java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_vector_difference_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:43,010 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:43,012 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:43,028 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:43,028 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:43,029 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:43,031 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:43,032 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:43,034 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:43,035 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:43,036 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:43,036 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:43,037 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:43,038 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:43,039 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:43,040 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:43,041 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:43,043 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:43,045 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:43,046 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:43,048 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:43,049 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:43,051 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:43,051 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:43,051 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:43,052 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:43,054 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:43,055 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:43,055 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:43,056 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:43,057 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:43,059 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:43,061 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:43,061 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:43,062 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:43,062 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:43,062 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:43,064 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:43,065 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:43,065 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:43,085 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:43,086 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:43,087 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:43,087 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:43,087 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:43,088 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:43,088 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:43,088 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:43,088 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:43,088 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:43,089 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:43,089 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:43,089 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:43,089 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:43,089 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:43,089 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:43,090 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:43,090 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:43,090 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:43,090 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:43,090 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:43,091 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:43,091 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:43,091 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:43,091 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:43,091 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:43,092 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:43,092 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:43,092 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 11:20:43,124 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:43,136 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:43,139 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:43,141 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:43,141 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:43,142 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_vector_difference_true-unreach-call_ground.i [2019-05-23 11:20:43,199 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e839caba4/066b2b22ee67458d8306b09b5d245f21/FLAG1b9a96117 [2019-05-23 11:20:43,641 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:43,642 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_vector_difference_true-unreach-call_ground.i [2019-05-23 11:20:43,648 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e839caba4/066b2b22ee67458d8306b09b5d245f21/FLAG1b9a96117 [2019-05-23 11:20:43,995 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e839caba4/066b2b22ee67458d8306b09b5d245f21 [2019-05-23 11:20:44,010 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:44,011 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:44,012 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:44,013 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:44,017 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:44,018 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,021 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e1dd5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44, skipping insertion in model container [2019-05-23 11:20:44,021 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,029 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:44,050 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:44,279 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:44,285 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:44,314 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:44,331 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:44,332 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44 WrapperNode [2019-05-23 11:20:44,332 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:44,333 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:44,333 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:44,333 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:44,341 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,349 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,374 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:44,375 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:44,375 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:44,375 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:44,383 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,384 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,386 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,386 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,476 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,481 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,482 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (1/1) ... [2019-05-23 11:20:44,484 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:44,485 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:44,485 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:44,485 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:44,486 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (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 11:20:44,546 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:44,546 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:44,546 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:44,547 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:44,547 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:44,547 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:44,989 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:44,990 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:20:44,991 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:44 BoogieIcfgContainer [2019-05-23 11:20:44,991 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:44,992 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:44,992 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:44,995 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:44,995 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:44" (1/3) ... [2019-05-23 11:20:44,996 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58357bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:44, skipping insertion in model container [2019-05-23 11:20:44,996 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:44" (2/3) ... [2019-05-23 11:20:44,997 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58357bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:44, skipping insertion in model container [2019-05-23 11:20:44,997 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:44" (3/3) ... [2019-05-23 11:20:44,999 INFO L146 ILogger]: Analyzing ICFG standard_vector_difference_true-unreach-call_ground.i [2019-05-23 11:20:45,008 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:45,016 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:45,031 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:45,060 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:45,061 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:45,061 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:45,061 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:45,061 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:45,061 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:45,062 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:45,062 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:45,062 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:45,077 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:20:45,083 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:20:45,084 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:45,085 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:45,086 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:45,091 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:45,091 INFO L146 ILogger]: Analyzing trace with hash -1217186092, now seen corresponding path program 1 times [2019-05-23 11:20:45,092 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:45,093 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:45,136 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,137 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:45,137 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,175 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,213 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 11:20:45,215 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:45,215 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:45,218 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:45,230 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:45,231 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:45,233 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:20:45,252 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:45,253 INFO L146 ILogger]: Finished difference Result 71 states and 77 transitions. [2019-05-23 11:20:45,253 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:45,254 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 20 [2019-05-23 11:20:45,254 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:45,263 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:20:45,263 INFO L146 ILogger]: Without dead ends: 33 [2019-05-23 11:20:45,266 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 11:20:45,279 INFO L146 ILogger]: Start minimizeSevpa. Operand 33 states. [2019-05-23 11:20:45,295 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-05-23 11:20:45,296 INFO L146 ILogger]: Start removeUnreachable. Operand 33 states. [2019-05-23 11:20:45,297 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2019-05-23 11:20:45,299 INFO L146 ILogger]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 20 [2019-05-23 11:20:45,299 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:45,300 INFO L146 ILogger]: Abstraction has 33 states and 34 transitions. [2019-05-23 11:20:45,300 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:45,300 INFO L146 ILogger]: Start isEmpty. Operand 33 states and 34 transitions. [2019-05-23 11:20:45,301 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:20:45,301 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:45,301 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:45,302 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:45,302 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:45,302 INFO L146 ILogger]: Analyzing trace with hash 1786954014, now seen corresponding path program 1 times [2019-05-23 11:20:45,302 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:45,302 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:45,304 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,304 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:45,304 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,320 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,427 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 11:20:45,427 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:45,428 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:45,430 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:45,432 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:45,432 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:45,432 INFO L146 ILogger]: Start difference. First operand 33 states and 34 transitions. Second operand 3 states. [2019-05-23 11:20:45,589 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:45,590 INFO L146 ILogger]: Finished difference Result 58 states and 60 transitions. [2019-05-23 11:20:45,590 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:45,590 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 20 [2019-05-23 11:20:45,591 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:45,592 INFO L146 ILogger]: With dead ends: 58 [2019-05-23 11:20:45,592 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:20:45,593 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:45,594 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:20:45,598 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 34. [2019-05-23 11:20:45,598 INFO L146 ILogger]: Start removeUnreachable. Operand 34 states. [2019-05-23 11:20:45,599 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2019-05-23 11:20:45,599 INFO L146 ILogger]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 20 [2019-05-23 11:20:45,599 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:45,600 INFO L146 ILogger]: Abstraction has 