java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/zero_sum2_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:06,081 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:06,083 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:06,095 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:06,095 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:06,096 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:06,097 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:06,099 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:06,101 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:06,102 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:06,103 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:06,103 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:06,104 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:06,105 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:06,106 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:06,107 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:06,108 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:06,110 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:06,112 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:06,114 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:06,115 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:06,116 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:06,119 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:06,119 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:06,119 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:06,120 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:06,121 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:06,122 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:06,122 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:06,123 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:06,124 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:06,124 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:06,126 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:06,126 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:06,127 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:06,127 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:06,127 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:06,128 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:06,129 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:06,129 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:06,144 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:06,145 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:06,146 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:06,146 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:06,146 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:06,146 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:06,147 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:06,147 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:06,147 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:06,147 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:06,147 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:06,148 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:06,148 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:06,148 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:06,148 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:06,148 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:06,149 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:06,149 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:06,149 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:06,149 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:06,149 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:06,150 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:06,150 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:06,150 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:06,150 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:06,150 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:06,151 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:06,151 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:06,151 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:29:06,182 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:06,193 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:06,197 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:06,198 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:06,199 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:06,200 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum2_true-unreach-call.c [2019-05-23 11:29:06,253 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd2a727b/fc6ccb84960e4432884c176a6011b0e8/FLAGc4c291c6c [2019-05-23 11:29:06,696 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:06,697 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum2_true-unreach-call.c [2019-05-23 11:29:06,703 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd2a727b/fc6ccb84960e4432884c176a6011b0e8/FLAGc4c291c6c [2019-05-23 11:29:07,043 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd2a727b/fc6ccb84960e4432884c176a6011b0e8 [2019-05-23 11:29:07,053 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:07,055 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:07,056 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:07,056 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:07,062 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:07,063 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,066 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d40d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07, skipping insertion in model container [2019-05-23 11:29:07,067 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,074 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:07,096 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:07,282 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:07,287 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:07,311 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:07,334 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:07,334 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07 WrapperNode [2019-05-23 11:29:07,334 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:07,336 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:07,336 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:07,336 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:07,345 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,354 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,382 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:07,382 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:07,382 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:07,383 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:07,392 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,393 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,394 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,395 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,402 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,411 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,420 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (1/1) ... [2019-05-23 11:29:07,422 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:07,426 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:07,426 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:07,427 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:07,428 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:29:07,574 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:07,575 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:07,575 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:07,575 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:07,575 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:08,040 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:08,041 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:29:08,042 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:08 BoogieIcfgContainer [2019-05-23 11:29:08,042 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:08,043 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:08,043 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:08,046 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:08,046 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:07" (1/3) ... [2019-05-23 11:29:08,047 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563d5ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:08, skipping insertion in model container [2019-05-23 11:29:08,047 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:07" (2/3) ... [2019-05-23 11:29:08,048 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563d5ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:08, skipping insertion in model container [2019-05-23 11:29:08,048 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:08" (3/3) ... [2019-05-23 11:29:08,050 INFO L146 ILogger]: Analyzing ICFG zero_sum2_true-unreach-call.c [2019-05-23 11:29:08,059 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:08,067 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:08,083 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:08,113 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:08,113 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:08,113 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:08,113 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:08,114 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:08,114 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:08,114 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:08,114 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:08,114 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:08,130 INFO L146 ILogger]: Start isEmpty. Operand 56 states. [2019-05-23 11:29:08,137 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:29:08,138 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:08,138 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] [2019-05-23 11:29:08,140 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:08,146 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:08,146 INFO L146 ILogger]: Analyzing trace with hash 170593938, now seen corresponding path program 1 times [2019-05-23 11:29:08,148 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:08,148 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:08,186 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:08,186 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:08,187 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:08,229 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:08,269 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:08,272 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:08,272 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:08,276 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:08,287 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:08,288 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:08,290 INFO L146 ILogger]: Start difference. First operand 56 states. Second operand 2 states. [2019-05-23 11:29:08,307 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:08,307 INFO L146 ILogger]: Finished difference Result 92 states and 107 transitions. [2019-05-23 11:29:08,308 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:08,309 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 25 [2019-05-23 11:29:08,309 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:08,319 INFO L146 ILogger]: With dead ends: 92 [2019-05-23 11:29:08,319 INFO L146 ILogger]: Without dead ends: 50 [2019-05-23 11:29:08,323 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:08,341 