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_copyInit_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:17:55,025 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:17:55,027 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:17:55,038 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:17:55,039 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:17:55,040 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:17:55,041 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:17:55,043 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:17:55,044 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:17:55,045 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:17:55,046 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:17:55,046 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:17:55,047 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:17:55,048 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:17:55,050 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:17:55,050 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:17:55,051 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:17:55,053 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:17:55,055 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:17:55,056 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:17:55,058 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:17:55,059 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:17:55,061 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:17:55,062 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:17:55,062 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:17:55,063 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:17:55,063 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:17:55,064 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:17:55,064 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:17:55,065 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:17:55,066 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:17:55,067 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:17:55,068 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:17:55,068 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:17:55,069 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:17:55,069 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:17:55,069 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:17:55,070 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:17:55,071 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:17:55,071 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:17:55,085 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:17:55,086 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:17:55,087 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:17:55,087 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:17:55,087 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:17:55,088 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:17:55,089 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:17:55,089 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:17:55,089 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:17:55,089 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:17:55,090 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:17:55,090 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:17:55,090 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:17:55,090 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:17:55,090 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:17:55,091 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:17:55,092 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:17:55,092 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:17:55,092 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:17:55,092 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:17:55,092 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:17:55,093 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:17:55,093 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:17:55,093 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:17:55,093 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:17:55,093 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:17:55,094 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:17:55,094 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:17:55,094 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 11:17:55,134 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:17:55,145 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:17:55,147 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:17:55,148 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:17:55,149 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:17:55,149 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copyInit_true-unreach-call_ground.i [2019-05-23 11:17:55,197 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d4e5245/1ad61473b5ba4d55b90cab49269be6df/FLAGc4fd49753 [2019-05-23 11:17:55,618 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:17:55,619 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copyInit_true-unreach-call_ground.i [2019-05-23 11:17:55,625 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d4e5245/1ad61473b5ba4d55b90cab49269be6df/FLAGc4fd49753 [2019-05-23 11:17:55,966 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d4e5245/1ad61473b5ba4d55b90cab49269be6df [2019-05-23 11:17:55,975 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:17:55,976 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:17:55,977 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:55,978 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:17:55,981 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:17:55,982 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,985 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e33f2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:55, skipping insertion in model container [2019-05-23 11:17:55,986 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:55" (1/1) ... [2019-05-23 11:17:55,994 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:17:56,013 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:17:56,215 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:56,223 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:17:56,256 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:56,288 INFO L146 ILogger]: Completed translation [2019-05-23 11:17:56,288 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56 WrapperNode [2019-05-23 11:17:56,288 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:56,289 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:56,290 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:17:56,290 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:17:56,303 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (1/1) ... [2019-05-23 11:17:56,321 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (1/1) ... [2019-05-23 11:17:56,354 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:56,355 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:17:56,357 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:17:56,357 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:17:56,368 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (1/1) ... [2019-05-23 11:17:56,369 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (1/1) ... [2019-05-23 11:17:56,371 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (1/1) ... [2019-05-23 11:17:56,371 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (1/1) ... [2019-05-23 11:17:56,378 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (1/1) ... [2019-05-23 11:17:56,389 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (1/1) ... [2019-05-23 11:17:56,390 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (1/1) ... [2019-05-23 11:17:56,399 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:17:56,400 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:17:56,400 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:17:56,400 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:17:56,401 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (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 11:17:56,590 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:17:56,590 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:17:56,590 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:17:56,591 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:17:56,591 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:17:56,591 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:17:57,024 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:17:57,024 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:17:57,025 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:57 BoogieIcfgContainer [2019-05-23 11:17:57,025 