34 states and 35 transitions. [2019-05-23 11:20:45,600 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:45,600 INFO L146 ILogger]: Start isEmpty. Operand 34 states and 35 transitions. [2019-05-23 11:20:45,601 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:20:45,601 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:45,601 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] [2019-05-23 11:20:45,601 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:45,602 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:45,602 INFO L146 ILogger]: Analyzing trace with hash -960702008, now seen corresponding path program 1 times [2019-05-23 11:20:45,602 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:45,602 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:45,603 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,603 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:45,604 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,629 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,719 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 11:20:45,720 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:45,720 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 11:20:45,732 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:45,763 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,765 INFO L146 ILogger]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:45,772 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:45,871 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 11:20:45,895 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:45,896 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:45,896 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:45,897 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:45,897 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:45,897 INFO L146 ILogger]: Start difference. First operand 34 states and 35 transitions. Second operand 5 states. [2019-05-23 11:20:46,082 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:46,082 INFO L146 ILogger]: Finished difference Result 65 states and 67 transitions. [2019-05-23 11:20:46,084 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:46,085 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 27 [2019-05-23 11:20:46,085 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:46,086 INFO L146 ILogger]: With dead ends: 65 [2019-05-23 11:20:46,086 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 11:20:46,087 INFO L146 ILogger]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:46,090 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 11:20:46,096 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 41. [2019-05-23 11:20:46,096 INFO L146 ILogger]: Start removeUnreachable. Operand 41 states. [2019-05-23 11:20:46,097 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2019-05-23 11:20:46,097 INFO L146 ILogger]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 27 [2019-05-23 11:20:46,098 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:46,098 INFO L146 ILogger]: Abstraction has 41 states and 42 transitions. [2019-05-23 11:20:46,098 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:46,098 INFO L146 ILogger]: Start isEmpty. Operand 41 states and 42 transitions. [2019-05-23 11:20:46,101 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:20:46,101 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:46,102 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] [2019-05-23 11:20:46,102 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:46,103 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:46,103 INFO L146 ILogger]: Analyzing trace with hash 754945502, now seen corresponding path program 2 times [2019-05-23 11:20:46,103 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:46,103 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:46,105 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,105 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:46,106 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,148 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,273 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:46,273 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:46,273 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 11:20:46,290 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:46,324 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:46,325 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,326 INFO L146 ILogger]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:46,328 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:46,382 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:46,411 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:46,411 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:46,412 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:46,412 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:46,413 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:46,413 INFO L146 ILogger]: Start difference. First operand 41 states and 42 transitions. Second operand 6 states. [2019-05-23 11:20:46,562 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:46,562 INFO L146 ILogger]: Finished difference Result 72 states and 74 transitions. [2019-05-23 11:20:46,562 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:46,562 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 34 [2019-05-23 11:20:46,563 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:46,564 INFO L146 ILogger]: With dead ends: 72 [2019-05-23 11:20:46,564 INFO L146 ILogger]: Without dead ends: 54 [2019-05-23 11:20:46,565 INFO L146 ILogger]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:46,565 INFO L146 ILogger]: Start minimizeSevpa. Operand 54 states. [2019-05-23 11:20:46,570 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 54 to 48. [2019-05-23 11:20:46,570 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:20:46,571 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2019-05-23 11:20:46,571 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 34 [2019-05-23 11:20:46,572 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:46,572 INFO L146 ILogger]: Abstraction has 48 states and 49 transitions. [2019-05-23 11:20:46,572 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:46,572 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 49 transitions. [2019-05-23 11:20:46,574 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:20:46,574 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:46,574 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:46,574 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:46,575 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:46,575 INFO L146 ILogger]: Analyzing trace with hash -647744248, now seen corresponding path program 3 times [2019-05-23 11:20:46,575 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:46,575 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:46,576 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,576 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:46,577 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,595 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,801 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:46,801 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:46,801 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 11:20:46,818 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:46,893 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:20:46,894 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,894 INFO L146 ILogger]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:46,899 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:46,915 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:46,934 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:46,934 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:20:46,935 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:46,935 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:46,935 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:46,936 INFO L146 ILogger]: Start difference. First operand 48 states and 49 transitions. Second operand 7 states. [2019-05-23 11:20:47,036 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:47,036 INFO L146 ILogger]: Finished difference Result 79 states and 81 transitions. [2019-05-23 11:20:47,037 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:20:47,037 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 41 [2019-05-23 11:20:47,038 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:47,038 INFO L146 ILogger]: With dead ends: 79 [2019-05-23 11:20:47,039 INFO L146 ILogger]: Without dead ends: 61 [2019-05-23 11:20:47,039 INFO L146 ILogger]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:47,040 INFO L146 ILogger]: Start minimizeSevpa. Operand 61 states. [2019-05-23 11:20:47,044 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 61 to 55. [2019-05-23 11:20:47,044 INFO L146 ILogger]: Start removeUnreachable. Operand 55 states. [2019-05-23 11:20:47,045 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2019-05-23 11:20:47,046 INFO L146 ILogger]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 41 [2019-05-23 11:20:47,046 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:47,046 INFO L146 ILogger]: Abstraction has 55 states and 56 transitions. [2019-05-23 11:20:47,046 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:47,046 INFO L146 ILogger]: Start isEmpty. Operand 55 states and 56 transitions. [2019-05-23 11:20:47,048 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 49 [2019-05-23 11:20:47,048 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:47,049 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:47,049 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:47,049 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:47,049 INFO L146 ILogger]: Analyzing trace with hash 599198366, now seen corresponding path program 4 times [2019-05-23 11:20:47,049 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:47,050 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:47,050 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,051 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:47,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,067 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,160 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:47,161 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:47,161 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 11:20:47,181 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:47,213 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:47,214 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,214 INFO L146 ILogger]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:47,218 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:47,245 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:47,267 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:47,267 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:20:47,268 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:20:47,268 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:20:47,268 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:47,268 INFO L146 ILogger]: Start difference. First operand 55 states and 56 transitions. Second operand 8 states. [2019-05-23 11:20:47,636 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:47,636 INFO L146 ILogger]: Finished difference Result 86 states and 88 transitions. [2019-05-23 11:20:47,640 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:47,640 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 48 [2019-05-23 11:20:47,640 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:47,641 INFO L146 ILogger]: With dead ends: 86 [2019-05-23 11:20:47,641 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:20:47,647 INFO L146 ILogger]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:47,648 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:20:47,655 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 62. [2019-05-23 11:20:47,655 INFO L146 ILogger]: Start removeUnreachable. Operand 62 states. [2019-05-23 11:20:47,656 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2019-05-23 11:20:47,656 INFO L146 ILogger]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 48 [2019-05-23 11:20:47,657 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:47,657 INFO L146 ILogger]: Abstraction has 62 states and 63 transitions. [2019-05-23 11:20:47,657 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:20:47,657 INFO L146 ILogger]: Start isEmpty. Operand 62 states and 63 transitions. [2019-05-23 11:20:47,658 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 56 [2019-05-23 11:20:47,659 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:47,659 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:47,659 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:47,659 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:47,659 INFO L146 ILogger]: Analyzing trace with hash 829087816, now seen corresponding path program 5 times [2019-05-23 11:20:47,660 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:47,660 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:47,661 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,661 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:47,661 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,678 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,802 INFO L146 ILogger]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:47,802 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:47,802 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 11:20:47,812 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:47,922 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:20:47,922 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,923 INFO L146 ILogger]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:47,926 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:47,955 INFO L146 ILogger]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:47,973 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:47,974 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:47,974 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:47,974 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:47,975 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:47,975 INFO L146 ILogger]: Start difference. First operand 62 states and 63 transitions. Second operand 9 states. [2019-05-23 11:20:48,407 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:48,409 INFO L146 ILogger]: Finished difference Result 93 states and 95 transitions. [2019-05-23 11:20:48,410 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:48,410 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 55 [2019-05-23 11:20:48,411 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:48,411 INFO L146 ILogger]: With dead ends: 93 [2019-05-23 11:20:48,412 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:20:48,412 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:48,413 