INFO L146 ILogger]: Start minimizeSevpa. Operand 50 states. [2019-05-23 11:29:08,361 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-05-23 11:29:08,363 INFO L146 ILogger]: Start removeUnreachable. Operand 50 states. [2019-05-23 11:29:08,364 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2019-05-23 11:29:08,367 INFO L146 ILogger]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 25 [2019-05-23 11:29:08,367 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:08,367 INFO L146 ILogger]: Abstraction has 50 states and 53 transitions. [2019-05-23 11:29:08,367 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:08,368 INFO L146 ILogger]: Start isEmpty. Operand 50 states and 53 transitions. [2019-05-23 11:29:08,369 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:29:08,369 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:08,369 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] [2019-05-23 11:29:08,370 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:08,370 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:08,370 INFO L146 ILogger]: Analyzing trace with hash -1393632578, now seen corresponding path program 1 times [2019-05-23 11:29:08,370 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:08,371 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:08,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:08,372 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:08,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:08,393 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:08,682 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:08,683 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:08,683 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:08,686 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:08,687 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:08,687 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:08,687 INFO L146 ILogger]: Start difference. First operand 50 states and 53 transitions. Second operand 5 states. [2019-05-23 11:29:08,930 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:08,930 INFO L146 ILogger]: Finished difference Result 71 states and 77 transitions. [2019-05-23 11:29:08,930 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:08,931 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 25 [2019-05-23 11:29:08,931 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:08,932 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:29:08,933 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:29:08,934 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:08,934 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:29:08,942 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 57. [2019-05-23 11:29:08,942 INFO L146 ILogger]: Start removeUnreachable. Operand 57 states. [2019-05-23 11:29:08,944 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2019-05-23 11:29:08,944 INFO L146 ILogger]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 25 [2019-05-23 11:29:08,944 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:08,944 INFO L146 ILogger]: Abstraction has 57 states and 63 transitions. [2019-05-23 11:29:08,945 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:08,945 INFO L146 ILogger]: Start isEmpty. Operand 57 states and 63 transitions. [2019-05-23 11:29:08,946 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:29:08,946 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:08,947 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:08,947 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:08,947 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:08,947 INFO L146 ILogger]: Analyzing trace with hash -537510346, now seen corresponding path program 1 times [2019-05-23 11:29:08,948 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:08,948 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:08,949 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:08,949 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:08,949 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:08,964 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:09,225 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:09,225 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:09,225 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:09,245 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:09,269 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:09,271 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:09,277 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:09,326 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:29:09,351 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:09,351 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:09,352 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:09,352 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:09,353 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:09,353 INFO L146 ILogger]: Start difference. First operand 57 states and 63 transitions. Second operand 7 states. [2019-05-23 11:29:09,810 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:09,811 INFO L146 ILogger]: Finished difference Result 111 states and 123 transitions. [2019-05-23 11:29:09,815 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:09,816 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 32 [2019-05-23 11:29:09,816 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:09,817 INFO L146 ILogger]: With dead ends: 111 [2019-05-23 11:29:09,817 INFO L146 ILogger]: Without dead ends: 76 [2019-05-23 11:29:09,818 INFO L146 ILogger]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:09,821 INFO L146 ILogger]: Start minimizeSevpa. Operand 76 states. [2019-05-23 11:29:09,830 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 76 to 61. [2019-05-23 11:29:09,830 INFO L146 ILogger]: Start removeUnreachable. Operand 61 states. [2019-05-23 11:29:09,834 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2019-05-23 11:29:09,834 INFO L146 ILogger]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 32 [2019-05-23 11:29:09,835 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:09,835 INFO L146 ILogger]: Abstraction has 61 states and 64 transitions. [2019-05-23 11:29:09,836 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:09,836 INFO L146 ILogger]: Start isEmpty. Operand 61 states and 64 transitions. [2019-05-23 11:29:09,837 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 61 [2019-05-23 11:29:09,837 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:09,838 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:09,839 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:09,839 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:09,840 INFO L146 ILogger]: Analyzing trace with hash 46015940, now seen corresponding path program 1 times [2019-05-23 11:29:09,840 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:09,840 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:09,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:09,841 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:09,842 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:09,872 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:09,995 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:29:09,995 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:09,995 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:10,013 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:10,049 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:10,050 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:10,053 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:10,396 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:29:10,427 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:10,428 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:10,428 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:10,429 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:10,429 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:10,429 INFO L146 ILogger]: Start difference. First operand 61 states and 64 transitions. Second operand 9 states. [2019-05-23 11:29:10,744 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:10,745 INFO L146 ILogger]: Finished difference Result 123 states and 129 transitions. [2019-05-23 11:29:10,745 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:10,745 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 60 [2019-05-23 11:29:10,746 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:10,747 INFO L146 ILogger]: With dead ends: 123 [2019-05-23 11:29:10,747 INFO L146 ILogger]: Without dead ends: 83 [2019-05-23 11:29:10,749 INFO L146 ILogger]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:10,750 INFO L146 ILogger]: Start minimizeSevpa. Operand 83 states. [2019-05-23 11:29:10,756 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 83 to 68. [2019-05-23 11:29:10,756 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:29:10,757 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2019-05-23 11:29:10,757 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 60 [2019-05-23 11:29:10,759 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:10,759 INFO L146 ILogger]: Abstraction has 68 states and 71 transitions. [2019-05-23 11:29:10,759 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:10,759 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 71 transitions. [2019-05-23 11:29:10,761 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:29:10,761 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:10,761 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:10,762 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:10,762 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:10,762 INFO L146 ILogger]: Analyzing trace with hash -1884590761, now seen corresponding path program 2 times [2019-05-23 11:29:10,762 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:10,762 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:10,763 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:10,763 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:10,764 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:10,781 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:10,891 INFO L146 ILogger]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-05-23 11:29:10,892 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:10,892 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:10,903 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:10,945 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:10,945 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:10,947 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:10,950 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:11,051 INFO L146 ILogger]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-05-23 11:29:11,073 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:11,074 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:11,074 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:11,074 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:11,075 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:11,075 INFO L146 ILogger]: Start difference. First operand 68 states and 71 transitions. Second operand 9 states. [2019-05-23 11:29:11,780 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:11,780 INFO L146 ILogger]: Finished difference Result 116 states and 121 transitions. [2019-05-23 11:29:11,781 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:11,781 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 67 [2019-05-23 11:29:11,781 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:11,782 INFO L146 ILogger]: With dead ends: 116 [2019-05-23 11:29:11,782 INFO L146 ILogger]: Without dead ends: 85 [2019-05-23 11:29:11,784 