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:17:57,026 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:17:57,026 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:17:57,029 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:17:57,029 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:17:55" (1/3) ... [2019-05-23 11:17:57,030 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6314b1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:57, skipping insertion in model container [2019-05-23 11:17:57,030 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:56" (2/3) ... [2019-05-23 11:17:57,031 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6314b1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:57, skipping insertion in model container [2019-05-23 11:17:57,031 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:57" (3/3) ... [2019-05-23 11:17:57,033 INFO L146 ILogger]: Analyzing ICFG standard_copyInit_true-unreach-call_ground.i [2019-05-23 11:17:57,042 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:17:57,050 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:17:57,067 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:17:57,094 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:17:57,095 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:17:57,095 INFO L146 ILogger]: Hoare is true [2019-05-23 11:17:57,095 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:17:57,095 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:17:57,095 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:17:57,096 INFO L146 ILogger]: Difference is false [2019-05-23 11:17:57,096 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:17:57,096 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:17:57,109 INFO L146 ILogger]: Start isEmpty. Operand 40 states. [2019-05-23 11:17:57,116 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 20 [2019-05-23 11:17:57,116 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:57,117 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:57,121 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:57,125 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:57,126 INFO L146 ILogger]: Analyzing trace with hash -870459885, now seen corresponding path program 1 times [2019-05-23 11:17:57,127 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:57,128 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:57,174 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,174 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:57,174 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,217 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:57,256 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 11:17:57,259 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:57,259 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:17:57,263 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:17:57,276 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:17:57,277 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:17:57,279 INFO L146 ILogger]: Start difference. First operand 40 states. Second operand 2 states. [2019-05-23 11:17:57,298 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:57,298 INFO L146 ILogger]: Finished difference Result 70 states and 80 transitions. [2019-05-23 11:17:57,299 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:17:57,300 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 19 [2019-05-23 11:17:57,301 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:57,311 INFO L146 ILogger]: With dead ends: 70 [2019-05-23 11:17:57,312 INFO L146 ILogger]: Without dead ends: 32 [2019-05-23 11:17:57,315 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 11:17:57,332 INFO L146 ILogger]: Start minimizeSevpa. Operand 32 states. [2019-05-23 11:17:57,344 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-05-23 11:17:57,345 INFO L146 ILogger]: Start removeUnreachable. Operand 32 states. [2019-05-23 11:17:57,347 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2019-05-23 11:17:57,348 INFO L146 ILogger]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 19 [2019-05-23 11:17:57,348 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:57,348 INFO L146 ILogger]: Abstraction has 32 states and 34 transitions. [2019-05-23 11:17:57,349 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:17:57,349 INFO L146 ILogger]: Start isEmpty. Operand 32 states and 34 transitions. [2019-05-23 11:17:57,350 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 20 [2019-05-23 11:17:57,350 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:57,350 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:57,350 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:57,351 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:57,351 INFO L146 ILogger]: Analyzing trace with hash 516692356, now seen corresponding path program 1 times [2019-05-23 11:17:57,351 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:57,351 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:57,352 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,353 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:57,353 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,367 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:57,415 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 11:17:57,416 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:57,416 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:17:57,417 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:17:57,421 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:17:57,421 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:17:57,422 INFO L146 ILogger]: Start difference. First operand 32 states and 34 transitions. Second operand 3 states. [2019-05-23 11:17:57,533 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:57,533 INFO L146 ILogger]: Finished difference Result 63 states and 68 transitions. [2019-05-23 11:17:57,534 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:17:57,534 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 19 [2019-05-23 11:17:57,534 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:57,535 INFO L146 ILogger]: With dead ends: 63 [2019-05-23 11:17:57,535 INFO L146 ILogger]: Without dead ends: 41 [2019-05-23 11:17:57,536 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 11:17:57,537 INFO L146 ILogger]: Start minimizeSevpa. Operand 41 states. [2019-05-23 11:17:57,541 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 41 to 34. [2019-05-23 11:17:57,541 INFO L146 ILogger]: Start removeUnreachable. Operand 34 states. [2019-05-23 11:17:57,542 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-05-23 11:17:57,542 INFO L146 ILogger]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 19 [2019-05-23 11:17:57,542 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:57,543 INFO L146 ILogger]: Abstraction has 34 states and 36 transitions. [2019-05-23 11:17:57,543 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:17:57,543 INFO L146 ILogger]: Start isEmpty. Operand 34 states and 36 transitions. [2019-05-23 11:17:57,544 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:17:57,544 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:57,544 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:57,544 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:57,545 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:57,545 INFO L146 ILogger]: Analyzing trace with hash 1499012613, now seen corresponding path program 1 times [2019-05-23 11:17:57,545 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:57,545 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:57,546 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,547 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:57,547 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,569 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:57,686 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:17:57,686 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:57,687 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 11:17:57,700 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:57,737 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:57,739 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:17:57,745 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:57,786 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:17:57,809 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:57,809 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-05-23 11:17:57,810 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:17:57,810 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:17:57,811 INFO L146 ILogger]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:17:57,811 INFO L146 ILogger]: Start difference. First operand 34 states and 36 transitions. Second operand 6 states. [2019-05-23 11:17:58,209 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:58,209 