INFO L146 ILogger]: Checked inductivity of 87 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:26,676 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:26,676 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 11:31:26,685 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:31:26,722 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:31:26,722 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:26,723 INFO L146 ILogger]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:26,725 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:26,838 INFO L146 ILogger]: Checked inductivity of 87 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:31:26,856 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:26,857 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:31:26,857 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:31:26,857 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:31:26,857 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:31:26,858 INFO L146 ILogger]: Start difference. First operand 277 states and 288 transitions. Second operand 20 states. [2019-05-23 11:31:27,466 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:27,466 INFO L146 ILogger]: Finished difference Result 373 states and 388 transitions. [2019-05-23 11:31:27,466 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:31:27,466 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 152 [2019-05-23 11:31:27,467 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:27,468 INFO L146 ILogger]: With dead ends: 373 [2019-05-23 11:31:27,468 INFO L146 ILogger]: Without dead ends: 186 [2019-05-23 11:31:27,470 INFO L146 ILogger]: 0 DeclaredPredicates, 180 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:31:27,470 INFO L146 ILogger]: Start minimizeSevpa. Operand 186 states. [2019-05-23 11:31:27,474 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 186 to 181. [2019-05-23 11:31:27,474 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:31:27,474 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 188 transitions. [2019-05-23 11:31:27,475 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 188 transitions. Word has length 152 [2019-05-23 11:31:27,475 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:27,475 INFO L146 ILogger]: Abstraction has 181 states and 188 transitions. [2019-05-23 11:31:27,475 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:31:27,475 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 188 transitions. [2019-05-23 11:31:27,476 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:31:27,476 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:27,476 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:27,477 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:27,477 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:27,477 INFO L146 ILogger]: Analyzing trace with hash 934091914, now seen corresponding path program 17 times [2019-05-23 11:31:27,477 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:27,477 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:27,478 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:27,478 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:27,478 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:27,491 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:27,851 INFO L146 ILogger]: Checked inductivity of 147 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-05-23 11:31:27,851 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:27,851 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:27,863 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:31:27,906 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:31:27,906 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:27,907 INFO L146 ILogger]: Trace formula consists of 291 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:27,909 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:28,071 INFO L146 ILogger]: Checked inductivity of 147 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-05-23 11:31:28,090 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:28,090 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:31:28,091 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:31:28,091 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:31:28,092 INFO L146 ILogger]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:31:28,092 INFO L146 ILogger]: Start difference. First operand 181 states and 188 transitions. Second operand 24 states. [2019-05-23 11:31:28,859 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:28,859 INFO L146 ILogger]: Finished difference Result 307 states and 320 transitions. [2019-05-23 11:31:28,859 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:31:28,860 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 180 [2019-05-23 11:31:28,860 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:28,861 INFO L146 ILogger]: With dead ends: 307 [2019-05-23 11:31:28,861 INFO L146 ILogger]: Without dead ends: 200 [2019-05-23 11:31:28,862 INFO L146 ILogger]: 0 DeclaredPredicates, 217 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=303, Invalid=1859, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:31:28,863 INFO L146 ILogger]: Start minimizeSevpa. Operand 200 states. [2019-05-23 11:31:28,867 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 200 to 195. [2019-05-23 11:31:28,867 INFO L146 ILogger]: Start removeUnreachable. Operand 195 states. [2019-05-23 11:31:28,867 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 195 states to 195 states and 202 transitions. [2019-05-23 11:31:28,867 INFO L146 ILogger]: Start accepts. Automaton has 195 states and 202 transitions. Word has length 180 [2019-05-23 11:31:28,868 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:28,868 INFO L146 ILogger]: Abstraction has 195 states and 202 transitions. [2019-05-23 11:31:28,868 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:31:28,868 INFO L146 ILogger]: Start isEmpty. Operand 195 states and 202 transitions. [2019-05-23 11:31:28,869 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:31:28,869 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:28,869 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:28,870 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:28,870 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:28,870 INFO L146 ILogger]: Analyzing trace with hash -1684174717, now seen corresponding path program 18 times [2019-05-23 11:31:28,870 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:28,870 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:28,871 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:28,871 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:28,871 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:28,885 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:29,155 INFO L146 ILogger]: Checked inductivity of 177 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-05-23 11:31:29,156 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:29,156 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:29,164 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:31:29,215 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:31:29,215 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:29,216 INFO L146 ILogger]: Trace formula consists of 313 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:29,219 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:30,362 INFO L146 ILogger]: Checked inductivity of 177 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-05-23 11:31:30,380 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:30,381 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:31:30,382 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:31:30,382 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:31:30,382 INFO L146 ILogger]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:31:30,382 INFO L146 ILogger]: Start difference. First operand 195 states and 202 transitions. Second operand 24 states. [2019-05-23 11:31:31,236 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:31,236 INFO L146 ILogger]: Finished difference Result 282 states and 292 transitions. [2019-05-23 11:31:31,237 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:31:31,237 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 194 [2019-05-23 11:31:31,237 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:31,238 INFO L146 ILogger]: With dead ends: 282 [2019-05-23 11:31:31,238 INFO L146 ILogger]: Without dead ends: 207 [2019-05-23 11:31:31,239 INFO L146 ILogger]: 0 DeclaredPredicates, 226 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=246, Invalid=1476, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:31:31,239 INFO L146 ILogger]: Start minimizeSevpa. Operand 207 states. [2019-05-23 11:31:31,243 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 207 to 202. [2019-05-23 11:31:31,243 INFO L146 ILogger]: Start removeUnreachable. Operand 202 states. [2019-05-23 11:31:31,244 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 202 states to 202 states and 209 transitions. [2019-05-23 11:31:31,244 INFO L146 ILogger]: Start accepts. Automaton has 202 states and 209 transitions. Word has length 194 [2019-05-23 11:31:31,244 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:31,244 INFO L146 ILogger]: Abstraction has 202 states and 209 transitions. [2019-05-23 11:31:31,244 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:31:31,244 INFO L146 ILogger]: Start isEmpty. Operand 202 states and 209 transitions. [2019-05-23 11:31:31,245 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 202 [2019-05-23 11:31:31,245 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:31,246 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:31,246 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:31,246 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:31,246 INFO L146 ILogger]: Analyzing trace with hash 930686486, now seen corresponding path program 19 times [2019-05-23 11:31:31,247 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:31,247 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:31,247 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:31,247 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:31,248 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:31,289 INFO L146 ILogger]: Conjunction of SSA is unsat