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:11,785 INFO L146 ILogger]: Start minimizeSevpa. Operand 85 states. [2019-05-23 11:29:11,800 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 85 to 75. [2019-05-23 11:29:11,800 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:29:11,801 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2019-05-23 11:29:11,801 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 67 [2019-05-23 11:29:11,801 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:11,801 INFO L146 ILogger]: Abstraction has 75 states and 78 transitions. [2019-05-23 11:29:11,802 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:11,803 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 78 transitions. [2019-05-23 11:29:11,804 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:29:11,804 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:11,805 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:11,805 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:11,805 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:11,805 INFO L146 ILogger]: Analyzing trace with hash -902288035, now seen corresponding path program 3 times [2019-05-23 11:29:11,805 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:11,806 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:11,806 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:11,806 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:11,808 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:11,845 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:12,010 INFO L146 ILogger]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:29:12,010 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:12,010 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:12,019 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:12,058 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:29:12,059 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:12,059 INFO L146 ILogger]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:12,062 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:12,152 INFO L146 ILogger]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:29:12,172 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:12,173 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:12,173 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:12,173 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:12,174 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:12,174 INFO L146 ILogger]: Start difference. First operand 75 states and 78 transitions. Second operand 9 states. [2019-05-23 11:29:12,378 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:12,378 INFO L146 ILogger]: Finished difference Result 109 states and 113 transitions. [2019-05-23 11:29:12,378 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:12,379 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 74 [2019-05-23 11:29:12,379 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:12,381 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:29:12,381 INFO L146 ILogger]: Without dead ends: 87 [2019-05-23 11:29:12,382 INFO L146 ILogger]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:12,382 INFO L146 ILogger]: Start minimizeSevpa. Operand 87 states. [2019-05-23 11:29:12,387 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 87 to 82. [2019-05-23 11:29:12,388 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:29:12,388 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2019-05-23 11:29:12,388 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 74 [2019-05-23 11:29:12,389 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:12,389 INFO L146 ILogger]: Abstraction has 82 states and 85 transitions. [2019-05-23 11:29:12,389 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:12,389 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 85 transitions. [2019-05-23 11:29:12,390 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:29:12,390 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:12,391 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:12,391 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:12,391 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:12,391 INFO L146 ILogger]: Analyzing trace with hash -1292735618, now seen corresponding path program 4 times [2019-05-23 11:29:12,391 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:12,392 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:12,392 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:12,393 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:12,393 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:12,447 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:13,303 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2019-05-23 11:29:13,609 WARN L146 ILogger]: Spent 219.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2019-05-23 11:29:13,912 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2019-05-23 11:29:16,012 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:16,012 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:16,013 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:16,021 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:16,046 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:16,046 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:16,047 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 66 conjunts are in the unsatisfiable core [2019-05-23 11:29:16,051 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:17,192 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:17,193 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:17,198 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:17,199 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:17,199 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:17,542 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:17,561 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:17,561 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 26] total 51 [2019-05-23 11:29:17,562 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:29:17,562 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:29:17,566 INFO L146 ILogger]: CoverageRelationStatistics Valid=202, Invalid=2348, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:29:17,566 INFO L146 ILogger]: Start difference. First operand 82 states and 85 transitions. Second operand 51 states. [2019-05-23 11:29:22,376 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:22,376 INFO L146 ILogger]: Finished difference Result 151 states and 157 transitions. [2019-05-23 11:29:22,377 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:29:22,377 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 81 [2019-05-23 11:29:22,378 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:22,379 INFO L146 ILogger]: With dead ends: 151 [2019-05-23 11:29:22,379 INFO L146 ILogger]: Without dead ends: 145 [2019-05-23 11:29:22,382 INFO L146 ILogger]: 0 DeclaredPredicates, 151 GetRequests, 60 SyntacticMatches, 12 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=508, Invalid=5972, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:29:22,383 INFO L146 ILogger]: Start minimizeSevpa. Operand 145 states. [2019-05-23 11:29:22,391 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 145 to 129. [2019-05-23 11:29:22,391 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:29:22,392 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2019-05-23 11:29:22,393 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 81 [2019-05-23 11:29:22,393 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:22,393 INFO L146 ILogger]: Abstraction has 129 states and 135 transitions. [2019-05-23 11:29:22,393 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:29:22,393 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 135 transitions. [2019-05-23 11:29:22,395 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:29:22,395 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:22,395 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:22,395 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:22,395 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:22,396 INFO L146 ILogger]: Analyzing trace with hash 850548086, now seen corresponding path program 5 times [2019-05-23 11:29:22,396 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:22,396 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:22,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:22,397 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:22,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:22,410 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:22,546 INFO L146 ILogger]: Checked inductivity of 51 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:22,547 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:22,547 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:22,558 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:22,581 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:29:22,582 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:22,583 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:22,587 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:22,759 INFO L146 ILogger]: Checked inductivity of 51 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:22,779 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:22,779 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:29:22,780 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:29:22,780 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:29:22,780 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:29:22,780 INFO L146 ILogger]: Start difference. First operand 129 states and 135 transitions. Second operand 21 states. [2019-05-23 11:29:23,491 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:23,492 INFO L146 ILogger]: Finished difference Result 217 states and 226 transitions. [2019-05-23 11:29:23,492 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:29:23,492 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 88 [2019-05-23 11:29:23,493 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:23,494 INFO L146 ILogger]: With dead ends: 217 [2019-05-23 11:29:23,495 INFO L146 ILogger]: Without dead ends: 188 [2019-05-23 11:29:23,496 INFO L146 ILogger]: 0 DeclaredPredicates, 124 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:29:23,496 INFO L146 ILogger]: Start minimizeSevpa. Operand 188 states. [2019-05-23 11:29:23,507 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 188 to 159. [2019-05-23 11:29:23,508 INFO L146 ILogger]: Start removeUnreachable. Operand 159 states. [2019-05-23 11:29:23,508 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 159 states to 159 states and 167 transitions. [2019-05-23 11:29:23,509 INFO L146 ILogger]: Start accepts. Automaton has 159 states and 167 transitions. Word has length 88 [2019-05-23 11:29:23,509 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:23,509 INFO L146 ILogger]: Abstraction has 159 states and 167 transitions. [2019-05-23 11:29:23,509 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:29:23,509 INFO L146 ILogger]: Start isEmpty. Operand 159 states and 167 transitions. [2019-05-23 11:29:23,511 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:29:23,511 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:23,511 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:23,511 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:23,511 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:23,512 INFO L146 ILogger]: Analyzing trace with hash 1373451837, now seen corresponding path program 6 times [2019-05-23 11:29:23,512 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:23,512 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:23,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:23,513 