INFO L146 ILogger]: Finished difference Result 74 states and 79 transitions. [2019-05-23 11:17:58,210 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:17:58,210 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 29 [2019-05-23 11:17:58,211 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:58,211 INFO L146 ILogger]: With dead ends: 74 [2019-05-23 11:17:58,212 INFO L146 ILogger]: Without dead ends: 51 [2019-05-23 11:17:58,212 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:17:58,213 INFO L146 ILogger]: Start minimizeSevpa. Operand 51 states. [2019-05-23 11:17:58,217 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 51 to 44. [2019-05-23 11:17:58,217 INFO L146 ILogger]: Start removeUnreachable. Operand 44 states. [2019-05-23 11:17:58,218 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2019-05-23 11:17:58,219 INFO L146 ILogger]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 29 [2019-05-23 11:17:58,219 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:58,219 INFO L146 ILogger]: Abstraction has 44 states and 46 transitions. [2019-05-23 11:17:58,219 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:17:58,219 INFO L146 ILogger]: Start isEmpty. Operand 44 states and 46 transitions. [2019-05-23 11:17:58,220 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:17:58,220 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:58,221 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:58,221 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:58,221 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:58,222 INFO L146 ILogger]: Analyzing trace with hash 582414372, now seen corresponding path program 2 times [2019-05-23 11:17:58,222 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:58,222 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:58,223 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:58,223 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:58,223 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:58,243 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:58,384 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:17:58,385 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:58,385 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 11:17:58,401 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:58,445 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:58,445 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:58,446 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:58,448 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:58,482 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:17:58,504 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:58,504 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2019-05-23 11:17:58,505 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:17:58,506 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:17:58,506 INFO L146 ILogger]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:17:58,506 INFO L146 ILogger]: Start difference. First operand 44 states and 46 transitions. Second operand 8 states. [2019-05-23 11:17:58,856 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:58,856 INFO L146 ILogger]: Finished difference Result 91 states and 96 transitions. [2019-05-23 11:17:58,856 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:17:58,856 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 39 [2019-05-23 11:17:58,857 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:58,857 INFO L146 ILogger]: With dead ends: 91 [2019-05-23 11:17:58,858 INFO L146 ILogger]: Without dead ends: 61 [2019-05-23 11:17:58,859 INFO L146 ILogger]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:17:58,859 INFO L146 ILogger]: Start minimizeSevpa. Operand 61 states. [2019-05-23 11:17:58,865 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 61 to 54. [2019-05-23 11:17:58,865 INFO L146 ILogger]: Start removeUnreachable. Operand 54 states. [2019-05-23 11:17:58,866 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2019-05-23 11:17:58,866 INFO L146 ILogger]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 39 [2019-05-23 11:17:58,866 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:58,866 INFO L146 ILogger]: Abstraction has 54 states and 56 transitions. [2019-05-23 11:17:58,866 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:17:58,867 INFO L146 ILogger]: Start isEmpty. Operand 54 states and 56 transitions. [2019-05-23 11:17:58,868 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:17:58,868 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:58,868 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:58,868 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:58,869 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:58,869 INFO L146 ILogger]: Analyzing trace with hash 119527141, now seen corresponding path program 3 times [2019-05-23 11:17:58,869 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:58,869 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:58,870 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:58,870 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:58,871 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:58,891 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,303 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:17:59,304 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:59,304 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 11:17:59,322 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:59,369 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:17:59,369 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,370 INFO L146 ILogger]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:59,372 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:59,473 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:17:59,496 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:59,497 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:17:59,497 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:17:59,497 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:17:59,498 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:17:59,498 INFO L146 ILogger]: Start difference. First operand 54 states and 56 transitions. Second operand 11 states. [2019-05-23 11:17:59,756 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:59,756 INFO L146 ILogger]: Finished difference Result 108 states and 113 transitions. [2019-05-23 11:17:59,758 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:17:59,758 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 49 [2019-05-23 11:17:59,758 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:59,759 INFO L146 ILogger]: With dead ends: 108 [2019-05-23 11:17:59,760 INFO L146 ILogger]: Without dead ends: 71 [2019-05-23 11:17:59,760 INFO L146 ILogger]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:17:59,761 INFO L146 ILogger]: Start minimizeSevpa. Operand 71 states. [2019-05-23 11:17:59,767 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 71 to 64. [2019-05-23 11:17:59,768 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:17:59,768 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2019-05-23 11:17:59,769 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 49 [2019-05-23 11:17:59,769 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:59,769 INFO L146 ILogger]: Abstraction has 64 states and 66 transitions. [2019-05-23 11:17:59,769 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:17:59,769 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 66 transitions. [2019-05-23 11:17:59,771 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:17:59,771 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:59,771 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:59,771 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:59,772 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:59,773 INFO L146 ILogger]: Analyzing trace with hash -1026793788, now seen corresponding path program 4 times [2019-05-23 11:17:59,773 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:59,773 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:59,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:59,774 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:59,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:59,795 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,996 INFO L146 ILogger]: Checked inductivity of 68 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:59,997 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:59,997 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:00,007 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:00,056 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:00,056 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:00,057 INFO L146 ILogger]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:00,060 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:00,106 