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:20:48,417 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 69. [2019-05-23 11:20:48,417 INFO L146 ILogger]: Start removeUnreachable. Operand 69 states. [2019-05-23 11:20:48,418 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2019-05-23 11:20:48,418 INFO L146 ILogger]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 55 [2019-05-23 11:20:48,418 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:48,418 INFO L146 ILogger]: Abstraction has 69 states and 70 transitions. [2019-05-23 11:20:48,419 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:48,419 INFO L146 ILogger]: Start isEmpty. Operand 69 states and 70 transitions. [2019-05-23 11:20:48,420 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 63 [2019-05-23 11:20:48,420 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:48,420 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:48,421 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:48,421 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:48,421 INFO L146 ILogger]: Analyzing trace with hash 976566110, now seen corresponding path program 6 times [2019-05-23 11:20:48,421 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:48,421 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:48,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:48,422 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:48,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:48,440 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,929 INFO L146 ILogger]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:48,929 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:48,929 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 11:20:48,938 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:49,010 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:49,010 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,011 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:49,015 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:49,049 INFO L146 ILogger]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:49,082 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:49,082 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:20:49,083 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:20:49,083 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:20:49,083 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:49,084 INFO L146 ILogger]: Start difference. First operand 69 states and 70 transitions. Second operand 10 states. [2019-05-23 11:20:49,299 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:49,300 INFO L146 ILogger]: Finished difference Result 100 states and 102 transitions. [2019-05-23 11:20:49,300 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:20:49,300 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 62 [2019-05-23 11:20:49,300 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:49,301 INFO L146 ILogger]: With dead ends: 100 [2019-05-23 11:20:49,301 INFO L146 ILogger]: Without dead ends: 82 [2019-05-23 11:20:49,302 INFO L146 ILogger]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:49,302 INFO L146 ILogger]: Start minimizeSevpa. Operand 82 states. [2019-05-23 11:20:49,308 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 82 to 76. [2019-05-23 11:20:49,308 INFO L146 ILogger]: Start removeUnreachable. Operand 76 states. [2019-05-23 11:20:49,309 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2019-05-23 11:20:49,309 INFO L146 ILogger]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 62 [2019-05-23 11:20:49,310 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:49,310 INFO L146 ILogger]: Abstraction has 76 states and 77 transitions. [2019-05-23 11:20:49,310 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:20:49,310 INFO L146 ILogger]: Start isEmpty. Operand 76 states and 77 transitions. [2019-05-23 11:20:49,311 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:20:49,311 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:49,312 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:49,312 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:49,312 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:49,313 INFO L146 ILogger]: Analyzing trace with hash 231005064, now seen corresponding path program 7 times [2019-05-23 11:20:49,313 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:49,313 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:49,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,314 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:49,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,331 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,520 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:49,521 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:49,521 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 11:20:49,529 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:49,549 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,549 INFO L146 ILogger]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:49,552 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:49,569 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:49,587 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:49,587 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:20:49,588 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:20:49,588 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:20:49,588 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:49,588 INFO L146 ILogger]: Start difference. First operand 76 states and 77 transitions. Second operand 11 states. [2019-05-23 11:20:49,705 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:49,706 INFO L146 ILogger]: Finished difference Result 107 states and 109 transitions. [2019-05-23 11:20:49,706 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:20:49,707 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 69 [2019-05-23 11:20:49,707 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:49,708 INFO L146 ILogger]: With dead ends: 107 [2019-05-23 11:20:49,708 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:20:49,709 INFO L146 ILogger]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:49,709 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:20:49,714 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 83. [2019-05-23 11:20:49,714 INFO L146 ILogger]: Start removeUnreachable. Operand 83 states. [2019-05-23 11:20:49,715 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2019-05-23 11:20:49,715 INFO L146 ILogger]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 69 [2019-05-23 11:20:49,715 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:49,715 INFO L146 ILogger]: Abstraction has 83 states and 84 transitions. [2019-05-23 11:20:49,716 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:20:49,716 INFO L146 ILogger]: Start isEmpty. Operand 83 states and 84 transitions. [2019-05-23 11:20:49,717 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:20:49,717 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:49,717 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:49,717 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:49,717 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:49,718 INFO L146 ILogger]: Analyzing trace with hash 923145246, now seen corresponding path program 8 times [2019-05-23 11:20:49,718 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:49,718 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:49,719 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,719 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:49,719 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,735 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,892 INFO L146 ILogger]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:49,892 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:49,892 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 11:20:49,903 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:49,928 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:49,928 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,929 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:20:49,933 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:49,965 INFO L146 ILogger]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:49,987 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:49,988 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:20:49,988 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:20:49,988 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:20:49,989 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:49,989 INFO L146 ILogger]: Start difference. First operand 83 states and 84 transitions. Second operand 12 states. [2019-05-23 11:20:50,121 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:50,122 INFO L146 ILogger]: Finished difference Result 114 states and 116 transitions. [2019-05-23 11:20:50,123 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:50,123 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 76 [2019-05-23 11:20:50,124 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:50,124 INFO L146 ILogger]: With dead ends: 114 [2019-05-23 11:20:50,124 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:20:50,125 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:50,125 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:20:50,129 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 90. [2019-05-23 11:20:50,129 INFO L146 ILogger]: Start removeUnreachable. Operand 90 states. [2019-05-23 11:20:50,131 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2019-05-23 11:20:50,132 INFO L146 ILogger]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 76 [2019-05-23 11:20:50,132 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:50,132 INFO L146 ILogger]: Abstraction has 90 states and 91 transitions. [2019-05-23 11:20:50,132 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:20:50,132 INFO L146 ILogger]: Start isEmpty. Operand 90 states and 91 transitions. [2019-05-23 11:20:50,133 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 84 [2019-05-23 11:20:50,134 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:50,135 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:50,135 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:50,136 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:50,136 INFO L146 ILogger]: Analyzing trace with hash 1919297224, now seen corresponding path program 9 times [2019-05-23 11:20:50,136 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:50,136 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:50,137 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,137 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:50,137 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,152 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,367 INFO L146 ILogger]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:50,368 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:50,368 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 11:20:50,383 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:50,445 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:20:50,445 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,446 INFO L146 ILogger]: Trace formula consists of 144 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:20:50,450 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:50,491 INFO L146 ILogger]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:50,512 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:50,513 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:20:50,514 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:20:50,514 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:20:50,515 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:50,515 INFO L146 ILogger]: Start difference. First operand 90 states and 91 transitions. Second operand 13 states. [2019-05-23 11:20:50,647 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:50,647 INFO L146 ILogger]: Finished difference Result 121 states and 123 transitions. [2019-05-23 11:20:50,649 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:20:50,649 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 83 [2019-05-23 11:20:50,650 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:50,651 INFO L146 ILogger]: With dead ends: 121 [2019-05-23 11:20:50,651 INFO L146 ILogger]: Without dead ends: 103 [2019-05-23 11:20:50,652 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:50,652 INFO L146 ILogger]: Start minimizeSevpa. Operand 103 states. [2019-05-23 11:20:50,655 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 103 to 97. [2019-05-23 11:20:50,656 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:20:50,656 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2019-05-23 11:20:50,657 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 83 [2019-05-23 11:20:50,657 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:50,657 INFO L146 ILogger]: Abstraction has 97 states and 98 transitions. [2019-05-23 11:20:50,657 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:20:50,657 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 98 transitions. [2019-05-23 11:20:50,658 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 91 [2019-05-23 11:20:50,658 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:50,659 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:50,659 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:50,659 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:50,659 INFO L146 ILogger]: Analyzing trace with hash 2075500766, now seen corresponding path program 10 times [2019-05-23 11:20:50,659 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:50,660 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:50,660 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,660 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:50,661 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,675 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,212 INFO L146 ILogger]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:51,212 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:51,213 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 11:20:51,223 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:51,427 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:51,427 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,429 INFO L146 ILogger]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:20:51,432 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:51,467 INFO L146 ILogger]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:51,490 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:51,490 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:20:51,490 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:20:51,491 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:20:51,491 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:51,491 INFO L146 ILogger]: Start difference. First