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:23,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:23,524 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:23,663 INFO L146 ILogger]: Checked inductivity of 51 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:23,663 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:23,663 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:23,673 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:23,713 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:29:23,713 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:23,714 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:23,718 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:23,890 INFO L146 ILogger]: Checked inductivity of 51 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:23,920 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:23,921 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:29:23,921 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:29:23,922 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:29:23,922 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:29:23,922 INFO L146 ILogger]: Start difference. First operand 159 states and 167 transitions. Second operand 24 states. [2019-05-23 11:29:24,981 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:24,982 INFO L146 ILogger]: Finished difference Result 241 states and 248 transitions. [2019-05-23 11:29:24,982 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:29:24,982 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 88 [2019-05-23 11:29:24,982 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:24,983 INFO L146 ILogger]: With dead ends: 241 [2019-05-23 11:29:24,983 INFO L146 ILogger]: Without dead ends: 196 [2019-05-23 11:29:24,985 INFO L146 ILogger]: 0 DeclaredPredicates, 129 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:29:24,986 INFO L146 ILogger]: Start minimizeSevpa. Operand 196 states. [2019-05-23 11:29:24,993 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 196 to 158. [2019-05-23 11:29:24,994 INFO L146 ILogger]: Start removeUnreachable. Operand 158 states. [2019-05-23 11:29:24,994 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 158 states to 158 states and 164 transitions. [2019-05-23 11:29:24,994 INFO L146 ILogger]: Start accepts. Automaton has 158 states and 164 transitions. Word has length 88 [2019-05-23 11:29:24,995 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:24,995 INFO L146 ILogger]: Abstraction has 158 states and 164 transitions. [2019-05-23 11:29:24,995 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:29:24,995 INFO L146 ILogger]: Start isEmpty. Operand 158 states and 164 transitions. [2019-05-23 11:29:24,996 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:29:24,996 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:24,997 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:24,997 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:24,997 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:24,997 INFO L146 ILogger]: Analyzing trace with hash 861120772, now seen corresponding path program 7 times [2019-05-23 11:29:24,998 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:24,998 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:24,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:24,999 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:24,999 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:25,008 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:25,237 INFO L146 ILogger]: Checked inductivity of 51 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:25,237 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:25,237 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:29:25,249 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:25,273 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:25,274 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:25,276 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:25,420 INFO L146 ILogger]: Checked inductivity of 51 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:25,439 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:25,440 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:25,440 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:25,440 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:25,441 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:25,441 INFO L146 ILogger]: Start difference. First operand 158 states and 164 transitions. Second operand 20 states. [2019-05-23 11:29:25,831 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:25,831 INFO L146 ILogger]: Finished difference Result 185 states and 190 transitions. [2019-05-23 11:29:25,831 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:29:25,832 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 88 [2019-05-23 11:29:25,832 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:25,833 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:29:25,833 INFO L146 ILogger]: Without dead ends: 124 [2019-05-23 11:29:25,834 INFO L146 ILogger]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:29:25,834 INFO L146 ILogger]: Start minimizeSevpa. Operand 124 states. [2019-05-23 11:29:25,839 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 124 to 119. [2019-05-23 11:29:25,839 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:29:25,839 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2019-05-23 11:29:25,840 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 88 [2019-05-23 11:29:25,840 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:25,840 INFO L146 ILogger]: Abstraction has 119 states and 123 transitions. [2019-05-23 11:29:25,840 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:25,840 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 123 transitions. [2019-05-23 11:29:25,841 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:29:25,841 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:25,841 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:25,842 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:25,842 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:25,842 INFO L146 ILogger]: Analyzing trace with hash -1045320245, now seen corresponding path program 8 times [2019-05-23 11:29:25,842 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:25,842 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:25,843 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:25,843 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:25,843 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:25,853 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:26,594 INFO L146 ILogger]: Checked inductivity of 51 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:26,595 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:26,595 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 11:29:26,607 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:26,631 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:26,631 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:26,632 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:26,633 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:26,794 INFO L146 ILogger]: Checked inductivity of 51 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:29:26,812 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:26,813 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:26,813 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:26,813 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:26,814 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:26,814 INFO L146 ILogger]: Start difference. First operand 119 states and 123 transitions. Second operand 20 states. [2019-05-23 11:29:27,302 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:27,302 INFO L146 ILogger]: Finished difference Result 199 states and 206 transitions. [2019-05-23 11:29:27,302 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:29:27,303 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 88 [2019-05-23 11:29:27,303 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:27,304 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:29:27,304 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:29:27,305 INFO L146 ILogger]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:29:27,306 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:29:27,310 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 126. [2019-05-23 11:29:27,310 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:29:27,311 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2019-05-23 11:29:27,311 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 88 [2019-05-23 11:29:27,311 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:27,311 INFO L146 ILogger]: Abstraction has 126 states and 130 transitions. [2019-05-23 11:29:27,311 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:27,311 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 130 transitions. [2019-05-23 11:29:27,312 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 96 [2019-05-23 11:29:27,313 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:27,313 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:27,313 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:27,313 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:27,313 INFO L146 ILogger]: Analyzing trace with hash 738240023, now seen corresponding path program 9 times [2019-05-23 11:29:27,314 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:27,314 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:27,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:27,315 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:27,315 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:27,324 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:27,521 INFO L146 ILogger]: Checked inductivity of 66 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:29:27,522 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:27,522 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 11:29:27,532 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:27,559 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:29:27,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:27,560 INFO L146 ILogger]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:27,562 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:27,686 INFO L146 ILogger]: Checked inductivity of 66 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:29:27,705 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:27,705 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:29:27,705 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:29:27,706 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:29:27,706 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:29:27,706 INFO L146 ILogger]: Start difference. First operand 126 states and 130 transitions. Second operand 21 states. [2019-05-23 11:29:28,709 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:28,709 INFO L146 ILogger]: Finished difference Result 137 states and 140 transitions. [2019-05-23 11:29:28,709 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:29:28,710 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 95 [2019-05-23 11:29:28,710 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:28,711 INFO L146 ILogger]: With dead ends: 137 [2019-05-23 11:29:28,711 INFO L146 ILogger]: Without dead ends: 115 [2019-05-23 11:29:28,712 INFO L146 ILogger]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=352, Invalid=1904, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:29:28,713 INFO L146 ILogger]: Start minimizeSevpa. Operand 115 states. [2019-05-23 11:29:28,716 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 115 to 110. [2019-05-23 11:29:28,716 