INFO L146 ILogger]: Checked inductivity of 68 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:18:00,127 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:00,127 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 12 [2019-05-23 11:18:00,127 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:18:00,129 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:18:00,129 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:18:00,130 INFO L146 ILogger]: Start difference. First operand 64 states and 66 transitions. Second operand 12 states. [2019-05-23 11:18:00,858 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:00,859 INFO L146 ILogger]: Finished difference Result 125 states and 130 transitions. [2019-05-23 11:18:00,859 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:18:00,860 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 59 [2019-05-23 11:18:00,860 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:00,862 INFO L146 ILogger]: With dead ends: 125 [2019-05-23 11:18:00,862 INFO L146 ILogger]: Without dead ends: 81 [2019-05-23 11:18:00,863 INFO L146 ILogger]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:18:00,870 INFO L146 ILogger]: Start minimizeSevpa. Operand 81 states. [2019-05-23 11:18:00,881 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 81 to 74. [2019-05-23 11:18:00,882 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:18:00,883 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2019-05-23 11:18:00,883 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 59 [2019-05-23 11:18:00,883 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:00,886 INFO L146 ILogger]: Abstraction has 74 states and 76 transitions. [2019-05-23 11:18:00,886 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:18:00,886 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 76 transitions. [2019-05-23 11:18:00,887 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:18:00,888 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:00,888 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:00,889 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:00,892 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:00,892 INFO L146 ILogger]: Analyzing trace with hash -1344522299, now seen corresponding path program 5 times [2019-05-23 11:18:00,893 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:00,893 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:00,894 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:00,894 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:00,894 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:00,933 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,153 INFO L146 ILogger]: Checked inductivity of 110 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-05-23 11:18:01,154 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:01,154 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:01,165 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:01,248 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:18:01,248 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,249 INFO L146 ILogger]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:18:01,252 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:01,284 INFO L146 ILogger]: Checked inductivity of 110 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:18:01,309 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:01,309 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 14 [2019-05-23 11:18:01,310 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:18:01,310 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:18:01,310 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:18:01,311 INFO L146 ILogger]: Start difference. First operand 74 states and 76 transitions. Second operand 14 states. [2019-05-23 11:18:01,600 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:01,601 INFO L146 ILogger]: Finished difference Result 142 states and 147 transitions. [2019-05-23 11:18:01,601 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:18:01,601 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 69 [2019-05-23 11:18:01,602 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:01,603 INFO L146 ILogger]: With dead ends: 142 [2019-05-23 11:18:01,603 INFO L146 ILogger]: Without dead ends: 91 [2019-05-23 11:18:01,605 INFO L146 ILogger]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:18:01,605 INFO L146 ILogger]: Start minimizeSevpa. Operand 91 states. [2019-05-23 11:18:01,611 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 91 to 84. [2019-05-23 11:18:01,611 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:18:01,612 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2019-05-23 11:18:01,612 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 69 [2019-05-23 11:18:01,612 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:01,612 INFO L146 ILogger]: Abstraction has 84 states and 86 transitions. [2019-05-23 11:18:01,613 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:18:01,613 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 86 transitions. [2019-05-23 11:18:01,614 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:18:01,614 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:01,614 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:01,615 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:01,615 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:01,615 INFO L146 ILogger]: Analyzing trace with hash -429234844, now seen corresponding path program 6 times [2019-05-23 11:18:01,615 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:01,615 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:01,616 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,616 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:01,616 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,635 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,288 INFO L146 ILogger]: Checked inductivity of 162 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:18:02,289 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:02,289 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:02,298 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:02,375 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:18:02,375 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,376 INFO L146 ILogger]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:18:02,380 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:02,433 INFO L146 ILogger]: Checked inductivity of 162 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:18:02,452 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:02,453 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:18:02,453 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:18:02,453 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:18:02,454 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:18:02,454 INFO L146 ILogger]: Start difference. First operand 84 states and 86 transitions. Second operand 17 states. [2019-05-23 11:18:02,849 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:02,850 INFO L146 ILogger]: Finished difference Result 159 states and 164 transitions. [2019-05-23 11:18:02,850 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:18:02,850 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 79 [2019-05-23 11:18:02,851 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:02,852 INFO L146 ILogger]: With dead ends: 159 [2019-05-23 11:18:02,852 INFO L146 ILogger]: Without dead ends: 101 [2019-05-23 11:18:02,853 INFO L146 ILogger]: 0 DeclaredPredicates, 105 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:18:02,853 INFO L146 ILogger]: Start minimizeSevpa. Operand 101 states. [2019-05-23 11:18:02,858 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 101 to 94. [2019-05-23 11:18:02,859 INFO L146 ILogger]: Start removeUnreachable. Operand 94 states. [2019-05-23 11:18:02,859 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2019-05-23 11:18:02,860 INFO L146 ILogger]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 79 [2019-05-23 11:18:02,860 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:02,860 INFO L146 ILogger]: Abstraction has 94 states and 96 transitions. [2019-05-23 11:18:02,860 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:18:02,860 INFO L146 ILogger]: Start isEmpty. Operand 94 states and 96 transitions. [2019-05-23 11:18:02,862 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 90 [2019-05-23 11:18:02,862 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:02,862 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:02,862 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:02,862 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:02,863 INFO L146 ILogger]: Analyzing trace with hash 407912613, now seen corresponding path program 7 times [2019-05-23 11:18:02,863 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:02,863 