operand 97 states and 98 transitions. Second operand 14 states. [2019-05-23 11:20:51,757 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:51,757 INFO L146 ILogger]: Finished difference Result 128 states and 130 transitions. [2019-05-23 11:20:51,758 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:20:51,758 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 90 [2019-05-23 11:20:51,759 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:51,761 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:20:51,761 INFO L146 ILogger]: Without dead ends: 110 [2019-05-23 11:20:51,761 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:51,762 INFO L146 ILogger]: Start minimizeSevpa. Operand 110 states. [2019-05-23 11:20:51,766 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 110 to 104. [2019-05-23 11:20:51,766 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:20:51,768 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2019-05-23 11:20:51,768 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 90 [2019-05-23 11:20:51,768 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:51,768 INFO L146 ILogger]: Abstraction has 104 states and 105 transitions. [2019-05-23 11:20:51,769 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:20:51,769 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 105 transitions. [2019-05-23 11:20:51,770 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 98 [2019-05-23 11:20:51,770 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:51,770 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:51,770 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:51,771 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:51,771 INFO L146 ILogger]: Analyzing trace with hash 1749205512, now seen corresponding path program 11 times [2019-05-23 11:20:51,771 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:51,771 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:51,772 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,772 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:51,772 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,787 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,955 INFO L146 ILogger]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:51,955 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:51,956 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 11:20:51,965 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:52,129 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:20:52,130 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:52,131 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:20:52,135 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:52,174 INFO L146 ILogger]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:52,205 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:52,205 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:20:52,206 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:20:52,206 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:20:52,206 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:52,206 INFO L146 ILogger]: Start difference. First operand 104 states and 105 transitions. Second operand 15 states. [2019-05-23 11:20:52,321 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:52,321 INFO L146 ILogger]: Finished difference Result 135 states and 137 transitions. [2019-05-23 11:20:52,322 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:52,322 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 97 [2019-05-23 11:20:52,322 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:52,323 INFO L146 ILogger]: With dead ends: 135 [2019-05-23 11:20:52,323 INFO L146 ILogger]: Without dead ends: 117 [2019-05-23 11:20:52,324 INFO L146 ILogger]: 0 DeclaredPredicates, 110 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:52,325 INFO L146 ILogger]: Start minimizeSevpa. Operand 117 states. [2019-05-23 11:20:52,327 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 117 to 111. [2019-05-23 11:20:52,327 INFO L146 ILogger]: Start removeUnreachable. Operand 111 states. [2019-05-23 11:20:52,328 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2019-05-23 11:20:52,328 INFO L146 ILogger]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 97 [2019-05-23 11:20:52,328 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:52,328 INFO L146 ILogger]: Abstraction has 111 states and 112 transitions. [2019-05-23 11:20:52,329 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:20:52,329 INFO L146 ILogger]: Start isEmpty. Operand 111 states and 112 transitions. [2019-05-23 11:20:52,330 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 105 [2019-05-23 11:20:52,330 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:52,330 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:52,330 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:52,330 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:52,331 INFO L146 ILogger]: Analyzing trace with hash -993010274, now seen corresponding path program 12 times [2019-05-23 11:20:52,331 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:52,331 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:52,332 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:52,332 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:52,332 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:52,347 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,066 INFO L146 ILogger]: Checked inductivity of 474 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:53,066 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:53,067 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 11:20:53,077 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:53,297 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:20:53,297 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,298 INFO L146 ILogger]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:53,300 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:53,327 INFO L146 ILogger]: Checked inductivity of 474 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:53,347 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:53,348 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:20:53,348 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:53,348 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:53,349 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:53,349 INFO L146 ILogger]: Start difference. First operand 111 states and 112 transitions. Second operand 16 states. [2019-05-23 11:20:53,606 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:53,606 INFO L146 ILogger]: Finished difference Result 142 states and 144 transitions. [2019-05-23 11:20:53,607 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:53,607 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 104 [2019-05-23 11:20:53,607 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:53,608 INFO L146 ILogger]: With dead ends: 142 [2019-05-23 11:20:53,608 INFO L146 ILogger]: Without dead ends: 124 [2019-05-23 11:20:53,608 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:53,609 INFO L146 ILogger]: Start minimizeSevpa. Operand 124 states. [2019-05-23 11:20:53,610 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 124 to 118. [2019-05-23 11:20:53,610 INFO L146 ILogger]: Start removeUnreachable. Operand 118 states. [2019-05-23 11:20:53,611 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2019-05-23 11:20:53,611 INFO L146 ILogger]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 104 [2019-05-23 11:20:53,611 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:53,612 INFO L146 ILogger]: Abstraction has 118 states and 119 transitions. [2019-05-23 11:20:53,612 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:53,612 INFO L146 ILogger]: Start isEmpty. Operand 118 states and 119 transitions. [2019-05-23 11:20:53,613 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 112 [2019-05-23 11:20:53,613 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:53,613 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:53,613 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:53,613 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:53,614 INFO L146 ILogger]: Analyzing trace with hash 1028566344, now seen corresponding path program 13 times [2019-05-23 11:20:53,614 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:53,614 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:53,615 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:53,615 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:53,615 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:53,628 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:54,537 INFO L146 ILogger]: Checked inductivity of 559 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:54,537 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:54,537 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 11:20:54,555 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:54,591 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:54,593 INFO L146 ILogger]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:20:54,594 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:54,629 INFO L146 ILogger]: Checked inductivity of 559 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:54,650 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:54,650 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:20:54,651 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:20:54,651 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:20:54,652 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:54,652 INFO L146 ILogger]: Start difference. First operand 118 states and 119 transitions. Second operand 17 states. [2019-05-23 11:20:54,780 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:54,780 INFO L146 ILogger]: Finished difference Result 149 states and 151 transitions. [2019-05-23 11:20:54,781 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:20:54,781 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 111 [2019-05-23 11:20:54,781 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:54,782 INFO L146 ILogger]: With dead ends: 149 [2019-05-23 11:20:54,783 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:20:54,784 INFO L146 ILogger]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:54,784 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:20:54,787 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 125. [2019-05-23 11:20:54,787 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:20:54,788 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2019-05-23 11:20:54,788 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 111 [2019-05-23 11:20:54,788 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:54,788 INFO L146 ILogger]: Abstraction has 125 states and 126 transitions. [2019-05-23 11:20:54,789 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:20:54,789 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 126 transitions. [2019-05-23 11:20:54,789 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:20:54,790 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:54,790 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:54,790 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:54,790 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:54,790 INFO L146 ILogger]: Analyzing trace with hash -371144098, now seen corresponding path program 14 times [2019-05-23 11:20:54,791 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:54,791 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:54,791 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:54,792 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:54,792 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:54,804 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:54,983 INFO L146 ILogger]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:54,984 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:54,984 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 11:20:54,993 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:55,039 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:55,039 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:55,040 INFO L146 ILogger]: Trace formula consists of 194 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:20:55,042 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:55,083 INFO L146 ILogger]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:55,103 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:55,104 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:20:55,104 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:20:55,104 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:20:55,105 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:55,105 INFO L146 ILogger]: Start difference. First operand 125 states and 126 transitions. Second operand 18 states. [2019-05-23 11:20:55,288 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:55,288 INFO L146 ILogger]: Finished difference Result 156 states and 158 transitions. [2019-05-23 11:20:55,289 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:20:55,289 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 118 [2019-05-23 11:20:55,289 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:55,290 INFO L146 ILogger]: With dead ends: 156 [2019-05-23 11:20:55,290 INFO L146 ILogger]: Without dead ends: 138 [2019-05-23 11:20:55,291 INFO L146 ILogger]: 0 DeclaredPredicates, 134 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:55,291 INFO L146 ILogger]: Start minimizeSevpa. Operand 138 states. [2019-05-23 11:20:55,293 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 138 to 132. [2019-05-23 11:20:55,293 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:20:55,294 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2019-05-23 11:20:55,294 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 118 [2019-05-23 11:20:55,294 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:55,294 INFO L146 ILogger]: Abstraction has 132 states and 133 transitions. [2019-05-23 11:20:55,295 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:20:55,295 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 133 transitions. [2019-05-23 11:20:55,296 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 126 [2019-05-23 11:20:55,296 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:55,296 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:55,296 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:55,296 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:55,297 INFO L146 ILogger]: Analyzing trace with hash -998381432, now seen corresponding path program 15 times [2019-05-23 11:20:55,297 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:55,297 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:55,298 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,298 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:55,298 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,311 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:55,529 