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:29:28,716 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 113 transitions. [2019-05-23 11:29:28,717 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 113 transitions. Word has length 95 [2019-05-23 11:29:28,717 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:28,717 INFO L146 ILogger]: Abstraction has 110 states and 113 transitions. [2019-05-23 11:29:28,717 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:29:28,717 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 113 transitions. [2019-05-23 11:29:28,718 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:29:28,718 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:28,718 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:28,719 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:28,719 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:28,719 INFO L146 ILogger]: Analyzing trace with hash -105643856, now seen corresponding path program 10 times [2019-05-23 11:29:28,719 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:28,719 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:28,720 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:28,720 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:28,720 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:28,739 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:29,898 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2019-05-23 11:29:31,327 INFO L146 ILogger]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:31,328 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:31,328 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 11:29:31,348 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:31,387 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:31,387 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:31,390 WARN L146 ILogger]: Trace formula consists of 178 conjuncts, 98 conjunts are in the unsatisfiable core [2019-05-23 11:29:31,393 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:32,371 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:32,372 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:32,375 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:32,375 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:32,375 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:32,527 INFO L146 ILogger]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:32,545 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:32,545 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 38] total 57 [2019-05-23 11:29:32,546 INFO L146 ILogger]: Interpolant automaton has 57 states [2019-05-23 11:29:32,546 INFO L146 ILogger]: Constructing interpolant automaton starting with 57 interpolants. [2019-05-23 11:29:32,547 INFO L146 ILogger]: CoverageRelationStatistics Valid=207, Invalid=2985, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:29:32,547 INFO L146 ILogger]: Start difference. First operand 110 states and 113 transitions. Second operand 57 states. [2019-05-23 11:29:34,351 WARN L146 ILogger]: Spent 132.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2019-05-23 11:29:36,938 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:36,939 INFO L146 ILogger]: Finished difference Result 200 states and 206 transitions. [2019-05-23 11:29:36,939 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-05-23 11:29:36,939 INFO L146 ILogger]: Start accepts. Automaton has 57 states. Word has length 109 [2019-05-23 11:29:36,940 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:36,941 INFO L146 ILogger]: With dead ends: 200 [2019-05-23 11:29:36,942 INFO L146 ILogger]: Without dead ends: 194 [2019-05-23 11:29:36,944 INFO L146 ILogger]: 0 DeclaredPredicates, 180 GetRequests, 80 SyntacticMatches, 25 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=337, Invalid=5515, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:29:36,945 INFO L146 ILogger]: Start minimizeSevpa. Operand 194 states. [2019-05-23 11:29:36,949 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 194 to 171. [2019-05-23 11:29:36,949 INFO L146 ILogger]: Start removeUnreachable. Operand 171 states. [2019-05-23 11:29:36,950 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 171 states to 171 states and 177 transitions. [2019-05-23 11:29:36,950 INFO L146 ILogger]: Start accepts. Automaton has 171 states and 177 transitions. Word has length 109 [2019-05-23 11:29:36,950 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:36,950 INFO L146 ILogger]: Abstraction has 171 states and 177 transitions. [2019-05-23 11:29:36,950 INFO L146 ILogger]: Interpolant automaton has 57 states. [2019-05-23 11:29:36,950 INFO L146 ILogger]: Start isEmpty. Operand 171 states and 177 transitions. [2019-05-23 11:29:36,951 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:29:36,951 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,952 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:36,952 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,952 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,952 INFO L146 ILogger]: Analyzing trace with hash 1508500484, now seen corresponding path program 11 times [2019-05-23 11:29:36,952 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,952 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,953 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,953 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:36,953 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,963 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,269 INFO L146 ILogger]: Checked inductivity of 118 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:29:37,269 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:37,269 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 11:29:37,277 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:37,320 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:29:37,320 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,321 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:29:37,324 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:37,497 INFO L146 ILogger]: Checked inductivity of 118 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:29:37,517 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:37,517 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:29:37,518 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:29:37,518 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:29:37,519 INFO L146 ILogger]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:29:37,519 INFO L146 ILogger]: Start difference. First operand 171 states and 177 transitions. Second operand 28 states. [2019-05-23 11:29:38,662 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:38,662 INFO L146 ILogger]: Finished difference Result 275 states and 284 transitions. [2019-05-23 11:29:38,663 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:29:38,663 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 116 [2019-05-23 11:29:38,663 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:38,664 INFO L146 ILogger]: With dead ends: 275 [2019-05-23 11:29:38,664 INFO L146 ILogger]: Without dead ends: 239 [2019-05-23 11:29:38,666 INFO L146 ILogger]: 0 DeclaredPredicates, 163 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=460, Invalid=2846, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:29:38,666 INFO L146 ILogger]: Start minimizeSevpa. Operand 239 states. [2019-05-23 11:29:38,672 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 239 to 208. [2019-05-23 11:29:38,672 INFO L146 ILogger]: Start removeUnreachable. Operand 208 states. [2019-05-23 11:29:38,673 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 208 states to 208 states and 216 transitions. [2019-05-23 11:29:38,673 INFO L146 ILogger]: Start accepts. Automaton has 208 states and 216 transitions. Word has length 116 [2019-05-23 11:29:38,673 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:38,674 INFO L146 ILogger]: Abstraction has 208 states and 216 transitions. [2019-05-23 11:29:38,674 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:29:38,674 INFO L146 ILogger]: Start isEmpty. Operand 208 states and 216 transitions. [2019-05-23 11:29:38,675 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:29:38,675 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:38,675 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:38,675 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:38,675 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:38,675 INFO L146 ILogger]: Analyzing trace with hash 2127357277, now seen corresponding path program 12 times [2019-05-23 11:29:38,675 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:38,675 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:38,676 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,676 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:38,676 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,685 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:38,888 INFO L146 ILogger]: Checked inductivity of 118 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:29:38,889 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:38,889 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 11:29:38,897 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:38,928 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:29:38,928 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:38,930 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:29:38,932 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:39,145 INFO L146 ILogger]: Checked inductivity of 118 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:29:39,164 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:39,164 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:29:39,165 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:29:39,165 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:29:39,166 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:29:39,166 INFO L146 ILogger]: Start difference. First operand 208 states and 216 transitions. Second operand 26 states. [2019-05-23 11:29:39,671 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:39,671 INFO L146 ILogger]: Finished difference Result 353 states and 364 transitions. [2019-05-23 11:29:39,671 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:29:39,672 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 116 [2019-05-23 11:29:39,672 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:39,674 INFO L146 ILogger]: With dead ends: 353 [2019-05-23 11:29:39,674 INFO L146 ILogger]: Without dead ends: 264 [2019-05-23 11:29:39,675 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=288, Invalid=1518, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:29:39,676 INFO L146 ILogger]: Start minimizeSevpa. Operand 264 states. [2019-05-23 11:29:39,682 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 264 to 230. [2019-05-23 11:29:39,682 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:29:39,683 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 238 transitions. [2019-05-23 11:29:39,683 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 238 transitions. Word has length 116 [2019-05-23 11:29:39,684 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:39,684 INFO L146 ILogger]: Abstraction has 230 states and 238 transitions. [2019-05-23 11:29:39,684 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:29:39,684 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 238 transitions. [2019-05-23 11:29:39,685 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:29:39,685 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:39,685 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:39,685 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:39,685 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:39,686 