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:02,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,864 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:02,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,883 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,177 INFO L146 ILogger]: Checked inductivity of 224 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:18:03,178 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:03,178 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:03,191 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:03,217 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,219 INFO L146 ILogger]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:18:03,228 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:03,270 INFO L146 ILogger]: Checked inductivity of 224 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-05-23 11:18:03,291 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:03,292 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 18 [2019-05-23 11:18:03,292 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:18:03,293 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:18:03,293 INFO L146 ILogger]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:18:03,293 INFO L146 ILogger]: Start difference. First operand 94 states and 96 transitions. Second operand 18 states. [2019-05-23 11:18:04,028 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:04,029 INFO L146 ILogger]: Finished difference Result 176 states and 181 transitions. [2019-05-23 11:18:04,029 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:18:04,030 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 89 [2019-05-23 11:18:04,031 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:04,033 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:18:04,033 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:18:04,034 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=329, Invalid=663, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:18:04,035 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:18:04,040 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 104. [2019-05-23 11:18:04,041 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:18:04,041 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2019-05-23 11:18:04,042 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 89 [2019-05-23 11:18:04,042 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:04,042 INFO L146 ILogger]: Abstraction has 104 states and 106 transitions. [2019-05-23 11:18:04,042 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:18:04,042 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 106 transitions. [2019-05-23 11:18:04,046 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:18:04,046 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:04,046 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:04,046 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:04,046 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:04,047 INFO L146 ILogger]: Analyzing trace with hash -2073099260, now seen corresponding path program 8 times [2019-05-23 11:18:04,049 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:04,049 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:04,050 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,050 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:04,050 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,068 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,306 INFO L146 ILogger]: Checked inductivity of 296 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:18:04,306 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:04,306 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:04,317 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:04,344 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:04,344 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,345 INFO L146 ILogger]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:18:04,348 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:04,396 INFO L146 ILogger]: Checked inductivity of 296 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-05-23 11:18:04,415 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:04,416 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 20 [2019-05-23 11:18:04,416 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:18:04,417 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:18:04,417 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:18:04,417 INFO L146 ILogger]: Start difference. First operand 104 states and 106 transitions. Second operand 20 states. [2019-05-23 11:18:04,848 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:04,848 INFO L146 ILogger]: Finished difference Result 193 states and 198 transitions. [2019-05-23 11:18:04,848 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:18:04,848 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 99 [2019-05-23 11:18:04,849 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:04,849 INFO L146 ILogger]: With dead ends: 193 [2019-05-23 11:18:04,849 INFO L146 ILogger]: Without dead ends: 121 [2019-05-23 11:18:04,851 INFO L146 ILogger]: 0 DeclaredPredicates, 133 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=845, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:18:04,851 INFO L146 ILogger]: Start minimizeSevpa. Operand 121 states. [2019-05-23 11:18:04,863 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 121 to 114. [2019-05-23 11:18:04,863 INFO L146 ILogger]: Start removeUnreachable. Operand 114 states. [2019-05-23 11:18:04,864 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2019-05-23 11:18:04,864 INFO L146 ILogger]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 99 [2019-05-23 11:18:04,864 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:04,864 INFO L146 ILogger]: Abstraction has 114 states and 116 transitions. [2019-05-23 11:18:04,864 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:18:04,865 INFO L146 ILogger]: Start isEmpty. Operand 114 states and 116 transitions. [2019-05-23 11:18:04,866 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:18:04,866 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:04,866 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:04,866 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:04,867 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:04,867 INFO L146 ILogger]: Analyzing trace with hash -708972155, now seen corresponding path program 9 times [2019-05-23 11:18:04,867 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:04,867 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:04,868 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,868 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:04,868 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,184 INFO L146 ILogger]: Checked inductivity of 378 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-05-23 11:18:05,185 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:05,185 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:05,194 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:05,562 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:18:05,563 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,564 INFO L146 ILogger]: Trace formula consists of 171 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:18:05,567 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:05,593 INFO L146 ILogger]: Checked inductivity of 378 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2019-05-23 11:18:05,617 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:05,618 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 22 [2019-05-23 11:18:05,618 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:18:05,618 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:18:05,619 INFO L146 ILogger]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:18:05,619 INFO L146 ILogger]: Start difference. First operand 114 states and 116 transitions. Second operand 22 states. [2019-05-23 11:18:06,244 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:06,244 INFO L146 ILogger]: Finished difference Result 210 states and 215 transitions. [2019-05-23 11:18:06,245 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:18:06,246 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 109 [2019-05-23 11:18:06,246 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:06,247 INFO L146 ILogger]: With dead ends: 210 [2019-05-23 11:18:06,247 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:18:06,248 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=511, Invalid=1049, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:18:06,249 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:18:06,253 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 124. [2019-05-23 11:18:06,253 INFO L146 ILogger]: Start removeUnreachable. Operand 124 states. [2019-05-23 