INFO L146 ILogger]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:55,529 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:55,529 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:20:55,537 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:55,793 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-05-23 11:20:55,793 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:55,795 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:20:55,798 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:55,839 INFO L146 ILogger]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:55,869 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:55,869 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:20:55,869 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:55,870 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:55,870 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:55,870 INFO L146 ILogger]: Start difference. First operand 132 states and 133 transitions. Second operand 19 states. [2019-05-23 11:20:56,108 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:56,109 INFO L146 ILogger]: Finished difference Result 163 states and 165 transitions. [2019-05-23 11:20:56,109 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:20:56,109 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 125 [2019-05-23 11:20:56,109 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:56,110 INFO L146 ILogger]: With dead ends: 163 [2019-05-23 11:20:56,110 INFO L146 ILogger]: Without dead ends: 145 [2019-05-23 11:20:56,111 INFO L146 ILogger]: 0 DeclaredPredicates, 142 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:56,112 INFO L146 ILogger]: Start minimizeSevpa. Operand 145 states. [2019-05-23 11:20:56,116 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 145 to 139. [2019-05-23 11:20:56,116 INFO L146 ILogger]: Start removeUnreachable. Operand 139 states. [2019-05-23 11:20:56,116 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2019-05-23 11:20:56,117 INFO L146 ILogger]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 125 [2019-05-23 11:20:56,117 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:56,117 INFO L146 ILogger]: Abstraction has 139 states and 140 transitions. [2019-05-23 11:20:56,117 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:56,117 INFO L146 ILogger]: Start isEmpty. Operand 139 states and 140 transitions. [2019-05-23 11:20:56,118 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:20:56,118 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:56,118 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:56,119 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:56,119 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:56,119 INFO L146 ILogger]: Analyzing trace with hash -1653315810, now seen corresponding path program 16 times [2019-05-23 11:20:56,119 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:56,119 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:56,120 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:56,120 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:56,120 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:56,136 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:56,546 INFO L146 ILogger]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:56,546 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:56,547 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 11:20:56,556 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:56,737 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:56,738 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:56,740 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:20:56,741 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:56,813 INFO L146 ILogger]: Checked inductivity of 856 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:56,833 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:56,834 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:20:56,834 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:20:56,834 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:20:56,835 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:56,835 INFO L146 ILogger]: Start difference. First operand 139 states and 140 transitions. Second operand 20 states. [2019-05-23 11:20:56,988 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:56,989 INFO L146 ILogger]: Finished difference Result 170 states and 172 transitions. [2019-05-23 11:20:56,997 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:20:56,997 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 132 [2019-05-23 11:20:56,997 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:56,998 INFO L146 ILogger]: With dead ends: 170 [2019-05-23 11:20:56,998 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:20:56,999 INFO L146 ILogger]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:57,000 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:20:57,002 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 146. [2019-05-23 11:20:57,002 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:20:57,003 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2019-05-23 11:20:57,003 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 132 [2019-05-23 11:20:57,003 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:57,004 INFO L146 ILogger]: Abstraction has 146 states and 147 transitions. [2019-05-23 11:20:57,004 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:20:57,004 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 147 transitions. [2019-05-23 11:20:57,005 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 140 [2019-05-23 11:20:57,005 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:57,005 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:57,005 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:57,005 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:57,006 INFO L146 ILogger]: Analyzing trace with hash -1782287416, now seen corresponding path program 17 times [2019-05-23 11:20:57,006 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:57,006 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:57,007 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:57,007 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:57,007 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:57,020 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:57,336 INFO L146 ILogger]: Checked inductivity of 969 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:57,336 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:57,336 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 11:20:57,345 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:57,710 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:20:57,710 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:57,713 INFO L146 ILogger]: Trace formula consists of 224 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:20:57,715 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:57,752 INFO L146 ILogger]: Checked inductivity of 969 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:57,781 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:57,781 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:20:57,781 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:20:57,783 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:20:57,783 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:57,783 INFO L146 ILogger]: Start difference. First operand 146 states and 147 transitions. Second operand 21 states. [2019-05-23 11:20:57,982 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:57,982 INFO L146 ILogger]: Finished difference Result 177 states and 179 transitions. [2019-05-23 11:20:57,982 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:20:57,982 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 139 [2019-05-23 11:20:57,983 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:57,984 INFO L146 ILogger]: With dead ends: 177 [2019-05-23 11:20:57,984 INFO L146 ILogger]: Without dead ends: 159 [2019-05-23 11:20:57,985 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:57,986 INFO L146 ILogger]: Start minimizeSevpa. Operand 159 states. [2019-05-23 11:20:57,989 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 159 to 153. [2019-05-23 11:20:57,989 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:20:57,989 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2019-05-23 11:20:57,990 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 139 [2019-05-23 11:20:57,990 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:57,990 INFO L146 ILogger]: Abstraction has 153 states and 154 transitions. [2019-05-23 11:20:57,990 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:20:57,990 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 154 transitions. [2019-05-23 11:20:57,991 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 147 [2019-05-23 11:20:57,991 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:57,991 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:57,992 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:57,992 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:57,992 INFO L146 ILogger]: Analyzing trace with hash 756462558, now seen corresponding path program 18 times [2019-05-23 11:20:57,992 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:57,992 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:57,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:57,993 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:57,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:58,006 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:58,240 INFO L146 ILogger]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:58,240 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:58,240 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 11:20:58,249 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:58,876 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-05-23 11:20:58,876 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:58,878 INFO L146 ILogger]: Trace formula consists of 234 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:20:58,880 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:58,932 INFO L146 ILogger]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:58,961 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:58,962 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:20:58,962 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:20:58,963 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:20:58,963 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:58,963 INFO L146 ILogger]: Start difference. First operand 153 states and 154 transitions. Second operand 22 states. [2019-05-23 11:20:59,309 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:59,309 INFO L146 ILogger]: Finished difference Result 184 states and 186 transitions. [2019-05-23 11:20:59,310 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:20:59,310 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 146 [2019-05-23 11:20:59,311 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:59,311 INFO L146 ILogger]: With dead ends: 184 [2019-05-23 11:20:59,311 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:20:59,312 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:59,312 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:20:59,315 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 160. [2019-05-23 11:20:59,315 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:20:59,316 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2019-05-23 11:20:59,316 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 146 [2019-05-23 11:20:59,316 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:59,317 INFO L146 ILogger]: Abstraction has 160 states and 161 transitions. [2019-05-23 11:20:59,317 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:20:59,317 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 161 transitions. [2019-05-23 11:20:59,318 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 154 [2019-05-23 11:20:59,318 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:59,318 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:59,318 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:59,318 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:59,318 INFO L146 ILogger]: Analyzing trace with hash 1310084872, now seen corresponding path program 19 times [2019-05-23 11:20:59,319 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:59,319 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:59,319 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:59,320 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:59,320 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:59,335 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:59,641 INFO L146 ILogger]: Checked inductivity of 1216 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:59,641 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:59,641 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 11:20:59,651 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:59,690 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:59,691 INFO L146 ILogger]: Trace formula consists of 244 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:20:59,694 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:59,783 INFO L146 ILogger]: Checked inductivity of 1216 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:59,811 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:59,812 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:20:59,812 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:20:59,812 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:20:59,813 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:59,813 INFO L146 ILogger]: Start difference. First operand 160 states and 161 transitions. Second operand 23 states. [2019-05-23 11:21:00,015 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:00,016 INFO L146 ILogger]: Finished difference Result 191 states and 193 transitions. [2019-05-23 11:21:00,016 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:21:00,016 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 153 [2019-05-23 11:21:00,017 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:00,018 INFO L146 ILogger]: With dead ends: 191 [2019-05-23 11:21:00,018 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:21:00,019 INFO L146 ILogger]: 0 DeclaredPredicates, 174 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:21:00,019 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:21:00,022 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 167. [2019-05-23 11:21:00,022 INFO L146 ILogger]: Start removeUnreachable. Operand 167 states. [2019-05-23 11:21:00,023 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2019-05-23 11:21:00,023 INFO L146 ILogger]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 153 [2019-05-23 11:21:00,023 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:00,023 INFO L146 ILogger]: Abstraction has 167 states