INFO L146 ILogger]: Analyzing trace with hash 681799652, now seen corresponding path program 13 times [2019-05-23 11:29:39,686 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:39,686 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:39,687 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:39,687 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:39,687 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:39,696 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,876 INFO L146 ILogger]: Checked inductivity of 118 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:29:39,877 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:39,877 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 11:29:39,885 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:39,917 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,918 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:29:39,919 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:40,069 INFO L146 ILogger]: Checked inductivity of 118 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:29:40,087 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:40,087 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:29:40,088 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:29:40,088 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:29:40,088 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:29:40,088 INFO L146 ILogger]: Start difference. First operand 230 states and 238 transitions. Second operand 26 states. [2019-05-23 11:29:41,155 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:41,155 INFO L146 ILogger]: Finished difference Result 264 states and 271 transitions. [2019-05-23 11:29:41,155 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:29:41,156 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 116 [2019-05-23 11:29:41,156 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:41,157 INFO L146 ILogger]: With dead ends: 264 [2019-05-23 11:29:41,157 INFO L146 ILogger]: Without dead ends: 182 [2019-05-23 11:29:41,159 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=267, Invalid=1373, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:29:41,159 INFO L146 ILogger]: Start minimizeSevpa. Operand 182 states. [2019-05-23 11:29:41,163 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 182 to 177. [2019-05-23 11:29:41,163 INFO L146 ILogger]: Start removeUnreachable. Operand 177 states. [2019-05-23 11:29:41,163 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 177 states to 177 states and 183 transitions. [2019-05-23 11:29:41,163 INFO L146 ILogger]: Start accepts. Automaton has 177 states and 183 transitions. Word has length 116 [2019-05-23 11:29:41,164 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:41,164 INFO L146 ILogger]: Abstraction has 177 states and 183 transitions. [2019-05-23 11:29:41,164 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:29:41,164 INFO L146 ILogger]: Start isEmpty. Operand 177 states and 183 transitions. [2019-05-23 11:29:41,164 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:29:41,165 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:41,165 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:41,165 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:41,165 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:41,165 INFO L146 ILogger]: Analyzing trace with hash -1981547139, now seen corresponding path program 14 times [2019-05-23 11:29:41,166 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:41,166 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:41,166 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:41,166 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:41,167 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:41,175 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:41,682 INFO L146 ILogger]: Checked inductivity of 118 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:29:41,682 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:41,682 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 11:29:41,691 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:41,723 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:41,723 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:41,724 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:29:41,726 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:41,875 INFO L146 ILogger]: Checked inductivity of 118 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:29:41,894 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:41,895 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:29:41,895 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:29:41,895 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:29:41,896 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:29:41,896 INFO L146 ILogger]: Start difference. First operand 177 states and 183 transitions. Second operand 26 states. [2019-05-23 11:29:42,478 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:42,478 INFO L146 ILogger]: Finished difference Result 211 states and 216 transitions. [2019-05-23 11:29:42,478 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:29:42,479 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 116 [2019-05-23 11:29:42,479 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:42,480 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:29:42,481 INFO L146 ILogger]: Without dead ends: 159 [2019-05-23 11:29:42,482 INFO L146 ILogger]: 0 DeclaredPredicates, 153 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:29:42,482 INFO L146 ILogger]: Start minimizeSevpa. Operand 159 states. [2019-05-23 11:29:42,487 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 159 to 154. [2019-05-23 11:29:42,487 INFO L146 ILogger]: Start removeUnreachable. Operand 154 states. [2019-05-23 11:29:42,488 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2019-05-23 11:29:42,488 INFO L146 ILogger]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 116 [2019-05-23 11:29:42,488 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:42,488 INFO L146 ILogger]: Abstraction has 154 states and 158 transitions. [2019-05-23 11:29:42,488 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:29:42,488 INFO L146 ILogger]: Start isEmpty. Operand 154 states and 158 transitions. [2019-05-23 11:29:42,489 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:29:42,489 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:42,489 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:42,489 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:42,489 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:42,489 INFO L146 ILogger]: Analyzing trace with hash -1391402377, now seen corresponding path program 15 times [2019-05-23 11:29:42,490 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:42,490 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:42,490 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:42,490 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:42,491 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:42,500 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:42,677 INFO L146 ILogger]: Checked inductivity of 140 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:29:42,677 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:42,678 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:29:42,686 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:42,728 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:29:42,728 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:42,729 INFO L146 ILogger]: Trace formula consists of 202 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:29:42,732 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:42,927 INFO L146 ILogger]: Checked inductivity of 140 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:29:42,957 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:42,958 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:29:42,958 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:29:42,958 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:29:42,959 INFO L146 ILogger]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:29:42,959 INFO L146 ILogger]: Start difference. First operand 154 states and 158 transitions. Second operand 28 states. [2019-05-23 11:29:44,138 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:44,138 INFO L146 ILogger]: Finished difference Result 165 states and 168 transitions. [2019-05-23 11:29:44,138 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:29:44,139 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 123 [2019-05-23 11:29:44,139 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:44,140 INFO L146 ILogger]: With dead ends: 165 [2019-05-23 11:29:44,140 INFO L146 ILogger]: Without dead ends: 136 [2019-05-23 11:29:44,143 INFO L146 ILogger]: 0 DeclaredPredicates, 173 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=512, Invalid=3028, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:29:44,143 INFO L146 ILogger]: Start minimizeSevpa. Operand 136 states. [2019-05-23 11:29:44,146 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 136 to 131. [2019-05-23 11:29:44,146 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:29:44,147 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2019-05-23 11:29:44,147 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 123 [2019-05-23 11:29:44,147 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:44,148 INFO L146 ILogger]: Abstraction has 131 states and 134 transitions. [2019-05-23 11:29:44,148 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:29:44,148 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 134 transitions. [2019-05-23 11:29:44,148 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:29:44,149 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:44,149 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:44,149 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:44,149 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:44,149 INFO L146 ILogger]: Analyzing trace with hash 879412662, now seen corresponding path program 16 times [2019-05-23 11:29:44,149 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:44,150 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:44,150 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:44,150 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:44,150 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:44,159 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:44,346 INFO L146 ILogger]: Checked inductivity of 162 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:29:44,346 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:44,346 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 11:29:44,355 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:44,383 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:44,383 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:44,384 INFO L146 ILogger]: Trace formula consists of 211 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:29:44,386 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:44,558 INFO L146 ILogger]: Checked inductivity of 162 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:29:44,588 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:44,589 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:29:44,589 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:29:44,589 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:29:44,590 INFO L146 ILogger]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:29:44,590 INFO L146 ILogger]: Start difference. First operand 131 states and 134 transitions. Second operand 28 states. [2019-05-23 11:29:45,981 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:29:46,186 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:46,186 