11:18:06,254 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2019-05-23 11:18:06,255 INFO L146 ILogger]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 109 [2019-05-23 11:18:06,255 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:06,255 INFO L146 ILogger]: Abstraction has 124 states and 126 transitions. [2019-05-23 11:18:06,255 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:18:06,255 INFO L146 ILogger]: Start isEmpty. Operand 124 states and 126 transitions. [2019-05-23 11:18:06,256 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:18:06,257 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:06,257 INFO L146 ILogger]: trace histogram [10, 10, 10, 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] [2019-05-23 11:18:06,257 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:06,257 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:06,258 INFO L146 ILogger]: Analyzing trace with hash -2093466972, now seen corresponding path program 10 times [2019-05-23 11:18:06,258 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:06,258 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:06,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,259 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:06,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,279 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:06,968 INFO L146 ILogger]: Checked inductivity of 470 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-05-23 11:18:06,968 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:06,968 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:06,988 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:07,041 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:07,042 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,044 INFO L146 ILogger]: Trace formula consists of 185 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:18:07,046 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:07,078 INFO L146 ILogger]: Checked inductivity of 470 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2019-05-23 11:18:07,097 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:07,098 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 24 [2019-05-23 11:18:07,098 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:18:07,098 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:18:07,099 INFO L146 ILogger]: CoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:18:07,099 INFO L146 ILogger]: Start difference. First operand 124 states and 126 transitions. Second operand 24 states. [2019-05-23 11:18:07,770 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:07,770 INFO L146 ILogger]: Finished difference Result 227 states and 232 transitions. [2019-05-23 11:18:07,770 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:18:07,771 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 119 [2019-05-23 11:18:07,771 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:07,772 INFO L146 ILogger]: With dead ends: 227 [2019-05-23 11:18:07,772 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:18:07,774 INFO L146 ILogger]: 0 DeclaredPredicates, 161 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=617, Invalid=1275, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:18:07,774 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:18:07,777 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 134. [2019-05-23 11:18:07,778 INFO L146 ILogger]: Start removeUnreachable. Operand 134 states. [2019-05-23 11:18:07,778 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2019-05-23 11:18:07,778 INFO L146 ILogger]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 119 [2019-05-23 11:18:07,779 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:07,779 INFO L146 ILogger]: Abstraction has 134 states and 136 transitions. [2019-05-23 11:18:07,779 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:18:07,779 INFO L146 ILogger]: Start isEmpty. Operand 134 states and 136 transitions. [2019-05-23 11:18:07,780 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 130 [2019-05-23 11:18:07,780 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:07,781 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:07,781 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:07,781 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:07,781 INFO L146 ILogger]: Analyzing trace with hash 1843874405, now seen corresponding path program 11 times [2019-05-23 11:18:07,781 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:07,782 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:07,782 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:07,782 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:07,782 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:07,801 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:08,119 INFO L146 ILogger]: Checked inductivity of 572 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:18:08,119 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:08,119 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:08,129 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:11,134 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:18:11,135 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:11,140 INFO L146 ILogger]: Trace formula consists of 199 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:18:11,142 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:11,206 INFO L146 ILogger]: Checked inductivity of 572 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:18:11,237 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:11,237 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:18:11,238 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:18:11,238 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:18:11,239 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:18:11,239 INFO L146 ILogger]: Start difference. First operand 134 states and 136 transitions. Second operand 27 states. [2019-05-23 11:18:11,886 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:11,887 INFO L146 ILogger]: Finished difference Result 244 states and 249 transitions. [2019-05-23 11:18:11,887 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:18:11,887 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 129 [2019-05-23 11:18:11,888 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:11,889 INFO L146 ILogger]: With dead ends: 244 [2019-05-23 11:18:11,889 INFO L146 ILogger]: Without dead ends: 151 [2019-05-23 11:18:11,891 INFO L146 ILogger]: 0 DeclaredPredicates, 175 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:18:11,892 INFO L146 ILogger]: Start minimizeSevpa. Operand 151 states. [2019-05-23 11:18:11,895 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 151 to 144. [2019-05-23 11:18:11,895 INFO L146 ILogger]: Start removeUnreachable. Operand 144 states. [2019-05-23 11:18:11,895 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions. [2019-05-23 11:18:11,896 INFO L146 ILogger]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 129 [2019-05-23 11:18:11,896 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:11,896 INFO L146 ILogger]: Abstraction has 144 states and 146 transitions. [2019-05-23 11:18:11,896 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:18:11,896 INFO L146 ILogger]: Start isEmpty. Operand 144 states and 146 transitions. [2019-05-23 11:18:11,897 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 140 [2019-05-23 11:18:11,897 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:11,898 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:11,898 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:11,898 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:11,898 INFO L146 ILogger]: Analyzing trace with hash -1734080188, now seen corresponding path program 12 times [2019-05-23 11:18:11,898 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:11,899 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:11,899 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:11,899 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:11,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:11,915 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:12,802 INFO L146 ILogger]: Checked inductivity of 684 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-05-23 11:18:12,802 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:12,802 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:12,811 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:13,896 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:18:13,897 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:13,901 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:18:13,903 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:14,020 INFO L146 ILogger]: Checked inductivity of 684 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-05-23 11:18:14,052 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:14,052 