and 168 transitions. [2019-05-23 11:21:00,023 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:21:00,023 INFO L146 ILogger]: Start isEmpty. Operand 167 states and 168 transitions. [2019-05-23 11:21:00,024 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 161 [2019-05-23 11:21:00,024 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:00,024 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:00,025 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:00,025 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:00,025 INFO L146 ILogger]: Analyzing trace with hash 1096003742, now seen corresponding path program 20 times [2019-05-23 11:21:00,025 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:00,025 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:00,026 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:00,026 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:00,026 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:00,040 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:00,459 INFO L146 ILogger]: Checked inductivity of 1350 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:00,460 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:00,460 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:00,470 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:00,512 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:00,512 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:00,513 INFO L146 ILogger]: Trace formula consists of 254 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:21:00,515 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:00,552 INFO L146 ILogger]: Checked inductivity of 1350 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:00,570 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:00,571 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-05-23 11:21:00,571 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:21:00,571 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:21:00,572 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:21:00,572 INFO L146 ILogger]: Start difference. First operand 167 states and 168 transitions. Second operand 24 states. [2019-05-23 11:21:00,777 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:00,777 INFO L146 ILogger]: Finished difference Result 198 states and 200 transitions. [2019-05-23 11:21:00,780 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:21:00,781 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 160 [2019-05-23 11:21:00,781 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:00,782 INFO L146 ILogger]: With dead ends: 198 [2019-05-23 11:21:00,782 INFO L146 ILogger]: Without dead ends: 180 [2019-05-23 11:21:00,783 INFO L146 ILogger]: 0 DeclaredPredicates, 182 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:21:00,783 INFO L146 ILogger]: Start minimizeSevpa. Operand 180 states. [2019-05-23 11:21:00,787 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 180 to 174. [2019-05-23 11:21:00,787 INFO L146 ILogger]: Start removeUnreachable. Operand 174 states. [2019-05-23 11:21:00,787 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2019-05-23 11:21:00,788 INFO L146 ILogger]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 160 [2019-05-23 11:21:00,788 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:00,788 INFO L146 ILogger]: Abstraction has 174 states and 175 transitions. [2019-05-23 11:21:00,788 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:21:00,788 INFO L146 ILogger]: Start isEmpty. Operand 174 states and 175 transitions. [2019-05-23 11:21:00,789 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:21:00,789 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:00,789 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:00,790 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:00,790 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:00,790 INFO L146 ILogger]: Analyzing trace with hash -815302072, now seen corresponding path program 21 times [2019-05-23 11:21:00,790 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:00,790 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:00,791 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:00,791 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:00,791 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:00,805 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:01,134 INFO L146 ILogger]: Checked inductivity of 1491 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:01,134 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:01,134 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:01,144 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:01,821 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-05-23 11:21:01,822 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:01,824 INFO L146 ILogger]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:21:01,826 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:01,869 INFO L146 ILogger]: Checked inductivity of 1491 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:01,889 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:01,889 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:21:01,889 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:21:01,890 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:21:01,890 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:21:01,890 INFO L146 ILogger]: Start difference. First operand 174 states and 175 transitions. Second operand 25 states. [2019-05-23 11:21:02,116 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:02,116 INFO L146 ILogger]: Finished difference Result 205 states and 207 transitions. [2019-05-23 11:21:02,117 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:21:02,117 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 167 [2019-05-23 11:21:02,118 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:02,119 INFO L146 ILogger]: With dead ends: 205 [2019-05-23 11:21:02,119 INFO L146 ILogger]: Without dead ends: 187 [2019-05-23 11:21:02,119 INFO L146 ILogger]: 0 DeclaredPredicates, 190 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:21:02,120 INFO L146 ILogger]: Start minimizeSevpa. Operand 187 states. [2019-05-23 11:21:02,122 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 187 to 181. [2019-05-23 11:21:02,122 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:21:02,123 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2019-05-23 11:21:02,123 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 167 [2019-05-23 11:21:02,123 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:02,123 INFO L146 ILogger]: Abstraction has 181 states and 182 transitions. [2019-05-23 11:21:02,123 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:21:02,123 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 182 transitions. [2019-05-23 11:21:02,124 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 175 [2019-05-23 11:21:02,124 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:02,124 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:02,124 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:02,124 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:02,124 INFO L146 ILogger]: Analyzing trace with hash -1648927394, now seen corresponding path program 22 times [2019-05-23 11:21:02,125 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:02,125 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:02,125 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:02,125 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:02,125 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:02,140 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:03,678 INFO L146 ILogger]: Checked inductivity of 1639 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:03,678 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:03,678 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:03,686 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:06,528 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:06,529 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:06,531 INFO L146 ILogger]: Trace formula consists of 274 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:21:06,533 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:06,588 INFO L146 ILogger]: Checked inductivity of 1639 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:06,608 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:06,608 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:21:06,609 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:21:06,609 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:21:06,609 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:21:06,609 INFO L146 ILogger]: Start difference. First operand 181 states and 182 transitions. Second operand 26 states. [2019-05-23 11:21:06,859 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:06,860 INFO L146 ILogger]: Finished difference Result 212 states and 214 transitions. [2019-05-23 11:21:06,861 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:21:06,861 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 174 [2019-05-23 11:21:06,861 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:06,862 INFO L146 ILogger]: With dead ends: 212 [2019-05-23 11:21:06,862 INFO L146 ILogger]: Without dead ends: 194 [2019-05-23 11:21:06,863 INFO L146 ILogger]: 0 DeclaredPredicates, 198 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:21:06,863 INFO L146 ILogger]: Start minimizeSevpa. Operand 194 states. [2019-05-23 11:21:06,866 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 194 to 188. [2019-05-23 11:21:06,866 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:21:06,866 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 189 transitions. [2019-05-23 11:21:06,867 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 189 transitions. Word has length 174 [2019-05-23 11:21:06,867 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:06,867 INFO L146 ILogger]: Abstraction has 188 states and 189 transitions. [2019-05-23 11:21:06,867 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:21:06,867 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 189 transitions. [2019-05-23 11:21:06,868 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 182 [2019-05-23 11:21:06,868 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:06,868 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:06,869 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:06,869 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:06,869 INFO L146 ILogger]: Analyzing trace with hash -2136214136, now seen corresponding path program 23 times [2019-05-23 11:21:06,869 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:06,869 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:06,870 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:06,870 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:06,870 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:06,886 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:07,363 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:07,363 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:07,363 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:07,372 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:08,684 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-05-23 11:21:08,684 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:08,689 INFO L146 ILogger]: Trace formula consists of 284 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:21:08,691 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:08,741 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:08,761 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:08,761 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:21:08,761 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:21:08,762 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:21:08,762 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:21:08,762 INFO L146 ILogger]: Start difference. First operand 188 states and 189 transitions. Second operand 27 states. [2019-05-23 11:21:08,969 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:08,969 INFO L146 ILogger]: Finished difference Result 219 states and 221 transitions. [2019-05-23 11:21:08,970 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:21:08,970 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 181 [2019-05-23 11:21:08,970 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:08,971 INFO L146 ILogger]: With dead ends: 219 [2019-05-23 11:21:08,972 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:21:08,972 INFO L146 ILogger]: 0 DeclaredPredicates, 206 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:21:08,973 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:21:08,976 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 195. [2019-05-23 11:21:08,976 INFO L146 ILogger]: Start removeUnreachable. Operand 195 states. [2019-05-23 11:21:08,977 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2019-05-23 11:21:08,977 INFO L146 ILogger]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 181 [2019-05-23 11:21:08,978 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:08,978 INFO L146 ILogger]: Abstraction has 195 states and 196 transitions. [2019-05-23 11:21:08,978 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:21:08,978 INFO L146 ILogger]: Start isEmpty. Operand 195 states and 196 transitions. [2019-05-23 11:21:08,979 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 189 [2019-05-23 11:21:08,979 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:08,979 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:08,979 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:08,980 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:08,980 INFO L146 ILogger]: Analyzing trace with hash -523388386, now seen corresponding path program 24 times [2019-05-23 11:21:08,980 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:08,980 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:08,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:08,981 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:08,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:08,996 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:10,147 INFO L146 ILogger]: Checked inductivity of 1956 backedges. 0 proven. 1956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:10,148 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:10,148 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:10,157 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:13,035 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-05-23 11:21:13,035 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:13,041 INFO L146 ILogger]: Trace formula consists of 294 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:21:13,044 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:13,189 INFO L146 ILogger]: Checked inductivity of 1956 backedges. 0 proven. 