INFO L146 ILogger]: Finished difference Result 149 states and 152 transitions. [2019-05-23 11:29:46,187 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:29:46,187 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 130 [2019-05-23 11:29:46,188 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:46,189 INFO L146 ILogger]: With dead ends: 149 [2019-05-23 11:29:46,189 INFO L146 ILogger]: Without dead ends: 143 [2019-05-23 11:29:46,190 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=489, Invalid=2817, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:29:46,191 INFO L146 ILogger]: Start minimizeSevpa. Operand 143 states. [2019-05-23 11:29:46,194 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 143 to 138. [2019-05-23 11:29:46,194 INFO L146 ILogger]: Start removeUnreachable. Operand 138 states. [2019-05-23 11:29:46,195 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2019-05-23 11:29:46,195 INFO L146 ILogger]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 130 [2019-05-23 11:29:46,195 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:46,195 INFO L146 ILogger]: Abstraction has 138 states and 141 transitions. [2019-05-23 11:29:46,195 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:29:46,195 INFO L146 ILogger]: Start isEmpty. Operand 138 states and 141 transitions. [2019-05-23 11:29:46,197 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:29:46,197 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:46,197 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:46,198 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:46,198 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:46,198 INFO L146 ILogger]: Analyzing trace with hash 2101513278, now seen corresponding path program 17 times [2019-05-23 11:29:46,198 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:46,198 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:46,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:46,199 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:46,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:46,237 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:48,148 WARN L146 ILogger]: Spent 149.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2019-05-23 11:29:51,260 INFO L146 ILogger]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:51,261 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:51,261 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:51,271 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:51,312 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:29:51,313 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,315 WARN L146 ILogger]: Trace formula consists of 224 conjuncts, 130 conjunts are in the unsatisfiable core [2019-05-23 11:29:51,317 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:53,068 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:53,069 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:53,072 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:53,072 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:53,072 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:53,255 INFO L146 ILogger]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:53,273 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:53,273 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 50] total 77 [2019-05-23 11:29:53,274 INFO L146 ILogger]: Interpolant automaton has 77 states [2019-05-23 11:29:53,274 INFO L146 ILogger]: Constructing interpolant automaton starting with 77 interpolants. [2019-05-23 11:29:53,275 INFO L146 ILogger]: CoverageRelationStatistics Valid=283, Invalid=5569, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:29:53,275 INFO L146 ILogger]: Start difference. First operand 138 states and 141 transitions. Second operand 77 states. [2019-05-23 11:29:59,867 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:59,867 INFO L146 ILogger]: Finished difference Result 249 states and 255 transitions. [2019-05-23 11:29:59,867 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:29:59,868 INFO L146 ILogger]: Start accepts. Automaton has 77 states. Word has length 137 [2019-05-23 11:29:59,868 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:59,869 INFO L146 ILogger]: With dead ends: 249 [2019-05-23 11:29:59,869 INFO L146 ILogger]: Without dead ends: 243 [2019-05-23 11:29:59,873 INFO L146 ILogger]: 0 DeclaredPredicates, 232 GetRequests, 99 SyntacticMatches, 30 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2843 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=465, Invalid=10455, Unknown=0, NotChecked=0, Total=10920 [2019-05-23 11:29:59,874 INFO L146 ILogger]: Start minimizeSevpa. Operand 243 states. [2019-05-23 11:29:59,879 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 243 to 213. [2019-05-23 11:29:59,879 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:29:59,880 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 219 transitions. [2019-05-23 11:29:59,880 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 219 transitions. Word has length 137 [2019-05-23 11:29:59,880 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:59,880 INFO L146 ILogger]: Abstraction has 213 states and 219 transitions. [2019-05-23 11:29:59,880 INFO L146 ILogger]: Interpolant automaton has 77 states. [2019-05-23 11:29:59,880 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 219 transitions. [2019-05-23 11:29:59,881 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:29:59,881 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:59,881 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:59,882 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:59,882 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:59,882 INFO L146 ILogger]: Analyzing trace with hash 1021303990, now seen corresponding path program 18 times [2019-05-23 11:29:59,882 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:59,882 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:59,883 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:59,883 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:59,883 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:59,896 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:00,150 INFO L146 ILogger]: Checked inductivity of 213 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:30:00,151 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:00,151 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:00,159 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:00,195 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-05-23 11:30:00,195 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:00,197 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:30:00,199 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:00,458 INFO L146 ILogger]: Checked inductivity of 213 backedges. 75 proven. 46 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:30:00,477 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:00,478 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 35 [2019-05-23 11:30:00,478 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:30:00,478 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:30:00,478 INFO L146 ILogger]: CoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:30:00,479 INFO L146 ILogger]: Start difference. First operand 213 states and 219 transitions. Second operand 35 states. [2019-05-23 11:30:01,453 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:01,453 INFO L146 ILogger]: Finished difference Result 338 states and 347 transitions. [2019-05-23 11:30:01,454 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-05-23 11:30:01,454 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 144 [2019-05-23 11:30:01,454 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:01,456 INFO L146 ILogger]: With dead ends: 338 [2019-05-23 11:30:01,456 INFO L146 ILogger]: Without dead ends: 295 [2019-05-23 11:30:01,458 INFO L146 ILogger]: 0 DeclaredPredicates, 205 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=717, Invalid=4833, Unknown=0, NotChecked=0, Total=5550 [2019-05-23 11:30:01,458 INFO L146 ILogger]: Start minimizeSevpa. Operand 295 states. [2019-05-23 11:30:01,465 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 295 to 257. [2019-05-23 11:30:01,465 INFO L146 ILogger]: Start removeUnreachable. Operand 257 states. [2019-05-23 11:30:01,466 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 257 states to 257 states and 265 transitions. [2019-05-23 11:30:01,466 INFO L146 ILogger]: Start accepts. Automaton has 257 states and 265 transitions. Word has length 144 [2019-05-23 11:30:01,466 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:01,466 INFO L146 ILogger]: Abstraction has 257 states and 265 transitions. [2019-05-23 11:30:01,466 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:30:01,466 INFO L146 ILogger]: Start isEmpty. Operand 257 states and 265 transitions. [2019-05-23 11:30:01,467 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:30:01,467 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:01,468 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:01,468 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:01,468 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:01,468 INFO L146 ILogger]: Analyzing trace with hash 1628591421, now seen corresponding path program 19 times [2019-05-23 11:30:01,468 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:01,469 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:01,469 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:01,469 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:01,470 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:01,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:02,036 INFO L146 ILogger]: Checked inductivity of 213 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:30:02,036 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:02,036 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:02,045 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:02,089 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:02,090 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:30:02,092 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:02,306 INFO L146 ILogger]: Checked inductivity of 213 backedges. 75 proven. 