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:18:14,053 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:18:14,053 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:18:14,054 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:18:14,054 INFO L146 ILogger]: Start difference. First operand 144 states and 146 transitions. Second operand 29 states. [2019-05-23 11:18:14,883 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:14,883 INFO L146 ILogger]: Finished difference Result 261 states and 266 transitions. [2019-05-23 11:18:14,883 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:18:14,883 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 139 [2019-05-23 11:18:14,884 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:14,884 INFO L146 ILogger]: With dead ends: 261 [2019-05-23 11:18:14,885 INFO L146 ILogger]: Without dead ends: 161 [2019-05-23 11:18:14,886 INFO L146 ILogger]: 0 DeclaredPredicates, 189 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:18:14,886 INFO L146 ILogger]: Start minimizeSevpa. Operand 161 states. [2019-05-23 11:18:14,890 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 161 to 154. [2019-05-23 11:18:14,890 INFO L146 ILogger]: Start removeUnreachable. Operand 154 states. [2019-05-23 11:18:14,890 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2019-05-23 11:18:14,891 INFO L146 ILogger]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 139 [2019-05-23 11:18:14,891 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:14,891 INFO L146 ILogger]: Abstraction has 154 states and 156 transitions. [2019-05-23 11:18:14,891 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:18:14,891 INFO L146 ILogger]: Start isEmpty. Operand 154 states and 156 transitions. [2019-05-23 11:18:14,893 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 150 [2019-05-23 11:18:14,893 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:14,893 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:14,893 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:14,893 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:14,894 INFO L146 ILogger]: Analyzing trace with hash 1997425477, now seen corresponding path program 13 times [2019-05-23 11:18:14,894 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:14,894 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:14,895 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:14,895 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:14,895 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:14,911 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:15,527 INFO L146 ILogger]: Checked inductivity of 806 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2019-05-23 11:18:15,527 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:15,527 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:15,535 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:15,579 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:15,580 INFO L146 ILogger]: Trace formula consists of 227 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:18:15,582 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:15,633 INFO L146 ILogger]: Checked inductivity of 806 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2019-05-23 11:18:15,652 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:15,652 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 16] total 30 [2019-05-23 11:18:15,652 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:18:15,653 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:18:15,653 INFO L146 ILogger]: CoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:18:15,653 INFO L146 ILogger]: Start difference. First operand 154 states and 156 transitions. Second operand 30 states. [2019-05-23 11:18:16,677 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:16,677 INFO L146 ILogger]: Finished difference Result 278 states and 283 transitions. [2019-05-23 11:18:16,677 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:18:16,678 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 149 [2019-05-23 11:18:16,678 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:16,679 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:18:16,679 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:18:16,680 INFO L146 ILogger]: 0 DeclaredPredicates, 203 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=995, Invalid=2085, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:18:16,681 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:18:16,684 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 164. [2019-05-23 11:18:16,684 INFO L146 ILogger]: Start removeUnreachable. Operand 164 states. [2019-05-23 11:18:16,685 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2019-05-23 11:18:16,685 INFO L146 ILogger]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 149 [2019-05-23 11:18:16,685 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:16,685 INFO L146 ILogger]: Abstraction has 164 states and 166 transitions. [2019-05-23 11:18:16,685 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:18:16,685 INFO L146 ILogger]: Start isEmpty. Operand 164 states and 166 transitions. [2019-05-23 11:18:16,686 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 160 [2019-05-23 11:18:16,686 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:16,686 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:16,687 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:16,687 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:16,687 INFO L146 ILogger]: Analyzing trace with hash 705720292, now seen corresponding path program 14 times [2019-05-23 11:18:16,687 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:16,687 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:16,688 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:16,688 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:16,688 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:16,704 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:17,397 INFO L146 ILogger]: Checked inductivity of 938 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2019-05-23 11:18:17,397 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:17,397 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:17,408 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:17,453 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:17,453 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:17,454 INFO L146 ILogger]: Trace formula consists of 241 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:18:17,456 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:17,524 INFO L146 ILogger]: Checked inductivity of 938 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2019-05-23 11:18:17,550 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:17,551 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 17] total 32 [2019-05-23 11:18:17,551 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:18:17,551 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:18:17,552 INFO L146 ILogger]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:18:17,552 INFO L146 ILogger]: Start difference. First operand 164 states and 166 transitions. Second operand 32 states. [2019-05-23 11:18:18,663 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:18,663 INFO L146 ILogger]: Finished difference Result 295 states and 300 transitions. [2019-05-23 11:18:18,664 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:18:18,664 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 159 [2019-05-23 11:18:18,664 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:18,665 INFO L146 ILogger]: With dead ends: 295 [2019-05-23 11:18:18,666 INFO L146 ILogger]: Without dead ends: 181 [2019-05-23 11:18:18,668 INFO L146 ILogger]: 0 DeclaredPredicates, 217 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1141, Invalid=2399, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:18:18,668 INFO L146 ILogger]: Start minimizeSevpa. Operand 181 states. [2019-05-23 11:18:18,670 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 181 to 174. [2019-05-23 11:18:18,671 INFO L146 ILogger]: Start removeUnreachable. Operand 174 states. [2019-05-23 11:18:18,671 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 174 states to 174 states and 176 transitions. [2019-05-23 11:18:18,672 INFO L146 ILogger]: Start accepts. Automaton has 174 states and 176 transitions. Word has length 159 [2019-05-23 11:18:18,672 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:18,672 INFO L146 ILogger]: Abstraction has 174 states and 176 transitions. [2019-05-23 11:18:18,672 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:18:18,672 INFO L146 ILogger]: Start isEmpty. Operand 174 states and 176 transitions. [2019-05-23 11:18:18,673 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 170 [2019-05-23 11:18:18,673 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:18,673 