1956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:13,221 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:13,221 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-05-23 11:21:13,222 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:21:13,222 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:21:13,223 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:21:13,223 INFO L146 ILogger]: Start difference. First operand 195 states and 196 transitions. Second operand 28 states. [2019-05-23 11:21:14,422 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:14,422 INFO L146 ILogger]: Finished difference Result 226 states and 228 transitions. [2019-05-23 11:21:14,422 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:21:14,423 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 188 [2019-05-23 11:21:14,423 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:14,424 INFO L146 ILogger]: With dead ends: 226 [2019-05-23 11:21:14,424 INFO L146 ILogger]: Without dead ends: 208 [2019-05-23 11:21:14,425 INFO L146 ILogger]: 0 DeclaredPredicates, 214 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:21:14,425 INFO L146 ILogger]: Start minimizeSevpa. Operand 208 states. [2019-05-23 11:21:14,429 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 208 to 202. [2019-05-23 11:21:14,429 INFO L146 ILogger]: Start removeUnreachable. Operand 202 states. [2019-05-23 11:21:14,430 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2019-05-23 11:21:14,430 INFO L146 ILogger]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 188 [2019-05-23 11:21:14,430 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:14,431 INFO L146 ILogger]: Abstraction has 202 states and 203 transitions. [2019-05-23 11:21:14,431 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:21:14,431 INFO L146 ILogger]: Start isEmpty. Operand 202 states and 203 transitions. [2019-05-23 11:21:14,432 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 196 [2019-05-23 11:21:14,432 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:14,432 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:14,432 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:14,433 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:14,433 INFO L146 ILogger]: Analyzing trace with hash -1915240248, now seen corresponding path program 25 times [2019-05-23 11:21:14,433 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:14,433 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:14,434 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:14,434 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:14,434 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:14,451 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:15,430 INFO L146 ILogger]: Checked inductivity of 2125 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:15,430 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:15,430 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:15,438 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:15,486 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:15,487 INFO L146 ILogger]: Trace formula consists of 304 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:21:15,490 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:15,558 INFO L146 ILogger]: Checked inductivity of 2125 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:15,577 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:15,577 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:21:15,577 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:21:15,578 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:21:15,578 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:21:15,578 INFO L146 ILogger]: Start difference. First operand 202 states and 203 transitions. Second operand 29 states. [2019-05-23 11:21:16,946 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:16,946 INFO L146 ILogger]: Finished difference Result 233 states and 235 transitions. [2019-05-23 11:21:16,946 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:21:16,947 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 195 [2019-05-23 11:21:16,947 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:16,948 INFO L146 ILogger]: With dead ends: 233 [2019-05-23 11:21:16,948 INFO L146 ILogger]: Without dead ends: 215 [2019-05-23 11:21:16,949 INFO L146 ILogger]: 0 DeclaredPredicates, 222 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:21:16,949 INFO L146 ILogger]: Start minimizeSevpa. Operand 215 states. [2019-05-23 11:21:16,953 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 215 to 209. [2019-05-23 11:21:16,953 INFO L146 ILogger]: Start removeUnreachable. Operand 209 states. [2019-05-23 11:21:16,954 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2019-05-23 11:21:16,954 INFO L146 ILogger]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 195 [2019-05-23 11:21:16,954 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:16,955 INFO L146 ILogger]: Abstraction has 209 states and 210 transitions. [2019-05-23 11:21:16,955 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:21:16,955 INFO L146 ILogger]: Start isEmpty. Operand 209 states and 210 transitions. [2019-05-23 11:21:16,956 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 203 [2019-05-23 11:21:16,956 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:16,956 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:16,956 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:16,956 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:16,957 INFO L146 ILogger]: Analyzing trace with hash 1143129822, now seen corresponding path program 26 times [2019-05-23 11:21:16,957 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:16,957 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:16,957 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:16,958 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:16,958 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:16,974 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:18,291 INFO L146 ILogger]: Checked inductivity of 2301 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:18,291 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:18,291 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:18,299 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:18,350 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:18,351 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:18,352 INFO L146 ILogger]: Trace formula consists of 314 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:21:18,354 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:18,427 INFO L146 ILogger]: Checked inductivity of 2301 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:18,446 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:18,446 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-05-23 11:21:18,447 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:21:18,447 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:21:18,447 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:21:18,448 INFO L146 ILogger]: Start difference. First operand 209 states and 210 transitions. Second operand 30 states. [2019-05-23 11:21:18,701 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:18,701 INFO L146 ILogger]: Finished difference Result 240 states and 242 transitions. [2019-05-23 11:21:18,701 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:21:18,702 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 202 [2019-05-23 11:21:18,702 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:18,703 INFO L146 ILogger]: With dead ends: 240 [2019-05-23 11:21:18,703 INFO L146 ILogger]: Without dead ends: 222 [2019-05-23 11:21:18,704 INFO L146 ILogger]: 0 DeclaredPredicates, 230 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:21:18,704 INFO L146 ILogger]: Start minimizeSevpa. Operand 222 states. [2019-05-23 11:21:18,707 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 222 to 216. [2019-05-23 11:21:18,707 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:21:18,708 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2019-05-23 11:21:18,708 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 202 [2019-05-23 11:21:18,709 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:18,709 INFO L146 ILogger]: Abstraction has 216 states and 217 transitions. [2019-05-23 11:21:18,709 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:21:18,709 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 217 transitions. [2019-05-23 11:21:18,710 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 210 [2019-05-23 11:21:18,710 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:18,710 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:18,711 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:18,711 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:18,711 INFO L146 ILogger]: Analyzing trace with hash 668916744, now seen corresponding path program 27 times [2019-05-23 11:21:18,711 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:18,711 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:18,712 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:18,712 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:18,712 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:18,730 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:19,851 INFO L146 ILogger]: Checked inductivity of 2484 backedges. 0 proven. 2484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:19,851 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:19,851 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:19,861 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:22,562 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2019-05-23 11:21:22,563 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:22,568 INFO L146 ILogger]: Trace formula consists of 324 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:21:22,570 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:22,664 INFO L146 ILogger]: Checked inductivity of 2484 backedges. 0 proven. 2484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:22,684 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:22,684 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:21:22,685 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:21:22,685 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:21:22,685 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:21:22,685 INFO L146 ILogger]: Start difference. First operand 216 states and 217 transitions. Second operand 31 states. [2019-05-23 11:21:22,960 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:22,961 INFO L146 ILogger]: Finished difference Result 247 states and 249 transitions. [2019-05-23 11:21:22,961 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:21:22,961 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 209 [2019-05-23 11:21:22,962 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:22,966 INFO L146 ILogger]: With dead ends: 247 [2019-05-23 11:21:22,966 INFO L146 ILogger]: Without dead ends: 229 [2019-05-23 11:21:22,967 INFO L146 ILogger]: 0 DeclaredPredicates, 238 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:21:22,967 INFO L146 ILogger]: Start minimizeSevpa. Operand 229 states. [2019-05-23 11:21:22,970 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 229 to 223. [2019-05-23 11:21:22,970 INFO L146 ILogger]: Start removeUnreachable. Operand 223 states. [2019-05-23 11:21:22,971 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2019-05-23 11:21:22,971 INFO L146 ILogger]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 209 [2019-05-23 11:21:22,971 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:22,971 INFO L146 ILogger]: Abstraction has 223 states and 224 transitions. [2019-05-23 11:21:22,971 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:21:22,972 INFO L146 ILogger]: Start isEmpty. Operand 223 states and 224 transitions. [2019-05-23 11:21:22,972 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 217 [2019-05-23 11:21:22,973 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:22,973 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:22,973 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:22,973 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:22,973 INFO L146 ILogger]: Analyzing trace with hash 1547862942, now seen corresponding path program 28 times [2019-05-23 11:21:22,974 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:22,976 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:22,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:22,977 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:22,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:22,998 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:24,205 INFO L146 ILogger]: Checked inductivity of 2674 backedges. 0 proven. 2674 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:24,206 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:24,206 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:24,214 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:25,276 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:25,276 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:25,280 INFO L146 ILogger]: Trace formula consists of 334 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:21:25,283 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:25,342 INFO L146 ILogger]: Checked inductivity of 2674 backedges. 0 proven. 2674 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:25,364 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:25,364 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:21:25,364 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:21:25,365 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:21:25,365 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:21:25,365 INFO L146 ILogger]: Start difference. First operand 223 states and 224 transitions. Second operand 32 states. [2019-05-23 11:21:25,640 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:25,641 INFO L146 ILogger]: Finished difference Result 254 states and 256 transitions. [2019-05-23 11:21:25,641 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:21:25,641 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 216 [2019-05-23 11:21:25,641 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:25,642 INFO L146 ILogger]: With dead ends: 254 [2019-05-23 11:21:25,642 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:21:25,644 INFO L146 ILogger]: 0 DeclaredPredicates, 246 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:21:25,644 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:21:25,647 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 230. [2019-05-23 11:21:25,647 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:21:25,648 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2019-05-23 11:21:25,648 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 216 [2019-05-23 11:21:25,648 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:25,648 INFO L146 ILogger]: Abstraction has 230 states and 231 transitions. [2019-05-23 11:21:25,648 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:21:25,648 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 231 transitions. [2019-05-23 11:21:25,649 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 224 [2019-05-23 11:21:25,649 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:25,650 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:25,650 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:25,650 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:25,650 INFO L146 ILogger]: Analyzing trace with hash -994752696, now seen corresponding path program 29 times [2019-05-23 11:21:25,650 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:25,651 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:25,651 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:25,651 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:25,651 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:25,670 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:26,565 INFO L146 ILogger]: Checked inductivity of 2871 backedges. 