46 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:30:02,326 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:02,326 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2019-05-23 11:30:02,327 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:30:02,327 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:30:02,327 INFO L146 ILogger]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:02,327 INFO L146 ILogger]: Start difference. First operand 257 states and 265 transitions. Second operand 32 states. [2019-05-23 11:30:02,959 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:02,960 INFO L146 ILogger]: Finished difference Result 437 states and 448 transitions. [2019-05-23 11:30:02,964 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:30:02,964 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 144 [2019-05-23 11:30:02,964 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:02,965 INFO L146 ILogger]: With dead ends: 437 [2019-05-23 11:30:02,965 INFO L146 ILogger]: Without dead ends: 327 [2019-05-23 11:30:02,966 INFO L146 ILogger]: 0 DeclaredPredicates, 186 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=431, Invalid=2431, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:30:02,967 INFO L146 ILogger]: Start minimizeSevpa. Operand 327 states. [2019-05-23 11:30:02,973 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 327 to 286. [2019-05-23 11:30:02,973 INFO L146 ILogger]: Start removeUnreachable. Operand 286 states. [2019-05-23 11:30:02,976 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 286 states to 286 states and 294 transitions. [2019-05-23 11:30:02,976 INFO L146 ILogger]: Start accepts. Automaton has 286 states and 294 transitions. Word has length 144 [2019-05-23 11:30:02,976 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:02,977 INFO L146 ILogger]: Abstraction has 286 states and 294 transitions. [2019-05-23 11:30:02,977 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:30:02,977 INFO L146 ILogger]: Start isEmpty. Operand 286 states and 294 transitions. [2019-05-23 11:30:02,978 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:30:02,978 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:02,978 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:02,978 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:02,979 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:02,979 INFO L146 ILogger]: Analyzing trace with hash -966498428, now seen corresponding path program 20 times [2019-05-23 11:30:02,979 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:02,980 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:02,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:02,980 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:02,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:03,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:03,265 INFO L146 ILogger]: Checked inductivity of 213 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:30:03,265 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:03,265 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:03,273 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:03,318 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:03,318 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:03,319 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:30:03,322 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:03,523 INFO L146 ILogger]: Checked inductivity of 213 backedges. 75 proven. 46 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:30:03,542 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:03,543 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2019-05-23 11:30:03,543 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:30:03,543 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:30:03,544 INFO L146 ILogger]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:03,544 INFO L146 ILogger]: Start difference. First operand 286 states and 294 transitions. Second operand 32 states. [2019-05-23 11:30:04,271 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:04,271 INFO L146 ILogger]: Finished difference Result 327 states and 334 transitions. [2019-05-23 11:30:04,272 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:30:04,272 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 144 [2019-05-23 11:30:04,272 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:04,273 INFO L146 ILogger]: With dead ends: 327 [2019-05-23 11:30:04,273 INFO L146 ILogger]: Without dead ends: 224 [2019-05-23 11:30:04,274 INFO L146 ILogger]: 0 DeclaredPredicates, 184 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=407, Invalid=2245, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:30:04,274 INFO L146 ILogger]: Start minimizeSevpa. Operand 224 states. [2019-05-23 11:30:04,279 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 224 to 219. [2019-05-23 11:30:04,279 INFO L146 ILogger]: Start removeUnreachable. Operand 219 states. [2019-05-23 11:30:04,280 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 219 states to 219 states and 225 transitions. [2019-05-23 11:30:04,280 INFO L146 ILogger]: Start accepts. Automaton has 219 states and 225 transitions. Word has length 144 [2019-05-23 11:30:04,280 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:04,280 INFO L146 ILogger]: Abstraction has 219 states and 225 transitions. [2019-05-23 11:30:04,280 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:30:04,280 INFO L146 ILogger]: Start isEmpty. Operand 219 states and 225 transitions. [2019-05-23 11:30:04,281 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:30:04,281 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:04,281 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:04,281 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:04,281 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:04,281 INFO L146 ILogger]: Analyzing trace with hash -1160084597, now seen corresponding path program 21 times [2019-05-23 11:30:04,281 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:04,281 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:04,282 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:04,282 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:04,282 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:04,293 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:04,619 INFO L146 ILogger]: Checked inductivity of 213 backedges. 27 proven. 94 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:30:04,620 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:04,620 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:04,628 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:04,718 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:30:04,719 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:04,720 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:30:04,722 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:04,938 INFO L146 ILogger]: Checked inductivity of 213 backedges. 46 proven. 75 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:30:04,956 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:04,957 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2019-05-23 11:30:04,957 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:30:04,957 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:30:04,958 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:04,958 INFO L146 ILogger]: Start difference. First operand 219 states and 225 transitions. Second operand 32 states. [2019-05-23 11:30:05,866 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:05,867 INFO L146 ILogger]: Finished difference Result 230 states and 235 transitions. [2019-05-23 11:30:05,867 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:30:05,867 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 144 [2019-05-23 11:30:05,868 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:05,869 INFO L146 ILogger]: With dead ends: 230 [2019-05-23 11:30:05,869 INFO L146 ILogger]: Without dead ends: 164 [2019-05-23 11:30:05,870 INFO L146 ILogger]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=648, Invalid=3908, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:30:05,870 INFO L146 ILogger]: Start minimizeSevpa. Operand 164 states. [2019-05-23 11:30:05,873 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 164 to 159. [2019-05-23 11:30:05,874 INFO L146 ILogger]: Start removeUnreachable. Operand 159 states. [2019-05-23 11:30:05,874 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2019-05-23 11:30:05,874 INFO L146 ILogger]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 144 [2019-05-23 11:30:05,874 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:05,875 INFO L146 ILogger]: Abstraction has 159 states and 162 transitions. [2019-05-23 11:30:05,875 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:30:05,875 INFO L146 ILogger]: Start isEmpty. Operand 159 states and 162 transitions. [2019-05-23 11:30:05,875 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 159 [2019-05-23 11:30:05,876 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:05,876 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:05,876 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:05,876 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:05,876 INFO L146 ILogger]: Analyzing trace with hash -1381954620, now seen corresponding path program 22 times [2019-05-23 11:30:05,877 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:05,877 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:05,877 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:05,877 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:05,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:05,890 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:07,222 INFO L146 ILogger]: Checked inductivity of 271 backedges. 27 proven. 94 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2019-05-23 11:30:07,223 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:07,223 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:07,231 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:07,280 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:07,280 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:07,281 INFO L146 ILogger]: Trace formula consists of 255 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:30:07,284 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:07,637 INFO L146 ILogger]: Checked inductivity of 271 backedges. 46 proven. 75 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2019-05-23 11:30:07,657 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:07,658 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 35 [2019-05-23 11:30:07,658 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:30:07,658 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:30:07,659 INFO L146 ILogger]: CoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:30:07,659 INFO L146 ILogger]: Start difference. First operand 159 states and 162 transitions. Second operand 35 states. [2019-05-23 11:30:08,773 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:08,773 INFO L146 ILogger]: Finished difference Result 177 states and 180 transitions. [2019-05-23 11:30:08,773 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:30:08,774 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 158 [2019-05-23 11:30:08,774 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:08,775 INFO L146 ILogger]: With dead ends: 177 [2019-05-23 11:30:08,775 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:30:08,776 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1567 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=730, Invalid=4672, Unknown=0, NotChecked=0, Total=5402 [2019-05-23 11:30:08,777 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:30:08,779 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 166. [2019-05-23 11:30:08,779 INFO L146 ILogger]: Start removeUnreachable. Operand 166 states. [2019-05-23 11:30:08,780 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 166 states to 166 states and 169 transitions. [2019-05-23 11:30:08,780 INFO L146 ILogger]: Start accepts. Automaton has 166 states and 169 transitions. Word has length 158 [2019-05-23 11:30:08,780 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:08,780 INFO L146 ILogger]: Abstraction has 166 states and 169 transitions. [2019-05-23 11:30:08,780 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:30:08,780 INFO L146 ILogger]: Start isEmpty. Operand 166 states and 169 transitions. [2019-05-23 11:30:08,781 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:30:08,781 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:08,781 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:08,781 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:08,781 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:08,782 INFO L146 ILogger]: Analyzing trace with hash -1679689104, now seen corresponding path program 23 times [2019-05-23 11:30:08,782 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:08,782 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:08,783 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,783 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:08,783 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,809 INFO L146 ILogger]: Conjunction of SSA is unsat