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:18,673 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:18,673 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:18,673 INFO L146 ILogger]: Analyzing trace with hash -1208683483, now seen corresponding path program 15 times [2019-05-23 11:18:18,673 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:18,674 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:18,674 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:18,674 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:18,674 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:18,691 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:19,204 INFO L146 ILogger]: Checked inductivity of 1080 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2019-05-23 11:18:19,204 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:19,204 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:19,224 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:22,267 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-05-23 11:18:22,268 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:22,272 INFO L146 ILogger]: Trace formula consists of 255 conjuncts, 49 conjunts are in the unsatisfiable core [2019-05-23 11:18:22,275 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:22,328 INFO L146 ILogger]: Checked inductivity of 1080 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2019-05-23 11:18:22,349 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:22,349 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 18] total 34 [2019-05-23 11:18:22,350 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:18:22,350 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:18:22,351 INFO L146 ILogger]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:18:22,351 INFO L146 ILogger]: Start difference. First operand 174 states and 176 transitions. Second operand 34 states. [2019-05-23 11:18:23,414 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:23,415 INFO L146 ILogger]: Finished difference Result 312 states and 317 transitions. [2019-05-23 11:18:23,415 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:18:23,415 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 169 [2019-05-23 11:18:23,415 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:23,416 INFO L146 ILogger]: With dead ends: 312 [2019-05-23 11:18:23,416 INFO L146 ILogger]: Without dead ends: 191 [2019-05-23 11:18:23,418 INFO L146 ILogger]: 0 DeclaredPredicates, 231 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1297, Invalid=2735, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:18:23,418 INFO L146 ILogger]: Start minimizeSevpa. Operand 191 states. [2019-05-23 11:18:23,421 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 191 to 184. [2019-05-23 11:18:23,422 INFO L146 ILogger]: Start removeUnreachable. Operand 184 states. [2019-05-23 11:18:23,422 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 184 states to 184 states and 186 transitions. [2019-05-23 11:18:23,422 INFO L146 ILogger]: Start accepts. Automaton has 184 states and 186 transitions. Word has length 169 [2019-05-23 11:18:23,423 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:23,423 INFO L146 ILogger]: Abstraction has 184 states and 186 transitions. [2019-05-23 11:18:23,423 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:18:23,423 INFO L146 ILogger]: Start isEmpty. Operand 184 states and 186 transitions. [2019-05-23 11:18:23,424 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 180 [2019-05-23 11:18:23,424 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:23,424 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:23,425 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:23,425 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:23,425 INFO L146 ILogger]: Analyzing trace with hash 744189572, now seen corresponding path program 16 times [2019-05-23 11:18:23,425 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:23,425 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:23,426 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:23,426 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:23,426 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:23,444 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:23,897 INFO L146 ILogger]: Checked inductivity of 1232 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2019-05-23 11:18:23,898 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:23,898 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:23,910 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:24,063 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:24,063 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:24,065 INFO L146 ILogger]: Trace formula consists of 269 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:18:24,067 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:24,142 INFO L146 ILogger]: Checked inductivity of 1232 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2019-05-23 11:18:24,161 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:24,161 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 19] total 36 [2019-05-23 11:18:24,162 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:18:24,162 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:18:24,163 INFO L146 ILogger]: CoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:18:24,163 INFO L146 ILogger]: Start difference. First operand 184 states and 186 transitions. Second operand 36 states. [2019-05-23 11:18:25,017 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:25,018 INFO L146 ILogger]: Finished difference Result 329 states and 334 transitions. [2019-05-23 11:18:25,018 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:18:25,018 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 179 [2019-05-23 11:18:25,018 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:25,020 INFO L146 ILogger]: With dead ends: 329 [2019-05-23 11:18:25,020 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:18:25,022 INFO L146 ILogger]: 0 DeclaredPredicates, 245 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1463, Invalid=3093, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:18:25,022 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:18:25,025 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 194. [2019-05-23 11:18:25,025 INFO L146 ILogger]: Start removeUnreachable. Operand 194 states. [2019-05-23 11:18:25,026 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions. [2019-05-23 11:18:25,026 INFO L146 ILogger]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 179 [2019-05-23 11:18:25,027 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:25,027 INFO L146 ILogger]: Abstraction has 194 states and 196 transitions. [2019-05-23 11:18:25,027 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:18:25,027 INFO L146 ILogger]: Start isEmpty. Operand 194 states and 196 transitions. [2019-05-23 11:18:25,028 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 190 [2019-05-23 11:18:25,028 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:25,028 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:25,028 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:25,028 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:25,028 INFO L146 ILogger]: Analyzing trace with hash 1205683461, now seen corresponding path program 17 times [2019-05-23 11:18:25,029 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:25,029 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:25,029 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:25,029 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:25,029 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:25,048 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:25,581 INFO L146 ILogger]: Checked inductivity of 1394 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2019-05-23 11:18:25,581 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:25,581 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 11:18:25,590 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:09,197 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:19:09,197 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:09,217 INFO L146 ILogger]: Trace formula consists of 283 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:19:09,219 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:09,290 INFO L146 ILogger]: Checked inductivity of 1394 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2019-05-23 11:19:09,315 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:09,316 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:19:09,316 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:19:09,316 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:19:09,317 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:19:09,317 INFO L146 ILogger]: Start difference. First operand 194 states and 196 transitions. Second operand 39 states.