0 proven. 2871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:26,565 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:26,565 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:26,575 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:27,282 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-05-23 11:21:27,282 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:27,286 INFO L146 ILogger]: Trace formula consists of 344 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:21:27,289 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:27,439 INFO L146 ILogger]: Checked inductivity of 2871 backedges. 0 proven. 2871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:27,471 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:27,471 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:21:27,472 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:21:27,472 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:21:27,473 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:27,473 INFO L146 ILogger]: Start difference. First operand 230 states and 231 transitions. Second operand 33 states. [2019-05-23 11:21:27,761 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:27,762 INFO L146 ILogger]: Finished difference Result 261 states and 263 transitions. [2019-05-23 11:21:27,762 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:21:27,762 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 223 [2019-05-23 11:21:27,763 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:27,764 INFO L146 ILogger]: With dead ends: 261 [2019-05-23 11:21:27,764 INFO L146 ILogger]: Without dead ends: 243 [2019-05-23 11:21:27,765 INFO L146 ILogger]: 0 DeclaredPredicates, 254 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:27,765 INFO L146 ILogger]: Start minimizeSevpa. Operand 243 states. [2019-05-23 11:21:27,769 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 243 to 237. [2019-05-23 11:21:27,769 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:21:27,770 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2019-05-23 11:21:27,770 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 223 [2019-05-23 11:21:27,770 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:27,770 INFO L146 ILogger]: Abstraction has 237 states and 238 transitions. [2019-05-23 11:21:27,770 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:21:27,771 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 238 transitions. [2019-05-23 11:21:27,772 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 231 [2019-05-23 11:21:27,772 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:27,772 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:27,772 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:27,773 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:27,773 INFO L146 ILogger]: Analyzing trace with hash -658968482, now seen corresponding path program 30 times [2019-05-23 11:21:27,773 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:27,773 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:27,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:27,774 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:27,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:27,792 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:28,389 INFO L146 ILogger]: Checked inductivity of 3075 backedges. 0 proven. 3075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:28,389 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:28,389 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:28,398 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:40,709 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2019-05-23 11:21:40,709 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:40,720 INFO L146 ILogger]: Trace formula consists of 354 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:21:40,722 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:40,789 INFO L146 ILogger]: Checked inductivity of 3075 backedges. 0 proven. 3075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:40,811 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:40,811 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2019-05-23 11:21:40,811 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:21:40,812 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:21:40,812 INFO L146 ILogger]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:21:40,812 INFO L146 ILogger]: Start difference. First operand 237 states and 238 transitions. Second operand 34 states. [2019-05-23 11:21:41,077 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:41,077 INFO L146 ILogger]: Finished difference Result 268 states and 270 transitions. [2019-05-23 11:21:41,077 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:21:41,078 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 230 [2019-05-23 11:21:41,078 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:41,080 INFO L146 ILogger]: With dead ends: 268 [2019-05-23 11:21:41,080 INFO L146 ILogger]: Without dead ends: 250 [2019-05-23 11:21:41,081 INFO L146 ILogger]: 0 DeclaredPredicates, 262 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:21:41,081 INFO L146 ILogger]: Start minimizeSevpa. Operand 250 states. [2019-05-23 11:21:41,084 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 250 to 244. [2019-05-23 11:21:41,085 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:21:41,085 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 245 transitions. [2019-05-23 11:21:41,085 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 245 transitions. Word has length 230 [2019-05-23 11:21:41,086 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:41,086 INFO L146 ILogger]: Abstraction has 244 states and 245 transitions. [2019-05-23 11:21:41,086 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:21:41,086 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 245 transitions. [2019-05-23 11:21:41,087 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 238 [2019-05-23 11:21:41,087 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:41,087 INFO L146 ILogger]: trace histogram [31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:41,088 INFO L146 ILogger]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:41,088 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:41,088 INFO L146 ILogger]: Analyzing trace with hash 1599013512, now seen corresponding path program 31 times [2019-05-23 11:21:41,088 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:41,088 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:41,089 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:41,089 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:41,089 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:41,107 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:41,743 INFO L146 ILogger]: Checked inductivity of 3286 backedges. 0 proven. 3286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:41,743 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:41,743 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:41,754 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:41,806 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:41,807 INFO L146 ILogger]: Trace formula consists of 364 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:21:41,809 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:41,868 INFO L146 ILogger]: Checked inductivity of 3286 backedges. 0 proven. 3286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:41,886 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:41,887 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2019-05-23 11:21:41,887 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:21:41,888 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:21:41,888 INFO L146 ILogger]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:21:41,888 INFO L146 ILogger]: Start difference. First operand 244 states and 245 transitions. Second operand 35 states. [2019-05-23 11:21:42,174 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:42,174 INFO L146 ILogger]: Finished difference Result 275 states and 277 transitions. [2019-05-23 11:21:42,175 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:21:42,175 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 237 [2019-05-23 11:21:42,175 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:42,176 INFO L146 ILogger]: With dead ends: 275 [2019-05-23 11:21:42,176 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:21:42,177 INFO L146 ILogger]: 0 DeclaredPredicates, 270 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:21:42,177 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:21:42,187 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 251. [2019-05-23 11:21:42,187 INFO L146 ILogger]: Start removeUnreachable. Operand 251 states. [2019-05-23 11:21:42,187 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2019-05-23 11:21:42,188 INFO L146 ILogger]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 237 [2019-05-23 11:21:42,188 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:42,188 INFO L146 ILogger]: Abstraction has 251 states and 252 transitions. [2019-05-23 11:21:42,188 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:21:42,188 INFO L146 ILogger]: Start isEmpty. Operand 251 states and 252 transitions. [2019-05-23 11:21:42,189 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 245 [2019-05-23 11:21:42,190 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:42,190 INFO L146 ILogger]: trace histogram [32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:42,190 INFO L146 ILogger]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:42,190 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:42,190 INFO L146 ILogger]: Analyzing trace with hash 1142033694, now seen corresponding path program 32 times [2019-05-23 11:21:42,191 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:42,191 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:42,191 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:42,191 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:42,192 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:42,210 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:42,959 INFO L146 ILogger]: Checked inductivity of 3504 backedges. 0 proven. 3504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:42,959 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:42,959 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:42,969 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:43,050 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:43,050 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:43,052 INFO L146 ILogger]: Trace formula consists of 374 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:21:43,055 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:43,147 INFO L146 ILogger]: Checked inductivity of 3504 backedges. 0 proven. 3504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:43,166 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:43,167 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2019-05-23 11:21:43,167 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:21:43,167 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:21:43,168 INFO L146 ILogger]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:21:43,168 INFO L146 ILogger]: Start difference. First operand 251 states and 252 transitions. Second operand 36 states. [2019-05-23 11:21:43,479 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:43,480 INFO L146 ILogger]: Finished difference Result 282 states and 284 transitions. [2019-05-23 11:21:43,480 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:21:43,480 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 244 [2019-05-23 11:21:43,480 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:43,481 INFO L146 ILogger]: With dead ends: 282 [2019-05-23 11:21:43,481 INFO L146 ILogger]: Without dead ends: 264 [2019-05-23 11:21:43,482 INFO L146 ILogger]: 0 DeclaredPredicates, 278 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:21:43,482 INFO L146 ILogger]: Start minimizeSevpa. Operand 264 states. [2019-05-23 11:21:43,485 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 264 to 258. [2019-05-23 11:21:43,485 INFO L146 ILogger]: Start removeUnreachable. Operand 258 states. [2019-05-23 11:21:43,486 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 258 states to 258 states and 259 transitions. [2019-05-23 11:21:43,486 INFO L146 ILogger]: Start accepts. Automaton has 258 states and 259 transitions. Word has length 244 [2019-05-23 11:21:43,486 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:43,486 INFO L146 ILogger]: Abstraction has 258 states and 259 transitions. [2019-05-23 11:21:43,486 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:21:43,486 INFO L146 ILogger]: Start isEmpty. Operand 258 states and 259 transitions. [2019-05-23 11:21:43,487 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 252 [2019-05-23 11:21:43,487 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:43,488 INFO L146 ILogger]: trace histogram [33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:43,488 INFO L146 ILogger]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:43,488 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:43,488 INFO L146 ILogger]: Analyzing trace with hash -1214247480, now seen corresponding path program 33 times [2019-05-23 11:21:43,488 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:43,488 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:43,489 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:43,489 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:43,489 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:43,508 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:44,168 INFO L146 ILogger]: Checked inductivity of 3729 backedges. 0 proven. 3729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:44,168 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:44,168 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:44,176 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2